With Reactant Having Halo-c(=o)-halo, Halo-c(=o)-o-, Or -o-c(=o)-o- Group Patents (Class 528/196)
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Patent number: 7473756Abstract: The present invention relates to low-viscosity oligocarbonate polyols, their preparation and use. The oligocarbonate polyols are based on diols of formula I below, which are used in combination with a further aliphatic polyol.Type: GrantFiled: April 17, 2006Date of Patent: January 6, 2009Assignee: Bayer MaterialScience AGInventor: Steffen Hofacker
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Patent number: 7473753Abstract: Adhesive compositions are described which comprise at least one organic sulfoxide, sulfone or sulfide and at least one ketone, ether, ester, amide or carbonate or a mixture thereof. The adhesive compositions also may contain one or more water insoluble polymers such as ABS, PVC and CPVC. Methods of adhesively bonding or welding a first plastic surface to a second plastic surface using these adhesive compositions also are described.Type: GrantFiled: April 12, 2005Date of Patent: January 6, 2009Assignee: Oatey Co.Inventors: Amrit K. Parhar, Forest Hampton, III, Charles N. Bush, Fred R. Scholer
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Publication number: 20080319156Abstract: The invention provides a process for the preparation of polycarbonate by the melt transesterification process, polycarbonate having a low electrostatic charge obtainable by this process, and mouldings or extrudates, in particular optical data storage media or light-diffusing plates, made from this polycarbonate.Type: ApplicationFiled: May 9, 2008Publication date: December 25, 2008Applicant: Bayer MaterialScience AGInventors: Peter Fischer, Wilfried Haese, Alexander Meyer
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Patent number: 7462684Abstract: Disclosed is a process for the preparation of multilayered, shaped articles having high transparency and low haze and in which at least one layer contains at least one polyester comprising 2,2,4,4-tetramethyl-1,3-cyclobutanediol and a separate layer which contains a transamidized, homogeneous blend of a least two polyamides. The polyester component and the polyamide component have refractive indices which differ by about 0.006 to about ?0.0006. The small difference in the refractive indices enable the incorporation of regrind into one or more of the layers of the article while maintaining high clarity. These articles can exhibit improved excellent barrier properties and good melt processability while retaining excellent mechanical properties. Metal catalysts can be incorporated into one or more layers to impart oxygen-scavenging properties.Type: GrantFiled: March 28, 2006Date of Patent: December 9, 2008Assignee: Eastman Chemical CompanyInventors: Wesley Raymond Hale, Thomas Joseph Pecorini, Mark Edward Stewart, Martin Emerson Rogers, Spencer Allen Gilliam, Michael Duane Cliffton, Emmett Dudley Crawford, David Scott Porter, Gary Wayne Connell, Marcus David Shelby
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Patent number: 7462681Abstract: A polycyanurate composition (I), wherein “n” is a positive integer of about 1 to about 10, and wherein R, R?, and R? comprising at least one of C, H, N, O, F, Si, P, S, Cl, Br, I, and any combination thereof. A method of making a polycyanurate composition (I) including, providing at least one semi-aliphatic polycarbonate (V), wherein R comprises at least one of C, H, N, O, F, Si, P, S, Cl, Br, I, providing at least one uncured reactive thermoset monomer, dissolving the polycarbonate in a solvent with a high vapor pressure or suspending the polycarbonate directly into the reactive monomer, mixing the liquefied polycarbonate with the uncured reactive thermoset monomer into a homogeneous liquid component, curing the liquid component into a viscous component, and exposing the cured component to temperatures of about 50° C. to about 400° C. forming tricyanurate linkages in the polycyanurate composition (I).Type: GrantFiled: September 19, 2005Date of Patent: December 9, 2008Assignee: The United States of America as represented by the Secretary of the NavyInventors: Andrew J. Guenthner, Gregory R. Yandek, David J. Irvin
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Patent number: 7442757Abstract: A thermoplastic resin contains a polymer, and the polymer includes a divalent phosphate residue having a spiro ring, represented by formula (1), in a molecule and has a number average molecular weight of at least 2,000: wherein R1 is independently selected from the group consisting of a hydrogen atom, a halogen atom, an aliphatic hydrocarbon group having the carbon number of 1 to 20, an aromatic hydrocarbon group having the carbon number of 1 to 20, and a nitro group; p and q are integers satisfying p+q=0 to 16; X independently represents oxygen, sulfur, selenium, or an unshared electron pair; Y is independently selected from oxygen, sulfur, and a methylene group; and n and m are integers satisfying n+m=0 to 4.Type: GrantFiled: May 13, 2003Date of Patent: October 28, 2008Assignee: Toray Industries, Inc.Inventors: Tatsuya Matsuno, Keijiro Takanishi
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Publication number: 20080242828Abstract: Provided a process for producing a polycarbonate which comprises reacting an aqueous alkali solution of a dihydric phenol with phosgene in the presence of an organic solvent to produce a polycarbonate oligomer and subsequently polycondensing the oligomer, wherein an emulsion solution of a polycarbonate oligomer-containing organic solvent obtained in the polycarbonate oligomer production step is introduced into a coalescer to separate the emulsion solution into a polycarbonate oligomer-containing organic solvent phase and an aqueous phase, and the polycarbonate oligomer-containing organic solvent phase is subjected to polycondensation. Thus the emulsion solution of a polycarbonate oligomer-containing organic solvent obtained in the polycarbonate oligomer production step is efficiently separated to reduce the content of impurity-containing water in the oligomer for producing a polycarbonate having excellent quality and to a obtain wastewater having a low content of organic materials.Type: ApplicationFiled: February 22, 2005Publication date: October 2, 2008Applicant: Idemitsu Kosan Co., Ltd.Inventors: Noriyuki Kunishi, Eizo Saito
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Publication number: 20080234444Abstract: It is a task of the present invention to provide a method which enables the production of a high quality, high performance aromatic polycarbonate (which is colorless and has excellent mechanical properties) from a molten aromatic polycarbonate prepolymer obtained from an aromatic dihydroxy compound and a diaryl carbonate, wherein the polycarbonate can be stably produced on a commercial scale at 1 to 50 t/hr for a long time without the need for a large amount of an inert gas. In the present invention, this task has been accomplished by a method for producing an aromatic polycarbonate by the melt transesterification process, in which the prepolymer is caused to absorb a specific amount of an inert gas, followed by polymerization using a guide-wetting fall polymerizer device having a specific structure, whereby a high quality, high performance aromatic polycarbonate as mentioned above can be stably produced on a commercial scale at 1 to 50 t/hr for a long time (more than several thousand hours, e.g.Type: ApplicationFiled: June 14, 2005Publication date: September 25, 2008Applicant: ASAHI KASEI CHEMICALS CORPORATIONInventors: Shinsuke Fukuoka, Hiroshi Hachiya, Kazuhiko Matsuzaki
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Patent number: 7425603Abstract: A polymer comprising structural units derived from a polycyclic dihydroxy compound of Formula (I) wherein R1, R2 and R3 are independently at each occurrence selected from the group consisting of a cyano functionality, a halogen, an aliphatic functionality having 1 to 10 carbons, a cycloaliphatic functionality having 3 to 10 carbons, and an aromatic functionality having 6 to 10 carbons; wherein each occurrence of “n”, “m”, and “p” independently has a value of 0, 1, 2, 3, or 4; and wherein the polymer is substantially linear.Type: GrantFiled: November 29, 2005Date of Patent: September 16, 2008Assignee: General Electric CompanyInventors: T. Tilak Raj, Radhakrishna Arakali Srinivasarao, Jan-Pleun Lens, Subrahmanya Bhat K., Umesh Hasyagar, Subash Scindia
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Patent number: 7405265Abstract: Disclosed is a method of preparing a catalyst for polymerization of aliphatic polycarbonates and a method of polymerizing an aliphatic polycarbonate. This method includes reacting a zinc precursor and organic dicarboxylic acid in a non-ionic surfactant-included solution.Type: GrantFiled: June 19, 2003Date of Patent: July 29, 2008Assignees: Posco, Postech FoundationInventors: Seung-Jae Moon, Moon-Hor Ree, Jong-Sung Kim, Kie-Soo Kim
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Patent number: 7402650Abstract: A process for preparing polyarylate wherein a bivalent phenol compound having the structure of Formula 1 and an aromatic dicarboxylic acid halogen compound react to prepare a polyarylate, and wherein a nonionic surface-active agent is added. This decreases residual salts and improves the transmittance and the heat-resistance. In Formula 1, R1, R2, R3 and R4 denote the same as illustrated in the description.Type: GrantFiled: September 14, 2005Date of Patent: July 22, 2008Assignee: LG Chem, Ltd.Inventors: Hee-jung Kim, Dong-ryul Kim, Sang-uk Ryu, Sang-hyun Park
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Patent number: 7399820Abstract: A thermoplastic molding composition comprising (co)poly(ester)carbonate, and a cyclic oligoformal is disclosed. The composition that is characterized in its lowered water absorption and improved flowability is suitable for a variety of application including in particular optical data storage media.Type: GrantFiled: July 26, 2005Date of Patent: July 15, 2008Assignee: Bayer MaterialScience AGInventors: Rolf Wehrmann, Helmut-Werner Heuer
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Patent number: 7390868Abstract: Provided are a catalyst for producing polycarbonate comprising a reaction product obtained by reacting (a) a catalyst carrier containing nitrogen or phosphorus with (b) a palladium compound and (c) a metal compound having a redox catalytic ability and a production process for polycarbonate, comprising a first step in which an aromatic dihydroxy compound and monovalent phenol are reacted with carbon monoxide and oxygen to produce a polycarbonate prepolymer and a second step in which the above polycarbonate prepolymer is subjected to solid state polymerization to produce polycarbonate, wherein the above catalyst is used in the first step described above.Type: GrantFiled: May 26, 2004Date of Patent: June 24, 2008Assignees: National Institute of Advanced Industrial Science and Technology, Idemitsu Kosan Co., Ltd.Inventors: Masaya Okamoto, Jun-ichi Sugiyama, Mitsuru Ueda
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Patent number: 7375177Abstract: A polymer comprising at least one structural unit derived from a dihydroxy compound of Formula (I) wherein R1 is an aromatic divalent functionality having 6 to 60 carbons, R2 can be the same or different at each occurrence and is independently at each occurrence selected from the group consisting of a cyano functionality, a nitro functionality, a halogen, an aliphatic functionality having 1 to 10 carbons, a cycloaliphatic functionality having 3 to 10 carbons and an aromatic functionality having 6 to 10 carbons and “n” is an integer having a value 0 to 3.Type: GrantFiled: November 29, 2005Date of Patent: May 20, 2008Assignee: General Electric CompanyInventors: Nagarajan Arumugam, Radhakrishna Arakali Srinivasarao, Jan Pleun Lens, Tilak Raj, Binod Sahoo, Subash Scindia
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Patent number: 7375166Abstract: A method for manufacturing a film or sheet comprises deforming a polymeric alloy at a temperature effective to impart to the deformed alloy a birefringence retardation of greater than or equal to about 750 nanometers. A method eliminating comets and veins in an optical film or sheet comprises annealing the film or sheet to a temperature greater than the lowest glass transition temperature of the polymeric resins contained in the alloy. A composition comprises a first polymeric resin in an amount of about 1 to about 99 wt %; and a second polymeric resin in an amount of about 1 to about 99 wt %, wherein the polymeric resins are blended with a deforming force effective to produce a polymeric alloy having a birefringence retardation of greater than or equal to about 750 nanometers.Type: GrantFiled: August 4, 2005Date of Patent: May 20, 2008Assignee: General Electric CompanyInventors: Safwat Tadros, Parminder Agarwal, Shreyas Chakravarti, Peter Vollenberg
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Patent number: 7368521Abstract: Provided is a method of producing a high-molecular weight modified polycarbonate resin. The method includes a melt condensation polymerization process in which transesterification and quick condensation polymerization are sequentially performed, a spray crystallization process, and a solid state polymerization process. When this method is used, solid state polymerization can be performed without additional drying, milling and fractionation processes so that the operation time and costs are highly reduced. In addition, crystallinity and size of crystallized modified polycarbonate particles can be efficiently controlled to produce a high-molecular weight modified polycarbonate having uniform physical properties in the solid state polymerization.Type: GrantFiled: November 7, 2005Date of Patent: May 6, 2008Assignee: LG Chem, Ltd.Inventors: Mijeung Hong, Jong Hun Kim, Sung Kyou Park, Boo Gon Woo
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Patent number: 7365148Abstract: A polycarbonate containing an ether diol residue producible from a polysaccharide and expressed by the following formula (1), and a diol residue expressed by the following formula (2) —O—(CmH2m)—O— ??(2) (here, m is an integer of 2 to 12), wherein said ether diol residue amounts to 65-98 wt. % of all the diol residues, and having a glass transition temperature of 90° C. or higher.Type: GrantFiled: June 14, 2004Date of Patent: April 29, 2008Assignee: Teijin LimitedInventors: Aya Ono, Kiyotsuna Toyohara, Hiroyoshi Minematsu, Yuuichi Kageyama
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Patent number: 7365149Abstract: A surface of a melt polymerization reactor system having residual reaction components of a melt polymerization reaction thereon can be cleaned by introducing a cleaning agent having a phenolic compound to the polymerization reactor system and into contact with the surface of the melt polymerization reactor system having the residual reaction components of a melt polymerization reaction thereon. The residual reaction components of the melt polymerization reaction include polycarbonate oligomers or polymers or their degradation products. Further, the cleaning agent is maintained in contact with the surface for a period of time and at a temperature sufficient to substantially remove the residual reaction components from the surface.Type: GrantFiled: December 12, 2005Date of Patent: April 29, 2008Inventors: Hans-Peter Brack, Maarten Antoon Jan Campman, Laurus van der Wekke, Dennis James Patrick Maria Willemse
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Patent number: 7361724Abstract: A surface coating composition for providing a self-assembling monolayer, in stable form, on a material surface or at a suitable interface, as well as a method of preparing such a composition and a method of using such a composition to coat a surface, such as the surface of an implantable medical device, in order to provide the surface with desirable properties. The method provides the covalent attachment of a SAM to a surface in a manner that substantially retains or improves the characteristics and/or performance of both the SAM and the surface itself. Covalent attachment is accomplished by the use of one or more latent reactive groups, e.g., provided by either the surface and/or by the SAM-forming molecules themselves.Type: GrantFiled: January 15, 2004Date of Patent: April 22, 2008Assignee: SurModics, Inc.Inventors: Patrick E. Guire, Kristin S. Taton
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Patent number: 7358321Abstract: A copolycarbonate is discloses, comprising units of the formula (1) wherein 70 to 99.5 mole percent of the total number of R1 groups are derived from a dihydroxy compound of formula (2) wherein R2 and R3 are each independently a halogen or a C1-6 alkyl group, R4 is a methyl or a phenyl group, and c is independently 0 to 4; and 0.5 to 30 mole percent of the total number of R1 groups are derived from a dihydroxy compound of formula (3) HO—R5—OH??(3) wherein at least 60% of the R5 groups are aromatic, and the dihydroxy compound of formula (3) is not the same as the dihydroxy compound of formula (2), and wherein the copolycarbonate has a glass transition temperature of 250° C. or higher.Type: GrantFiled: November 29, 2005Date of Patent: April 15, 2008Assignee: General Electric CompanyInventors: James A. Mahood, Emine Elif Gurel
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Patent number: 7354986Abstract: A copolycarbonate of the formula wherein 5 to 75 mole percent of the total number of R1 groups is derived from a high Tg monomer of formula (2) wherein R2 and R3 are each independently a halogen or a C1-6 alkyl group, R4 is a methyl or phenyl, and c is 0 to 4; and 25 to 95 mole percent of the R1 groups are derived from a dihydroxy compound of formula HO—R5—OH, wherein at least 60% of the R5 groups are aromatic, and the dihydroxy compound of formula (3) is not the same as the high Tg monomer of formula (2), and wherein the copolycarbonate comprises at least 10% fewer carbonate linkages of formula (4) than would be theoretically obtained in a random copolymer made from the same ratio of the high Tg monomer of formula (2) and the dihydroxy compound of formula (3).Type: GrantFiled: November 30, 2005Date of Patent: April 8, 2008Assignee: General Electric CompanyInventors: James A. Mahood, Jon M. Malinoski
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Publication number: 20080081893Abstract: A polycarbonate copolymer comprising 90 to 100 mol % of units derived from a cyclohexylidene bisphenol of the formula wherein Ra? and Rb? are each independently C1-12 alkyl, T is a C5-16 cycloalkylene, a C5-16 cylcloalkylidene, a C1-5 alkylene, a C1-5 alkylidene, a C6-13 arylene, a C7-12 arylalkylene, C7-12 arylalkylidene, a C7-12 alkylarylene, or a C7-12 arylenealkyl, and r and s are each independently 1 to 4; 2 to 35 wt % of units derived from a polysiloxane diol of the formulas or a combination thereof, wherein Ar is a substituted or unsubstituted C6-36 arylene group, each R is the same or different C1-13 monovalent organic group, each R6 is the same or different divalent C1-C30 organic group, and E is an integer from 2 to 100; and 0 to 10 mol % of units derived from a dihydroxy aromatic compound of formula (3) wherein Ra and Rb are each independently halogen, p and q are each independently integers of 0 to 4, and the dihydroxy aromatic compound of formula (3) is not the same as the cyclohexyliType: ApplicationFiled: September 29, 2006Publication date: April 3, 2008Applicant: GENERAL ELECTRIC COMPANYInventors: James Franklin Hoover, Jan-Pleun Lens, Brian Mullen
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Publication number: 20080081895Abstract: A polycarbonate copolymer comprising 40 to 89 mol % of units derived from a bisphenol of the formula wherein Ra? and Rb? are each independently C1-12 alkyl, T is a C5-16 cycloalkylene, a C5-16 cylcloalkyliden, a C1-5 alkylene, a C1-5 alkylidene, a C6-13 arylene, a C7-12 arylalkylene, C7-12 arylalkylidene, a C7-12 alkylarylene, or a C7-12 arylenealkyl, and r and s are each independently 1 to 4; 2 to 35 wt.Type: ApplicationFiled: September 29, 2006Publication date: April 3, 2008Applicant: GENERAL ELECTRIC COMPANYInventors: Jan Pleun Lens, Brian D. Mullen
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Publication number: 20080081896Abstract: A (co)polycarbonate the molecular structure of which contains units derived from bisphenols conforming to formulae (1a1) and (1b1) in which R1 independently of one another represents hydrogen or a C1-C10-alkyl and R2 represents C1-C10-alkyl, or phenyl or benzyl in each case unsubstituted or substituted by at least one member selected from the group consisting of hydrogen and C1-C10-alkyl radical. The (co) polycarbonate exhibits relatively high glass transition temperature and improved adhesion to metals.Type: ApplicationFiled: September 24, 2007Publication date: April 3, 2008Inventor: Helmut-Werner Heuer
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Publication number: 20080081892Abstract: A thermoplastic composition comprises a polycarbonate having repeating structural carbonate units of the formula (1): wherein at least 60 percent of the total number of R1 groups contain aromatic organic groups and the balance thereof are aliphatic, alicyclic, or aromatic groups; and wherein the polycarbonate comprises terminal groups derived from reaction with a cyanophenol of the formula wherein Y is a halogen, C1-3 alkyl group, C1-3 alkoxy group, C7-12 arylalkyl, C7-12 alkylaryl, or nitro group, y is 0 to 4, and c is 1 to 5, provided that y+c is 1 to 5; and a flame retardant. The compositions are useful in the manufacture of a wide variety of parts, particularly those having a thin wall.Type: ApplicationFiled: September 29, 2006Publication date: April 3, 2008Applicant: General Electric CompanyInventors: Jianbo Di, Brian D. Mullen, Paul D. Sybert
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Patent number: 7348395Abstract: A cyanate ester system is disclosed. An aryl ether oligomer may be made from a dihydroxyaromatic compound and a dihaloaromatic compound in the presence of a base. The oligomer is then reacted with a cyanide compound in the presence of a base to form the cyanate ester shown below. The cyanate ester may then be cross-linked to a thermoset having triazine ring cross-links.Type: GrantFiled: June 22, 2006Date of Patent: March 25, 2008Assignee: The United States of America as represented by the Secretary of the NavyInventors: Teddy M Keller, Matthew Laskoski
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Patent number: 7348394Abstract: A method for producing a transparent article is provided. The method comprises melt transesterifying in the presence of a transesterification catalyst and a monomer mixture to produce a biphenol polycarbonate copolymer product comprising greater than 45 mole percent of structural units derived from the biphenol by heating the monomer mixture to a temperature of greater than 340° C. to make the biphenol polycarbonate copolymer; and cooling the biphenol polycarbonate copolymer to produce the transparent article. The monomer mixture comprises the biphenol, at least one aromatic dihydroxy compound other than the biphenol, and an activated carbonic acid diester.Type: GrantFiled: October 28, 2005Date of Patent: March 25, 2008Assignee: General Electric CompanyInventors: Subarna Shyamroy, Gokul Srinivasan
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Patent number: 7345133Abstract: A branched polycarbonate and processes for its preparation are disclosed. The polycarbonate contains structural units conforming to in which R1, R2, R3 and R4 mutually independently denote C1-C10 alkyl, R5, R6 and R7 mutually independently denote hydrogen or C1-C10 alkyl, or R1 and R2, and R3 and R4, with the carbon atom to which they are attached, form a C5-C10 cycloalkyl group, wherein the cycloalkyl group may be substituted.Type: GrantFiled: November 1, 2005Date of Patent: March 18, 2008Assignee: Bayer Materialscience AGInventors: Helmut-Werner Heuer, Rolf Wehrmann, Ulrich Blaschke, Michael Erkelenz
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Patent number: 7342085Abstract: A cyanate ester system is disclosed. An aryl ether oligomer may be made from a dihydroxyaromatic compound and a dihaloaromatic compound in the presence of a base. The oligomer is then reacted with a cyanide compound in the presence of a base to form the cyanate ester shown below. The cyanate ester may then be cross-linked to a thermoset having triazine ring cross-links HO—Ar2O—Ar1—O—Ar2nOH.Type: GrantFiled: June 22, 2006Date of Patent: March 11, 2008Assignee: The United States of America as represented by the Secretary of the NavyInventors: Teddy M Keller, Matthew Laskoski
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Patent number: 7339021Abstract: The present invention relates to a method for preparing polycarbonate resin, and more particularly to a method for effectively preparing polycarbonate resin having a large molecular weight in a short time under a melt polymerization condition using a catalyst system comprising phosphoranylidene ammonium salts, which is stable and maintains superior reactivity during melt polymerization and solid state polymerization.Type: GrantFiled: April 18, 2003Date of Patent: March 4, 2008Assignee: LG Chem, Ltd.Inventors: Eun-Duck Park, Boo-Gon Woo, Mi-Jeung Hong, Jong-Hun Kim
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Patent number: 7339070Abstract: A method for recovering a product mixture from a waste stream in a diaryl carbonate manufacturing process comprising reacting the waste stream with an alkyl alcohol to form a reaction mixture, and separating the product mixture from the reaction mixture.Type: GrantFiled: May 15, 2006Date of Patent: March 4, 2008Assignee: General Electric CompanyInventors: Vutukuru Lakshmi Narasimha Murthy, Ignacio Vic Fernandez, Venugopal Boddapaty Venkata
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Patent number: 7332559Abstract: A method of preparing a high molecular weight polycarbonate resin is provided. In the method, a condensation polymerization process is used so that a mole fraction of arylcarbonate existing in a terminated group of a reaction side product having a degree of polymerization of less than 3 obtained as a result of transesterification and in a non-reacted diarylcarbonate is reduced. As a result, a high molecular weight polycarbonate can be obtained by solid state polymerization. A polycarbonate with an identical molecular weight can be produced in a substantially short time, compared with a polycarbonate produced through solid state polymerization without condensation polymerization. In addition, the non-use of a poisonous phosgene contributes to stability. Furthermore, quality polycarbonate may be guaranteed.Type: GrantFiled: October 21, 2005Date of Patent: February 19, 2008Assignee: LG Chem, Ltd.Inventors: Mijeung Hong, Jong Hun Kim, Sung Kyou Park, Boo Gon Woo
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Patent number: 7332560Abstract: A thermoplastic molding composition comprising polycarbonate and at least one (co)polyformal is disclosed. Characterized by its low water absorption the composition is particularly suitable for producing molded articles, especially optical data carriers, such as compact disks, video disks, digital versatile disks and optical data carriers that are writable and erasable once or repeatedly.Type: GrantFiled: November 4, 2005Date of Patent: February 19, 2008Assignee: Bayer MaterialScience AGInventors: Helmut-Werner Heuer, Rolf Wehrmann
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Patent number: 7329718Abstract: The present invention relates to an aromatic polycarbonate resin which comprises repetitive units originating in residual groups of a 2,2-bis(4-hydroxyphenyl)adamantane compound and a 1,3-bis(4-hydroxyphenyl)adamantane compound having a substituent on an aromatic ring and which is excellent in a transparency, a heat resistance and a mechanical strength and has a good moldability and a production process for the aromatic polycarbonate resin described above in which the adamantane compounds described above are reacted with a carbonic ester-forming compound. Further, it relates to an aromatic polycarbonate resin which is excellent in an optical characteristic and an optical part prepared by molding the same.Type: GrantFiled: July 28, 2006Date of Patent: February 12, 2008Assignee: Idemitsu Kosan Co., Ltd.Inventors: Hironobu Morishita, Hiroyuki Tamura, Yasushi Hamada
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Patent number: 7326764Abstract: A reaction product comprises a first polyester-polycarbonate comprising a polyester unit and a polycarbonate unit, a second polyester-polycarbonate comprising a polyester unit and a polycarbonate unit, and a transesterification catalyst. The reaction product has a haze of less than 1.7%, specifically less than 1.0% as measured at a thickness of 3.2 mm according to ASTM D1003-00. A thermoplastic composition comprising the reaction product and articles formed from therefrom are disclosed. A method of forming the reaction product is also disclosed.Type: GrantFiled: October 31, 2005Date of Patent: February 5, 2008Assignee: General Electric CompanyInventors: Jianbo Di, Brian D. Mullen, Paul D. Sybert
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Patent number: 7326763Abstract: A polymer comprises structural units derived from a polycyclic dihydroxy compound of Formula (I) wherein R1 is selected from the group consisting of a cyano functionality, a nitro functionality, an aliphatic functionality having 1 to 10 carbons, an aliphatic ester functionality having 2 to 10 carbons, a cycloaliphatic ester functionality having 4 to 10 carbons and an aromatic ester functionality having 4 to 10 carbons; R2 is selected from the group consisting of a cyano functionality, a nitro functionality, an aliphatic ester functionality having 2 to 10 carbons, a cycloaliphatic ester functionality having 4 to 10 carbons and an aromatic ester functionality having 4 to 10 carbons; and R3 and R4 are independently at each occurrence a hydrogen, an aliphatic functionality having 1 to 10 carbons or a cycloaliphatic functionality having 3 to 10 carbons.Type: GrantFiled: October 28, 2005Date of Patent: February 5, 2008Assignee: General Electric CompanyInventors: Jan Henk Kamps, Jan-Pleun Lens, James A. Mahood, Radhakrishna Arakali Srinivasarao, T. Tilak Raj, Ravindra Vikram Singh
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Patent number: 7326467Abstract: A polycarbonate-based resin composition for extrusion molding using a siring die, and a molded product produced by extrusion-molding the resin composition using a sizing die, The polycarbonate-based resin composition comprises, as a main component, a polycarbonate having a viscosity-average molecular weight of 17000 to 27000 and containing main repeating units represented by the following formula (A): wherein an amount of proton (Pa) and an amount of proton (Pb) per 1 g of the polycarbonate which are calculated from respective integral values of a signal (a) detected at ?=7.96 to 8.02 ppm and a signal (b) detected at ?=8.11 to 8.17 ppm in 1H-NMR spectra thereof as measured in a deuterated chloroform solvent, satisfy the following formula (1): 4<{(Pa)+(Pb)}<26 ??(1) wherein a unit of each of (Pa) and (Pb) is ?mol/g. The above polycarbonate resin composition exhibits good mechanical properties and a good moldability.Type: GrantFiled: September 26, 2003Date of Patent: February 5, 2008Assignee: Mitsubishi Engineering-Plastics CorporationInventors: Hiroshi Nakano, Hidetaka Ito
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Patent number: 7323536Abstract: A reaction product comprises a polyester-polycarbonate comprising a polyester unit and a polycarbonate unit, and a transesterification catalyst. The reaction product has a haze of less than 5.0%, specifically less than 3.5% as measured at a thickness of 3.2 mm according to ASTM D1003-00. A thermoplastic composition comprising the reaction product and articles formed from therefrom are disclosed. A method of forming the reaction product is also disclosed.Type: GrantFiled: November 4, 2005Date of Patent: January 29, 2008Assignee: General Electric CompanyInventors: Brian D. Mullen, Paul D. Sybert
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Patent number: 7323535Abstract: A reaction product comprises a polyester-polycarbonate comprising a polyester unit and a polycarbonate unit, a polycarbonate polymer, and a transesterification catalyst, wherein the polyester-polycarbonate comprises greater than or equal to 75 mole % aromatic ester units, and less than 25 mole % carbonate units. The reaction product has a haze of less than 1.7%, specifically less than 1.0% as measured at a thickness of 3.2 mm according to ASTM D1003-00. A thermoplastic composition comprising the reaction product and articles formed from therefrom are disclosed. A method of forming the reaction product is also disclosed.Type: GrantFiled: October 31, 2005Date of Patent: January 29, 2008Assignee: General Electric CompanyInventors: Gordon A. Berkstresser, IV, Brian D. Mullen, Paul D. Sybert
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Patent number: 7317067Abstract: An object of the present invention is to provide a polycarbonate copolymer having excellent heat resistance and dimensional stability and heat resistant parts comprising the copolymer and suitable for use in various applications. The present invention is a polycarbonate copolymer comprising 5 to 95 mol % of recurring unit (component a) represented by the following general formula (I): and 95 to 5 mol % of recurring unit (component b) represented by the following general formula (II): (wherein Ra to Rd are each independently a hydrogen atom, a hydrocarbon group which may contain an aromatic group having 1 to 9 carbon atoms or a halogen atom, and W is a single bond, a hydrocarbon group which may contain an aromatic group having 1 to 20 carbon atoms or an O, SO, SO2, CO or COO group), and various heat resistant parts comprising the copolymer.Type: GrantFiled: March 24, 2003Date of Patent: January 8, 2008Assignee: Teijin ChemicalsInventors: Koki Ikeda, Toshimasa Tokuda, Yoshimasa Okamoto, Masato Ando
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Patent number: 7317073Abstract: A method is disclosed for producing a vacuum and for separating condensable components present in vapor which accumulates during the production of a polymer by melt-phase polycondensation under vacuum. Vapor produced during the production of polymers by melt-phase polycondensation in at least one reaction step under vacuum is drawn of by at least one steam jet vacuum pump with a down stream injection condenser. The steam jet vacuum pump is driven with alkylene carbonate in vapor form and liquid alkylene carbonate is then supplied to the injection condenser as coolant.Type: GrantFiled: March 31, 2004Date of Patent: January 8, 2008Assignee: Lurgi Zimmer GmbHInventor: Rudolf Kämpf
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Publication number: 20080004417Abstract: Polycarbonates incorporating terminal carbonate groups derived from ester-substituted activated carbonates, for example terminal methyl salicyl carbonate (TMSC) derived from the use of BMSC as the activated carbonate in a transesterification process, have unfavorable properties with respect to color, hydrolytic stability and thermal stability, particularly when the polycarbonate containing such end groups is molded. The number of activated carbonate end groups formed during the melt transesterification formation of polycarbonate can be reduced, however, without sacrificing the benefits of using an activated diaryl carbonate, and without requiring a separate reaction or additional additives by reacting a dihydroxy compound with an activated diaryl carbonate in the presence of an esterification catalyst to produce a polycarbonate, wherein the molar ratio of activated diaryl carbonate to dihydroxy compound is less than 1 when expressed to at least three decimal places, for example 0.996 or less.Type: ApplicationFiled: June 30, 2006Publication date: January 3, 2008Applicant: General Electric CompanyInventors: Bernd Jansen, Jan Henk Kamps, Edward Kung, Patrick Joseph McCloskey, Paul Michael Smigelski
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Publication number: 20080004418Abstract: Polycarbonates incorporating terminal carbonate groups derived from ester-substituted activated carbonates in a transesterification process have unfavorable properties with respect to color, hydrolytic stability and thermal stability, particularly when the polycarbonate containing such end groups is molded. The number of activated carbonate end groups formed during the melt transesterification formation of polycarbonate can be reduced by reacting a dihydroxy compound with an activated diaryl carbonate in the presence of an esterification catalyst to produce a polycarbonate, in the presence of a monohydroxy chainstopper such as para-cumyl phenol in an amount that results in 35 to 65 mol % of the end groups being derived from the monohydroxy chainstopper. Suitably, the reactants are provided such that the molar ratio of activated diaryl carbonate to the total of dihydroxy compound plus ½ the chainstopping reagent that is less than 1.Type: ApplicationFiled: June 30, 2006Publication date: January 3, 2008Applicant: General Electric CompanyInventors: Bernd Jansen, Jan Henk Kamps, Edward Kung, Patrick Joseph McCloskey, Paul Michael Smigelski
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Patent number: 7309755Abstract: A method for making a polycarbonate article is described wherein the article is made by rotation molding a melt polycarbonate having a weight average molecular weight from 25,000 to about 36,000. The melt polycarbonate is produced by transesterifying a diaryl carbonate and a dihydroxy compound in the presence of a catalyst system to form an intermediate aromatic polycarbonate, wherein the catalyst system comprises a first catalyst selected from the group consisting of alkali metal salts and alkaline earth metal salts; and a second catalyst selected from the group consisting of quaternary ammonium compounds and quaternary phosphonium compounds; adding to said intermediate aromatic polycarbonate a catalyst quencher, and rotation molding the aromatic polycarbonate at a temperature from about 305° C. to about 360° C. Also disclosed are polycarbonate light diffusive articles produced by rotation molding.Type: GrantFiled: August 24, 2005Date of Patent: December 18, 2007Assignee: General Electric CompanyInventor: Johannes Martinus Dina Goossens
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Patent number: 7307114Abstract: A polycarbonate resin composition for use in the production of a substrate for an optical information medium, comprising (A) an aromatic polycarbonate resin having a weight average molecular weight of from 13,000 to 18,000, wherein the aromatic polycarbonate resin (A) is produced by subjecting an aromatic dihydroxy compound and a carbonic diester to a transesterification reaction, and is substantially free of a chlorine atom; and (B) a partial ester obtained from a saturated aliphatic carboxylic acid having 10 to 30 carbon atoms and a di- to hexahydric alcohol, wherein the partial ester (B) has an acid value of from 2 to 20 mgKOH.Type: GrantFiled: May 6, 2004Date of Patent: December 11, 2007Assignee: Asahi Kasei Chemicals CorporationInventors: Hiroshi Hachiya, Takashi Adachi
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Publication number: 20070282091Abstract: An improved method for the preparation of ester-substituted diaryl carbonates prepared by reacting phosgene with recycle streams of ester-substituted phenols from reaction processes using a tetraalkyl ammonium hydroxide catalyst, a tetraalkyl phosphonium hydroxide catalyst, or both, where at least one alkyl group of the tetraalkyl ammonium hydroxide or the tetraalkyl phosphonium hydroxide is a methyl group. The improvement includes the step of treating the recycle stream to reduce the concentration of a trialkyl amine, trialkyl phosphine, or both, if present, from the recycle stream prior to reacting it with phosgene to form the ester-substituted diaryl carbonate.Type: ApplicationFiled: May 31, 2006Publication date: December 6, 2007Applicant: GENERAL ELECTRIC COMPANYInventors: Paul William Buckley, David Michel Dardaris, Patrick Joseph McCloskey
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Patent number: 7297754Abstract: A method for preparing an aromatic chloroformate comprising, introducing a mixture of at least one aromatic hydroxyl compound, phosgene, at least one solvent, and at least one organic base into a flow reactor to obtain a unidirectionally flowing reaction mixture. The unidirectionally flowing reaction mixture is maintained at a temperature between about 0° C. and about 60° C. to produce a single product stream comprising an aromatic chloroformate.Type: GrantFiled: June 28, 2005Date of Patent: November 20, 2007Assignee: General Electric CompanyInventors: Gary Charles Davis, James Manio Silva, Joshua James Stone
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Patent number: 7297753Abstract: A method for reducing the permeation rate of a permeable species through a polymeric material includes identifying a solubility-increasing species in the polymeric material having a reversible affinity for the permeable species, and removing or altering at least a portion of the solubility-increasing species in the polymeric material. In one application, the permeable species is water, and the solubility-increasing species is hygroscopic. A example of a polymeric material is an elastomeric polymer. The solubility-increasing species may be removed in part from an existing piece of the polymeric material by leaching it out. The polymeric material may instead be manufactured with a reduced content of the solubility-increasing species.Type: GrantFiled: July 20, 2004Date of Patent: November 20, 2007Assignee: Raytheon CompanyInventor: David B. Hatfield
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Patent number: 7279544Abstract: A multi stage process for the production of polycarbonates having low monomer content is disclosed. The process entails, in sequence, (i) transesterifying in the melt at least one dihydroxyaryl compound with at least one diaryl carbonate in the presence of at least one onium catalyst to produce a polycondensate that contains monomers, (ii) introducing into the polycondensate an inhibitor in an hypostoichiometric amount in relation to the catalyst and (iii) reducing in a finishing reactor the content of monomers in said polycondensate. The polycarbonate thus produced is characterized in that it contains less than 350 ppm of diphenyl carbonate, less than 40 ppm of 2,2-bis-(4-hydroxyphenyl)propane and less than 150 ppm of phenol.Type: GrantFiled: December 2, 2004Date of Patent: October 9, 2007Assignee: Bayer MaterialScience AGInventors: Uwe Hucks, Melanie Möthrath, Helmut-Werner Heuer, Thomas König, Lydia Simon, Marc Buts, Johan Vanden Eynde
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Patent number: RE40508Abstract: Thermally stable polymers comprising resorcinol arylate chain members are prepared using an interfacial method comprising the steps of: (a) combining at least one resorcinol moiety and at least one catalyst in a mixture of water and at least one organic solvent substantially immiscible with water; and (b) adding to the mixture from (a) at least one dicarboxylic acid dichloride while maintaining the pH between 3 and 8.5 through the presence of an acid acceptor, wherein the total molar amount of acid chloride groups is stoichiometrically deficient relative to the total molar amount of phenolic groups.Type: GrantFiled: August 15, 2003Date of Patent: September 16, 2008Assignee: SABIC Innovative Plastics IP B.V.Inventors: Daniel Joseph Brunelle, Joseph Anthony Suriano, Taeseok Jang, Tiberiu Mircea Sielovan, Edward Pickett, Gregory Allen O'Neil