Polymerizing In The Presence Of A Specified Material Other Than A Reactant And Other Than Group Ia Or Group Iia Material As Sole Metal Atom Patents (Class 528/214)
  • Publication number: 20140011972
    Abstract: Provided herein are novel processes for synthesis of polymers and/or polymer composites.
    Type: Application
    Filed: February 7, 2012
    Publication date: January 9, 2014
    Applicant: GRAPHEA, INC.
    Inventors: Christopher W. Bielawski, Daniel R. Dreyer
  • Publication number: 20120309927
    Abstract: Polyarylene ether is polymerized using a dissolving agent including anisole, wherein the polyarylene ether includes about 1 to about 3,000 ppm of anisole.
    Type: Application
    Filed: December 13, 2011
    Publication date: December 6, 2012
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Yong Tae KIM, Jin Kyu KIM, Bok Nam JANG, Joong In KIM, Young Jun KIM, Ji Heung KIM, Chang Jae LEE
  • Patent number: 8048979
    Abstract: The present invention involves the design of a radiation curable organic pre polymer resin material based on urethane acrylic linkage synthesized from the natural renewable resource cardanol or a derivative thereof, for coating application. These new molecules have a faster and better curing rate compared to the starting renewable resource—cardanol. This is brought about by the hydrogen bonding of the urethane linkage which leads to a pre organization of the molecules in such a way as to bring the cross linkable double bonds closer to each other. The present invention also involves a UV curable formulation of the above mentioned resins along with 2-10 parts by weight of a photopolymerization initiator. The resin, either in a formulation or alone turns into a cross linked film upon photopolymerization in presence of photoinitiator under a UV curable radiation source like a mercury vapor pressure lamp.
    Type: Grant
    Filed: December 30, 2005
    Date of Patent: November 1, 2011
    Assignee: Council of Scientific and Industrial Research
    Inventors: Asha Syamakumari, Chennakkattu Krishna Sadasivan Pillai
  • Patent number: 7968672
    Abstract: A phenol aralkyl type phenolic resin represented by the general formula (1), wherein the total content of the compounds represented by formulae (2) to (4) is 58 to 92% as determined by GPC and the contents of the compounds represented by formulae (2) to (4) as determined by HPLC satisfy the following relationship: 0.60?(2a+b)/(2a+2b+2c)?0.90 wherein a is the content of the compound of formula (2); b is the content of the compound of formula (3); and c is the content of the compound of formula (4).
    Type: Grant
    Filed: November 29, 2006
    Date of Patent: June 28, 2011
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Katsuhiko Oshimi, Shigeru Moteki, Takao Sunaga, Masataka Nakanishi, Sumio Ichimura
  • Patent number: 7838618
    Abstract: A process for producing a phenylene ether oligomer comprising oxidative polymerization of a specific bivalent phenol compound and a specific monovalent phenol compound in an aromatic hydrocarbon solvent, wherein the aromatic hydrocarbon solvent of a phenylene ether oligomer solution obtained after the termination of the polymerization is replaced with a water-soluble organic solvent having a boiling point higher than that of the aromatic hydrocarbon solvent and the resultant phenylene ether oligomer solution is brought into contact with water, thereby precipitating the phenylene ether oligomer as particles.
    Type: Grant
    Filed: May 24, 2007
    Date of Patent: November 23, 2010
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Kiyonari Hiramatsu, Yoshio Mukai, Hidemi Hirashima, Yuji Takeda
  • Publication number: 20100160594
    Abstract: A melt polymerized polycarbonate comprising repeat units in the polycarbonate derived from the melt polymerization of monomers (II) and/or (III), monomer (IV), and optionally monomer (VIII), wherein monomers (II) and (III) are diaryl dihydroxy compounds, monomer (IV) is a sterically hindered dihydroxy compound, and monomer (VIII) is a non-sterically hindered dihydroxy diaryl compound; wherein the mole ratio of repeat units in the polycarbonate derived from monomers [(II)+(III)]:(IV):(VIII) is 15-70:1-85:0-50, the sum of the mole percent of repeat units in the polycarbonate derived from monomers [(II)+(III)]+(IV) is greater than or equal to 50 mole %, and the sum of the mole percent of units in the polycarbonate derived from monomers [(II)+(III)]+(IV) +(VIII) is 100 mole %; and wherein the polycarbonate has an L* value that is at least 1 L* unit value higher than the same polycarbonate in which monomer (IV) is replaced by bisphenol A.
    Type: Application
    Filed: December 18, 2008
    Publication date: June 24, 2010
    Inventors: Hans-Peter BRACK, Dennis Karlik, Jan-Pleun Lens, Dennis James Patrick Maria Willemse, Josef Gerardus Berndsen
  • Patent number: 7687570
    Abstract: A thermosetting resin material is provided with: (A) a thermosetting resin having a dihydrobenzoxazine ring; and (B) a condensed polycyclic aromatic hydrocarbon resin is described.
    Type: Grant
    Filed: June 20, 2008
    Date of Patent: March 30, 2010
    Assignee: Akebono Brake Industry Co., Ltd.
    Inventors: Shou Kurihara, Hiroshi Idei, Yoshihiro Aoyagi, Naeko Okumura
  • Patent number: 7649075
    Abstract: A process for preparing polyphenylene ether by oxidizing phenols using water as a solvent, enabling polyphenylene ether to be prepared with only a small amount of oxidizer, while making it possible to reuse a solvent after reaction repeatedly. Water is used as the solvent. Phenols are oxidized under the presence of a water-soluble metal complex catalyst. For the water-soluble metal complex catalyst, it is preferable to use the one whose central metal is copper or manganese, having an amine multidentate ligand.
    Type: Grant
    Filed: September 7, 2005
    Date of Patent: January 19, 2010
    Assignee: Waseda University
    Inventors: Hiroyuki Nishide, Kei Saito
  • Publication number: 20090286929
    Abstract: A phenol aralkyl type phenolic resin represented by the general formula (1), wherein the total content of the compounds represented by formulae (2) to (4) is 58 to 92% as determined by GPC and the contents of the compounds represented by formulae (2) to (4) as determined by HPLC satisfy the following relationship: 0.60?(2a+b)/(2a+2b+2c)?0.90 wherein a is the content of the compound of formula (2); b is the content of the compound of formula (3); and c is the content of the compound of formula (4).
    Type: Application
    Filed: November 29, 2006
    Publication date: November 19, 2009
    Inventors: Katsuhiko Oshimi, Shigeru Moteki, Takao Sunaga, Masataka Nakanishi, Sumio Ichimura
  • Publication number: 20090176962
    Abstract: A process for producing a phenylene ether oligomer comprising oxidative polymerization of a specific bivalent phenol compound and a specific monovalent phenol compound in an aromatic hydrocarbon solvent, wherein the aromatic hydrocarbon solvent of a phenylene ether oligomer solution obtained after the termination of the polymerization is replaced with a water-soluble organic solvent having a boiling point higher than that of the aromatic hydrocarbon solvent and the resultant phenylene ether oligomer solution is brought into contact with water, thereby precipitating the phenylene ether oligomer as particles.
    Type: Application
    Filed: May 24, 2007
    Publication date: July 9, 2009
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Kiyonari Hiramatsu, Yoshio Mukai, Hidemi Hirashima, Yuji Takeda
  • Publication number: 20080246186
    Abstract: A method for making a polyarylene ether copolymer including mixing a polyarylene ether, a hydroxyaromatic terminated siloxane reagent and an oxidant, and melt compounding the mixture. A polyarylene ether copolymer including a polyarylene ether, a hydroxyaromatic terminated siloxane reagent, an oxidant and a filler is also presented.
    Type: Application
    Filed: April 9, 2007
    Publication date: October 9, 2008
    Inventors: Scott Michael Fisher, Susanta Banerjee, Subramanya Kishore Avadhanula Venkata, Anatharaman Dhanabalan, Vijay R. Mhetar, Abhijit Namjoshi
  • Patent number: 7282554
    Abstract: A low molecular weight polyphenylene ether having a reduced viscosity of 0.04 to 0.18 dl/g as measured at 30° C. in a 0.5 g/dl chloroform solution, and a molecular weight distribution of 1.5 to 2.5; or a low molecular weight polyphenylene ether powder comprising the low molecular weight polyphenylene ether exhibits high thermal resistance and excellent electric properties, and thus is useful as electric materials such as printed circuit board and as modifiers of other resins.
    Type: Grant
    Filed: February 28, 2003
    Date of Patent: October 16, 2007
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Akira Mitsui, Hiroaki Furukawa, Nobuyuki Ota
  • Patent number: 7282534
    Abstract: A resin composition comprising a polyphenylene ether produced by polymerizing a monomer component consisting of 100 parts by weight of 2,6-dimethylphenol and 0.5 to 7.5 parts by weight of o-cresol in the presence of both a catalyst and an oxygen-containing gas and a flame retardant. When the polyphenylene ether has a molecular weight distribution of 2.8 to 8.0, the resulting resin composition is more excellent in flame retardance, particularly anti-dripping properties in burning. The resin composition is applicable to not only electric and electronic applications necessitating high flame retardance but also other fields of application of polyphenylene ether resins.
    Type: Grant
    Filed: July 15, 2003
    Date of Patent: October 16, 2007
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Teruaki Sakuma, Akira Mitsui
  • Patent number: 7273918
    Abstract: Just like other conducting polymers, polyanilines are useful for many important electric and electrooptical applications. A self-doped polyaniline that contains a stable/immobile, covalently bonded acid moiety on the backbone is highly desired, due to their greater resistances to solvent-washing, rain-flushing, and thermal evaporation. The present invention discloses a new type of thermally stable self-doped functionalized polyanilines that are thermally much more stable than the previously reported sulfonated-polyaniline, which was believed to be the most thermally stable self-doped polyaniline known in the art. The present invention also discloses a new and effective method for making this new type of thermally stable self-doped functionalized polyanilines.
    Type: Grant
    Filed: September 23, 2004
    Date of Patent: September 25, 2007
    Inventors: Chien-Chung Han, Chia-Hui Lu
  • Patent number: 7205377
    Abstract: A method for preparing a poly(arylene ether) with a reduced level of powder fines is described. In one embodiment, the method comprises oxidatively coupling a monohydric phenol in the presence of a solvent and a complex metal catalyst, to produce a poly(arylene ether) resin; and then removing a portion of the solvent to produce a concentrated solution having a cloud point Tcloud. The concentrated solution is then combined with an anti-solvent to precipitate the poly(arylene ether) in the form of a precipitation mixture. The concentrated solution usually has a temperature of at least about (Tcloud?10° C.) immediately before it is combined with the anti-solvent. The precipitation mixture has a temperature of at least about (Tcloud?40° C.) after its formation. Related poly(arylene ether) copolymers are also described.
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: April 17, 2007
    Assignee: General Electric Company
    Inventors: Hugo Gerard Eduard Ingelbrecht, Alexey Kruglov, Gert-Jan Schoenmakers
  • Patent number: 7060781
    Abstract: A 2,6-dimethylphenol composition having an m-cresol content of from 15 to 700 ppm on a weight basis has effects of drastically improving polymerization activity and particularly, improving the color tone of polyphenylene ethers. Therefore, the composition makes it possible to provide a preparation process having improved productivity, and at the same time, provide polyphenylene ethers having good quality.
    Type: Grant
    Filed: August 6, 2002
    Date of Patent: June 13, 2006
    Assignee: Asahi Kasei Chemicals Corporation
    Inventors: Akira Mitsui, Osamu Shoji, Hitoshi Ota
  • Patent number: 7049388
    Abstract: A process for manufacturing an ?-dihydroxy derivative from an aryl allyl ether wherein such ?-dihydroxy derivative can be used to prepare an ?-halohydrin intermediate and an epoxy resin prepared therefrom including epoxidizing an ?-halohydrin intermediate produced from a halide substitution of an ?-dihydroxy derivative which has been obtained by a dihydroxylation reaction of an aryl allyl ether in the presence of an oxidant or in the presence of an oxidant and a catalyst.
    Type: Grant
    Filed: September 9, 2003
    Date of Patent: May 23, 2006
    Assignee: Dow Global Technologies Inc.
    Inventors: Clinton J. Boriack, Zeng K. Liao, Thomas H. Kalantar
  • Patent number: 7034100
    Abstract: The present invention is related to the functionalized polyanilines and also to a method for making said functionalized polyanilines.
    Type: Grant
    Filed: December 5, 2001
    Date of Patent: April 25, 2006
    Inventor: Chien-Chung Han
  • Patent number: 6977050
    Abstract: The present invention relates to a method of synthesizing lignosulfonic acid-doped polyaniline by oxidatively polymerizing aniline in the presence of transition metal ions selected from the group consisting of Ag(I), Fe(II), and Fe(III) salts. The present invention also relates to a method for the preparation of transition metals from transition metal salts by exposing transition metal ion containing materials to an aqueous dispersion of lignosulfonic acid-doped polyaniline.
    Type: Grant
    Filed: April 7, 2004
    Date of Patent: December 20, 2005
    Assignee: Polyone Corporation
    Inventor: Tito Viswanathan
  • Patent number: 6916900
    Abstract: A method of making polyaniline grafted lignosulfonic acid is disclosed. The method comprises mixing of aniline and a lignosulfonate in the presence of a transition metal salt.
    Type: Grant
    Filed: April 5, 2004
    Date of Patent: July 12, 2005
    Assignee: GeoTech Chemical Company, LLC
    Inventor: Tito Viswanathan
  • Publication number: 20040054121
    Abstract: A method of precipitating a poly(arylene ether) includes preparing a poly(arylene ether) solution comprising a poly(arylene ether) and a solvent, combining the poly (arylene ether) solution with an antisolvent to form a poly(arylene ether) dispersion comprising a poly(arylene ether) solid, separating the poly(arylene ether) solid from the poly(arylene ether) dispersion to form an isolated poly(arylene ether) solid, determining a particle size distribution of the poly(arylene ether) solid prior to separating the poly(arylene ether) solid from the poly(arylene ether) dispersion, and adjusting a precipitation parameter in response to the particle size distribution. Although the measured particle size distribution is very different from the particle size distribution of the solid poly(arylene ether) ultimately isolated, it is useful for controlling the process. The method may be automated to rapidly adjust precipitation conditions in response to the particle size distribution measurements.
    Type: Application
    Filed: September 13, 2002
    Publication date: March 18, 2004
    Inventors: Rudy Francois Alain Jos Peemans, Wiebe Knol, Peter Groefsema
  • Patent number: 6667104
    Abstract: A phenol resin composition for wet friction material comprising a curable resin composition obtained by mixing a resol-type phenol resin and a hydrolysis solution of an alkoxysilane or a condensate thereof, wherein the ratio by weight of the nonvolatile components of the resol-type phenol resin (R) and the nonvolatile components of the hydrolysis solution of the alkoxysilane or the condensate thereof (S), obtained after heat-treatment at 135° C. for one hour, is in the range of 64/36 to 10/90.
    Type: Grant
    Filed: June 4, 2002
    Date of Patent: December 23, 2003
    Assignees: Sumitomo Bakelite Company Limited, NSK-Warner K.K.
    Inventors: Hiroshi Aiba, Masahiro Mori
  • Patent number: 6646102
    Abstract: A process for manufacturing an &agr;-dihydroxy derivative from an aryl allyl ether wherein such &agr;-dihydroxy derivative can be used to prepare an &agr;-halohydrin intermediate and an epoxy resin prepared therefrom including epoxidizing an &agr;-halohydrin intermediate produced from a halide substitution of an &agr;-dihydroxy derivative which has been obtained by a dihydroxylation reaction of an aryl allyl ether in the presence of an oxidant or in the presence of an oxidant and a catalyst.
    Type: Grant
    Filed: July 5, 2001
    Date of Patent: November 11, 2003
    Assignee: Dow Global Technologies Inc.
    Inventors: Clinton J. Boriack, Zeng K. Liao, Thomas H. Kalantar
  • Patent number: 6469128
    Abstract: A process for producing a poly(arylene ether) resins includes oxidatively coupling a monohydric phenol in the presence of a solvent and a catalyst to form a soluble poly(arylene ether) and an insoluble poly(arylene ether), separating the soluble poly(arylene ether) and the insoluble poly(arylene ether), and recycling the soluble poly(arylene ether). The process is particularly useful for synthesizing poly(arylene ether) copolymers in which the monomer compositions of soluble and insoluble copolymers may vary.
    Type: Grant
    Filed: August 7, 2001
    Date of Patent: October 22, 2002
    Assignee: General Electric Company
    Inventors: Hua Guo, Hugo Gerard Eduard Ingelbrecht, David Parrillo, Probjot Singh
  • Patent number: 6455663
    Abstract: The invention relates to a novel process for the manufacture of functionalized polyphenylene ether resins through redistribution with a functionalized phenolic compound in the polyphenylene ether resin polymerization reaction solution without the addition of an added redistribution catalyst or promoter. The invention also relates to the functionalized polyphenylene ether resin made by the process as well as blends and articles containing the functionalized polyphenylene ether resin made by the process.
    Type: Grant
    Filed: August 30, 2001
    Date of Patent: September 24, 2002
    Assignee: General Electric Company
    Inventors: Adrianus J. F. M. Braat, Hugo G. E. Engelbrecht, Juraj Liska
  • Patent number: 6444779
    Abstract: A method of preparing a poly(arylene ether) includes oxidatively polymerizing a monohydric phenol in solution, concentrating the solution by removing a portion of the solvent to form a concentrated solution having a cloud point, Tcloud, adjusting the temperature of the concentrated solution to at least about (Tcloud−10° C.), and combining the concentrated solution with an anti-solvent to precipitate the poly (arylene ether). The method reduces the formation of undesirably fine particles in the product poly(arylene ether).
    Type: Grant
    Filed: February 19, 2002
    Date of Patent: September 3, 2002
    Assignee: General Electric Company
    Inventors: Probjot Singh, Hugo Gerard Eduard Ingelbrecht, David Parrillo, Mukund Parthasarathy
  • Patent number: 6437084
    Abstract: A method of preparing a poly(arylene ether) includes oxidatively coupling a monohydric phenol in a reaction solution at a reaction temperature that exceeds the cloud point temperature of the reaction solution. The oxidative coupling occurs in the presence of a metal complex catalyst, and when the catalyst includes an amine ligand, the method facilitates incorporation of the amine ligand into the poly(arylene ether) resin. The amine-incorporated poly(arylene ether) resins prepared by the method are useful in the preparation of higher molecular weight poly(arylene ether) resins and compatibilized blends of poly(arylene ether) resins with other thermoplastics.
    Type: Grant
    Filed: November 12, 2001
    Date of Patent: August 20, 2002
    Assignee: General Electric Company
    Inventors: Joop Birsak, Hugo Gerard Eduard Ingelbrecht, David Parrillo, Mukund Parthasarathy, Probjot Singh
  • Patent number: 6429277
    Abstract: The invention relates to a novel process for the manufacture of very low molecular weight polyphenylene ether resin, typically within the intrinsic viscosity range of about 0.08 dl/g to about 0.16 dl/g as measured in chloroform at 25° C. The method preferably comprises 2,6-dimethylphenol as a monovalent phenol species. The invention also relates to the polyphenylene ether resin made by the process as well as blends and articles containing the polyphenylene ether resin made by the process.
    Type: Grant
    Filed: August 30, 2001
    Date of Patent: August 6, 2002
    Assignee: General Electric
    Inventors: Adrianus J. F. M. Braat, Hugh Ingelbrecht, Ruud Trion
  • Patent number: 6407200
    Abstract: A method of preparing a poly(arylene ether) includes oxidatively polymerizing a monohydric phenol in solution, concentrating the solution by removing a portion of the solvent to form a concentrated solution having a cloud point, Tcloud, and combining the concentrated solution with an anti-solvent to precipitate the poly (arylene ether), wherein the concentrated solution has a temperature of at least about (Tcloud−10° C.) immediately before it is combined with the anti-solvent. The method reduces the formation of undesirably fine particles in the product poly(arylene ether).
    Type: Grant
    Filed: June 21, 2001
    Date of Patent: June 18, 2002
    Assignee: General Electric Company
    Inventors: Probjot Singh, Hugo Gerard Eduard Ingelbrecht, David Parrillo, Mukund Parthasarathy
  • Publication number: 20020055608
    Abstract: The invention relates to a novel process for the manufacture of very low molecular weight polyphenylene ether resin, typically within the intrinsic viscosity range of about 0.08 dl/g to about 0.16 dl/g as measured in chloroform at 25° C. The method preferably comprises 2,6-dimethylphenol as a monovalent phenol species.
    Type: Application
    Filed: August 30, 2001
    Publication date: May 9, 2002
    Inventors: Adrianus J.F.M. Braat, Hugo Ingelbrecht, Ruud Trion
  • Patent number: 6380346
    Abstract: The present invention is related to a method for making functionalized polyanilines.
    Type: Grant
    Filed: January 18, 2000
    Date of Patent: April 30, 2002
    Inventor: Chien-Chung Han
  • Publication number: 20020042494
    Abstract: The invention relates to a novel process for the manufacture of functionalized polyphenylene ether resins through redistribution with a functionalized phenolic compound in the polyphenylene ether resin polymerization reaction solution without the addition of an added redistribution catalyst or promoter.
    Type: Application
    Filed: August 30, 2001
    Publication date: April 11, 2002
    Inventors: Adrianus J.F.M. Braat, Hugo G.E. Engelbrecht, Juraj Liska
  • Patent number: 6362314
    Abstract: A process of controlling the molecular weight and dispersity of poly(p-ethylphenol) and poly(m-cresol) synthesized enzymatically by varying the composition of the reaction medium. Polymers with low dispersities and molecular weights from 1000 to 3000 are synthesized in reversed micelles and biphasic systems. In comparison, reactions in bulk solvents resulted in a narrow range of molecular weights (281 to 675 with poly(p-ethylphenol) in a DMF/water system and 1,400 to 25,000 with poly(m-cresol) in an ethanol/water system). Poly(p-ethylphenol) was functionalized at hydroxyl positions with palmitoyl, cinnamoyl, and biotin groups.
    Type: Grant
    Filed: February 4, 1999
    Date of Patent: March 26, 2002
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Joseph A. Akkara, David L. Kaplan, Madhu Ayyagari
  • Patent number: 6362315
    Abstract: A process of controlling the molecular weight and dispersity of poly(p-ethylphenol) and poly(m-cresol) synthesized enzymatically by varying the composition of the reaction medium. Polymers with low dispersities and molecular weights from 1000 to 3000 are synthesized in reversed micelles and biphasic systems. In comparison, reactions in bulk solvents resulted in a narrow range of molecular weights (281 to 675 with poly(p-ethylphenol) in a DMF/water system and 1,400 to 25,000 with poly(m-cresol) in an ethanol/water system). Poly(p-ethylphenol) was functionalized at hydroxyl positions with palmitoyl, cinnamoyl, and biotin groups.
    Type: Grant
    Filed: February 4, 1999
    Date of Patent: March 26, 2002
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Joseph A. Akkara, David L. Kaplan, Madhu Ayyagari
  • Patent number: 6323262
    Abstract: In a continuous process for producing filler-containing silicone compositions (P), a silicone composition (E) comprising filler (F1) is mixed with filler (F2).
    Type: Grant
    Filed: February 25, 2000
    Date of Patent: November 27, 2001
    Assignee: Wacker-Chemie GmbH
    Inventors: Frank Achenbach, Manfred Heisler, Armin Fehn, Christof Wörner
  • Patent number: 6307010
    Abstract: The invention relates to a novel process for the manufacture of functionalized polyphenylene ether resins through redistribution with a functionalized phenolic compound in the polyphenylene ether resin polymerization reaction solution without the addition of an added redistribution catalyst or promoter. The invention also relates to the functionalized polyphenylene ether resin made by the process as well as blends and articles containing the functionalized polyphenylene ether resin made by the process.
    Type: Grant
    Filed: February 5, 1999
    Date of Patent: October 23, 2001
    Assignee: General Electric Company
    Inventors: Adrianus J. F. M. Braat, Hugo G. E. Engelbrecht, Juraj Liska
  • Patent number: 6303748
    Abstract: The invention relates to a novel process for the manufacture of very low molecular weight polyphenylene ether resin, typically within the intrinsic viscosity range of about 0.08 dl/g to about 0.16 dl/g as measured in chloroform at 25° C. The method preferably comprises 2,6-dimethylphenol as a monovalent phenol species. The invention also relates to the polyphenylene ether resin made by the process as well as blends and articles containing the polyphenylene ether resin made by the process.
    Type: Grant
    Filed: December 13, 2000
    Date of Patent: October 16, 2001
    Assignee: General Electric Company
    Inventors: Adrianus J. F. M. Braat, Hugh Ingelbrecht, Ruud Trion
  • Patent number: 6299800
    Abstract: The invention provides conductive compositions of matter, as well as methods for the preparation of the conductive compositions of matter, solutions comprising the conductive compositions of matter, and methods of preparing fibers or fabrics having improved anti-static properties employing the conductive compositions of matter.
    Type: Grant
    Filed: February 17, 2000
    Date of Patent: October 9, 2001
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: Tito Viswanathan
  • Patent number: 6300461
    Abstract: The invention relates to a novel process for the manufacture of very low molecular weight polyphenylene ether resin, typically within the intrinsic viscosity range of about 0.08 dl/g to about 0.16 dl/g as measured in chloroform at 25° C. The method preferably comprises 2,6-dimethylphenol as a monovalent phenol species. The invention also relates to the polyphenylene ether resin made by the process as well as blends and articles containing the polyphenylene ether resin made by the process.
    Type: Grant
    Filed: December 13, 2000
    Date of Patent: October 9, 2001
    Assignee: General Electric Company
    Inventors: Adrianus J. F. M. Braat, Hugh Ingelbrecht, Ruud Trion
  • Patent number: 6265521
    Abstract: Polyether polymers such as polyetherimides are prepared by a two-step reaction. The first step is the reaction between an alkali metal salt of a dihydroxy-substituted aromatic hydrocarbon, such as bisphenol A disodium salt, and a substituted aromatic compound such as 1,3-bis[N-(4-chlorophthalimido)]benzene, the alkali metal salt being employed in an amount less than stoichiometric. The intermediate low molecular weight polymer thus produced then undergoes reaction with additional alkali metal salt. By this method, a polyether polymer of closely controlled molecular weight can be conveniently prepared.
    Type: Grant
    Filed: August 7, 2000
    Date of Patent: July 24, 2001
    Assignee: General Electric Company
    Inventors: Thomas Joseph Fyvie, Peter David Phelps, Paul Edward Howson, Donald Frank Rohr, Ganesh Kailasam, Elliott West Shanklin
  • Publication number: 20010007013
    Abstract: The present invention provides a method for producing a formed article from a dope comprising a polyphosphoric acid solvent and a polymer soluble in polyphosphoric acid, which includes using a production apparatus containing an apparatus for stirring and uniformly dispersing or homogenizing a dope and a pump apparatus for delivering the uniformly dispersed or homogeneous dope, wherein at least one of the apparatus and the pump apparatus has a part that comes into contact with the dope. According to the present invention, maintenance frequency of production facility due to the corrosion and elution of metal in a recovered solvent can be reduced, which in turn decreases the production cost.
    Type: Application
    Filed: December 12, 2000
    Publication date: July 5, 2001
    Inventors: Yoshihiko Teramoto, Shoichi Uemura, Kiyoshi Hotta
  • Publication number: 20010003774
    Abstract: A process of controlling the molecular weight and dispersity of poly(p-ethylphenol) and poly(m-cresol) synthesized enzymatically by varying the composition of the reaction medium. Polymers with low dispersities and molecular weights from 1000 to 3000 are synthesized in reversed micelles and biphasic systems. In comparison, reactions in bulk solvents resulted in a narrow range of molecular weights (281 to 675 with poly(p-ethylphenol) in a DMF/water system and 1,400 to 25,000 with poly(m-cresol) in an ethanol/water system). Poly(p-ethylphenol) was functionalized at hydroxyl positions with palmitoyl, cinnamoyl, and biotin groups.
    Type: Application
    Filed: February 4, 1999
    Publication date: June 14, 2001
    Inventors: JOSEPH A. AKKARA, DAVID L. KAPLAN, MADHO AYYAGARI
  • Publication number: 20010002417
    Abstract: A process of controlling the molecular weight and dispersity of poly(p-ethylphenol) and poly(n-cresol) synthesized enzymatically by varying the composition of the reaction medium. Polymers with low dispersities and molecular weights from 1000 to 3000 are synthesized in reversed micelles and biphasic systems. In comparison, reactions in bulk solvents resulted in a narrow range of molecular weights (281 to 675 with poly(p-ethylphenol) in a DMF/water system and 1,400 to 25,000 with poly(m-cresol) in an ethanol/water system). Poly(p-ethylphenol) was functionalized at hydroxyl positions with palmitoyl, cinnamoyl, and biotin groups.
    Type: Application
    Filed: February 4, 1999
    Publication date: May 31, 2001
    Inventors: JOSEPH A. AKKARA, DAVID L. KAPLAN, MADHU AYYAGARI
  • Patent number: 6235870
    Abstract: Process for the preparation of compounds of the formula wherein Hal represents chlorine, bromine or iodine and preferably chlorine, wherein Ra represents hydrogen or a residue comprising one or more additional groups of the formula, from compounds wherein R2 represents hydrogen or a residue comprising one or more additional groups of the formula by reaction with gaseous hydrogen halide in the presence of a catalytic amount of an organic acid; process for the preparation of epoxy compounds starting from the reaction to produce a compound of formula (III) which is converted to a compound of formula (A) that is dehydrohalogenated to form the epoxy rings of a diepoxy compound.
    Type: Grant
    Filed: September 29, 1999
    Date of Patent: May 22, 2001
    Assignee: Shell Oil Company
    Inventors: Jozef Jacobus Titus Smits, Judith Johanna Berendina Walhof
  • Publication number: 20010000520
    Abstract: The invention relates to a novel process for the manufacture of very low molecular weight polyphenylene ether resin, typically within the intrinsic viscosity range of about 0.08 dl/g to about 0.16 dl/g as measured in chloroform at 25° C. The method preferably comprises 2,6-dimethylphenol as a monovalent phenol species.
    Type: Application
    Filed: December 13, 2000
    Publication date: April 26, 2001
    Applicant: General Electric Co.
    Inventors: Adrianus J.F.M. Braat, Hugo Ingelbrecht, Ruud Trion
  • Patent number: 6211327
    Abstract: The invention relates to a novel process for the manufacture of very low molecular weight polyphenylene ether resin, typically within the intrinsic viscosity range of about 0.08 dl/g to about 0.16 dl/g as measured in chloroform at 25° C. The method preferably comprises 2,6-dimethylphenol as a monovalent phenol species. The invention also relates to the polyphenylene ether resin made by the process as well as blends and articles containing the polyphenylene ether resin made by the process.
    Type: Grant
    Filed: February 5, 1999
    Date of Patent: April 3, 2001
    Assignee: General Electric Company
    Inventors: Adrianus J. F. M. Braat, Hugo Ingelbrecht, Ruud Trion
  • Patent number: 6150491
    Abstract: Polyaromatic compound made by polymerizing one or more aromatic monomers, least one of the one or more aromatic monomers having the following structure: ##STR1## wherein X is selected from the group consisting of OH and NH.sub.2, Y is selected from the group consisting of a halogen, a halogen-containing group, a boron-containing group, a phosphorus-containing group, a carboxyl group, a hydroxyacid group, a carboxyacid group, an amino group, an amino acid group, an amide group, an ester group, a hydroxyl group and a sulfonic acid group, R is an alkyl, phenyl, naphthyl, hydroxyphenyl, hydroxy naphthyl or hydroxy (.alpha., .beta., .gamma.) alkyl group, and n is an integer from 0 to 12. The (R).sub.n --Y group is preferably either ortho or para to X and more preferably is para to X.
    Type: Grant
    Filed: November 6, 1998
    Date of Patent: November 21, 2000
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Joseph A Akkara
  • Patent number: 6096859
    Abstract: A process of controlling the molecular weight and dispersity of poly(p-ethylphenol) and poly(m-cresol) synthesized enzymatically by varying the composition of the reaction medium. Polymers with low dispersities and molecular weights from 1000 to 3000 are synthesized in reversed micelles and biphasic systems. In comparison, reactions in bulk solvents resulted in a narrow range of molecular weights (281 to 675 with poly(p-ethylphenol) in a DMF/water system and 1,400 to 25,000 with poly(m-cresol) in an ethanol/water system). Poly(p-ethylphenol) was functionalized at hydroxyl positions with palmitoyl, cinnamoyl, and biotin groups.
    Type: Grant
    Filed: January 16, 1996
    Date of Patent: August 1, 2000
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Joseph A. Akkara, David L. Kaplan, Madhu Ayyagari
  • Patent number: 6037438
    Abstract: A cyanate resin composition comprising as essential components a cyanate compound represented by formula (1) or its prepolymer and a curing agent: ##STR1## wherein each of R.sub.1 and R.sub.2 represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms; A represents an alkyl group having 1 to 3 carbon atoms; i represents an integer of 0 to 3 alone or together with a brominated epoxy compound or a maleimide compound or its prepolymer, said cyanate resin composition giving a cured product having a low-dielectric constant, and a copper-clad laminate composed of a prepreg of said cyanate resin composition and a copper foil.
    Type: Grant
    Filed: December 19, 1995
    Date of Patent: March 14, 2000
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Yasuhiro Endo, Yoichi Ueda, Toshiaki Hayashi, Mitsuhiro Shibata, Shuichi Kanagawa, Shinichiro Kitayama, Hisashi Watabu
  • Patent number: RE37370
    Abstract: A method of emulsion polymerization of aniline or substituted anilines for making substituted or unsubstituted homopolymers and co-polymers of aniline. The method includes formation of an emulsion of aniline monomers, polar solvent, non-polar or weakly polar solvent and functionalized protonic acid, which is selected for its ability to perform two functions: acting as a surfactant and acting as a protonating agent (dopant) in producing an electrically conducting polymer. Then, an oxidant is added to polymerize the ingredients of the emulsion. This method provides polyaniline particles of highly crystalline and oriented morphologies of controlled aspect ratios.
    Type: Grant
    Filed: February 28, 1997
    Date of Patent: September 18, 2001
    Assignee: Neste Oy
    Inventors: Yong Cao, Jan-Erik Österholm