Aromatic, E.g., Styrene, Etc. Patents (Class 526/329.2)
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Patent number: 7226980Abstract: A curable composition includes a poly(arylene ether) and a fused alicyclic (meth)acrylate monomer. Also described are a method of preparing the composition, a cured composition derived from the curable composition, and an article comprising the cured composition. The composition is useful, for example, as a bulk molding compound.Type: GrantFiled: August 7, 2003Date of Patent: June 5, 2007Assignee: General Electric CompanyInventor: Gary William Yeager
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Patent number: 7217774Abstract: Disclosed are polymers comprising 2-(7-benzothiazolyl-9,9-disubstituted fluorene) structural units of the formula wherein R1 and R2 are each independently an alkyl group, an aralkyl group, an aryl group, or an —Si(R)3 group wherein R is an alkyl group; R3 is selected from the group consisting of an electron-donating substituent and an electron-withdrawing substituent; x has the value of from zero up to the number of hydrogens available for substitution on the aromatic ring; Z and Q are each independently a group which is in conjugation with both the fluorene group and the benzothiazole group; and the parameters j and k each independently have the value of 0–2. Electroactive devices comprising said polymers, methods for preparing said polymers, and monomers for preparing said polymers are also disclosed.Type: GrantFiled: April 1, 2004Date of Patent: May 15, 2007Assignee: General Electric CompanyInventors: Kyle Erik Litz, Joseph John Shiang, Christian Maria Anton Heller
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Patent number: 7211537Abstract: A modified aluminum oxy compound (A) obtained by reacting an aluminum oxy compound (a), water (b) and a compound having a hydroxyl group (c); a polymerization catalyst component comprising the modified aluminum oxy compound; a polymerization catalyst obtained by contacting said modified aluminum oxy compound (A), a transition metal compound (B) and optionally an organoaluminum compound (C) and a specified boron compound; and a process for producing an olefin polymer or an alkenyl aromatic hydrocarbon polymer with the polymerization catalyst.Type: GrantFiled: April 26, 2005Date of Patent: May 1, 2007Assignee: Sumitomo Chemical Company LimitedInventors: Masayuki Fujita, Tatsuya Miyatake, Yoshinori Seki, Nobuo Oi
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Patent number: 7199213Abstract: A curable composition includes a poly(arylene ether) and a fused alicyclic (meth)acrylate monomer. Also described are a method of preparing the composition, a cured composition derived from the curable composition, and an article comprising the cured composition. The composition is useful, for example, as a bulk molding compound.Type: GrantFiled: January 5, 2005Date of Patent: April 3, 2007Assignee: General Electric CompanyInventor: Gary William Yeager
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Patent number: 7172850Abstract: The present invention provides an imageable element including a lithographic substrate and an imageable layer disposed on the substrate. The imageable layer includes a radically polymerizable component, an initiator system capable of generating radicals sufficient to initiate a polymerization reaction upon exposure to imaging radiation, and a polymeric binder having a hydrophobic backbone and including both constitutional units having a pendant cyano group attached directly to the hydrophobic backbone, and constitutional units having a pendant group including a hydrophilic poly(alkylene oxide) segment. The invention also provides a method for preparing a suitable polymeric binder. The method comprises contacting a combination of co-monomers in a solvent mixture consisting essentially of a (C1–C6) alkanol and water.Type: GrantFiled: July 15, 2004Date of Patent: February 6, 2007Assignee: Eastman Kodak CompanyInventors: Heidi M. Munnelly, Kevin B. Ray, Ting Tao, Shashikant Saraiya, Kouji Hayashi, Jianbing Huang
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Patent number: 7166686Abstract: The present invention provides pressure-sensitive adhesives having a refractive index of at least 1.48. The pressure-sensitive adhesives comprise at least one monomer containing a substituted or an unsubstituted aromatic moiety.Type: GrantFiled: June 30, 2005Date of Patent: January 23, 2007Assignee: 3M Innovative Properties CompanyInventors: David B. Olson, Bettie C. Fong, Ying-Yuh Lu, Cheryl L. Moore, Todd R. Williams
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Patent number: 7163992Abstract: A process for producing a copolymer which comprises reacting a vinyl monomer with a macromonomer composition containing a macromonomer. The macromonomer composition is obtained by polymerizing at a temperature of 160 to 350° C. a monomer mixture comprising 10 to 80 wt. % first vinyl monomer having an alkyl group in the ?-position, 0 to 30 wt. % styrene as an optional ingredient, and 0 to 90 wt. % one or more other vinyl monomers based on the total amount of all monomers.Type: GrantFiled: February 26, 2002Date of Patent: January 16, 2007Assignee: Toagosei Co., Ltd.Inventor: Michihiro Kaai
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Patent number: 7160965Abstract: A catalyst system useful to polymerize and co-polymerize polar and non-polar olefin monomers is formed by in situ reduction with a reducing agent of a catalyst precursor comprising {Cp*MRR?n}+{A}? wherein Cp* is a cyclopentadienyl or substituted cyclopentadienyl moiety; M is an early transition metal; R is a C1–C20 hydrocarbyl; R? are independently selected from hydride, C1–C20 hydrocarbyl, SiR?3, NR?2, OR?, SR?, GeR?3, SnR?3, and C?C-containing groups (R?=C1–C10 hydrocarbyl); n is an integer selected to balance the oxidation state of M; and A is a suitable non-coordinating anionic cocatalyst or precursor. This catalyst system may form stereoregular olefin polymers including syndiotactic polymers of styrene and methylmethacrylate and isotactic copolymers of polar and nonpolar olefin monomers such as methylmethacrylate and styrene.Type: GrantFiled: May 4, 2005Date of Patent: January 9, 2007Assignee: Northwestern UniversityInventors: Tobin J. Marks, Lubin Luo, Sung Cheol Yoon
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Patent number: 7157537Abstract: The invention relates to ?-halocarboxylic acid esters of polyhydric, at least trihydric, alcohols, which can be used as initiators for ATRP. Using those initiators it is possible to prepare block copolymers having branched structures.Type: GrantFiled: February 26, 2004Date of Patent: January 2, 2007Assignee: Ciba Specialty Chemicals CorporationInventors: Andreas Mühlebach, François Rime
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Patent number: 7115691Abstract: A polymer composition for use in forming a stent is described. The composition includes a monomer of an aliphatic ester of acrylic acid which has a glass transition temperature less than 25° C. and a second monomer that copolymerizes with the first monomer and which has a glass transition temperature greater than 25° C. The components in the composition are mixed in amounts suitable to give a copolymer having a glass transition temperature less than 25° C., or in case of block copolymers, having at least one glass transition temperature less than 25° C. A stent including polymer members formed from the described composition is also disclosed.Type: GrantFiled: September 24, 2003Date of Patent: October 3, 2006Assignee: Quanam Medical CorporationInventors: Angelica Alvarado, Robert Eury, Irina D. Pomerantseva, Michael Froix
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Patent number: 7083645Abstract: A high refractive index, foldable polymer suitable for use in ophthalmic devices, such as intraocular lenses, is provided. The polymer may be produced from a polymerization reaction of first, second and third monomeric components and a crosslinking agent. The first monomeric component includes an aryl acrylate or an aryl methacrylate. The second monomeric component, which is not an acrylate, includes a monomer having an aromatic ring with a substituent having at least one site of ethylenic unsaturation. The third monomeric component includes a high water content hydrogel-forming monomer. The resulting high refractive index copolymer is durable enough to be cut and polished when dry, and becomes soft and foldable when hydrated.Type: GrantFiled: July 30, 2001Date of Patent: August 1, 2006Assignee: Advanced Vision Science, Inc.Inventor: Khalid Mentak
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Patent number: 7074860Abstract: The present invention relates to a composition and process for enhancing the controlled radical polymerization in the presence of nitroxyls and nitroxylethers by adding a chain transfer agent selected from the group consisting of mercaptanes, thioethers and disulfides to the polymerizable mixture. A further subject of the invention is the use of mercaptanes, thioethers and disulfides for increasing rate and yield of controlled radical polymerizations in the presence of a nitroxyl or a nitroxylether.Type: GrantFiled: September 18, 2001Date of Patent: July 11, 2006Assignee: Ciba Specialty Chemicals Corp.Inventors: Wiebke Wunderlich, Rudolf Pfaendner
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Patent number: 7067581Abstract: The invention relates to a repulpable pressure-sensitive adhesive. Provision is made for the repulpable pressure-sensitive adhesive to comprise at least one polyacrylate-based block copolymer.Type: GrantFiled: November 24, 2003Date of Patent: June 27, 2006Assignee: tesa AktiengesellschaftInventors: Marc Husemann, Stephan Zöllner, Andreas Westphal
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Patent number: 6967228Abstract: A functional polymer having at least one substituent capable of forming a stable free radical is formed by polymerizing a diene monomer, such as butadiene, to form a first polymer block of the functional polymer. The first polymer block has a weight average molecular weight of less than 150,000. A vinyl aromatic monomer, such as styrene, is polymerized to form at least a second polymer block of the functional polymer. The copolymer is contacted with a stable free radical providing compound to form the functional polymer. By adding sufficient vinyl aromatic monomer, a low molecular weight functional rubber polymer can be rendered processable at ambient temperatures, while maintaining a solution viscosity which is suited to subsequent free radical catalyzation of vinyl aromatic monomers.Type: GrantFiled: May 1, 2003Date of Patent: November 22, 2005Assignee: Firestone Polymers, LLCInventors: Mark N. DeDecker, Daniel F. Graves
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Patent number: 6960638Abstract: The invention relates to polymer beads having a high content of diacyl peroxides. A prolongation of the pot life in reaction resins based on high-boiling methacrylate esters is achieved due to this high content of peroxides.Type: GrantFiled: July 9, 2002Date of Patent: November 1, 2005Assignee: Roehm GmbH & Co. KGInventors: Peter Quis, Heike Heeb, Helmut Schwind, Harald Draeger
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Patent number: 6864332Abstract: A process for polymerizing monomers in the gas phase, in fluidized bed reactors is described, where unsaturated, gas phase monomers are fed into the reactors in the presence of a mixture of inert diluents having a composition that allows the dew point to be adjusted, this leading to high production rates under stable operation in a non condensed operation mode.Type: GrantFiled: December 29, 2000Date of Patent: March 8, 2005Assignees: Braskem S.A., Convex InternationalInventors: Antonio Luiz Duarte Braganca, Antonio Luiz Ribeiro de Castro Morschbacker, Enio Rubbo, Cid Neto Miro, Tamara Barlem, Arj Mukherjee
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Patent number: 6858695Abstract: A curable casemaking adhesive, books and related articles bound thereby. In one embodiment, a UV curable hot melt adhesive is used to form the case, which is preferably also embossed. In another embodiment, a moisture curable hot melt adhesive is used to form the case, which is preferably also embossed.Type: GrantFiled: April 27, 2001Date of Patent: February 22, 2005Assignee: National Starch and Chemical Investment Holding CorporationInventors: Robert C. Schmidt, Jr., Michael T. Gefri, James W. Nowicki
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Patent number: 6858693Abstract: The invention provides carbamate-functional resins and coating compositions incorporating said resins that have improved adhesion with respect to subsequently applied films or coatings. More particularly, the invention relates to carbamate-functional addition polymers having at least 250 grams of polymer per carbamate group which are made with less than 35 percent by weight of nonfunctional monomers, preferably with less than 20 percent by weight and most preferably from 0 to less than 10 percent by weight, based on the total weight of the polymer. The invention further provides a method of making a carbamate-functional polymer and carbamate-functional polymers made by the claimed method. Finally, the invention provides a method for improving the adhesion of a first coating composition to a subsequently applied material as well as a method of making a composite comprising a coated substrate, an adhesive composition, and a glass having at least one surface.Type: GrantFiled: June 24, 2003Date of Patent: February 22, 2005Assignee: BASF CorporationInventors: Donald H. Campbell, Walter H. Ohrbom, Joseph Borst, Michael A. Gessner, Donald L. St. Aubin, Marvin L. Green, Bruce E. Oermann
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Patent number: 6855785Abstract: A heat-curable composition comprising (I) at least one constituent whose molecule comprises on average (A) at least one functional group containing at least one bond which may be activated by means of heat and/or actinic radiation, and/or (B) at least one reactive functional group which is able to undergo thermal crosslinking reactions with groups of its own kind and/or with complementary reactive functional groups, with the proviso that there are always groups (A) and (B) in the composition; said constituent excluding the polyurethane dispersion synthesized from aliphatic polyisocyanates, compounds containing isocyanate-reactive functional groups and containing bonds that may be activated with actinic radiation, low molecular mass aliphatic compounds containing isocyanate-reactive functional groups, compounds containing isocyanate-reactive functional groups and dispersing functional groups, neutralizing agents for the dispersing functional groups, blocking agents for isocyanate groups, and/or compounds cType: GrantFiled: August 22, 2001Date of Patent: February 15, 2005Assignee: BASF Coatings AGInventors: Hubert Baumgart, Uwe Meisenburg, Karl-Heinz Joost
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Patent number: 6855789Abstract: The invention provides carbamate-functional resins and coating compositions incorporating said resins that have improved adhesion with respect to subsequently applied films or coatings. More particularly, the invention relates to carbamate-functional addition polymers having at least 250 grams of polymer per carbamate group which are made with less than 35 percent by weight of nonfunctional monomers, preferably with less than 20 percent by weight and most preferably from 0 to less than 10 percent by weight, based on the total weight of the polymer. The invention further provides a method of making a carbamate-functional polymer and carbamate-functional polymers made by the claimed method. Finally, the invention provides a method for improving the adhesion of a first coating composition to a subsequently applied material as well as a method of making a composite comprising a coated substrate, an adhesive composition, and a glass having at least one surface.Type: GrantFiled: March 25, 2003Date of Patent: February 15, 2005Assignee: BASF CorporationInventors: Donald H. Campbell, Walter H. Ohrbom, Joseph Borst, Michael A. Gessner, Donald L. St. Aubin, Marvin L. Green, Bruce E. Oermann
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Patent number: 6855786Abstract: The present invention relates to a method of preparing an impact-reinforcement agent for polyvinylchloride (PVC) resin having superior anti-stress whitening properties, and specifically to a method for preparing a graft copolymer of methyl-methacrylate-butadiene-styrene (MBS) comprising 3 steps of graft-copolymerizing monomers such as alkylmethacrylate, acrylate, and an ethylene-unsaturated aromatic compound to a rubber latex, in sequence.Type: GrantFiled: October 26, 2001Date of Patent: February 15, 2005Assignee: LG Chemical Co., Ltd.Inventors: Joo-Sik Oh, Sung-Koo Noh, Ok-Youl Jeong
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Patent number: 6838537Abstract: The invention is directed to resin coating, adhesive, and cement compositions comprising styrenic copolymers and a solvent comprised of a terpene and certain high evaporation rate organic solvents. The high evaporation rate terpene co-solvents reduce the drying times of applied coatings and enhance the character of the ultimately applied coating in the formation of high adhesion bonding with molded elastomeric styrene copolymer surface substrates. The invention is also directed to a method of applying the instant coatings to substrate surfaces.Type: GrantFiled: January 2, 2003Date of Patent: January 4, 2005Assignee: Mattel, Inc.Inventor: Abimael Cordova
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Publication number: 20040266965Abstract: A method for making hydrophilic homopolymers and copolymers of poly 2-hydroxyethyl methacrylate. Also disclosed are coatings, films, hydrogels, cosmetic compositions, dermatological compositions, pressure sensitive adhesives containing the hydrophilic homopolymers or copolymers of poly 2-hydroxyethylmethacrylate. Further disclosed are methods of coating substrates with the hydrophilic homopolymers and copolymers of poly 2-hydroxyethyl methacrylate and hydrophilic pressure sensitive adhesives.Type: ApplicationFiled: March 12, 2004Publication date: December 30, 2004Applicant: Avery Dennison CorporationInventors: Daniel L. Holguin, H. Paul Barker, Kenneth S. Lin
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Patent number: 6835804Abstract: A polymer comprising recurring units of formula (2) is prepared by effecting deblocking reaction on a polymer comprising recurring units of formula (1) in the presence of an acid catalyst. In the formulae, R1 and R4 are H or methyl, R2 and R3 are C1-C10 alkyl, or R2 and R3 may form a ring, R5 is H, hydroxyl, alkyl, alkoxy or halogen, R6 and R7 are H, methyl, alkoxycarbonyl, cyano or halogen, R8 is C4-C20 tertiary alkyl, n is an integer of 0 to 4, p is a positive number, q and r each are 0 or a positive number, exclusive of q=r=0, p1 is a positive number, p2 is 0 or a positive number, and p1+p2=p. The polymer thus produced has a narrower molecular weight distribution than polymers produced by the prior art methods. A resist composition comprising the polymer as a base resin has advantages including a dissolution contrast of resist film, high resolution, exposure latitude, process flexibility, good pattern profile after exposure, and minimized line edge roughness.Type: GrantFiled: December 6, 2001Date of Patent: December 28, 2004Assignee: Shin-Etsu Chemical Co., LTD.Inventors: Takanobu Takeda, Osamu Watanabe
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Patent number: 6818717Abstract: Novel fluorine-containing paper sizes which impart oil and grease resistance to paper and soil-release properties to textile products are described which are the copolymerization products of (a) a perfluoroalkyl-substituted (meth)acrylate or (meth)acrylamide, (b) a secondary- or tertiary-amino or quaternary ammonium group-containing (meth)acrylate or (meth)acrylamide, (c) vinylidene chloride and, optionally, d) other copolymerizable nonfluorinated vinyl monomers.Type: GrantFiled: February 21, 2003Date of Patent: November 16, 2004Assignee: Ciba Specialty Chemicals CorporationInventor: Shobha Kantamneni
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Patent number: 6818684Abstract: The present invention is directed, in part, to improved polymer compositions and processes for preparing same. Specifically, in one embodiment, there is provided a process for preparing a polymer, wherein the process comprises: providing a reaction mixture comprising a portion of at least one polar monomer and at least one multivalent cation; adding the remaining portion of the polar monomer to the reaction mixture; and polymerizing the monomer to form the polymer. In certain embodiments, the reaction mixture in the providing step comprises at least two molar equivalents or greater of the total amount of polar monomer with respect to one molar equivalent of multivalent cation.Type: GrantFiled: September 17, 2003Date of Patent: November 16, 2004Assignee: Rohm and Haas CompanyInventor: Robert Victor Slone
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Patent number: 6812313Abstract: A polymer comprises polymer chains having a glass transition temperature of less than 25° C. and a weight average molecular weight of less than 20,000 wherein the polymer chains contain at least one non-functional aromatic end-group. The polymer is miscible in the uncured state of said thermoset resins and immiscible in the cured state of the thermoset resins.Type: GrantFiled: June 18, 2002Date of Patent: November 2, 2004Assignee: Rohm and Haas CompanyInventor: Edward Ewart La Fleur
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Patent number: 6812302Abstract: A process for preparing a liquid rubber composition comprises: (a) Forming a reaction mixture of (i) from 1.0 to 99.999 weight percent of the reaction mixture of at least one C1-C20 alkyl acrylate monomer; and (ii) from 0.001 to 20 weight percent of the reaction mixture of at least one aromatic-containing initiator; (b) charging the reaction mixture into a reactor maintained at a reaction temperature of up to 400° C.; and (c) polymerizing said monomer with said aromatic-containing initiator to form a liquid rubber with polymer chains having at least one non-functional aromatic end-group.Type: GrantFiled: June 18, 2002Date of Patent: November 2, 2004Assignee: Rohm and Haas CompanyInventor: Edward Ewart La Fleur
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Patent number: 6780953Abstract: The present invention provides a polymer that can be used as an anti-reflective coating (ARC) polymer, an ARC composition comprising the same, methods for producing the same, and methods for using the same. The polymer of the present invention is particularly useful in a submicrolithographic process, for example, using KrF (248 nm) or ArF (193 nm) lasers as a light source. The polymer of the present invention comprises a chromophore that is capable of absorbing light at the wavelengths used in a submicrolithographic process. Thus, the ARC of the present invention significantly reduces or prevents back reflection of light and the problem of the CD alteration caused by the diffracted and/or reflected light. The ARC of the present invention also significantly reduces or eliminates the standing wave effect and reflective notching.Type: GrantFiled: November 12, 2002Date of Patent: August 24, 2004Assignee: Hyundai Electronics Industries Co., Ltd.Inventors: Min-Ho Jung, Sung-Eun Hong, Ki-Ho Baik
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Patent number: 6777513Abstract: The invention concerns a method for preparing polymers, which consists in contacting: an ethylenically unsaturated monomer; a soure of free radicals; and a halogenated xanthate.Type: GrantFiled: April 8, 2002Date of Patent: August 17, 2004Assignee: Rhodia ChimieInventors: Mathias Destarac, Dominique Charmot, Samir Zard, Xavier Franck
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Publication number: 20040157021Abstract: A curable casemaking adhesive, books and related articles bound thereby. In one embodiment, a UV curable hot melt adhesive is used to form the case, which is preferably also embossed. In another embodiment, a moisture curable hot melt adhesive is used to form the case, which is preferably also embossed.Type: ApplicationFiled: February 9, 2004Publication date: August 12, 2004Inventors: Robert C. Schmidt, Michael T. Gefri, James W. Nowicki
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Patent number: 6770413Abstract: The present invention relates to new copolymers and use of such copolymer as a resin binder component for photoresist compositions, particularly chemically-amplified positive-acting resists. Polymers of the invention include repeat units of 1) meta-hydroxystyrene groups, 2) para-hydroxystyrene groups, and 3) photoacid-labile groups.Type: GrantFiled: January 12, 1999Date of Patent: August 3, 2004Assignee: Shipley Company, L.L.C.Inventors: Hiroshi Ito, Ashish Pandya, Roger F. Sinta
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Patent number: 6770720Abstract: Disclosed is an organic anti-reflective film composition suitable for use in submicrolithography, comprising a compound of Formula 13 and a compound of Formula 14. The organic anti-reflective film effectively absorbs the light penetrating through the photoresist film coated on top of the anti-reflective film, thereby greatly reducing the standing wave effect. Use of organic anti-reflective films of the present invention allows patterns to be formed in a well-defined, ultrafine configuration, providing a great contribution to the high integration of semiconductor devices. wherein b, c, R′, R″, R1, R2, R3, and R4 are those defined herein.Type: GrantFiled: December 4, 2002Date of Patent: August 3, 2004Assignee: Hyundai Electronics Industries Co., Ltd.Inventors: Jae-chang Jung, Keun-kyu Kong, Min-ho Jung, Sung-eun Hong, Ki-ho Baik
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Patent number: 6762263Abstract: Processes for the controlled radical polymerization of acrylic and related polymers to produce improved low VOC coating materials, or powder coating compositions, the novel polymers so produced, the catalyst systems employed, processes for application of the improved coatings, coatings so produced and objects coated on at least one surface with the novel coatings are disclosed.Type: GrantFiled: February 1, 2002Date of Patent: July 13, 2004Assignee: ATOFINA Chemicals, Inc.Inventors: Peter A. Callais, Puvin Pichai, Michael G. Moskal, Olivier Guerret
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Patent number: 6759490Abstract: The invention provides a process for preparing an aqueous polymer dispersion of a copolymer CP of at least two different monomers M1 and M2 by free-radical aqueous emulsion polymerization of the monomers M in the presence of at least one initiator, at least 80% of the monomers M and at least 75% of the initiator being supplied continuously to the polymerization reaction during its course, which comprises changing the rate at which the initiator is supplied to the polymerization reaction a number of times, or continuously, during the polymerization reaction. The invention further provides the polymer dispersions obtainable by this process, polymer powders prepared therefrom, and for the use of the dispersions and/or of the polymer powders to prepare pressure sensitive adhesives.Type: GrantFiled: February 19, 2002Date of Patent: July 6, 2004Assignee: BASF AktiengesellschaftInventors: Matthias Gerst, Gerhard Auchter, Bernhard Schuler
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Patent number: 6759455Abstract: This invention discloses a resin which is particularly useful in making paraffinic solvent based paints, said resin being comprised of repeat units which are derived from (a) about 5 to about 60 weight percent tertiary-butyl cyclohexyl methacrylate, (b) 0 to about 40 weight percent vinyl aromatic monomers, (c) about 20 to about 80 weight percent alkyl methacrylate monomers, and (d) about 1 to about 30 weight percent alkyl acrylate monomers. These resins exhibit good hardness and excellent resistance to ultraviolet light. More importantly, coatings made with these resins are highly resistant to yellowing and discoloration on exposure to ultra-violet light over long periods of time.Type: GrantFiled: February 13, 2001Date of Patent: July 6, 2004Inventor: Serge Magnet
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Patent number: 6753126Abstract: Disclosed is a polymer for use in a chemically amplified resist, a resist composition including such a polymer is suitable for use in a chemically amplified resist, which is sensitive to KrF or ArF excimer laser and forms a photoresist pattern having low dependence on and good adhesion to substrate, high transparency in the wavelength range of the above radiation, strong resistance to dry etching, and excellencies in sensitivity, resolution and developability. The resist composition can have a stronger etching resistance with a maximized content of unsaturated aliphatic ring in the polymer and a reduced edge roughness of the photoresist pattern with an alkoxyalkyl acrylate monomer employed.Type: GrantFiled: February 11, 2002Date of Patent: June 22, 2004Assignee: Korea Kumho Petrochemical Co., Ltd.Inventors: Joohyeon Park, Dongchul Seo, Jongbum Lee, Hyunpyo Jeon, Seongju Kim
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Patent number: 6747112Abstract: A catalyst system useful to polymerize and co-polymerize polar and non-polar olefin monomers is formed by in situ reduction with a reducing agent of a catalyst precursor comprising {Cp*MRR′n}+{A}− wherein Cp* is a cyclopentadienyl or substituted cyclopentadienyl moiety; M is an early transition metal; R is a C1-C20 hydrocarbyl; R′ are independently selected from hydride, C1-C20 hydrocarbyl, SiR″3, NR″2, OR″, SR″, GeR″3, SnR″3, and C═C-containing groups (R″=C1-C10 hydrocarbyl); n is an integer selected to balance the oxidation state of M; and A is a suitable non-coordinating anionic cocatalyst or precursor. This catalyst system may form stereoregular olefin polymers including syndiotactic polymers of styrene and methylmethacrylate and isotactic copolymers of polar and nonpolar olefin monomers such as methylmethacrylate and styrene.Type: GrantFiled: December 19, 2002Date of Patent: June 8, 2004Assignee: Northwestern UniversityInventors: Tobin J. Marks, Lubin Luo, Sung Cheol Yoon
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Patent number: 6747111Abstract: A free radical polymerization process suitable for synthesizingpolymers is disclosed. The process utilizes novel sulfur based chain transfer agents and is widely compatible over a range of monomers and reaction conditions. Novel polymers having low pollydispersity and predictable specific polymer architecture and molecular weight are produced by the process. The polymers produced by the process are suitable for use as binders in automotive OEM and refinish coatings.Type: GrantFiled: July 18, 2003Date of Patent: June 8, 2004Assignees: E. I. du Pont de Nemours and Company, Commonwealth Scientific and Industrial Research OrganizationInventors: John Chiefari, Roshan Tyrrel Mayadunne, Graeme Moad, Ezio Rizzardo, San Hoa Thang
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Patent number: 6743880Abstract: The present invention provides a method for the preparation of hydrophilic water insoluble, gel-free copolymers of 2-hydroxyethyl methacrylate and at least one of acrylic acid or methacrylic acid, and 2-hydroxyethyl methacrylate, 4-hydroxybutyl acrylate and acrylic or methacrylic acid, where the copolymers are prepared in a solution of water and alcohol using monomeric 2-hydroxyethyl methacrylate containing ethylene glycol dimethacrylate impurities up to about 0.15% by weight and substantially in the absence of a chain transfer agent. The copolymers are convertible to water soluble copolymers by pH adjustment. The invention also provides a method for the preparation of a copolymer of 2-hydroxyethyl methacrylate and 4-hydroxybutyl acrylate, and a homopolymer of 2-hydroxyethyl methacrylate in a solution of water and either a monoalcohol or a polyhydric alcohol.Type: GrantFiled: April 26, 2002Date of Patent: June 1, 2004Assignee: Avery Denison CorporationInventor: Daniel L. Holguin
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Patent number: 6740723Abstract: This invention relates to a process for the synthesis of addition polymers containing branches upon branches and having a polymerizable olefin end group by a convenient one-pot polymerization of selected vinyl monomers with chain polymerization initiators and a method to provide olefinic end groups by chain termination agents; and polymers produced thereby characterized by branch-on-branch structure and lower inherent viscosity than heretofore possible.Type: GrantFiled: December 11, 2002Date of Patent: May 25, 2004Assignee: E. I. du Pont de Nemours and CompanyInventor: Lech Wilczek
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Publication number: 20040091729Abstract: The present invention provides pressure-sensitive adhesives having a refractive index of at least 1.48. The pressure-sensitive adhesives comprise at least one monomer containing a substituted or an unsubstituted aromatic moiety.Type: ApplicationFiled: November 4, 2003Publication date: May 13, 2004Applicant: 3M Innovative Properties CompanyInventors: David B. Olson, Bettie C. Fong, Ying-Yuh Lu, Cheryl L. Moore, Todd R. Williams
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Patent number: 6723813Abstract: The present invention is a method of preparing an acrylic copolymer having an acid anhydride group with a number average molecular weight of 1,500-5,000 comprising; polymerizing a monomer mixture of a radical polymerizable monomer having an acid anhydride group and another radical polymerizable monomer at a temperature of 150° C. or higher by using a radical initiator, wherein the concentration of the monomer mixture is 50-75 wt %. This method can provide an acrylic copolymer having an acid anhydride group with a relatively low molecular weight that does not cause the problem of yellowing after baking when used in an acid/epoxy curing type clear paint, by means of high temperature polymerization without the use of a large amount of an expensive initiator.Type: GrantFiled: June 17, 2003Date of Patent: April 20, 2004Assignee: Nippon Paint Company, Ltd.Inventors: Tomohito Asai, Shinya Yamada, Yusuke Ninomiya
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Patent number: 6720398Abstract: The invention relates to a polymerization process wherein at least one initiator is selected from trioxepan compounds of formula I with R1-3 being independently selected from substituted or unsubstituted hydrocarbyl groups.Type: GrantFiled: August 15, 2001Date of Patent: April 13, 2004Assignee: Akzo Nobel N.V.Inventors: Andreas H. Hogt, John Meijer
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Patent number: 6716951Abstract: A process for production of methacrylic copolymers, characterized by charging a monomer mixture comprising from 70 to 95% by weight of methyl methacrylate, from 0 to 15% by weight of &agr;-methylstyrene, from 0 to 20% by weight of styrene and from 2 to 15% by weight of maleic anhydride at a molar ratio of the sum of &agr;-methylstyrene and styrene to maleic anhydride laying within the range of 1.0 to 2.5 into a polymerizing vessel containing at least one polymeric membrane layer having an oxygen permeability of 1.5×10−13 (mol·m−2·s−1·Pa−1) or below, sealing the polymerizing vessel, and polymerizing the monomer mixture under heating in a gas phase; a methacrylic copolymer obtained by the production process which is reduced yellowing and shows excellent transparency and heat resistance; and an optical element composed of the methacrylic copolymer.Type: GrantFiled: July 22, 2002Date of Patent: April 6, 2004Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Takao Marutani, Hiroki Hatakeyama, Yoshiko Sano
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Patent number: 6713583Abstract: Ophthalmic lenses, such as intraocular lenses, include cross-linked polymeric materials having a first constituent derived from a first monomeric component selected from the group consisting of acrylates, methacrylates and mixtures thereof, and a second constituent derived from a second component in an amount effective as a cross linker in the cross-linked polymeric material. The cross-linked polymeric material has branched chain alkyl groups, preferably included with at least a portion of the first monomeric component, in an amount effective to reduce the tackiness of the cross-linked polymeric material relative to a substantially identical cross-linked polymeric material without the branched chain alkyl groups.Type: GrantFiled: February 23, 2001Date of Patent: March 30, 2004Assignee: Advanced Medical Optics, Inc.Inventors: Xiugao Liao, Joseph I. Weinschenk, III
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Patent number: 6710150Abstract: The present invention provides a protolytically leaving group-containing copolymer having improved characteristics such as increased solubility in alkaline aqueous solution in the presence of a proton, thus finding application with advantage in various uses, and a process for producing the copolymer. A protolytically leaving group-containing copolymer represented by the following general formula (1): in the formula, R1, R2 and R3 are the same or different and each represents a protolytically leaving group and a, b and c represent the amounts of existence (mole %) of repeating units (A), (B) and (C), respectively, in the copolymer, which comprises the repeating unit (A) as well as the repeating unit (B) and/or the repeating unit (C) and has a weight average molecular weight of 2000˜30000, said a, b and c satisfying the condition that a is 5 to 30 mole % and (b+c) is 70 to 95 mole %.Type: GrantFiled: November 29, 2001Date of Patent: March 23, 2004Assignee: Nippon Shokubai Co., Ltd.Inventors: Masatoshi Yoshida, Shigeru Tanimori, Yasutaka Nakatani, Yohei Murakami, Hideaki Nagano
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Patent number: 6710146Abstract: The present invention relates to a polymerizable composition comprising a) at least one ethylenically unsaturated monomer and b1) at least one multifunctional triazinyl based 2,2,6,6 tetramethylpiperidine-1-oxyl and a free radical initiator or b2) at least one multifunctional triazinyl based 2,2,6,6 tetramethylpiperidine-1-oxyl-ether. Further aspects of the present invention are a process for polymerizing ethylenically unsaturated monomers, the (co)polymers obtainable by this process and the use of multifunctional triazinyl based 2,2,6,6 tetramethylpiperidine-1-oxyls in combination with a free radical initiator, or a multi-functional triazinyl based 2,2,6,6 tetramethylpiperidine-1-oxyl-ethers for controlled polymerization. In a particularly preferred embodiment at least one additional heating step at a temperature from 140 to 280° C. is applied after polymerization is completed.Type: GrantFiled: April 3, 2003Date of Patent: March 23, 2004Assignee: Ciba Specialty Chemicals CorporationInventors: Wiebke Wunderlich, Rudolf Pfaendner, Raymond Seltzer, James Peter Galbo
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Patent number: 6706836Abstract: A method for the preparation of gel-free poly 2-hydroxyethyl methacrylate substantially in the absence of a chain transfer agent, comprising introducing monomeric 2-hydroxyethyl methacrylate containing ethylene glycol dimethacrylate impurities in the range of about 0.05 to 0.1% by weight into alcohol, polymerizing the 2-hydroxyethyl methacrylate to form a polymerization mixture, and removing the alcohol. Hydrophilic pressure sensitive adhesives are provided by adding polyethylene glycol to the polymerization mixture prior to removing the alcohol.Type: GrantFiled: March 31, 2000Date of Patent: March 16, 2004Assignee: Avery Dennison CorporationInventors: Daniel L. Holguin, H. Paul Barker, Ivan S. P. Lee, Kenneth S. Lin
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Patent number: 6703441Abstract: An oriented pressure sensitively adhesive system comprising a pressure sensitive adhesive which is comprised of at least one block copolymer composed at least in part of (meth)acrylic acid derivatives, and at least one block copolymer comprising the unit P(A)-P(B)-P(A), where P(A) independently of one another represent homopolymer blocks or copolymer blocks of monomers A, the polymer blocks P(A) each having a softening temperature in the range from +20° C. to +175° C., P(B) represents a homopolymer block or copolymer block of monomers B, the polymer block P(B) having a softening temperature in the range from −130° C. to +10° C., wherein the refractive index nMD measured in one direction is greater than the refractive index nCD measured in a direction perpendicular to that direction.Type: GrantFiled: July 24, 2002Date of Patent: March 9, 2004Assignee: tesa AktiengesellschaftInventors: Marc Husemann, Thilo Dollase