Oxygen Atom Is Part Of Carboxylic Acid Group Patents (Class 526/307.6)
-
Patent number: 6849702Abstract: The polymer matrix material includes a polymerization product of one or more monomers selected from the group of water-soluble, ethylenically-unsaturated acids and acid derivatives, and a crosslinking agent. A quantity of water is used for polymerization, such that the polymer material is swelled to a defined volume upon curing. Optionally, a water-soluble or water-swellable polymer and/or a chemical polymerization initiator.Type: GrantFiled: August 30, 2001Date of Patent: February 1, 2005Inventors: Robert W. Callahan, Mark G. Stevens, Muguo Chen
-
Patent number: 6828401Abstract: The present invention relates to novel synthetic methods for PEG-maleimide derivatives, specifically, novel synthetic methods for PEG-maleimide. The final products thereof are useful as a pegylation reagent in the field of bioengineering and the medicinal field or the preparation of medical appliances and by conjugating with certain moieties or specific domains of polysaccharides and biological proteins such as antibodies as a bio-compatible or bio-degradable polymer.Type: GrantFiled: October 29, 2003Date of Patent: December 7, 2004Assignee: SunBio Inc.Inventors: Kwang Nho, Changmin Hyun, Junghun Lee, Youngkyoung Pak
-
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
-
Publication number: 20040225097Abstract: The present invention relates to novel synthetic methods for PEG-maleimide derivatives, specifically, novel synthetic methods for PEG-maleimide. The final products thereof are useful as a pegylation reagent in the field of bioengineering and the medicinal field or the preparation of medical appliances and by conjugating with certain moieties or specific domains of polysaccharides and biological proteins such as antibodies as a bio-compatible or bio-degradable polymer.Type: ApplicationFiled: October 29, 2003Publication date: November 11, 2004Inventors: Kwang Nho, Changmin Hyun, Junghun Lee, Youngkyoung Pak
-
Patent number: 6806337Abstract: Disclosed are soft, high refractive index, acrylic device materials having improved strength. The materials contain cross-linked acrylate or methacrylate microspheres.Type: GrantFiled: July 15, 2003Date of Patent: October 19, 2004Assignee: AlconInventors: Douglas C. Schlueter, Albert R. LeBoeuf, Mutlu Karakelle
-
Patent number: 6765077Abstract: A negative-chargeability control resin containing a specific vinyl copolymer imparts stable chargeability to toner. The vinyl copolymer is obtainable by copolymerizing a monomer composition which contains at least i) a vinyl monomer (A) as exemplified by N-acryloylmorpholine, N-isopropylacrylamide, N-methylmethacrylamide, N-butoxymethylacrylamide or N-t-butylacrylamide, or a vinyl monomer (B) as exemplified by vinyl butyrate, vinyl 2-ethylhexanoate, vinyl benzoate, vinyl monochloroacetate pivarate, and ii) a vinyl monomer (C) having as a functional group a carboxyl group or a carboxyl group made into salt structure.Type: GrantFiled: March 10, 2003Date of Patent: July 20, 2004Assignee: Canon Kabushiki KaishaInventors: Tatsurou Yoshida, Eri Komatsumoto
-
Patent number: 6762269Abstract: A hydrophobe-containing alkali soluble or swellable copolymer thickener comprising an emulsion polymerization product of (A) an ethylenically unsaturated copolymerizable surfactant monomer having a cloud point of from about 65° C. to about 95° C., wherein the surfactant monomer has the formula M(EO)x(BO)zOR1 wherein M is a residue selected from the group consisting of an ethylenically unsaturated carboxylic acid, and an ethylenically unsaturated dicarboxylic acid, EO is an ethylene oxide unit; BO is a butylene oxide unit; x is from 10 to 45; z is from 5 to 35; provided that x+z is from 20 to 45; and R1 is selected from the group consisting of alkyl, alkylene, cycloalkyl, cycloalkylene, and arylalkyl group wherein the alkyl group has 1 to 4 carbon atoms; (B) an &agr;,&bgr;-ethylenically unsaturated monocarboxylic acid monomer; and (C) a nonionic &agr;,&bgr;-ethylenically unsaturated monomer.Type: GrantFiled: August 13, 1998Date of Patent: July 13, 2004Assignee: National Starch and Chemical Investment Holding CorporationInventors: Joseph S. Maxim, Jr., James C. Long, Daniel W. Verstrat
-
Patent number: 6740720Abstract: The invention relates to water-soluble homopolymers and copolymers, which comprise an EbC50 value according to the algae toxicity test of <i> Scenedesmus subspicatus</i> of grater than 10 mg/l. The invention also relates to the production and use of these polymers as flocculation aids or thickeners and as a constituent of a plant protective agent or of an erosion protective agent.Type: GrantFiled: February 24, 2003Date of Patent: May 25, 2004Assignee: Stockhausen GmbH & Co. KGInventors: Richard Mertens, Gregor Herth
-
Patent number: 6737491Abstract: An absorbent binder composition including a monoethylenically unsaturated polymer, such as carboxylic acid, sulphonic acid, or phosphoric acid, or salts thereof, and an acrylate or methacrylate ester that contains an alkoxysilane functionality, or a monomer capable of co-polymerization with a compound containing a trialkoxy silane functional group and subsequent reaction with water to form a silanol group. The absorbent binder composition is particularly suitable for use in manufacturing absorbent articles. A method of making the absorbent binder composition includes preparing a monomer solution, adding the monomer solution to an initiator solution, and activating a polymerization initiator within the initiator solution.Type: GrantFiled: July 26, 2002Date of Patent: May 18, 2004Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Dave Allen Soerens, Jason Matthew Laumer, Kambiz Bayat Makoui
-
Patent number: 6727309Abstract: One aspect of the present invention provides an aqueous surface finish composition comprising a film-forming, reversibly crosslinked, emulsion-based polymer composition, and a surface modified inorganic particle material. The surface modified inorganic particle material is dispersed within the emulsion-based polymer composition, and enhances performance characteristics of a resultant film including hardness, modulus, as well as scratch and soil resistance. The floor finish composition is shelf stable and is particularly well suited for application to floor surfaces, but also to other substrate surfaces such as walls and bathroom surfaces.Type: GrantFiled: October 8, 2002Date of Patent: April 27, 2004Assignee: 3M Innovative Properties CompanyInventors: Adriana Paiva, Brant U. Kolb, Susan K. Yarmey
-
Patent number: 6723815Abstract: Covalently-bound, hydrophilic copolymer coatings for implants are disclosed. The copolymer coatings comprise a hydrophobic aryl acrylic monomer, a hydrophilic monomer selected from the group consisting of hydroxyalkyl (meth)acrylates, n-vinyl pyrrolidone and acrylamides, and a reactive plasticizer.Type: GrantFiled: May 13, 2003Date of Patent: April 20, 2004Assignee: Alcon, Inc.Inventors: Thomas A. Callaghan, Albert R. Leboeuf
-
Patent number: 6703468Abstract: A composition comprising a polymer containing a compound represented by Formula (1) or a salt thereof as a constituent monomer, or a polymer containing a structure represented by Formula (9) as a partial structure is used for protecting or improving skin. In the formula, R1, R2 and R3 each independently represent hydrogen atom, an alkyl group, an alkoxyl group, or an alkylamino group; R4 represents an amino acid residue, a polyamine residue, or an aminoalcohol residue; and X represents oxygen atom or a group represented as NH. In the formula, R1, R2 and R3 each independently represent hydrogen atom, an alkyl group, an alkoxyl group, or an alkylamino group; R4 represents an amino acid residue, a polyamine residue, or an aminoalcohol residue; and X represents oxygen atom or a group represented as NH.Type: GrantFiled: August 20, 2001Date of Patent: March 9, 2004Assignee: Pola Chemical Industries Inc.Inventors: Michi Otiai, Takao Hattori, Yoshio Kitada, Hideo Kuroda, Midori Oyobikawa, Satoshi Ichinomiya
-
Patent number: 6664356Abstract: This invention relates to a non-leachable, oil based carrier derived from the anhydrous free radical solution polymerization of a water insoluble acrylate and/or acrylamide monomer in an oil medium for use in long lasting skin lubricating formulations.Type: GrantFiled: January 23, 2003Date of Patent: December 16, 2003Assignee: ISP Investments Inc.Inventor: Jenn S. Shih
-
Patent number: 6646086Abstract: 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, 2001Date of Patent: November 11, 2003Assignee: Rohm and Haas CompanyInventor: Robert Victor Slone
-
Publication number: 20030208019Abstract: A composition for plastic lenses having a viscosity suitable for application to plastic lens materials and other optical materials and capable of giving a cured material having a relatively high refractive index and a low specific gravity, a plastic lens obtained by curing the composition, and a process for producing the plastic lens. A specific dicarboxylic acid component and a specific diol component are employed and the ratio of the components is adjusted to provide the composition for plastic lenses.Type: ApplicationFiled: March 14, 2002Publication date: November 6, 2003Inventors: Kazuhiko Ooga, Tsuneo Tajima, Kai Kazufumi, Hiroshi Uchida
-
Patent number: 6632905Abstract: Covalently-bound, hydrophilic copolymer coatings for implants are disclosed. The copolymer coatings comprise 2-phenylethyl (meth)acrylate, a hydrophilic monomer selected from the group consisting of hydroxyalkyl (meth)acrylates and acrylamides, and a reactive plasticizer.Type: GrantFiled: December 20, 2001Date of Patent: October 14, 2003Assignee: Alcon Universal Ltd.Inventor: Albert R. Leboeuf
-
Patent number: 6610412Abstract: A printing fluid composition with an additive which functions as a compatibilizer between the hydrophilic material coating a media surface and the hydrophobic thermal transfer overcoat (TTO) material used in a clear protective TTO overcoat and a method of using such an printing fluid composition to promote adhesion of such TTO material and a digitally printed medium.Type: GrantFiled: September 30, 2002Date of Patent: August 26, 2003Assignee: Hewlett-Packard Development Company, L.P.Inventor: Gary Allan Ungefug
-
Patent number: 6586534Abstract: Agglomerated polymer particles of finely divided, water-soluble or water-swellable polymers containing ammonium carboxylate groups are prepared by azeotropic removal of water from water-in-oil emulsions of the water-soluble or water-swellable polymers which contain ammonium carboxylate groups in the presence of from 0.1 to 40% by weight, based on the polymers, of polyalkylene glycols which have an agglomerating effect and which are obtainable by an addition reaction of C2-C4-alkylene oxides with alcohols, phenols, amines or carboxylic acids and contain at least two polymerized alkylene oxide units and additionally of from 0.1 to 20% by weight, based on the polymers, of protective colloids which are obtainable by free radical copolymerization of C8-C40-monoolefins with monoethylenically unsaturated C4-C6-dicarboxylic anhydrides by a mass polymerization method at from 80 to 300° C.Type: GrantFiled: April 4, 1997Date of Patent: July 1, 2003Assignee: BASF AktiengesellschaftInventors: Martin Rübenacker, Reinhard Schneider, Jürgen Nieberle, Heinrich Hartmann, Walter Denzinger, Axel Kistenmacher
-
Patent number: 6573348Abstract: A curable resin composition containing (A) an aromatic diallyl compound, (B) an acid derivative or an aliphatic group-containing compound having at least 4 (meth)acryl groups in one molecule, (C) divinylbenzene, and (D) a polythiol compound having at least two mercapto groups in one molecule provides an optical material having a desirable refractive index, Abbe number and transparency, and excellent heat resistance.Type: GrantFiled: April 11, 2001Date of Patent: June 3, 2003Assignee: Daiso Co. LTDInventors: Katsutoshi Yokoyama, Kazuya Tsujimura
-
Patent number: 6566472Abstract: Binder formulations based on aqueous polymer dispersions having a minimum film-forming temperature of below 10° C. and comprising at least one binder polymer P in the form of an aqueous dispersion comprising at least one anionic emulsifier and at least one nonionic emulsifier.Type: GrantFiled: August 17, 2000Date of Patent: May 20, 2003Assignee: BASF AktiengesellschaftInventors: Roland Baumstark, Stefan Kirsch, Rolf Dersch, Johannes Dobbelaar, Michael Melan
-
Publication number: 20030073797Abstract: Agglomerated polymer particles of finely divided, water-soluble or water-swellable polymers containing ammonium carboxylate groups are prepared by azeotropic removal of water from water-in-oil emulsions of the water-soluble or water-swellable polymers which contain ammonium carboxylate groups in the presence of from 0:1 to 40% by weight, based on the polymers, of polyalkylene glycols which have an agglomerating effect and which are obtainable by an addition reaction of C2-C4-alkylene-oxides with alcohols, phenols, amines or carboxylic acids and contain at least two polymerized alkylene oxide units and additionally of from 0.1 to 20% by weight, based on the polymers, of protective colloids which are obtainable by free radical copolymerization of C8-C40-monoolefins with monoethylenically unsaturated C4-C6-dicarboxylic anhydrides by a mass polymerization method at from 80 to 300° C.Type: ApplicationFiled: September 19, 2002Publication date: April 17, 2003Applicant: BASF AkiengesellschaftInventors: Martin Rubenacker, Reinhard Schneider, Jurgen Nieberle, Heinrich Hartmann, Walter Denzinger, Axel Kistenmacher
-
Patent number: 6531561Abstract: Linear, branched or crosslinked polymer, capable of being obtained by polymerization of N-alkylacrylamide, in which the alkyl radical is linear or branched and comprises from 1 to 6 carbon atoms, with one or more monomers chosen from cationic monomers, monomers comprising at least one partially salified or completely salified strong acid functional group or monomers comprising at least one partially salified or completely salified weak acid functional group. A method of preparing the polymer is also disclosed.Type: GrantFiled: December 28, 2000Date of Patent: March 11, 2003Assignee: Societe d'Exploitation de Produits pour les Industries Chimiques SeppicInventors: Francoise Candau, Joseph Selb, Paul Mallo, Olivier Braun
-
Patent number: 6531564Abstract: A water-soluble polymeric adhesion promoter is represented by the following formula (I): wherein R is a hydrogen atom, a hydroxyl group or a lower alkyl group having 1 to 4 carbon atoms, and m and k are numbers selected such that m/k is in the range from about 1/0.001 to about 1/0.1, and such that that the polymer (I) has a weight average molecular weight of about 3,000 to about 600,000.Type: GrantFiled: June 28, 2002Date of Patent: March 11, 2003Assignee: Samsung Electronics Co., Ltd.Inventors: Se Yong Oh, Chan Eon Park, Sang Min Song
-
Patent number: 6521730Abstract: 1) Hydrophilic fluoropolymers obtained by radical polymerization, in a precipitating medium, of a mixture of monomers composed of at least one monomer with a perfluoroalkyl side chain, of one or more ionic or ionizable hydrophilic monomer(s) and optionally of one or more nonionic hydrophilic monomer(s). 2) Use of these polymers as dispersants or thickeners and as additives in multipurpose fire-fighting emulsifiers.Type: GrantFiled: January 23, 2001Date of Patent: February 18, 2003Assignee: E.I. du Pont de Nemours and CompanyInventors: Martial Pabon, Elisabeth Morillon, Jean-Marc Corpart
-
Publication number: 20020188084Abstract: A stimuli-responsive polymer derivative utilizing keto-enol tautomerization. Also disclosed are a simple process for producing an N-acyl(meth)acrylamide derivative which can be used as a monomer for the stimuli-responsive polymer, a process for the production of an intermediate thereof, and an intermediate thus produced.Type: ApplicationFiled: June 25, 2002Publication date: December 12, 2002Inventors: Noriyuki Ohnishi, Kazumi Aoshima, Kazunori Kataoka, Katsuhiko Ueno
-
Patent number: 6489422Abstract: Use of neutralized or partially neutralized copolymers obtainable from A) from 50 to 99% by weight of monoethylenically unsaturated carboxylic acid and B) from 1 to 50% by weight of at least one comonomer chosen from the groups a) to d) or also mixtures of different monomers from groups a) to d) a) monoethylenically unsaturated carboxylic acid esters with a saturated C8- to C30-alcohol b) N-alkyl- or N,N-dialkyl-substituted carboxamides, the alkyl radicals independently of one another being aliphatic or cycloaliphatic alkyl radicals having at least 8 to 18 carbon atoms, c) vinyl esters of aliphatic C8- to C30-carboxylic acids, d) C8- to C18-alkyl vinyl ethers, for the preparation of hair cleansers.Type: GrantFiled: March 14, 2002Date of Patent: December 3, 2002Assignee: BASF AktiengesellschaftInventors: Helmut Meffert, Kristin Tiefensee
-
Patent number: 6455654Abstract: A water-soluble polymeric adhesion promoter is represented by the following formula (I): wherein R is a hydrogen atom, a hydroxyl group or a lower alkyl group having 1 to 4 carbon atoms, and m and k are numbers selected such that m/k is in the range from about 1/0.001 to about 1/0.1, and such that that the polymer (I) has a weight average molecular weight of about 3,000 to about 600,000.Type: GrantFiled: January 18, 2001Date of Patent: September 24, 2002Assignee: Samsung Electronics Co., Ltd.Inventors: Se Yong Oh, Chan Eon Park, Sang Min Song
-
Patent number: 6420487Abstract: The present invention relates to a process for the preparation, of thermoprecipitating affinity polymers useful in the enhanced recovery of enzymes. The process comprises polymerising a monomer comprising a spacer and a co-monomer with a polymerisation initiator and a polymerisation accelerator at ambient temperature and pressure for a period ranging between 2 to 24 hours to obtain a polymer and then linking an inhibitor to pendant carboxyl groups of the spacers in the polymer to obtain an affinity polymer.Type: GrantFiled: March 6, 2000Date of Patent: July 16, 2002Assignee: Council of Scientific and Industrial ResearchInventors: Alankar Arun Vaidya, Bhalchandra Shripad Lele, Mohan Gopalkrishna Kulkarni, Raghunath Anant Mashelkar
-
Patent number: 6391937Abstract: The present invention provides polyacrylamide hydrogels (especially polyacrylamide hydrogel arrays) made from prepolymers and polyacrylamide reactive polymers, as well as methods and compositions for preparing the polyacrylamide hydrogels or hydrogel arrays. The method advantageously provides greater control of polyacrylamide pore size and crosslink density, allowing, for instance, preparation of a polyacrylamide hydrogel appropriate for use with DNA. Furthermore, the methods and compositions can be employed in commercial processes.Type: GrantFiled: June 25, 1999Date of Patent: May 21, 2002Assignee: Motorola, Inc.Inventors: Allyson Beuhler, John McGowen
-
Publication number: 20020035167Abstract: The present invention provides polyacrylamide hydrogels (especially polyacrylamide hydrogel arrays) made from prepolymers and polyacrylamide reactive polymers, as well as methods and compositions for preparing the polyacrylamide hydrogels or hydrogel arrays. The method advantageously provides greater control of polyacrylamide pore size and crosslink density, allowing, for instance, preparation of a polyacrylamide hydrogel appropriate for use with DNA. Furthermore, the methods and compositions can be employed in commercial processes.Type: ApplicationFiled: June 25, 1999Publication date: March 21, 2002Inventors: ALLYSON BEUHLER, JOHN MCGOWEN
-
Publication number: 20020035222Abstract: A water-soluble polymeric adhesion promoter is represented by the following formula (I): 1Type: ApplicationFiled: January 18, 2001Publication date: March 21, 2002Inventors: Se Yong Oh, Chan Eon Park, Sang Min Song
-
Patent number: 6359093Abstract: An amphipathic compound represented by any of the following Formulas: (R1 is a linear or branched, saturated hydrocarbon group having 6 to 48 carbon atoms, or a linear or branched, unsaturated hydrocarbon group containing 1 to 12 unsaturated double bond and having 6 to 48 carbon atoms; Y is NH, N—(CH2—CH═CH2), or O; Q is —CH2—C(R2)═CH2 or —R4—O—CO—C(R2)═CH2; and M is alkali metal, an ammonium group, or —(CH2CH2O)mH), a copolymer of the amphipatic compound with a copolymerizable ethylenically unsaturated compound and, a paper making additive containing a water soluble or dispersible high molecular compound as an active ingredient and processes for producing these high molecular compounds.Type: GrantFiled: February 16, 2000Date of Patent: March 19, 2002Assignee: Mitsui Chemicals, Inc.Inventors: Toshihiko Takaki, Masaru Tanabe, Shoko Oyanagi
-
Patent number: 6313245Abstract: Acrylates having a high degree of halogenation, as well as polymers that include one or more mer units derived from such acrylates provide materials having tailorable optical and physical properties. The polymers find utility particularly in optical devices including optical waveguides and interconnecting devices.Type: GrantFiled: August 23, 1999Date of Patent: November 6, 2001Assignee: 3M Innovative Properties CompanyInventors: George G. I. Moore, Fred B. McCormick, Mita Chattoraj, Elisa M. Cross, Junkang Jacob Liu, Ralph R. Roberts, Jay F. Schulz
-
Patent number: 6265477Abstract: An aqueous dispersion of a particulate high molecular weight water soluble anionic or nonionic polymer is prepared by polymerizing 0-7 mole percent of at least one anionic monomer and 100-93 mole percent of at least one non-ionic monomer under free radical forming conditions in an aqueous solution of a water-soluble salt at a pH greater than 5 in the presence of an anionic water soluble stabilizer polymer containing from about 1.25 to about 20 mole percent 2-acrylamido-2-methyl-l-propanesulfonic acid.Type: GrantFiled: September 8, 1999Date of Patent: July 24, 2001Assignee: Nalco Chemical CompanyInventor: John R. Hurlock
-
Patent number: 6207778Abstract: What is described herein are conditioning/styling terpolymers of vinylpyrrolidone (VP), dimethylaminopropyl methacrylamide (DMAPMA) and C9-C24 alkyl dimethylaminopropyl methacrylic acid quaternized monomers (QDMAPMA), in a defined compositional range. Hair and skin care compositions which include these terpolymers exhibit advantageous low tackiness and high humidity resistance.Type: GrantFiled: May 7, 1999Date of Patent: March 27, 2001Assignee: ISP Investments Inc.Inventors: Janusz Jachowicz, Kou-Chang Liu, Roger L. Mc Mullen, Jr., Thomas Winkler
-
Patent number: 6180705Abstract: The invention concerns a polyacrylamide-containing composition which is characterized in that it has a molecular weight of between 2,000 and 8,000 g/mol, determined by means of gel permeation chromatography (GPC), and as a 15% aqueous solution still has a Brookfield viscosity of between 100 and 500 mPas at 25° C. The invention further concerns the use of this polyacrylamide-containing composition for the flat bonding of water absorbent and hard surfaces and for equipping plastic surfaces with non-slip protection.Type: GrantFiled: February 13, 1998Date of Patent: January 30, 2001Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Norbert Huebner, Wolf-Ruediger Mueller, Bernd Willi Peters, Ludwig Schieferstein
-
Patent number: 6174963Abstract: Provided is a method for producing an amphoteric resin which comprises reacting (1) a copolymerizable basic prepolymer A2 which is obtained by reacting a prepolymer A1 being obtained by polymerization of an amino group-containing &agr;, &bgr;-ethylenically polymerizable compound, other &agr;, &bgr;-ethylenically polymerizable compound and a polymerization initiator containing a carboxyl group at an end, with a compound having an epoxy group represented by the following formula (I): (wherein R1 represents H or a methyl group, and R represents a straight or branched chain alkyl group of 1-10 carbon atoms) in an amount of 0.1-1.0 equivalent for the amino group equivalent of the prepolymer A1 and (2) an &agr;, &bgr;-ethylenically polymerizable acidic prepolymer B2 which is obtained by carrying out the reaction in the same manner as above with (3) other &agr;, &bgr;-ethylenically polymerizable compound C.Type: GrantFiled: July 14, 1999Date of Patent: January 16, 2001Assignee: Taisei Chemical Industries, Ltd.Inventors: Mitsuo Tamazawa, Yasuo Kuroda