Oxygen Atom Is Part Of A Carboxylic Acid Ester Group Patents (Class 525/302)
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Patent number: 5328952Abstract: Multi-stage polymer process and composition having an alkali-insoluble emulsion polymer and an alkali-soluble polymer are produced by a two-stage sequential emulsion polymerization process. When the multi-stage polymers of this invention are utilized as cement modifiers, improvements in cement mortar physical properties are realized.Type: GrantFiled: February 14, 1992Date of Patent: July 12, 1994Assignee: Rohm and Haas CompanyInventors: John G. Brodnyan, Shang-Jaw Chiou, Mark P. de Grandpre
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Patent number: 5328947Abstract: A two-part adhesive consisting of a first liquid comprising 100 parts by weight of a polymerizable vinyl monomer and from 0.1 to 20 parts by weight of an organic peroxide and a second liquid comprising 100 parts by weight of a polymerizable vinyl monomer and from 0.05 to 15 parts by weight of a reducing agent, wherein either one or both of the first and second liquids contain from 0.4 to 5% by weight of water, and the content of water is more than 0.2% by weight based on the total amount of the first and second liquids.Type: GrantFiled: December 23, 1992Date of Patent: July 12, 1994Assignee: Denki Kagaku Kogyo Kabushiki KaishaInventors: Koichi Taguchi, Kinpei Iwata, Hideki Matsudo
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Patent number: 5326823Abstract: A fluorochemical graft copolymer comprising: a base polymer comprising polymerized units derived from monomers having terminal olefinic double bonds, having grafted thereto a plurality of polyfluoropolyether groups, Also disclosed is a process for preparing such a graft copolymer, and a method for reducing the surface energy of a polymer comprising polymerized units derived from monomers having terminal olefinic double bonds.Type: GrantFiled: June 23, 1993Date of Patent: July 5, 1994Assignee: Minnesota Mining and Manufacturing CompanyInventors: Richard J. Rolando, Anthony B. Clinch
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Patent number: 5324786Abstract: The invention provides a method for the production of a solid phase system of the formula F--(--R.sup.3 --Y--CO--CR.sup.2 .dbd.CR.sup.1 --CH.sub.2 --X).sub.m using new allyl esters of the formula:X--CH.sub.2 --CR.sup.1 .dbd.CR.sup.2 --CO--Y--R.sup.3 --A (I).R.sup.1 and R.sup.2 are hydrogen, halogen, alkyl or aryl, R.sup.3 is a spacer, X is acyloxy where acyl is the residue of an aliphatic carboxylic acid or is RCO-- in which R is an organic group. Y is oxygen or sulphur or an --NH-- group and A is a grouping which can react with a solid carrier material F, which contains functional groups B. A and B are groups which react with one another with condensation and/or addition and formation of a linkage between the solid carrier material and X--CH.sub.2 --CR.sup.1 .dbd.CR.sup.2 --CO--Y--R.sup.3 --.Type: GrantFiled: May 3, 1991Date of Patent: June 28, 1994Assignee: Orpegen Medizinische-Molekular Biologische Forschungsgesellschaft mbhInventors: Horst Kunz, Winfried Kosch, Joachim Marz
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Patent number: 5321080Abstract: A resin composition comprising an olefin resin (A), a copolymer of olefin with non-conjugated diene (B) and at least one polymer (C) selected from the group consisting of the following polymers;C1: diene polymer containing a hydroxyl group or the hydrogenation product thereof,C2: polymer containing a hydroxyl group,C3: polymer containing a carboxyl group (including an acid anhydride group),C4: polymer containing an amino group and/or imino group, andC5: polymer containing an epoxy group; and optionally an elastomer (D), filler (E) and at least one compound (F) selected from the group consisting of the following compounds;F1: organotin compound,F2: tertiary amine compound, andF3: phosphorus oxy compound.The moldings prepared from this resin composition have remarkable adhesive properties for paints, adhesives and printing inks. Thus, paints, etc. may be applied directly to the moldings, without surface treatment or washing thereof.Type: GrantFiled: July 29, 1992Date of Patent: June 14, 1994Assignee: Mitsubishi Petrochemical Company, Ltd.Inventors: Yuta Kumano, Sadao Kitagawa, Mitsushige Baba, Shiroh Gotoh
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Patent number: 5319028Abstract: A polyvinyl chloride plastisol composition is provided, which contains as essential components (A) polyvinyl chloride resin particles prepared by microsuspension polymerization of vinyl chloride in the presence of a polymethyl methacrylate resin soluble in vinyl chloride and having polymethyl methacrylate resin localized on the surfaces of the resin particles, and (B) a plasticizer, and which has excellent thermal stability and stability with time of viscosity. The composition can be used advantageously as a material for use in processing procedures in which heat accumulates in plastisol being retained, for example, in slush processing, dip processing, etc. or for use in coating processing in which adhesiveness is required.Type: GrantFiled: December 13, 1991Date of Patent: June 7, 1994Assignee: Nippon Zeon Co., Ltd.Inventors: Eitaro Nakamura, Kazunori Ueki
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Patent number: 5314963Abstract: Graft Polymers of a cross-linked copolymer of compounds of formula (I) or (II) ##STR1## and another vinyl compound as graft basis, and a polymerized vinyl group-containing phosphonic acid derivative as graft.Type: GrantFiled: November 2, 1993Date of Patent: May 24, 1994Assignee: Bayer AktiengesellschaftInventors: Christian Lindner, Dieter Wittmann
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Patent number: 5314977Abstract: This invention relates to a two stage aqueous emulsion polymerization process for making graft copolymers. In the first stage, at least one first ethylenically unsaturated monomer is polymerized in the presence of at least one mercapto-olefin compound to form a macromonomer with terminal functional groups. In the second stage, at least one second ethylenically unsaturated monomer is polymerized in the presence of the macromonomer such that a copolymer is formed with a backbone of polymerized units of the at least one second ethylenically unsaturated monomer and side chains of the macromonomer.Type: GrantFiled: June 3, 1993Date of Patent: May 24, 1994Assignee: Rohm and Haas CompanyInventors: David R. Amick, William D. Emmons, Dennis P. Lorah
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Patent number: 5314966Abstract: The present invention is directed to a process for the preparation of a finely divided vinyl chloride graft copolymer and to the use of this product as a viscosity-reducing agent for plastisols.Type: GrantFiled: March 17, 1993Date of Patent: May 24, 1994Assignee: Wacker Chemie GmbHInventors: Peter Grauer, Ludwig Ober
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Patent number: 5314959Abstract: A fluorochemical graft copolymer comprising: a base polymer comprising polymerized units derived from monomers having terminal olefinic double bonds, having a moiety comprising a fluoroaliphatic group grafted thereto. Also disclosed are processes for preparing such fluorochemical graft copolymers, forming and annealing methods for enhancing the surface activity of such a graft copolymer, polymer blends comprising such a fluorochemical graft copolymer and a matrix polymer that is miscible with the base polymer, and a method for reducing the surface energy of a polymer comprising polymerized units derived from monomers having terminal olefinic double bonds.Type: GrantFiled: March 6, 1991Date of Patent: May 24, 1994Assignee: Minnesota Mining and Manufacturing CompanyInventors: Richard J. Rolando, James E. Sax
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Patent number: 5312871Abstract: This invention concerns a "living" free radical polymerization process for preparing polymers having a narrow distribution of molecular weights.Type: GrantFiled: July 27, 1993Date of Patent: May 17, 1994Assignee: Carnegie Mellon UniversityInventors: Daniela Mardare, Krzysztof A. Matyjaszewski
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Patent number: 5312872Abstract: A method for preparing a polyolefine-vinyl composite, in which method about 10-200 weight fractions of vinyl monomer and about 0.01-4.0 weight fractions of a free radical polymerization initiator, based on 100 weight fractions of vinyl monomer, are impregnated in 100 weight fractions of polyolefine particles by slowly mixing these at a temperature of about 20.degree.-100.degree. C. while continuously or discontinuously adding about 1-60% by weight of water, based on the total weight of the vinyl monomer and the polyolefine, during the maintenance of the particle structure of the polyolefine, is disclosed. A water suspension is prepared by adding water and stabilizing agents to the above-mentioned mixture after a completed impregnation. The total quantity of water is about 80-1000 weight fractions, based on 100 weight fractions of polyolefine+vinyl monomer. The temperature of the water suspension is then increased for polymerizing the vinyl monomer.Type: GrantFiled: August 6, 1993Date of Patent: May 17, 1994Assignee: Neste OyInventors: Torvald Vestberg, Ismo Lehtiniemi
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Patent number: 5310810Abstract: An improved process for the preparation of segmented copolymers of polyolefins and poly(methacrylates) is disclosed.Type: GrantFiled: March 16, 1993Date of Patent: May 10, 1994Assignee: Rohm and Haas CompanyInventors: John Natoli, Min-Yin Chang
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Patent number: 5310812Abstract: A toner for developing electrostatic latent images with a good combination of fixability, anti-offset characteristic, anti-sticking characteristic and pulverizability contains a composition comprising a colorant or magnetic material and a binder resin. The binder resin has 0.1 to 60 wt. % of a chloroform-insoluble or a THF (tetrahydrofuran)-insoluble component and a THF-soluble component, the THF-soluble providing a molecular weight distribution in the chromatogram of GPC (gel permeation chromatography) thereof such that there is a main peak in the molecular weight range of 1,000 to 25,000 and a sub-peak or shoulder in the molecular weight range of 2,000 to 150,000. The binder resin may suitably be obtained through two polymerization steps including a solution polymerization step and a suspension polymerization step.Type: GrantFiled: December 7, 1992Date of Patent: May 10, 1994Assignee: Canon Kabushiki KaishaInventors: Satoshi Yasuda, Kiichiro Sakashita, Yasuo Mitsuhashi, Seiichi Takagi, Shuichi Aita, Yoshinobu Nagai, Toshiaki Nakahara
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Patent number: 5300397Abstract: A light-sensitive composition comprising a diazonium compound and a polymer binder wherein the polymer binder comprises structural units represented by the following formula (I); ##STR1## wherein X represents a single bond, an ester bond or an amide bond; and Y represents a polymer group comprising structural units represented by the following formula (II); ##STR2## where Z represents ##STR3## R.sup.1 and R.sup.3 represent hydrogen atom or methyl group; R.sup.2 and R represent a single bond or a divalent bridging group; and R.sup.5 and R.sup.6 represent hydrogen atom or optionally substituted hydrocarbon group having 1 to 15 carbon atoms; and R.sup.7 represents an optionally substituted hydrocarbon group having 1 to 15 carbon atoms. The present light-sensitive composition exhibits extremely enhanced sensitivity and hence gives sufficient image formation with a short light exposure time.Type: GrantFiled: June 15, 1992Date of Patent: April 5, 1994Assignee: Fuji Photo Film Co., Ltd.Inventor: Keitaro Aoshima
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Patent number: 5300578Abstract: A method for preparing a polyolefine--vinyl polymer composite, wherein about 10-200 parts by weight of vinyl monomer and about 0.01-4.0 parts by weight of a free radical polymerization initiator, based on 100 parts by weight of vinyl monomer, are impregnated in 100 parts of weight of polyolefine particles by slowly mixing these at a temperature of about 20.degree.-130.degree. C. while maintaining the particle structure of the polyolefine. After 50-99% of the amount of the monomer has been absorbed into the polyolefine particles, a water suspension is prepared by adding to the above-mentioned mixture about 80-1000 parts by weight water, based on 100 parts of weight of polyolefine+vinyl monomer, as well as a stabilizing agent. The temperature of the water suspension is then increased for polymerizing the vinyl monomer.Type: GrantFiled: January 27, 1993Date of Patent: April 5, 1994Assignee: Neste OyInventors: Torvald Vestberg, Ismo Lehtiniemi
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Patent number: 5300581Abstract: A process for producing a thermoplastic elastomer having excellent elasticity even with a small rubber content and being excellent in strength, coatability and thermal adhesion to different materials such as various resins, metals or the like, which comprises melting and kneading a material mixture containing (A) particles of a polymer composed of a crystalline olefin polymer portion and a noncrystalline olefin polymer portion, (B) a graft-modifier and (C) a radical initiator to form a graft-modified and crosslinked thermoplastic elastomer having a cyclohexane-insoluble content of at least 40% by weight; and a thermoplastic elastomer obtained by the above method.Type: GrantFiled: October 18, 1991Date of Patent: April 5, 1994Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Yasuhiko Otawa, Katsuo Okamoto, Mamoru Kioka, Takashi Ueda
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Patent number: 5292818Abstract: According to the present invention, a production method of a carrier appropriate for cation exchange liquid chromatography and a method for determining glycosylated hemoglobins using the carrier obtained by the production method are provided.The production method of the carrier comprises the steps of providing hydrophobic particles to which a polymerization initiator is adhered; and adding a polymerizable monomer having a carboxyl group to an aqueous dispersion in which the hydrophobic crosslinked polymer particles are dispersed and polymerizing the monomer on surfaces of the hydrophobic crosslinked polymer particles, thereby obtaining polymer particles the surfaces of which are coated with polymer layers having carboxyl groups.Type: GrantFiled: July 20, 1982Date of Patent: March 8, 1994Assignee: Sekisui Kagaku Kogyo Kabushiki KaishaInventors: Kazuyuki Oishi, Kazutoshi Yamazaki, Toshiki Kawabe, Masahiro Takechi, Makoto Takahara
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Patent number: 5286800Abstract: Polyolefin graft copolymers are disclosed which comprise a polyolefin homopolymer or copolymer backbone polymer having a plurality of free radically polymerized polymeric segments chemically bonded as side chains. It has been found that the use of a borane-containing polyolefin comprising a copolymer of at least one alpha-olefin having from about 2 to 22 carbon atoms copolymerized with another monomer containing organoborane functional groups can be used as a backbone polymer to prepare the graft copolymers of the present invention. Under oxidation conditions, the borane group becomes the reaction site for the free radical polymerization and copolymerization. Numerous free radical polymerizable monomers, such as methyl methacrylate, styrene, alpha-methylstyrene, acrylonitrile and the like, can be polymerized to yield high molecular weight graft copolymers. By this synthetic route, high graft efficiency is observed with only a very low concentration of homopolymer being produced.Type: GrantFiled: April 6, 1992Date of Patent: February 15, 1994Assignee: The Pennsylvania Research CorporationInventors: T. C. Chung, G. J. Jiang, D. Rhubright
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Patent number: 5284495Abstract: Additives which improve the low-temperature properties of distillate fuels are the oligomeric/polymeric reaction products of anhydrides and one or more of the following long-chain diols: aminodiols, diaminodiols, amidodiols, with optional termonomers.Type: GrantFiled: September 17, 1992Date of Patent: February 8, 1994Assignee: Mobil Oil CorporationInventors: David J. Baillargeon, Angeline B. Cardis, Dale B. Heck, Susan W. Johnson
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Patent number: 5280073Abstract: Elastomers based on acrylates, which are comprised, in the amount of at least 40 wt. % and as much as 100 wt. %, of one or more copolymers having a molecular weight >50,000 daltons and comprised of units of:i) acrylate monomers in the amount of 50-95 wt. %, andii) macromonomers comprised of a vinylic group and, covalently bonded with such group, a polyvinyl unit selected from the group of acrylates and methacrylates and having a glass transition temperature Tg at least 60.degree. C. and molecular weight 500-100,000 dalton.Type: GrantFiled: April 20, 1992Date of Patent: January 18, 1994Assignee: Rohm GmbH Chemische FabrikInventors: Werner Siol, Klaus Albrecht, Michael Muller, Klaus Koralewski
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Patent number: 5272211Abstract: Polymers comprising blocks of a hydrogenated conjugated diene (B), a vinylarene (A), and an alkyl methacrylate (M), are readily prepared as a mixture of molecules having the structures B-A-M and B-A-M-A-B wherein both structures are effective as viscosity index improvers for oil compositions. Reaction of the polymers with a primary or secondary amine results in a dispersant viscosity index improver.Type: GrantFiled: December 21, 1992Date of Patent: December 21, 1993Assignee: Shell Oil CompanyInventors: Robert J. Sutherland, Donn A. DuBois
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Patent number: 5270401Abstract: Disclosed is a plastics composition comprising a thermoplastic blend comprising: (1) 5-95 wt % of a polyamide (PA) and 95-5 wt % of a polyester (PE) incorporating 1-50 wt % of an aliphatic dimer fatty acid, (2) 0.01-30 parts by weight of a compound having at least one ethylenically unsaturated group or propylene group and further having a carboxylic, acid anhydride, acid amide, imido, carboxylic ester, amino or hydroxyl group per 100 parts by weight based on the combined weight of PA and PE, (3) 0-90 parts by weight of a polyester not modified with dimer fatty acid per 100 parts by weight based on the combined weight of PA and PE. Preferably the polyester (PE) is a polyethylene terephthalate or polybutylene terephthalate modified with di-oleic acid. The blends have a greatly improved elongation at break and are readily spinnable.Type: GrantFiled: October 11, 1991Date of Patent: December 14, 1993Assignee: DSM N.V.Inventors: Chi K. Sham, Wilhelmus T. M. Jansen, Martin A. Doherty
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Patent number: 5266645Abstract: Graft polymerizates on the basis of acrylates and methacrylates, comprise one or more graft monomers of the formula (I) ##STR1## where R.sub.1 stands for a hydrocarbon group having 2-24 carbon atoms and a base polymer of which 55-100 wt. % is synthesized from one or more monomers of the formula (II) ##STR2## wherein R.sub.2 stands for a hydrocarbon group having 2-24 carbon atoms, provided that the groups R.sub.1 and R.sub.2 exhibit Van-der-Waals volumes which differ by less than 30%, and that at least 10 wt. % based on the total monomers of formula (I) are grafted on the base polymer.Type: GrantFiled: December 19, 1991Date of Patent: November 30, 1993Assignee: Roehm GmbH Chemische FabrikInventors: Werner Siol, Wolfgang Klesse, Klaus Koralewsky, Ulrich Terbrack
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Patent number: 5266632Abstract: A grafting reaction system comprises an activated polymer and a grafting medium containing a monomer, with the system containing free radicals. The system further comprises 0.1 to 2% by weight of the grafting medium and monomer of a homopolymerization inhibitor compound, the inhibitor compound comprising a compatabilizing function toward the grafting medium which is selected from the group consisting of sulfonic, carboxylic and phenolic groups, and an inhibiting function which acts as a transfer agent for the free radicals, the inhibiting function being an allyl-type unsaturated group. The inhibitor compound has a diffusing capacity through the grafting medium which is greater than its diffusing capacity through the polymer.Type: GrantFiled: May 24, 1990Date of Patent: November 30, 1993Assignee: Institue Textile de FranceInventors: Roger Chatelin, Louis Gavet
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Patent number: 5266646Abstract: Multi-stage polymer particles comprising at least one hydrophobically-modified, ionically-soluble polymer stage polymerized from a) hydrophobic monomer, b) ethylenically-unsaturated, ionizable monomer, c) non-ionic, ethylenically-unsaturated monomer and optionally d) multi-functional compound are improved thickeners.Type: GrantFiled: August 24, 1992Date of Patent: November 30, 1993Assignee: Rohm and Haas CompanyInventors: Eric K. Eisenhart, Dennis P. Lorah, Susan R. Gill, Eric A. Johnson
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Patent number: 5262484Abstract: Graft copolymers and processes for the preparation thereof are provided. The copolymers comprise a base polymer having grafted thereto a monomeric 2-alkenyl azlactone. The surface properties of the graft copolymers can be modified by binding thereto nucleophilic reagents comprising further functional groups with desired properties. Further, the amount of azlactone available at the surface of a graft copolymer for binding to such nucleophilic reagents can be controlled by selecting a surface against which the graft copolymer is formed. The graft copolymers exhibit desirable thermoplastic, melt flow, and adhesion properties and are particularly useful for immobilizing proteins. Methods of immunoassay based on the immobilization of proteins are also disclosed. Another utility of the graft copolymers involves the compatibilizing of immiscible polymer blends.Type: GrantFiled: September 9, 1992Date of Patent: November 16, 1993Assignee: Minnesota Mining and Manufacturing CompanyInventors: Patrick L. Coleman, Thomas A. Kotnour, Richard J. Rolando
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Patent number: 5262479Abstract: Improved plasticizer resistant pressure sensitive hot melt adhesive compositions are prepared by incorporating in the adhesive polymer, tackifying resin and oil 5 to 70% by weight of the adhesive of a core shell modifier comprising a crosslinked rubbery core and a glassy thermoplastic polymer shell, the core being crosslinked by the presence therein of up to 5% by weight of a polyunsaturated monomer having two or more non-conjugated sites of unsaturation of unequal reactivity.Type: GrantFiled: November 24, 1992Date of Patent: November 16, 1993Assignee: National Starch and Chemical Investment Holding CorporationInventor: Singa D. Tobing
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Patent number: 5260383Abstract: A process for preparing linear block and three arm star block copolymers having blocks of polyisobutylene and blocks of anionically polymerizable monomers comprises mixing a first solution of a polyisobutylene having a number average molecular weight of from about 4,000 to about 60,000 and having from 1 to 3 terminal allylic halogens with a second solution of a living alkali metal terminated polymer having a number average molecular weight of from about 4,000 to about 60,000 in relative proportions at a temperature of from about 10.degree. C. to about 80.degree. C. for a period of time of from about 30 minutes to about 24 hours whereby a significant amount of linear block or three arm star block copolymer is formed. A polyisobutylene having from 1 to 3 terminal allylic halogens is provided and a process for preparing said polyisobutylene.Type: GrantFiled: April 17, 1991Date of Patent: November 9, 1993Assignee: Polysar Rubber CorporationInventor: Akhtar Osman
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Patent number: 5258466Abstract: Emulsion polymers which are prepared by free-radical polymerisation of monomers in the presence ofa) polymers of the formulae ##STR1## wherein the radicals have the meanings given in the description, and b) low-molecular anionic emulsifiers,are outstandingly suitable as surface sizes for paper. They are distinguished by a low tendency to foaming and by a wide application spectrum.Type: GrantFiled: June 12, 1991Date of Patent: November 2, 1993Assignee: Bayer AktiengesellschaftInventors: Gunter Sackmann, Joachim Konig, Fritz Puchner, Heinz Baumgen
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Patent number: 5254667Abstract: New macromers useful for the preparation of white, stable, high solids, low viscosity vinyl graft polymer polyol dispersions and processes for the manufacture of the macromers are disclosed.Type: GrantFiled: July 10, 1989Date of Patent: October 19, 1993Assignee: BASF CorporationInventor: John E. Davis
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Patent number: 5248733Abstract: Matte vinyl chloride polymers are prepared by suspension polymerizing a vinyl chloride monomer or a vinyl monomer mixture mainly comprising vinyl chloride in an aqueous medium in the presence of (A) a polyfunctional monomer having at least two ethylenic double bonds in a molecule and (B) a polymeric matting agent containing 3 to 25% by weight of a tetrahydrofuran-insoluble gel fraction. The polymers are effectively moldable and present uniform matte effect.Type: GrantFiled: July 8, 1991Date of Patent: September 28, 1993Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Hajime Kitamura, Ichiro Kaneko
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Patent number: 5247040Abstract: This invention relates to a two stage aqueous emulsion polymerization process for making graft copolymers. In the first stage, at least one first ethylenically unsaturated monomer is polymerized in the presence of at least one mercapto-olefin compound to form a macromonomer with terminal functional groups. In the second stage, at least one second ethylenically unsaturated monomer is polymerized in the presence of the macromonomer such that a copolymer is formed with a backbone of polymerized units of the at least one second ethylenically unsaturated monomer and side chains of the macromonomer.Type: GrantFiled: June 27, 1991Date of Patent: September 21, 1993Assignee: Rohm and Haas CompanyInventors: David R. Amick, William D. Emmons, Dennis P. Lorah
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Patent number: 5247025Abstract: Graft copolymers obtained byA) emulsion polymerization of from 5 to 35% by weight of a monomer mixture ofa.sub.1) 60-80% by weight of one or more vinylaromatic monomers,a.sub.2) 20-40% by weight of one or more ethylenically unsaturated nitriles,B) subsequent emulsion polymerization, in the presence of the emulsion polymer obtained in stage A), of 20-45% by weight of a monomer mixture ofb.sub.1) 50-75% by weight of one or more vinylaromatic monomers,b.sub.2) 25-50% by weight of one or more C.sub.1 -C.sub.18 -alkyl acrylates,C) subsequent emulsion polymerization, in the presence of the emulsion polymer obtained in stage B), of 5-35% by weight of a monomer mixture ofc.sub.1) 60-80% by weight of one or more vinylaromatic monomers,c.sub.2) 20-40% by weight of one or more ethylenically unsaturated nitriles,D) subsequent emulsion polymerization, in the presence of the emulsion polymer obtained in stage C), of 15-45% by weight of a monomer mixture ofd.sub.1) 80-99.9% by weight of one or more C.sub.1 -C.sub.Type: GrantFiled: March 2, 1992Date of Patent: September 21, 1993Assignee: BASF AktiengesellschaftInventors: Hans-Helmut Goertz, Guenter Hatzmann, Werner Oschmann
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Patent number: 5247024Abstract: An improved process for the preparation of segmented copolymers of polyolefins and poly(methacrylates) is disclosed.Type: GrantFiled: June 15, 1992Date of Patent: September 21, 1993Assignee: Rohm and Haas CompanyInventors: John Natoli, Min-Yin Chang
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Patent number: 5244979Abstract: A pigment dispersing agent for paints is constituted with a particular acrylic polymer component having a tertiary amino group and/or a nitrogen-containing heterocyclic ring and a particular polyester component, and has particular number average molecular weight and amine value. This pigment dispersing agent is applicable to both acrylic resin series and polyester resin series paints as well as thermosetting type paints.Type: GrantFiled: April 25, 1991Date of Patent: September 14, 1993Assignee: Nippon Oil and Fats Company, LimitedInventors: Toshio Yamamoto, Hisao Ogawa, Toshiya Kitamura, Yoshiaki Matsukura
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Patent number: 5239008Abstract: A process for the emulsion polymerization of graft copolymers comprising the steps of: a) obtaining an unsaturated polymer containing terminal or pendant polymerizable functionalities; b) dissolving the resultant unsaturated polymer in an ethylenically unsaturated monomer in the presence of a surfactant in water to form an aqueous phase; c) microfluidizing the aqueous phase of (b) to a size of less than 0.5 u; and d) subsequently graft polymerizing a monomer with the unsaturated polymer in the microfluidized aqueous phase using free radical polymerization techniques; such that the graft polymerization reaction occurs within each micelle thereby resulting in uniform particles of the predetermined particle size.Type: GrantFiled: June 28, 1991Date of Patent: August 24, 1993Assignee: National Starch and Chemical Investment Holding CorporationInventors: Paul R. Mudge, Sirisoma Wanigatunga
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Patent number: 5229456Abstract: A novel graft copolymer capable of imparting to a polyolefin when blended therewith high tensile modulus and high sag resistance without increasing melt viscosity, and a method of making the same. The graft copolymer is a polyolefin having a relatively high weight-average molecular weight methacrylate polymer grafted thereto. The graft copolymer is formed by dissolving or swelling a non-polar polyolefin in an inert hydrocarbon solvent, heating to dissolve the polyolefin, and while stirring the mixture, adding a methacrylate monomer, together with an initiator to produce a constant, low concentration of radicals, to form a graft copolymer with a high molecular weight polymer chain covalently bonded or grafted to the polyolefin backbone. The graft copolymer can be separated from the solvent, isolated by volatilizing the solvent, for example in a devolatilizing extruder, and extruded into a desired shape such as a sheet, tube or the like. This graft copolymer can be blended with a poolyolefin matrix.Type: GrantFiled: January 31, 1992Date of Patent: July 20, 1993Assignee: Rohm and Haas CompanyInventors: Casmir S. Ilenda, Newman Bortnick, William J. Work
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Patent number: 5227432Abstract: The invention relates to acrylate copolymers with free double bonds, which are obtainable by copolymerization ofa) 3 to 30% by weight of ethylenically unsaturated monomers with at least two polymerizable double bonds,b) 5 to 60% by weight of monomers with a functional group andc) other ethylenically unsaturated monomers, the sum of all the monomers being 100% by weight, and subsequent reaction of the polymer (A) formed with compounds (B) which, in addition to a group which can react with the functional groups of (A), contain at least one ethylenically unsaturated polymerizable double bond.The invention also relates to processes for the preparation of the acrylate copolymers.Type: GrantFiled: September 28, 1989Date of Patent: July 13, 1993Assignee: BASF Lacke & Farben AGInventor: Werner Jung
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Patent number: 5219945Abstract: This application discloses linear methacrylic ABC triblock polymers in which the composition of each of the three blocks is different and wherein at least one of the blocks is hydrophobic and at least one of the blocks is hydrophilic.Type: GrantFiled: February 20, 1992Date of Patent: June 15, 1993Assignee: E. I. Du Pont de Nemours and CompanyInventors: Ira B. Dicker, Walter R. Hertler, Sheau-Hwa Ma
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Patent number: 5219947Abstract: A toner for developing electrostatic latent images with a good combination of fixability, anti-offset characteristic, anti-sticking characteristic and pulverizability is provided as a composition comprising a colorant or magnetic material and a binder resin. The binder resin has 0.1 to 60 wt. % of a chloroform-insoluble or a THF (tetrahydrofuran)insoluble and a THF-soluble, the THF-soluble providing a molecular weight distribution in the chromatogram of GPC (gel permeation chromatography) thereof such that there are a main peak in the molecular weight range of 1,000 to 25,000 and a sub-peak or shoulder in the molecular weight range of 2,000 to 150,000. The binder resin may suitably be obtained through two polymerization steps including a solution polymerization step and a suspension polymerization step.Type: GrantFiled: April 23, 1990Date of Patent: June 15, 1993Assignee: Canon Kabushiki KaishaInventors: Satoshi Yasuda, Kiichiro Sakashita, Yasuo Mitsuhashi, Seiichi Takagi, Shuichi Aita, Yoshinobu Nagai, Toshiaki Nakahara
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Patent number: 5212251Abstract: Alkali-resistant core-shell polymers having an acid-insoluble core and an acid-soluble shell are prepared by sequential emulsion polymerization of a monomer mixture having acid-ionizable functionality such that the resulting polymer has an acid-insoluble core and an acid-soluble shell. Films from these alkali-resistant, core-shell polymers are resistant to high pH environments where alkali-resistance is required. The alkali-resistant, core-shell polymers are useful in applications such as inks, clear overprint varnishes, coatings, metal adhesion, fiber treatment, paper treatment, cathodic deposition coatings, stain blocking, coagulants and flocculants.Type: GrantFiled: September 24, 1990Date of Patent: May 18, 1993Assignee: Rohm and Haas CompanyInventors: Dennis P. Lorah, Mark S. Frazza
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Patent number: 5204413Abstract: A process for producing a toner resin by a two-step suspension polymerization process, which entails preparing a polymer of high molecular weight having a weight average molecular weight of greater than about 350,000 from at least one monomer having a polymerizable vinyl group using a compound having at least three t-butyl peroxide groups in one molecule, as a polymerization initiator, and then preparing a low molecular weight polymer in the presence of the high molecular weight polymer. A toner having an excellent fixing property and offset resistance can be obtained from the above resin.Type: GrantFiled: March 27, 1991Date of Patent: April 20, 1993Assignee: Mitsubishi Rayon Company, LimitedInventors: Ryo Funato, Syuji Takahiro, Keiji Yoshida, Shinji Kubo, Motoshi Inagaki
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Patent number: 5202380Abstract: The addition of a polyolefin-acrylic graft copolymer to blends of polyolefin and core-shell polymers improves compatibility and allows core-shell polymers to be used as processing and performance modifiers polyolefins. Generally the compatibilizing additive is a graft copolymer of a polyolefin and a methacrylate. More specifically, the graft copolymer is derived from at least about 80% of a monomer of a methacrylic ester of the formula CH.sub.2 .dbd.C(CH.sub.3)COOR, where R may be alkyl, aryl, or aralkyl, substituted or unsubstituted, and less than 20%, based on a total monomer weight, of an acrylic or styrenic monomer copolymerizable with the methacrylic ester grafted on to a non polar polyolefin trunk, so that at least one chain is a polymer with a weight average molecular weight greater than about 20,000 and is present in a weight ratio with the polyolefin trunk of from about 1:9 to about 4:1.Type: GrantFiled: June 24, 1992Date of Patent: April 13, 1993Assignee: Rohm and Haas CompanyInventors: Casmir S. Ilenda, David L. Dunkelberger, Dennis J. Labanoski
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Patent number: 5198500Abstract: Disclosed is an improved process of the post-emulsion method capable of forming crosslinked resin particles which do not have fusion bonds between particles and which have good storage stability and good redispersibility in an aqueous medium. The process comprises (a) dispersing in an aqueous medium a resinous component comprising (I) a base resin having a glass transition temperature (Tg) of 0.degree. C. or less and a polymerizable double bond, (II) a monomer which, when polymerized, provides a resin of which Tg is 20.degree. C. higher than that of said base resin, or a resin of which Tg is 20.degree. C. higher than that of the base resin, and (III) a polyvinyl compound; (b) crosslinking inside the dispersed resin particles and; (c) removing the aqueous medium therefrom.Type: GrantFiled: January 15, 1991Date of Patent: March 30, 1993Assignee: Nippon Paint Co., Ltd.Inventors: Hisaichi Muramoto, Yusuke Ninomiya, Keizou Ishii, Shinichi Ishikura
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Patent number: 5198501Abstract: A poly(vinyl chloride) product is provided containing as a permanent plasticizer, a copolymer of vinyl acetate and ethylene which is copolymerized in the presence of porous particles of the PVC. The copolymerization is carried out in either suspension or emulsion and under conditions which provide a copolymer containing 60 to 85 wt % vinyl acetate in amounts from about 20 to 60 wt % of the vinyl acetate/ethylene copolymer in the final composition. A free flowing powder is formed which can be used for PVC compounding operations. If over 60 up to 80 wt % of the composition contains the copolymer, the product is a reinforced VAE dispersion.Type: GrantFiled: August 20, 1990Date of Patent: March 30, 1993Assignee: Air Products and Chemicals, Inc.Inventors: Richard H. Bott, Lloyd M. Robeson, Hsueh-Chi Lee, Cajetan F. Cordeiro
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Patent number: 5194491Abstract: The invention relates to an improved process for producing a rubber-modified styrene resin, and a rubber-modified styrene resin composition resulting therefrom, such resin having improved mechanical strength, impact resistance and high gloss, such being accomplished by producing a rubber-modified styrene resin containing substantially no rubber particle having a density of not higher than 0.96 gm/cm.sup.3 at 25.degree. C.Type: GrantFiled: May 24, 1990Date of Patent: March 16, 1993Assignee: Mitsubishi Monsanto Chemical CompanyInventors: Takaaki Sakita, Minoru Uchida, Tetsuo Hayase, Hiromitsu Hatakeyama
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Patent number: 5187233Abstract: A process is provided for the production of a graft copolymer by means of emulsion polymerization. The graft base used is a sulfonate group-containing vinyl ester/ethylene latex which is stabilized exclusively by an anionic emulsifier (CMC.gtoreq.0.5% by weight in H.sub.2 O) and is grafted, preferably with vinyl chloride, without further addition of emulsifier or protective colloid. The graft copolymers according to the invention have good water resistance and very good thermoplastic processability. They are useful as impact modifiers and for the production of articles, such as, soft to semi-hard moldings.Type: GrantFiled: March 8, 1990Date of Patent: February 16, 1993Assignee: Wacker-Chemie GmbHInventors: Peter Ball, Josef Christ, Albin Frank, Klaus Marquardt, Manfred Selig
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Patent number: 5185406Abstract: A process for preparing an elastomer-containing vinyl chloride graft copolymer having an elastomer content of up to 65% by weight. The process comprises forming a mixture of an elastomer dispersion, water, buffer and initiator, adding a precipitating agent; after precipitation has occurred, metering into the mixture the grafting monomer and a protective colloid; and then subjecting the mixture to suspension polymerization conditions. The graft copolymeric material is useful as an impact modifier or as plasticizer-free flexible PVC.Type: GrantFiled: July 27, 1990Date of Patent: February 9, 1993Assignee: Wacker Chemie GmbHInventor: Peter Grauer
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Patent number: 5179160Abstract: There is here provided a thermoplastic resin composition which comprises (I) 50 to 99% by weight of a polyamide resin, and (II) 50 to 1% by weight of a multi-phase structure thermoplastic resin which is composed of 5 to 95% by weight of at least one ethylene copolymer selected from the group consisting of epoxy group-containing ethylene copolymers, ethylene-unsaturated carboxylic acids, alkyl ester copolymers and metallic salts of the ethylene-unsaturated carboxylic acids, and ethylene-vinyl ester copolymers, and 95 to 5% by weight of a vinyl polymer or copolymer obtained from at least one vinyl monomer, either of both the components possessing a dispersion phase where each particle has a diameter of 0.001 to 10 .mu.m. A method for preparing the above-mentioned thermoplastic resin composition is also provided here.Type: GrantFiled: August 17, 1988Date of Patent: January 12, 1993Assignees: Nippon Petrochemicals Co., Ltd., Nippon Oil & Fats Co., Ltd.Inventors: Yuichi Orikasa, Suehiro Sakazume