Two Or More Monomers-containing Carboxylic Acid Or Derivative Patents (Class 524/823)
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Patent number: 5902852Abstract: It has been determined that rubbery terpolymers of a conjugated diolefin monomer, a vinyl aromatic monomer, and N-(isobutoxymethyl) acrylamide (IBMA) can be used to modify asphalt cement to greatly enhance the resistance to shoving, rutting, and low temperature cracking of asphalt concretes made therewith. These rubbery polymers have a Mooney viscosity which is within the range of about 35 to about 80. It has further been determined that these rubbery terpolymers are compatible with virtually all types of asphalt. It is particularly preferred for the rubbery polymers of this invention to also contain repeat units which are derived from hydroxypropyl methacrylate (HPMA).Type: GrantFiled: October 21, 1997Date of Patent: May 11, 1999Assignee: The Goodyear Tire & Rubber CompanyInventors: Gerald Owen Schulz, Daniel Frederick Klemmensen
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Patent number: 5872181Abstract: Improved aqueous emulsion vinyl acetate-ethylene (VAE) polymer adhesives for use in packaging applications and on difficult to bond surfaces such as polyethylene, poly(ethylene terephthalate), and oriented polypropylene. The VAE polymers contain about 55-80 wt % vinyl acetate, 15-45 wt % ethylene, and 0-30 wt % of one or more additional ethylenically unsaturated copolymerizable monomer, based on the total weight of monomers. Cast films of the VAE emulsion polymers of this invention should have a tensile storage modulus (test frequency of 6.28 rad/sec) within the area encompassed by the following data points: 1.times.10.sup.5 and 2.times.10.sup.7 dynes/cm.sup.2 at 23.degree. C., and 1.times.10.sup.3 and 2.times.10.sup.6 dynes/cm.sup.2 at 70.degree. C.; preferably within the area encompassed by the following data points: 1.times.10.sup.6 and 1.5.times.10.sup.7 dynes/cm.sup.2 at 23.degree. C., and 3.times.10.sup.4 and 9.times.10.sup.5 dynes/cm.sup.2 at 70.degree. C.Type: GrantFiled: July 9, 1997Date of Patent: February 16, 1999Assignee: Air Products and Chemicals, Inc.Inventors: Christian Leonard Daniels, Randolph J. Lorenz, Richard Joseph Goddard
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Patent number: 5869569Abstract: An emulsion polymer composition having fast drying properties that provides floor polish coating materials having superior resistance to black heel marks, resistance to scuffing, resistance to abrasion, adhesion, and resistance to cleaning agents characteristics, is obtained from a film forming emulsion polymer composition comprising from greater than 60 wt % to 95 wt % of a first emulsion copolymer having a glass transition temperature within the range of from 10.degree.-100.degree. C., and from 5 wt % to less than 40 wt % of a second emulsion copolymer having a glass transition temperature that is lower than that of the first emulsion copolymer and is within the range of from 0.degree.-50.degree. C.Type: GrantFiled: March 24, 1997Date of Patent: February 9, 1999Assignee: Rohm and Haas CompanyInventors: Zenichi Arai, Tomohiro Shinoda, Kunihide Takarabe
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Patent number: 5859123Abstract: The present invention relates to a water-based fluorine-containing emulsion. This emulsion contains a fluorine-containing copolymer in a disperse phase thereof This copolymer is prepared by copolymerizing: (A) a fluoroolefin, (B) an organosilicon compound containing an olefinic unsaturated bond and an alkoxysilyl group, (C) an unsaturated carboxylic acid represented by a general formula of CH.sub.2 .dbd.CH--(CH.sub.2).sub.n --COOH where n is an integer of from 3 to 15, and (D) at least one other copolymerizable monomer. A paint prepared from the emulsion is superior in storage stability and mechanical stability, although this paint belongs to a one-package paint. A coated film formed by applying the paint is superior in water resistance in its early stages, stain resistance, and weather resistance.Type: GrantFiled: November 15, 1996Date of Patent: January 12, 1999Assignee: Central Glass Company, LimitedInventors: Satoru Kobayashi, Kazuhiko Maeda, Yoshi Hirashima, Seiji Hasegawa, Kentaro Tsutsumi
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Patent number: 5756574Abstract: A process for the preparation of an aqueous polymer emulsion, in which an aqueous emulsion of a polymer which contains at least one chemically bonded monomer having at least one ethylenically unsaturated group is produced in a manner known per se so that the total content of free monomers having at least one ethylenically unsaturated double bond, ie. monomers of this type which are not chemically bonded, in the aqueous polymer emulsion is from >0 to .ltoreq.1% by weight, based on the polymer content of the aqueous polymer emulsion, and this residual monomer content is then reduced by the action of a free radical redox initiator system comprising at least one oxidizing agent and at least one reducing agent, wherein the redox initiator system comprises, as the reducing agent, one which is present, in aqueous solution, in at least two tautomeric forms in equilibrium with one another (for example aminoiminomethanesulfinic acid and/or the salts thereof).Type: GrantFiled: April 3, 1997Date of Patent: May 26, 1998Assignee: BASF AktiengesellschaftInventors: Roland Baumstark, Robert Rupaner
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Patent number: 5753036Abstract: Mortar formulations comprising a hydraulic cement and a PVOH stabilized acrylic latex or a spray dried redispersible powder made from the PVOH stabilized acrylic latex are disclosed. These include formulations suitable for use as tile mortars, patching mortars, EIFS base coats and grouts. An acrylic latex that, when formulated with hydraulic cement, has performance advantages over other latex resins in mortar, patch and exterior insulation and finishing systems. The spray dried, redispersible acrylic emulsion polymer that, when formulated with hydraulic cement, has comparable or better performance than a liquid latex in mortars and patches.Type: GrantFiled: April 21, 1997Date of Patent: May 19, 1998Assignee: Air Products and Chemicals, Inc.Inventors: E. Chris Hornaman, Christopher Thomas Hable, Randall Paul Bright, Richard Henry Bott
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Patent number: 5652292Abstract: A process for making clusters of individual polymer beads bonded together to minimize attritition in use or processing but characterized by an open structure for fast absorption of aqueous solutions comprises suspending a monomer mixture in a continuous phase at high shear agitation such that fine droplets of monomer are formed in an inert organic phase. A suspending agent which prevents the clusters from coalescing is provided. A first polyethylenically unsaturated crosslinking monomer, having substantial solubility in the aqueous phase, and an organic phase soluble initiator system are provided such that polymerization at the surface of the polymer particles occurs to form the porous clusters of the invention, A second substantially oil soluble crosslinker is optionally provided to further crosslink the clusters such that they do not coalesce.Type: GrantFiled: June 22, 1995Date of Patent: July 29, 1997Assignee: The Dow Chemical CompanyInventor: Frederick W. Stanley, Jr., deceased
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Patent number: 5569703Abstract: An adhesive comprising an aqueous emulsion of a copolymer containing an ethylene unit (A), a vinyl ester unit (B), and an acetoacetyl group-containing copolymerizable monomer unit (C) in a weight ratio of (A)/(B)/(C)=(5 to 70)/100/(0.1 to 10).Type: GrantFiled: March 14, 1995Date of Patent: October 29, 1996Assignee: Sumitomo Chemical Company, LimitedInventors: Yuuzi Yoshii, Yasuo Kaneshima, Masayoshi Nitta, Tatsuhiko Amano
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Patent number: 5476900Abstract: This invention relates to processes for preparing aqueous polymer emulsions useful as thickening agents in aqueous compositions in which plating and/or grit formation is reduced in said processes. This invention also relates to methods for reducing plating and/or grit formation in processes for preparing aqueous polymer emulsions useful as thickening agents in aqueous compositions. This invention further relates to polymers which are soluble in, or swelled by, an aqueous alkaline medium to provide thickeners for use in aqueous coating compositions, especially latex paints.Type: GrantFiled: March 17, 1995Date of Patent: December 19, 1995Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Richard D. Jenkins, David R. Bassett, Ralph A. Sterlen, Jr., Wendy B. Daniels
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Patent number: 5434215Abstract: This invention relates to a method for forming an aqueous polymeric dispersion incorporating a wax. To form the aqueous dispersion, a polymer is formed by polymerizing at least one ethylenically unsaturated monomer under conditions for forming a polymer suspended in an aqueous medium in the presence of said wax. The polymerization of the monomer in the presence of a wax in finely divided form permits the formation of a stable dispersion having excellent properties. The surfactant system is a multiple system consisting of a nonionic and/or anionic surfactant and/or an alkali metal salt of a fatty acid ester.Type: GrantFiled: June 14, 1994Date of Patent: July 18, 1995Assignee: Air Products and Chemicals, Inc.Inventors: Mahalingam Sankaran, Steven Y. Chan
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Patent number: 5306743Abstract: Aqueous synthetic resin dispersions comprising latex particles having an average particle diameter below 140 nanometers, consisting ofa) 5 to 45 weight percent of a core material having a dynamic glass transition temperature above 60.degree. C. andb) 95 to 55 weight percent of a shell material having a dynamic glass transition temperature below 80.degree. C., whereby the dynamic glass transition temperature of the shell is at least 20 K. below that of the core,which dispersions have a low minimum film forming temperature and give films of low tackiness and high block point.Type: GrantFiled: April 8, 1991Date of Patent: April 26, 1994Assignee: Rohm GmbHInventors: Wolfgang Klesse, Gerhard Markert, Marliese Weber
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Patent number: 5296531Abstract: Pigment preparations useful for pigmenting or delustering finishes for leather and leather substitutes consist essentially of pigments or delusterants or a mixture thereof, binders, water and if desired further customary dispersants and auxiliaries, the binders used being copolymers ofA) from 40 to 80% by weight of at least one aromatic vinyl compound of the general formula I ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are each hydrogen, methyl or ethyl and n is 1 or 2,B) from 20 to 60% by weight of acrylic acid or methacrylic acid or a mixture thereof, andC) from 0 to 10% by weight of further copolymerizable monomers,in the form of their salts.Type: GrantFiled: November 23, 1992Date of Patent: March 22, 1994Assignee: BASF AktiengesellschaftInventors: Horst Belde, Manfred Herrmann, Franz Leppmeier, Dietrich Lach
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Patent number: 5221284Abstract: Aqueous synthetic resin dispersions are obtainable by copolymerizingA) from 70 to 97.5 parts by weight of a monomer mixture containinga) from 40 to 75% by weight of butadiene (monomer I),b) from 25 to 60% by weight of acrylonitrile (monomer II),c) from 0 to 25% by weight of styrene (monomer III),d) from 0 to 10% by weight of one or more amides of .alpha.,.beta.-monoethylenically unsaturated monocarboxylic acids of 3 to 5 carbon atoms (monomers IV) ande) from 0 to 10% by weight of other copolymerizable monomers (monomers V) andB) from 2.5 to 30 parts by weight of one or more copolymerizable monovinyl compounds (monomers VI) in aqueous emulsion at from 30.degree. to 70.degree. C. by a method in which not less than 50% by weight of the monomer mixture A is prepolymerized to a conversion of not less than 80%, and the polymerization is then continued with the addition of the remaining monomers A and the monomers B.These dispersions are suitable as binders for protective coats on leather.Type: GrantFiled: June 20, 1991Date of Patent: June 22, 1993Assignee: BASF AktiengesellschaftInventors: Martin Meister, Guenter Eckert, Juergen Schmidt-Thuemmes, Albrecht Zosel
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Water soluble acrylic polymerizable materials, polymers made from them, and processes of making them
Patent number: 5214096Abstract: Water soluble polymerizable acrylic prepolymers can be formed from ethylenically unsaturated monomers that include monomers that provide a pendant group that is a blocked, saturated, ethylenic group, followed by unblocking the pendant saturated ethylenic group to leave a pendant ethylenically unsaturated group. These prepolymers can be copolymerized through these unsaturated groups, for instance after impregnation into a permeable substrate as in chemical grouting or shut off processes, to form cross linked solid polymers. The polymerizable monomers that are ethylenically unsaturated but which also include the blocked ethylenic group are also novel.Type: GrantFiled: December 2, 1991Date of Patent: May 25, 1993Assignee: Allied Colloids LimitedInventors: John G. Langley, Kishor K. Mistry, Kenneth C. Symes -
Patent number: 5149750Abstract: Finely divided, gel-like, water-swellable copolymers are prepared by copolymerizing(a) 100 parts by weight of water-soluble, monoethylenically unsaturated monomers,(b) from 0.01 to 5 parts by weight of monomers containing two or more ethylenically unsaturated double bonds and(c) from 0 to 20 parts by weight of water-insoluble, monoethylenically unsaturated monomersin 20-80% strength by weight aqueous solution in the presence of a polymerization initiator and from 0.1 to 10% by weight, based on the monomers used in the copolymerization, of a surfactant, by a process in which the monomers are copolymerized in the presence of initially from 0 to 50% by weight of the amount of surfactant to a conversion of not less than 60%, the remaining amount of surfactant is then added to the reaction mixture and the copolymerization is completed and the resulting gel particles dried.Type: GrantFiled: November 20, 1989Date of Patent: September 22, 1992Assignee: BASF AktiengesellschaftInventors: Manfred Niessner, Stefan Wickel, Wilfried Heide, Heinrich Hartmann
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Patent number: 5093449Abstract: A styrene-butadiene composition containing about 0.1 to 10 weight % of a monoester of maleic acid or fumaric acid provides improved bonding strength. In addition, small amounts of a functional monomer can also be included.Type: GrantFiled: October 24, 1989Date of Patent: March 3, 1992Assignee: Reichhold Chemicals, Inc.Inventors: Rebecca L. Durney Cronin, W. Scott Rutherford, James F. Campbell
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Patent number: 5082895Abstract: This invention relates to high solids, large particle size latexes useful as, and in, corrosion resistant coating compositions.Type: GrantFiled: June 18, 1990Date of Patent: January 21, 1992Inventors: Doris Wolff, Clois E. Powell
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Patent number: 5082896Abstract: A polymeric material is provided which comprises the following monomer units: from about 23 to about 32 parts by weight butyl acrylate; from about 16 to about 22 parts by weight of a lower alkyl methacrylate; from about 28 to about 40 parts by weight of a monomer selected from vinyl acetate and styrene; and from about 14 to about 20 parts by weight of an acidic monomer selected from acrylic acid and methacrylic acid; said polymer being further characterized as having an intrinsic viscosity of from about 0.16 to about 0.30 deciliter per gram as measured by a Cannon-Fenske Kinematic viscometer.Type: GrantFiled: January 17, 1989Date of Patent: January 21, 1992Assignee: Milliken Research CorporationInventor: Marie S. Chan
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Patent number: 5066712Abstract: Copolymers are formed under pressure, preferably in the presence of a surfactant having an alkylene moiety, and then post reacted with an epoxy silane. The resultant emulsion is usuable e.g. in tile adhesives and paints.Type: GrantFiled: July 3, 1989Date of Patent: November 19, 1991Assignee: Unilever Patent Holdings B.V.Inventor: Ian D. Lewis
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Patent number: 5037880Abstract: A highly dilatant copolymer dispersion containing, as essential components, an emulsion copolymer prepared from 1 to 10% by weight, based on the sum of the monomers employed, of .alpha.,.beta.-monoolefinically unsaturated carboxylic acids and other olefinically unsaturated monomers, in which the emulsion copolymer is prepared in the presence of from 5 to 30% by weight, based on the sum of the monomers employed, of allyl carboxylate or alkylallyl carboxylate containing 2 or more copolymerizable olefinic double bonds, or a mixture thereof, the alkyl radical containing 1 to 4 C atoms, and the preparation thereof.Type: GrantFiled: May 9, 1990Date of Patent: August 6, 1991Assignee: BASF AktiengesellschaftInventors: Franz Schmidt, Richard Bung, Martin Laun, Gerd Louis
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Patent number: 5017646Abstract: (A) 1 to 50% by weight of at least one end carboxyl bearing reactive vinyl monomer of the formula: ##STR1## in which R.sub.1 is hydrogen or methyl group; R.sub.2 is a substituted or unsubstituted aliphatic hydrocarbon having 2 to 10 carbon atoms, alicyclic hydrocarbon having 6 to 7 carbon atoms or aromatic hydrocarbon having 6 carbon atoms; A is a repeating unit of ##STR2## R.sub.3 is ethylene or propylene; R.sub.4 is a substituted or unsubstituted alkylene having 2 to 7 carbon atoms; R.sub.5 is a substituted or unsubstituted alkylene having 2 to 5 carbon atoms; m is an integer of 1 to 10; n is an integer of 2 to 50; X is an inorganic or organic base, and when .alpha., .beta.-ethylenically unsaturated compound(s) (B) hereinunder referred to includes a basic relative monomer, it may be hydrogen atom, and(B) 99 to 50% by weight of at least one other .alpha., .beta.-ethylenically unsaturated compounds, in an aqueous medium through an emulsion polymerization and removing the said medium therefrom.Type: GrantFiled: January 7, 1987Date of Patent: May 21, 1991Inventors: Hisaichi Muramoto, Keizuo Ishii, Tadafumi Miyazono
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Patent number: 4997879Abstract: Novel pressure-sensitive aqueous adhesive dispersions comprising 40 to 65% by weight, based on the dispersion weight, of a copolymer produced by radical emulsion polymerization of ethylene, vinyl esters of saturated carboxylic acids of 2 to 12 carbon atoms, ethylenically unsaturated carboxylic acids, ethylenically unsaturated hydroxyalkyl functional compounds, optionally present (meth)acrylic acid esters with alkyl of 4 to 12 carbon atoms and optionally present mono- or poly-ethylenically unsaturated compounds having a second order transition temperature of -20.degree. to -60.degree. C. and a K value of 50 to 180, characterized in that the copolymer was obtained by polymerization of(a) 10-45% by weight of ethylene(b) 0-25% by weight of acrylic ester(s)(c) 40-89% by weight of vinyl ester(s)(d) 0.5-4% by weight of ethylenically unsaturated carboxylic acids(e) 0.5-10% by weight of ethylenically unsaturated hydroxyalkyl-functional compounds(f) 0-0.Type: GrantFiled: April 12, 1988Date of Patent: March 5, 1991Assignee: Wacker-Chemie GmbHInventors: Rudolf Weissgerber, Klaus Marquardt, Peter Ball, Manfred Selig, Fritz Stallbauer
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Patent number: 4950711Abstract: An improved blister resistant paper coating polymer latex comprising an aliphatic conjugated diene monomer, a monoolefinic monomer and an ethylenically unsaturated carboxylic acid monomer and including a molecular weight modifier such as an organosulfur compound and a soluble salt of a nonpolymerizable organic acid.Type: GrantFiled: July 19, 1989Date of Patent: August 21, 1990Assignee: Reichhold Chemicals, Inc.Inventors: David W. Suwala, Igor B. Aksman
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Patent number: 4898909Abstract: Aqueous dispersions of copolymers having a glass transition temperature of not more than -45.degree. C. and a K value greater than 80 consist of not less than 80% by weight of acrylates of alkanols of 8 to 12 carbon atoms, from 1 to 4% by weight of .alpha.,.beta.- monoolefinically unsaturated carboxylic acids and/or their amide derivatives and from 0.1 to 3% by weight of .alpha.-methylstyrene, and are used for the production of self-adhesive structures having good tack at as low as -40.degree. C.Type: GrantFiled: December 30, 1987Date of Patent: February 6, 1990Assignee: BASF AktiengesellschaftInventors: Juergen Vietmeier, Peter Pfoehler, Gundo Brauch, Wolfgang Druschke, Albrecht Zosel
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Patent number: 4876293Abstract: The present invention is based upon the discovery that a styrene-butadiene composition contatining about 0.1 to 10 weight % of a monoester of maleic acid or fumaric acid provides improved bonding strength. In addition, small amounts of a functional monomer can also be included.Type: GrantFiled: July 18, 1988Date of Patent: October 24, 1989Assignee: Reichhold Chemicals, Inc.Inventors: Cronin Rebecca L. Durney, Rutherford W. Scott, James F. Campbell
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Patent number: 4829139Abstract: Permanently tacky pressure sensitive adhesives comprise terpolymers consisting essentially of 35-50% by weight of a vinyl ester of an alkanoic acid, 15-30% by weight ethylene and 35-50% by weight of di-2-ethylhexyl maleate or the corresponding fumarate.Type: GrantFiled: April 21, 1988Date of Patent: May 9, 1989Assignee: National Starch and Chemical CorporationInventor: Paul R. Mudge
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Patent number: 4826938Abstract: Permanently tacky pressure sensitive adhesives comprise terpolymers consisting essentially of 35-50% by weight of a vinyl ester of an alkanoic acid, 15-30% by weight ethylene and 35-50% by weight of di-2-ethylhexyl maleate or the corresponding fumarate.Type: GrantFiled: April 21, 1988Date of Patent: May 2, 1989Assignee: National Starch and Chemical CorporationInventor: Paul R. Mudge
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Patent number: 4812547Abstract: Permanently tacky pressure sensitive adhesives comprise terpolymers consisting essentially of 35-50% by weight of a vinyl ester of an alkanoic acid, 15-30% by weight ethylene and 35-50% by weight of di-2-ethylhexyl maleate or di-n-octyl maleate or a corresponding fumerate.Type: GrantFiled: December 11, 1985Date of Patent: March 14, 1989Assignee: National Starch & Chemical Corp.Inventor: Paul R. Mudge
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Patent number: 4764554Abstract: The thickener comprises:(a) 25-45% of methacrylic acid, acrylic acid or a mixture thereof;(b) 25-65% of alkyl acrylate such as methyl acrylate, ethyl acrylate, butyl acrylate, alkyl methacrylate such as methyl methacrylate, ethyl methacrylate, butyl methacrylate, lauryl methacrylate or a mixture thereof;(c) 1-40% of an ester of composition; ##STR1## in which R is a C.sub.12 -C.sub.25 alkyl group, n=at least 10; m=at least 5 A=H, --(CH.sub.2 CH.sub.2 O).sub.n --R, C.sub.1 -C.sub.20 alkyl,--(CH.sub.2 CH.sub.2 O)m-H or --(CH.sub.2 CH.sub.2 O).sub.m --CH.sub.3(d) 0-1% of a polyethylenically unsaturated monomer effective for chain branching or crosslinking such as diallyl maleate, diallyl phthalate, divinyl benzene, allyl methacrylate, ethylene glycol dimethacrylate, or trimethylol propane triacrylate,(e) optionally, but preferably, up to 10% of an ethylenically unsaturated hydrophylic monomer.Type: GrantFiled: June 1, 1987Date of Patent: August 16, 1988Assignee: Crown Decorative Products LimitedInventor: Christopher J. Tonge
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Patent number: 4748202Abstract: A process for the production of an emulsion polymerization aqueous copolymer dispersion with a solids contents of 45-55% by weight of(a) 75 to 95 parts by weight of acrylic acid and/or methacrylic acid alkyl esters of 1 to 10 carbon atoms of which 20 to 80% by weight have a water solubility of at most 2 g/l and 20 to 80% by weight a water solubility of at least 10 g/l(b) 5 to 25 parts by weight of a mixture of ethylenically-unsaturated, functional and water-soluble monomers, 25 to 100% by weight thereof consisting of unsaturated carboxylic acids.(c) 500 to 1700 parts by weight of a mixture of 70 to 100% by weight of vinyl chloride, 0 to 30% by weight of at least one vinyl ester of saturated carboxylic acids of 2 to 18 carbon atoms and 0 to 1.Type: GrantFiled: September 12, 1986Date of Patent: May 31, 1988Assignee: Wacker-Chemie GmbHInventors: Peter Ball, Richard Goetze, Klaus Marquardt, Manfred Selig
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Patent number: 4740546Abstract: An aqueous dispersion of a vinyl copolymer resin is prepared by polymerizing 1 to 15 parts by weight of a polyoxyethylene-containing hydrophilic polymerizable vinyl monomer of which polyoxyethylene moiety has an average molecular weight of 2,000 to 10,000, 99 to 85 parts by weight of at least one specific polymerizable vinyl monomer and 0 to 5 parts by weight of alpha, beta-unsaturated carboxylic acids, salts thereof or anhydrides thereof in an organic solvent, and dispersing the resulting vinyl copolymer resin solution in water.Type: GrantFiled: June 5, 1987Date of Patent: April 26, 1988Assignee: Dainippon Ink and Chemicals, Inc.Inventors: Tsuyoshi Masuda, Zengo Ninomiya
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Patent number: 4661557Abstract: A process for the preparation of stable aqueous polymer dispersions which contain an alkenyl-aromatic compound as copolymerized units, by polymerizing monomer mixtures which contain(a) not less than 2% by weight of an alkenyl-aromatic compound and(b) from 0.5 to 10% by weight of an ethylenically unsaturated C.sub.3 -C.sub.5 -carboxylic acid and/or its amide and/or its nitrile and/or an ethylenically unsaturated monomer containing sulfonic acid groups, with or without(c) acrylic acid esters, methacrylic acid esters and/or butadienein aqueous emulsion in the presence of a polymerization initiator, with or without an emulsifier and with or without a polymerization regulator, at a pH below 7, in the presence of from 0.2 to 2% by weight of formaldehyde.Type: GrantFiled: June 27, 1985Date of Patent: April 28, 1987Assignee: BASF AktiengesellschaftInventors: Hans-Georg Bubam, Lothar Heider, Uwe Biederbeck, Bernd Stanger
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Patent number: 4540739Abstract: Aqueous based pressure sensitive adhesives having improved shear properties are prepared from a latex of a monomer composition selected from the group:(a)(i) from about 60 to 99.5 weight percent of an ester of acrylic or methacrylic acid; and(ii) from about 0.5 to about 40 weight percent of a C.sub.3-9 ethylenically unsaturated carboxylic acid;(b)(i) from about 40 to 99 weight percent of a C.sub.4-8 conjugated diolefin;(ii) optionally up to about 60 weight percent of a vinyl aromatic monomer;(iii) from about 0.5 to about 40 weight percent of a C.sub.3-9 ethylenically unsaturated carboxylic acid; and(c)(i) from about 1 to 40 weight percent of a C.sub.2-4 monoolefin;(ii) from about 60 to 99.5 weight percent of a vinyl ester; and(iii) from about 0.5 to 40 weight percent of a C.sub.3-9 ethylenically unsaturated carboxylic acid;said latex having been neutralized to a pH of equal to or greater than about 6 with an alkali metal hydroxide or salt.Type: GrantFiled: April 10, 1984Date of Patent: September 10, 1985Assignee: Polysar LimitedInventor: Charles A. Midgley
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Patent number: 4365040Abstract: Strongly adhering aqueous plastic dispersions based on copolymers of olefinically unsaturated compounds, which are particularly suitable as binding agents for paints and lacquers and as adhesives, and which are distinguished by their good wet adhesion are described. This is achieved by the inclusion by polymerization of from 0.2% to 7% by weight, based on the total weight of the monomers, of vinyl and/or allyl diacetylacetate having the formula:CH.sub.2 .dbd.CH--(CH.sub.2).sub.n --O--CO--CH(CO--CH.sub.3).sub.2wherein n is 0 or 1, in the production of copolymers of the invention in an aqueous emulsion.Type: GrantFiled: October 1, 1980Date of Patent: December 21, 1982Assignee: Wacker-Chemie GmbHInventors: Herbert Eck, Robert Singer