Derived From An Ethylenically Unsaturated Carboxylic Acid And An Ethylenically Unsaturated Alcohol Patents (Class 526/327)
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Patent number: 5393608Abstract: A non-silicone release material for use with pressure sensitive adhesives, which contains a copolymer of:(1) an acrylate ester of the formula I: ##STR1## wherein x ranges from about 30 to about 50; and (2) at least one comonomer selected from a vinyl monomer, an acrylate monomer or a methacrylate monomer. Preferably, the acrylate ester is about 1 to about 25% by weight of the copolymer composition. The release material can be used as a backsize for pressure sensitive adhesives, particularly repositionable labels.Type: GrantFiled: May 25, 1993Date of Patent: February 28, 1995Assignee: Moore Business FormsInventor: Hung Y. Chao
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Patent number: 5350822Abstract: A plastic optical lens composition comprising about 40-60 wt% of monomer A, which is a hi-functional 3,9-divinylspirobi(m-dioxane); about 60-40 wt% of monomer B, which is either styrene or chlorostyrene; maleic acid di-allyl ester, the amount thereof is about 3-8 wt% of the aggregate amount of monomer A and monomer B; and a free radical polymerization initiator such as benzyl or dicumyl peroxide, the amount thereof is about 1-5 wt% of the aggregate amount of monomer A and monomer B. The plastic lens composition of the present invention exhibits high refractive index, low shrinkage factor, low specific gravity, low water absorption rate, excellent impact resistance and cutting and grinding processability, and can be polymerized using an injection molding process with substantially reduced reaction time.Type: GrantFiled: June 16, 1993Date of Patent: September 27, 1994Assignee: Industrial Technology Research InstituteInventor: Chi-Chang Chen
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Patent number: 5132384Abstract: The present invention discloses an optical material having excellent transparency, impact resistance and heat resistance and having a low specific gravity and a high refractive index comprising a resin obtained by radical polymerization of specific difunctional (meth)acrylate (A) and aromatic vinyl monomer (B) and, if necessary, polymerizable monomer (C) copolymerizable with the ingredients (A), or (B) or by radical polymerization of the ingredients (A), (B) and (C) under the presence of a radical polymerizable or not-radical polymerizable compound having alkoxysilyl group, epoxy group, alcoholic hydroxy group or carboxyl group in the molecule, an optical molding product comprising the optical material, as well as production process therefor. The optical molding product is utilized as for ophthalmic lenses or lenses for various kinds of optical equipments, prisms, optical fibers, optical waveguides and optical discs.Type: GrantFiled: November 21, 1990Date of Patent: July 21, 1992Assignee: Nippon Shokubai Co., Ltd.Inventors: Tatsuhito Matsuda, Yasaki Funae, Masahiro Yoshida, Tetsuya Yamamoto, Manabu Takemura
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Patent number: 5115059Abstract: Terpolymers having enhanced pour point depressant properties are disclosed which comprise (1) an alkyl ester of unsaturated monocarboxylic acid, (2) an olefinically unsaturated homo or heterocyclic-nitrogen compound, and (3) an allyl acrylate or methacrylate or a perfluoroalkyl ethyl acrylate or methacrylate. A process for preparing the terpolymers is additionally disclosed.Type: GrantFiled: December 13, 1990Date of Patent: May 19, 1992Assignee: Conoco Inc.Inventor: Hanh T. Le
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Patent number: 5028677Abstract: Novel compositions of homopolymers and copolymers containing an olefinic polymerizable end group wherein the monomeric units comprise methacrylate, acrylate, acrylic acid, styrene, vinyl esters, acrylonitrile, methacrylonitrile, vinyl halides, vinylidene halides, substituted butadienes, ethylene-sulfonic acid derivatives, acrylamide derivatives, methacrylamide derivatives, and other monomers, and mixtures thereof are disclosed.Type: GrantFiled: February 23, 1989Date of Patent: July 2, 1991Assignee: E. I. Du Pont de Nemours and CompanyInventor: Andrew H. Janowicz
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Patent number: 4980435Abstract: Terpolymers having enhanced pour point depressant properties are disclosed which comprise (1) an alkyl ester of unsaturated monocarboxlic acid, (2) an olefinically unsatured homo or heterocyclic-nitrogen compound, and (3) an allyl acrylate or methacrylate or a perfluoroalkyl ethyl acrylate or methacrylate. A process for preparing the terpolymers is additionally disclosed.Type: GrantFiled: September 18, 1989Date of Patent: December 25, 1990Assignee: Conoco Inc.Inventor: Hanh T. Le
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Patent number: 4980432Abstract: Process for the preparation of polymers by anionic (co)polymerization of ethylenically unsaturated organic monomers in the presence of an arylmethide initiator of the following general structure: ##STR1## wherein: X.sup.+ represents a cation;Y and Z (same or different) represent a hydrogen atom or an alkyl group;Ar represents a condensed aromatic group, including a substituted condensed aromatic group.Type: GrantFiled: April 11, 1988Date of Patent: December 25, 1990Assignee: Agfa-Gevaert, N.V.Inventors: Herman J. Uytterhoeven, Philippe J. Teyssie, Roger M. Fayt, Luc E. Leemans
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Patent number: 4950733Abstract: The invention pertains to capryloyloxyalkyl acrylates of the general formulaCH.sub.2 .dbd.CH--CO--O--R--O--CO--(CH.sub.2).sub.6 --CH.sub.3,where R is an alkylene group with 2 to 6 carbon atoms, their polymers and copolymers containing structure units of the general formula ##STR1## where R is alkylene group or different alkylene groups with 2 to 6 carbon atoms and the polymer contains either 100% of the capryloyloxyalkyl acrylate structure units or additional vinyl chloride structure units in the main chain or side chains.The invention also pertains to the method for preparation of capryloyloxyalkyl arcylate which consists in the esterification of hydroxyalkyl caprylate of the general formulaHO--R--O--CO--(CH.sub.2).sub.6 --CH.sub.3,where R has the above given meaning, with acrylic acid, its chloride, bromide or anhydride or of hydroxyalkyl acrylate of the general formulaHO--R--O--CO--CH.dbd.CH.sub.Type: GrantFiled: November 9, 1988Date of Patent: August 21, 1990Assignee: Ceskoslovenska akademie vedInventors: Rudolf Lukas, Stanislav Sevcik, Vera Paleckova, Vladimir Pacovsky, Zdenek Mrazek, Jareslava Nohova, Olga Pradova, Milos Malik, Miloslav Kolinsky
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Patent number: 4912186Abstract: An acrylic rubber obtainable by copolymerizing a monomer mixture of:(A) 70 to 99.99% by weight of at least one compound selected from the group consisting of alkyl acrylates and alkoxyalkyl acrylates,(B) 0.01 to 10% by weight of at least one compound represented by the general formula: ##STR1## wherein R.sup.1 is a hydrogen atom or a methyl group; X is a hydrogen atom, --COOR.sup.6 (R.sup.6 is an alkyl group having 1-10 carbon atoms or an alkoxyalkyl group having 2-14 carbon atoms), or ##STR2## R.sup.2, R.sup.3 and R.sup.4 are independently hydrogen atoms or groups having 1-10 carbon atoms whose carbon atom adjacent to C.dbd.C has no hydrogen; R.sup.5 is a group having 1-10 carbon atoms whose carbon atom adjacent to C.dbd.C has no hydrogen; Y is ##STR3## or --O--; and n is 1 or 0, and (C) 0-20% by weight of at least one compound selected from the group consisting of other unsaturated compounds of the vinyl type, vinylidene type and vinylene type, in the presence of a radical polymerization initiator.Type: GrantFiled: August 25, 1988Date of Patent: March 27, 1990Assignee: Japan Synthetic Rubber Co., Ltd.Inventors: Toshio Ohhara, Yukihiro Sawada, Hiroshi Ise, Toshio Miyabayashi, Hiroji Enyo, Hozumi Sato
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Patent number: 4889900Abstract: A process is disclosed for treatment of alkyl methacrylate monomers for subsequent polymerization by an anionic initiator to produce a polymer with a molecular weight distribution between about 1.20 and about 1.01. The process involves treatment of the monomer with an aluminum hydrocarbyl or boron hydrocarbyl in quantities which permit polymerization in the presence of the by-products of the reaction between the impurities and the aluminum hydrocarbyl or boron hydrocarbyl.Type: GrantFiled: June 12, 1989Date of Patent: December 26, 1989Assignee: Shell Oil CompanyInventor: Donn A. DuBois
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Patent number: 4833223Abstract: A method for producing a high molecular weight polystyrene comprises polymerizing styrene monomer and from about 0.01 to about 2.0 parts by weight per 100 parts by weight total monomer of a polyfunctional monomer in an emulsion polymerization medium. Preferred polyfunctional monomers include allyl groups, vinyl groups or mixtures thereof, and the resultant high molecular polystyrene preferably has a weight average molecular weight, Mw, greater than about 400,000.Type: GrantFiled: December 14, 1987Date of Patent: May 23, 1989Assignee: Borg-Warner Chemicals, Inc.Inventor: Charles L. Myers
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Patent number: 4791181Abstract: A polymerization process which comprises contacting at least one polar acrylic type or maleimide monomer under polymerization conditions with (i) a tetracoordinate organosilicon, organotin or organogermanium initiator having at least one initiating site, (ii) a co-catalyst which is a source of fluoride, bifluoride, cyanide or azide ions or a Lewis acid, and (iii) from 0.1 to 10% by weight, based on the weight of monomer, of acetonitrile.Type: GrantFiled: February 8, 1988Date of Patent: December 13, 1988Assignee: Imperial Chemical Industries PLCInventors: Anthony Pickering, Andrew J. Thorne
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Patent number: 4775731Abstract: Hydrophilic three dimensional polymers, the prevailing mass of which is formed by structural units corresponding to monomers miscible with water at any ratio, and the method for their production, wherein one weight part of the monomers miscible with water is copolymerized, by the effect of free-radical initiators, with 0.01 to 1 weight part of a polyfunctional unsaturated oligomer, which is prepared with an average degree of polymerization x=3 to x=100 by the anionic polymerization of allyl methacrylate, with the contingent addition of methacrylonitrile or methacrylic esters of univalent saturated alcohols containing 1 to 4 carbon atoms or methacrylic esters of monohydroxy compounds containing at least one etheric oxygen atom in the chain, or where 0.7 to 1 weight part of monomers miscible with water is copolymerized with 0.01 to 0.Type: GrantFiled: March 27, 1986Date of Patent: October 4, 1988Assignee: Ceskoslovenska akademie vedInventors: Otto Wichterle, Jiri Trekoval, Jiri Vacik, Jiri Michalek
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Patent number: 4691072Abstract: The conversion is increased in the preparation of polyisobutylene by polymerization of isobutylene in a polymerization zone at from 0.degree. to -130.degree. C. in the presence of from 0.01 to 1.0% by weight of a boron trifluoride catalyst, from 0.001 to 1.0% by weight of a molecular weight regulator and from 30 to 90% by weight of a low-boiling solvent which is inert under the reaction conditions, by a process in which the content of but-1-ene in the monomeric isobutylene is kept constant at from 1.9 to 2.1, in particular 2.0, % by weight.Type: GrantFiled: July 22, 1986Date of Patent: September 1, 1987Assignee: BASF AktiengesellschaftInventors: Hans Schick, Erich Kolk, Karl-Heinz Fauth, Heinrich Mohr
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Patent number: 4680352Abstract: Free radical polymerization processes employing cobalt(II) chelates of vicinal iminohydroxyimino compounds, diazadihydroxyiminodialkyldecadienes and -undecadienes, tetraazatetraalkylcyclotetradecatetraenes and -dodecatetraenes, N,N'-bis(salicylidene)ethylenediamines and dialkyldiazadioxodialkyldodecadienes and -tridecadienes as catalytic chain transfer agents for controlling the molecular weight of the homopolymers and copolymers produced.Type: GrantFiled: January 27, 1986Date of Patent: July 14, 1987Assignee: E. I. Du Pont de Nemours and CompanyInventors: Andrew H. Janowicz, Lester R. Melby
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Patent number: 4604440Abstract: Hydrophilic three dimensional polymers, the prevailing mass of which is formed by structural units corresponding to monomers miscible with water at any ratio, and the method for their production, wherein one weight part of the monomers miscible with water is copolymerized, by the effect of free-radical initiators, with 0.01 to 1 weight part of a polyfunctional unsaturated oligomer, which is prepared with an average degree of polymerization x=3 to x=100 by the anionic polymerization of allyl methacrylate, with the contingent addition of methacrylonitrile or methacrylic esters of univalent saturated alcohols containing 1 to 4 carbon atoms or methacrylic esters of monohydroxy compounds containing at least one etheric oxygen atom in the chain, or where 0.7 to 1 weight part of monomers miscible with water is copolymerized with 0.01 to 0.Type: GrantFiled: April 2, 1985Date of Patent: August 5, 1986Assignee: Ceskoslovenska Akademie VEDInventors: Otto Wichterle, Jiri Trekoval, Jiri Vacik, Jiri Michalek
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Patent number: 4521494Abstract: An emulsion polymerized latex copolymer used as a binder in paper-coating compositions with improved dry and wet binding strength comprising an ester of an ethylenically unsaturated carboxylic acid and a saturated alcohol and a hetero-unsaturated monomer selected from the group consisting of allyl acrylate, allyl methacrylate, crotyl acrylate or crotyl methacrylate. A paper-coating composition in the form of an aqueous dispersion comprising a pigment and said emulsion polymerized latex copolymer is further characterized in that said pigment is present in an amount from about 99 to about 77 weight percent based on total dry solids. A coated paper article in the form of a fibrous sheet coated on at least one surface with the paper-coating composition is also provided.Type: GrantFiled: October 19, 1983Date of Patent: June 4, 1985Assignee: The Dow Chemical CompanyInventor: Inder Mani
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Patent number: 4431787Abstract: Polymerizable acrylic monomers, and anaerobic adhesives which contain such monomers, wherein the acrylic monomers contain internal chain unsaturation in addition to terminal acrylic unsaturation.Type: GrantFiled: May 20, 1981Date of Patent: February 14, 1984Assignee: Eschem Inc.Inventor: Gerhardt P. Werber
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Patent number: 4417043Abstract: A polymer capable of forming an anisotropic melt characterized in that the polymer chain includes residues of cross-linking reactants at a concentration sufficient to give a polymer with a melt viscosity of not greater than 10.sup.7 Nsec/m.sup.2 measured by capillary rheometry at a shear rate of 10.sup.4 N/m.sup.2. The polymers exhibit favorable shear dependent viscosity characteristics in that the viscosity is high under low shear conditions and is low under high shear conditions, as judged by the viscosity characteristics of polymers of the same composition but not containing the residues of cross-linking reactants.Type: GrantFiled: January 5, 1981Date of Patent: November 22, 1983Assignee: Imperial Chemical Industries PLCInventors: Frederic N. Cogswell, Brian P. Griffin, Clive P. Smith
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Patent number: 4293674Abstract: Compound of the formula CH.sub.2 .dbd.C(CH.sub.3)CO.sub.2 R wherein R is an alkadienyl or cycloalkadienyl group which contains the 1,3- or 1,4-diene carbon skeleton, homopolymers and copolymers of the compound, and curable finishes containing the homopolymer and/or copolymer.Type: GrantFiled: June 3, 1980Date of Patent: October 6, 1981Assignee: E. I. Du Pont de Nemours and CompanyInventor: Gerald D. Andrews
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Patent number: 4258165Abstract: A method for producing a vinyl chloride resin comprising 10 to 80% by weight of tetrahydrofuran-insoluble vinyl chloride resin gel fraction and the balance of tetrahydrofuran-soluble fraction with an average polymerization degree of 1,000 or more, characterized in that vinyl chloride alone or a mixture of a major amount of vinyl chloride and a minor amount of at least one monomer copolymerizable therewith is polymerized at a temperature of 0.degree. to 50.degree. C. in the presence of at least one polyfunctional monomer having two or more ethylenic double bonds in the molecule until the whole monomer or monomers in the polymerization system are substantially polymerized. The thus obtained vinyl chloride resin is excellent in processability and capable of forming a molded article having a small compression permanent set.Type: GrantFiled: April 12, 1979Date of Patent: March 24, 1981Assignees: Sumitomo Bakelite Company, Limited, Sumitomo Bakelite Company, LImitedInventors: Tomoyuki Emura, Yasuhiro Moriuchi
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Patent number: 4255306Abstract: Discrete, crosslinked vinylidene chloride polymer microgels, having a latex particle size of less than 1 micron and a gel content of about 1 to 99 percent, such microgels being obtained by emulsion polymerizing (a) about 50 to about 95 parts by weight of vinylidene chloride, (b) about 5 to about 50 parts by weight of a copolymerizable ethylenically unsaturated comonomer, and (c) about 0.1 to about 10 parts by weight of a copolymerizable crosslinking polyfunctional comonomer. Such microgels have been found to have wide applicability as additives for synthetic foams and fibers, and for the preparation of improved coatings, films, and redispersible latexes.Type: GrantFiled: September 15, 1978Date of Patent: March 10, 1981Assignee: The Dow Chemical CompanyInventor: Dale S. Gibbs
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Patent number: 4248985Abstract: A sulfur-curable acrylic rubber composition is provided which comprises [I] 100 parts of an acrylic rubber resulting from the copolymerization in the presence of a radical initiator of (1) 30 to 89.5% by weight of at least one alkyl acrylate with the alkyl group containing 1 to 8 carbon atoms, (2) 0.5 to 10% by weight of at least one monomer of the general formula ##STR1## wherein R.sub.1 represents a hydrogen atom or a methyl group, and R.sub.2 and R.sub.3, independently from each other, represent an alkyl group containing 1 to 3 carbon atoms, (3) 10 to 60% by weight of at least one alkoxyalkyl acrylate with the alkoxy group containing 1 to 4 carbon atoms and the alkylene group containing 1 to 4 carbon atoms, and 0 to 30% by weight of at least one of monovinyl and monovinylidene unsaturated compounds other than the said compounds; and [II] 1 to 5 parts by weight of a metal compound, and [III] 0.2 to 5 parts by weight, as sulfur, of at least one of sulfur and sulfur-containing organic compounds.Type: GrantFiled: March 27, 1979Date of Patent: February 3, 1981Assignee: Nippon Zeon Co., Ltd.Inventors: Tetsu Ohishi, Kohichi Handa, Haruo Ueno
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Patent number: 4234662Abstract: Hot melt pressure sensitive adhesives are prepared by free-radical copolymerizing an acrylic-based comonomer(s) with allyl acrylate or methacrylate to produce a prepolymer with an ethylenically saturated backbone containing pendant allylic unsaturation which is then applied in fluid form to a substrate and thereafter subjected to electron beam curing.Type: GrantFiled: April 26, 1979Date of Patent: November 18, 1980Assignee: National Starch and Chemical CorporationInventors: Stephen D. Pastor, Stuart H. Ganslaw
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Patent number: 4228265Abstract: A process for producing a sulfur-curable acrylic rubber is provided which comprises radical-copolymerizing (1) an alkyl acrylate with (2) an alkenyl acrylate or methacrylate, or radical-copolymerizing (1) an alkyl acrylate, (2) an alkenyl acrylate or methacrylate, (3) an alkoxyalkyl acrylate and optionally (4) acrylonitrile. These acrylic rubbers can be cured at a rate as fast as those for curing diene-type rubbers, and the cured products exhibit superior properties without long heat-treatment after curing.Type: GrantFiled: March 27, 1979Date of Patent: October 14, 1980Assignee: Nippon Zeon Co. Ltd.Inventors: Tetsu Ohishi, Kohichi Handa, Haruo Ueno
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Patent number: 4228269Abstract: This invention relates to bonnets for making contact lenses and contact lenses having high gas permeability shaped from a polymer selected from (a) polymers consisting essentially of the polymerization reaction products of one or a combination of different alkyl styrene monomers with one or more alkyl substituents on the aromatic ring and an unsubstituted vinyl group, and optionally at least one compatible cross-linking monomer, (b) polymers consisting essentially of the polymerization reaction products of at least one alkyl styrene monomer as defined in (a) with one or a combination of other styrene monomers selected from styrene, styrene with an alkyl substituent on the vinyl group only, and styrene with both an alkyl substituent on the vinyl group and one or more alkyl substituents on the aromatic ring, and optionally at least one compatible cross-linking monomer and (c) polymers consisting essentially of the polymerization reaction products of one of the styrenes defined in (a) and (b) or combinations theType: GrantFiled: June 8, 1978Date of Patent: October 14, 1980Assignee: Wesley-Jessen Inc.Inventors: Samuel Loshaek, Chah M. Shen
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Patent number: 4214064Abstract: In a process for producing a casting plate of polymethyl methacrylate by continuously subjecting a methyl methacrylate monomer or a syrup containing soluble polymeric resins in the methyl methacrylate monomer to casting polymerization, an improvement which comprises adding a sulfur-containing compound represented by the formula:A--S-R).sub.n S-Bwherein n is an integer of 0 to 10, R is an alkylene group having 1 to 6 carbon atoms and A and B are the same or different and are each a --(CH.sub.2).sub.m --CH(XY) group in which m is an integer of 0 to 23, X is a hydrogen atom, a halogen atom or a methyl group and Y is a hydrogen atom, a cyano group, a --OCOCH.sub.3 group, a --COOR' group or a --COSR" group, R' and R" being each an alkyl group having 1 to 24 carbon atoms, and a surfactant to the starting monomer or syrup to obtain the casting plate having an improved thermal stability.Type: GrantFiled: November 30, 1977Date of Patent: July 22, 1980Assignee: Sumitomo Chemical Company, LimitedInventor: Hiroyuki Kanazawa
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Patent number: 4184992Abstract: Provided is a cross-linked polymer composition which can be in a transparent polymeric gel form having an equilibrium water content of at least 60 wt.% for use in soft contact lenses. The cross-linked polymer composition is prepared by polymerizing, using a bulk polymerization procedure, a monomer mixture comprising an alkyl methacrylate and an N-vinyllactam in the presence of a cross-linking agent comprising at least one compound selected from vinyl acrylate, vinyl methacrylate, triallyl isocyanurate and vinyl carboxylates expressed by the formula:R--COOCH.dbd.CH.sub.2).sub.nwhere R is a hydrocarbon radical having 1 to 10 carbon atoms and n is an integer of 2, 3 or 4.Type: GrantFiled: November 3, 1977Date of Patent: January 22, 1980Assignee: Toray Industries, Inc.Inventor: Shuntaro Hosaka
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Patent number: 4139691Abstract: This invention relates to a process for emulsion polymerization of a vinyl monomer in an aqueous dispersion medium in which a salt of an N-acylsarcosine and an alkali metal salt and/or ammonium salt of an oxyacid are made to coexist with each other.Type: GrantFiled: December 22, 1977Date of Patent: February 13, 1979Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Yoshio Nakai, Masamitsu Tateyama
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Patent number: 4133793Abstract: Polymers of esters of methacrylic acid having an average chain length of about 6 to about 50 mers are prepared by an anionic polymerization reaction, carried out in the presence of a chain-regulating alcohol and a catalytic amount of an alkoxide anion, in which control of the molecular weight and molecular weight distribution of the polymer are achieved by regulating the ratio of the total quantity of alcohol employed to the total monomer charge. These polymers, their hydrolysis products, and their derivatives having allyl functionality have a wide variety of applications, including use as components in films, coatings, fibers, impregnants, adhesives, printing inks, and binders, and use as modifiers, plasticizers, melt flow improvers, and leveling agents.Type: GrantFiled: September 6, 1977Date of Patent: January 9, 1979Assignee: Rohm and Haas CompanyInventors: Sheldon N. Lewis, Richard A. Haggard
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Patent number: 4107290Abstract: An anti-solar polymer has in the macromolecular chain thereof at least one unit of the formula ##STR1## wherein F is a residue derived from an aromatic compound. The anti-solar polymer can also be one having in the macromolecular chain thereof at least one unit of the formula ##STR2## wherein F.sub.1 is ##STR3## These polymers have the ability to absorb wave lengths in the range of about 280-315 millimicrons. The polymers are employed in a cosmetic composition.Type: GrantFiled: August 18, 1976Date of Patent: August 15, 1978Assignee: L'OrealInventors: Bernard Jacquet, Christos Papantoniou, Pierre Dufaure, Claude Mahieu
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Patent number: 4104457Abstract: Polymers and copolymers of vinyl chloride having a narrow grain size distribution and a large average mean diameter and a process for the preparation of same in which the polymerization of vinyl chloride is carried out in the presence of a prepolymer composition obtained by polymerization, under high turbulence, of a monomeric composition containing vinyl chloride and acrylic acid or methacrylic acid, an aliphatic ester thereof or a diester of a dihydric alcohol.Type: GrantFiled: February 3, 1977Date of Patent: August 1, 1978Assignee: Rhone-ProgilInventors: Daniel Debord, Salomon Soussan
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Patent number: 4072806Abstract: The novel polymers are prepared from a charge containing the following ingredients:(a) vinyl chloride;(b) from 50 ppm to 1% by weight of the total charge of at least one branching agent selected from the group of vinylic and allylic esters and amides and having at least two polymerizable double bonds in the molecule, in which branching agent the vinylic and allylic groups are linked directly the ester oxygen or amide atom, nitrogen respectively, as the case may be;(c) from 500 ppm to 5% by weight of the total charge of at least one chain transfer agent selected from the group consisting of unsubstituted and substituted aliphatic aldehydes, C.sub.1 and C.sub.2 halogenated hydrocarbons containing 3 or 4 atoms of chlorine or bromine in the molecule, sulfides and mercaptans;(d) at least one radical producing initiator.This charge is subjected to polymerization and the resultant vinyl chloride polymer is recovered from the reaction.Type: GrantFiled: February 23, 1976Date of Patent: February 7, 1978Assignee: IMI (TAMI) Institut for Research and DevelopmentInventors: Mani Ravey, Leonard M. Shorr, Jacques A. Waterman, deceased
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Patent number: 4029869Abstract: Attempts to prepare polystyrene by peroxide-initiated suspension polymerization at 125.degree. C resulted in polymer having narrower molecular weight distribution than desired. The problem has been solved by copolymerizing the styrene with from 0.05 to 0.35 weight per cent, based on styrene, of a modifying comonomer consisting of a non-conjugated diolefinic compound having one very reactive olefinic group and one less reactive olefinic group such as, for example, allyl methacrylate.Type: GrantFiled: December 30, 1975Date of Patent: June 14, 1977Assignee: ARCO Polymers, Inc.Inventors: Alvin R. Ingram, Harold A. Wright
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Patent number: 4025703Abstract: Novel hydrophilic modified acrylic polymers, particularly hydrodispersible or hydrosoluble modified acrylic polymers, containing, expressed in molar percentages, p % units derived from an acrylic acid or ester, q % units derived from an alkanolamide of said acid, r % units derived from the alkanolammonium salt of said acid, and s % units derived from a vinyl monomer, wherein p, q, r, s represent integers so selected that 1.ltoreq.p.ltoreq.95, O.ltoreq.q.ltoreq.99, O.ltoreq.r.ltoreq.99 and O.ltoreq.s.ltoreq.40, the sum (p+q+r+s) being equal to 100, and q and r never being nil simultaneously.Type: GrantFiled: July 23, 1975Date of Patent: May 24, 1977Assignee: Societe Nationale Elf Aquitaine (Production)Inventors: Rene Pornin, Jean-Henri Blanc, Robert Voirin
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Patent number: 4017662Abstract: This invention relates to essentially water-clear aqueous coating compositions, particularly floor polishing compositions, containing a highly hydrophilic addition copolymer of low molecular weight, a water miscible organic coalescing agent or plasticizer and, as optional components, a polyvalent metal compound, an alkali-soluble resin and a wax, with or without a wax-soluble resin. Methods of using the composition and articles containing transparent coatings derived from such compositions are also included in the invention. The compositions of this invention, when formulated with such desirable additives as wetting agents and leveling agents and adjusted to a final alkaline pH of between 7.Type: GrantFiled: January 24, 1972Date of Patent: April 12, 1977Assignee: Rohm and Haas CompanyInventors: David R. Gehman, Irwin S. Fiarman
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Patent number: 4013820Abstract: Known polymers of a defined class are converted into a universally useable tableting ingredient that provides controlled release of a drug from tablets made with this material. The new material is made in a rapidly stirred, nonaqueous solvent in a one-step process.Type: GrantFiled: November 7, 1974Date of Patent: March 22, 1977Assignee: Abbott LaboratoriesInventors: Bahram Farhadieh, James Maynard Berdahl
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Patent number: 3969298Abstract: Lipophilic aminimides containing ethylenically-unsaturated moieties and carboxylic acid groups are disclosed. These compounds are useful as monomeric emulsion stabilizers, and may be polymerized with various co-monomers to provide pressure-sensitive adhesives.Type: GrantFiled: November 8, 1974Date of Patent: July 13, 1976Assignee: The Kendall CompanyInventor: Robert C. Gasman
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Patent number: 3966696Abstract: A process for suspension polymerization of vinyl chloride or a mixture of vinyl chloride and a monomer copolymerizable therewith in an aqueous medium in the presence of an oil-soluble polymerization catalyst is improved by the use of a suspending agent comprising a well known protective colloid and a saccharose alkyl ester.Type: GrantFiled: March 6, 1975Date of Patent: June 29, 1976Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Kunizoh Kidoh, Hidetora Kashio, Toshio Hosokawa, Kazuo Kusida
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Patent number: RE31322Abstract: A process for producing a sulfur-curable acrylic rubber is provided which comprises radical-copolymerizing (1) an alkyl acrylate with (2) an alkenyl acrylate or methacrylate, or radical-copolymerizing (1) an alkyl acrylate, (2) an alkenyl acrylate or methacrylate, (3) an alkoxyalkyl acrylate and optionally (4) acrylonitrile. These acrylic rubbers can be cured at a rate as fast as those for curing diene-type rubbers, and the cured products exhibit superior properties without long heat-treatment after curing.Type: GrantFiled: September 23, 1981Date of Patent: July 26, 1983Assignee: Nippon Zeon Co. Ltd.Inventors: Tetsu Ohishi, Kohichi Handa, Haruo Ueno