N-containing Monomer Patents (Class 524/827)
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Patent number: 6649691Abstract: The reaction of unsaturated carbonates such as vinyl ethylene carbonate with N-aminoethylimidazolidone (TAM) under mild conditions generates a mixture of two vinyl and hydroxy functional imidazolidone carbamates which polymerize readily into acrylate or vinyl acetate based emulsion polymers. The polymers show enhanced wet adhesion (wet scrubbability) in latex paints and coatings.Type: GrantFiled: December 12, 2002Date of Patent: November 18, 2003Assignee: Air Products Polymers, L.P.Inventors: Robert Krantz Pinschmidt, Jr., Khalil Yacoub, Christian Leonard Daniels, Kien Van Phung
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Publication number: 20030171509Abstract: The invention relates to a process for cross-linking an acrylic polymer and the acrylic polymer made using this process.Type: ApplicationFiled: November 7, 2002Publication date: September 11, 2003Inventors: Gerardo Balestrieri, Carmelo Protopapa
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Patent number: 6617372Abstract: What is described is a polymeric hydrogel product of a stable, aqueous polymeric composition which composition forms a clear to translucent film upon application to a substrate, and includes, by weight, 5-75% of (a) a water-soluble polymer having (b) in situ-formed, substantially water-insoluble resinous particles of said polymer substantially uniformly dispersed therein, and (c) 25-95% of water, made by irradiating the composition with high energy electron beam or gamma-radiation.Type: GrantFiled: October 23, 2001Date of Patent: September 9, 2003Assignee: ISP Investments Inc.Inventor: Laurence Senak
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Publication number: 20030162891Abstract: Irregularities in the pore structures of polyacrylamide gels that are formed in cassettes against plastic walls are reduced or eliminated by the inclusion of an oxygen scavenger in the gel-forming solution. Avoidance of the irregularities results in electropherograms with fewer distortions in the solute bands.Type: ApplicationFiled: February 27, 2002Publication date: August 28, 2003Applicant: Bio-Rad Laboratories, Inc.Inventor: Cory M. Panattoni
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Publication number: 20020193531Abstract: The present invention involves a method of making a multiblock copolymer containing two or more types of sequences of derivatives of acrylic acid with at least one derivative being acrylic acid salt and at least one being acrylamide.Type: ApplicationFiled: July 11, 2002Publication date: December 19, 2002Applicant: REPLICATION MEDICAL, INC.Inventors: Vladimir A. Stoy, Petr Stehlicek, Zdena Kozlova, Tomas Drunecky
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Patent number: 6482890Abstract: An object is to remarkably improve the water resistance and weather resistance of the cured coating film in the aqueous curable resin composition. An aqueous dispersion is used as a main agent which contains, as essential components, gel-like resin dispersed particles having a functional group selected from a salt of a tertiary amino group or a salt of an acid group and an aqueous medium, and a compound having both an epoxy group and a hydrolyzable silyl group is used as a curing agent.Type: GrantFiled: June 28, 2001Date of Patent: November 19, 2002Assignee: Dainippon Ink and Chemical, Inc.Inventors: Teruki Kiyohara, Shin'ichi Kuwamura
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Patent number: 6465556Abstract: A composition comprising a polymer dispersion wherein said polymer is formed by reacting in the presence of water and in the presence of the reaction product of (i) one or more carboxylic fatty acids; and (ii) ammonia or one or more polyfunctional aromatic or aliphatic amines: (1) one or more ethylenically unsaturated monomers which is capable of polymerizing in an aqueous environment is provided.Type: GrantFiled: June 26, 1998Date of Patent: October 15, 2002Assignee: Rhodia Inc.Inventors: Charles E. Pratt, Paul Jakob, Jon D. Kiplinger
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Patent number: 6461728Abstract: Pressure sensitive adhesives can be formed using gamma irradiation. One embodiment is a pressure sensitive adhesive which is a polymeric reaction product formed by gamma ray irradiation of an emulsion composition. The emulsion composition includes water; (meth)acrylate monomer material; polar, free-radically polymerizable material that is copolymerizable with the (meth)acrylate monomer material; and at least one emulsifier.Type: GrantFiled: December 29, 2000Date of Patent: October 8, 2002Assignee: 3M Innovative Properties CompanyInventors: Douglas E. Weiss, Thu-Van T. Tran, Karen J. Leisinger
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Patent number: 6451922Abstract: The present invention involves a method of making a multiblock copolymer containing two or more types of sequences of derivatives of acrylic acid with at least one derivative being acrylic acid salt and at least one being acrylamide. The method includes: (e) in sequence, a first step being a catalytic reaction of nitrile groups in polyacrylonitrile dissolved in an inorganic aqueous solvent of polyacrylonitrile; and, (f) at least one subsequent step being at least one catalytic reaction of nitrile groups in absence of polyacrylonitrile solvents.The present invention also pertains to the products resulting from the method.Type: GrantFiled: April 19, 2001Date of Patent: September 17, 2002Assignee: Replication Medical, Inc.Inventors: Vladimer A. Stoy, Petr Stehlicek, Zdena Kozlova, Tomas Drunecky
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Patent number: 6444749Abstract: The invention pertains to an aqueous dispersion of particles of a polymer having a functional group for cross-linking, which is obtainable by a free radical emulsion polymerization of at least two different ethylenically unsaturated monomers, a surfactant of the formula M+.−OOC—CH═CHCOOR, wherein R is C(6-22) alkyl and M+ is Na+, K+, Li+, NH4+, or a protonated or quaternary amine, and a co-reactive compound having at least two groups capable of reacting with the functional group for cross-linking, characterized in that the glass-transition temperature (Tg) of the polymer at the center of the particle is different from the Tg of the polymer at the surface of the particle, the difference being at least 55° C., and the Tg of the polymer having the highest Tg is at least 40° C.Type: GrantFiled: February 16, 2001Date of Patent: September 3, 2002Assignee: Akzo Nobel N.V.Inventor: Dirk Emiel Paula Mestach
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Publication number: 20020103290Abstract: The present invention relates to aqueous dispersions preparable by polymerization of an olefinically unsaturated, water-insoluble compound in the presence of a water-soluble allyl or vinyl ether of the formula 1 1Type: ApplicationFiled: March 22, 2002Publication date: August 1, 2002Applicant: Clariant GmbHInventors: Klaus Pollmann, Hendrik Ahrens, Achim Stankowiak
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Patent number: 6426383Abstract: The present invention relates to a novel process for the production of a water soluble polymer dispersion from vinylamide monomers, and, more particularly, polymers formed from N-vinylformamide monomers.Type: GrantFiled: May 28, 1997Date of Patent: July 30, 2002Assignee: Nalco Chemical CompanyInventors: Dodd W. Fong, Manian Ramesh, Anthony G. Sommese
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Publication number: 20020082374Abstract: A process for preparing an aqueous styrene-butadiene polymer dispersion by free-radical aqueous emulsion polymerization of a monomer mixture M comprisingType: ApplicationFiled: September 20, 2001Publication date: June 27, 2002Applicant: BASF AktiengesellschaftInventors: Volker Schaedler, Lambertus Manders, Roland Ettl, Thomas Wirth
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Publication number: 20020061961Abstract: The present invention is to offer a rubber material composition excellent in an abrasion resistance and less to cause heat by friction, and is suitably used to sealing members of rolling devises to be used with grease lubrication under severe circumstances allowing water or dusts to much exist. The rubber material composition is fabricated with carboxylated acrylonitrile-butadiene rubber.Type: ApplicationFiled: September 14, 2001Publication date: May 23, 2002Applicant: NSK LTD.Inventors: Toshikazu Yabe, Toshimi Takajo, Takahiko Uchiyama, Keisuke Yokoyama
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Patent number: 6380353Abstract: Organic compounds containing —CH2—CHR—O— and/or —CH2—CH(OH)— groupings (R=H, C1-C4-alkyl) produce, under the action of free radicals, small amounts of C1-C2-aldehydes, the content of which can be reduced to <1 ppm according to the novel process by adding compounds which can react with the aldehyde groups. The materials containing said groupings include many emulsifiers and protective colloids used in polymer chemistry, such as polyethylene glycols, polyvinyl alcohols or ethoxylation products of long-chain alcohols, phenols or amines. The process is of particular importance for the treatment of polymer dispersions which have been prepared by free-radical polymerization of monomers in the presence of such emulsifiers or protective colloids, and permits the preparation of aldehyde-free polymer dispersions and their use for sanitary and hygiene articles.Type: GrantFiled: September 29, 2000Date of Patent: April 30, 2002Assignee: BASF AktiengesellschaftInventors: Robert Rupaner, Martin Scholtissek, Karl-Heinz Schumacher, Maximilian Angel
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Patent number: 6372675Abstract: A nonwoven fabric of chemically bonded non-cellulose fibers having improved wet tensile properties. The fabric includes a random arrangement of non-cellulose fibers and an essentially formaldehyde free latex binder. The latex binder contains at least about 6.7 wt. % vinyl cyanide monomer to bond the non-cellulose fibers and form a nonwoven fabric having at least a 10% improvement in wet tensile strength over a comparable nonwoven fabric having a latex binder essentially free of formaldehyde and free of vinyl cyanide monomer in the monomeric mixture.Type: GrantFiled: October 4, 1999Date of Patent: April 16, 2002Assignee: Omnova Solutins Inc.Inventor: David F. Diehl
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Publication number: 20020022699Abstract: A method for residual monomer diminution by which a residual monomer is speedily removed from an N-vinyl compound polymer or the like without posing a problem such as an increase in ash content; and a process for producing an N-vinyl compound polymer solution or powder which has a regulated pH and is free from a decrease in pH with time.Type: ApplicationFiled: August 3, 2001Publication date: February 21, 2002Applicant: NIPPON SHOKUBAI CO., LTD.Inventors: Toshiaki Kuriyama, Yasuko Inui
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Publication number: 20020010261Abstract: The polymer matrix material includes a polymerization product of one or more monomers selected from the group of water-soluble, ethylenically-unsaturated acids and acid derivatives, and a crosslinking agent. A quantity of water is used for polymerization, such that the polymer material is swelled to a defined volume upon curing. Optionally, a water-soluble or water-swellable polymer and/or a chemical polymerization initiator.Type: ApplicationFiled: August 30, 2001Publication date: January 24, 2002Inventors: Robert W. Callahan, Mark G. Stevens, Muguo Chen
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Patent number: 6339117Abstract: The present invention relates to polymers whitened with optical brighteners obtained by (a) emulsion polymerization of acrylonitrile with or without a comonomer in the presence or absence of a graftable substrate, and (b) addition of an optical brightener before, during, or after the emulsion polymerization.Type: GrantFiled: February 28, 2000Date of Patent: January 15, 2002Assignee: Bayer AktiengesellschaftInventors: Udo Eckstein, Siegfried Korte, Ulrich Feldhues, Hans-Peter Geiger, Bernhard Hunke, Thomas Roick, Günter Sackmann
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Publication number: 20010044502Abstract: The present invention involves a method of making a multiblock copolymer containing two or more types of sequences of derivatives of acrylic acid with at least one derivative being acrylic acid salt and at least one being acrylamide.Type: ApplicationFiled: April 19, 2001Publication date: November 22, 2001Applicant: Replication Medical, Inc.Inventors: Vladimir A. Stoy, Petr Stehlicek, Zdena Kozlova, Tomas Drunecky
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Patent number: 6262141Abstract: Methods of preparing an acrylic polymer according to the present invention comprise the steps of: forming a gelled polymer by polymerizing a mixture containing an acrylic monomer and a photoinitiator; comminuting the gelled polymer to produce gel particles; and irradiating the gel particles with light to decompose the photoinitiator, simultaneously with, or after, the step of comminuting. The gel particles may be irradiated with UV light while they are being dried in a fluid-bed dryer.Type: GrantFiled: October 6, 1999Date of Patent: July 17, 2001Assignee: Cytec Technology CorporationInventors: Douglas A. Cywar, Roderick G. Ryles, Melvyn Holdsworth
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Patent number: 6248815Abstract: The present invention relates to a water based laminating adhesive composition and a method of using thereof. More particularly, the invention relates to a water-based laminating adhesive comprising: a first component comprising at least one aqueous vinyl polymer dispersion (A) comprising the reaction product of i) at least one ethylenically unsaturated monomer; ii) at least one free radical initiator; and iii) optionally, at least one ethylenically unsaturated oligomer; and b) a second component comprising at least one water dispersible polyfunctional aziridine crosslinking agent (B). The adhesive optionally comprises at least one aqueous polyurethane polymer dispersion (C). Improved bonded properties of dry laminated flexible film substrates such as polyolefin, polyester and polyamide, as well as cellophane, metals or paper are obtained.Type: GrantFiled: June 4, 1998Date of Patent: June 19, 2001Assignee: H. B. Fuller Licensing & Financing, Inc.Inventors: George A. Papsin, Thomas E. Rolando, Peter A. Voss
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Patent number: 6232406Abstract: The present invention is a method of making acrylonitrile copolymers having multi block structure comprising acrylic acid, acryl amids and acrylamidine hydrophilic groups in hydrophilic blocks and residual nitrile groups in hydrophobic blocks, by partial hydrolysis of polyacrylonitrile to a predetermined hydrolysis conversion at which the hydrolysis is self terminating by a process that improves quality and reduces product heterogeneity.Type: GrantFiled: September 30, 1999Date of Patent: May 15, 2001Assignee: Replication Medical Inc.Inventor: Vladimir A. Stoy
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Patent number: 6153690Abstract: The present invention is directed to a method of producing a waterborne isocyanate-modified acrylic polymer. The method provides for reacting a compound having at least two-isocyanate functionalities with an isocyanate-reactive polymer to produce the isocyanate-modified acrylic polymer of the present invention having extended shelf stability and solvent resistance.Type: GrantFiled: May 29, 1996Date of Patent: November 28, 2000Assignee: Rohm and Haas CompanyInventors: Gary Robert Larson, Kurt Arthur Wood
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Patent number: 6136918Abstract: A rubber latex with its particles grown through cohesion by adding 100 weight parts of (B) a rubber latex (solid), 0.1-15 weight parts (solid) of (A) an acid group-containing latex having an average particle size of 50-500 nm prepared by polymerizing a monomer mixture comprising (a), (b), (c) and (d) [wherein (a)+(b)+(c)+(d)=100 weight %]: (a) 5-25 weight % of at least one of unsaturated acids selected from the group consisting of acrylic acid, methacrylic acid, itaconic acid and crotonic acid, (b) 20-95 weight % of at least one of alkyl methacrylates with its alkyl group 1-12 in carbon number, (c) 0-30 weight % of at least one of alkyl acrylates with its alkyl group 1-12 in carbon number, (d) 0-40 weight % of at least one selected from the group consisting of aromatic vinyls, compounds having at least two polymerizable functional groups in a molecule and vinyl cyanides, copolymerizable with the aforementioned (a), (b) and (c) is provided.Type: GrantFiled: April 30, 1998Date of Patent: October 24, 2000Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Ikuhiro Mishima, Norito Doi, Youichi Matsumura, Shigemi Matsumoto, Shinobu Ochikoshi, Kazuhito Wada, Hiroki Yoshino
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Patent number: 6133368Abstract: A dispersant system useful in the formation of dispersions of water soluble polymers is disclosed. The dispersant system comprises two polymers, the first being a copolymer of diallyldimethyl ammonium chloride with a C.sub.6 to C.sub.20 quaternary ammonium salt of a monomer selected the from the group consisting of dialkylaminoalkylacrylates, dialkylaminoalkylmethacrylates, dialkylaminoalkylacrylamides, and dialkylaminoalky (meth) acrylamides as well as certain alkyl esters of acrylic acid. The second polymer is a water soluble cationic polymer composed of at least 20 mole percent of a cationic monomer represented by the formula: ##STR1## where R.sub.4 is either hydrogen or CH.sub.3 ; R.sub.5 and R.sub.6 are each an alkyl group having 1 to 2 carbon atoms; R.sub.7 is a hydrogen atom or an alkyl group having 1 to 2 carbon atoms; A.sub.2 is either an oxygen atom or NH; B.sub.2 is either an alkylene group having 2 to 4 carbon atoms or a hydroxypropylene group and X.sub.2.sup.- is an anionic counterion.Type: GrantFiled: December 9, 1993Date of Patent: October 17, 2000Assignee: Nalco Chemical CompanyInventors: John R. Hurlock, Manian Ramesh
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Patent number: 6103839Abstract: A continuous free radical polymerization process for the preparation of water-soluble copolymers from water-soluble monomers for further processing to dry polymers is disclosed. The process allows efficient polymerization of the monomers in aqueous solution in the presence of a free radical catalyst through backmixing. Water-soluble polymers with molecular weights of from about 3,000-30,000,000 and preferably from about 500,000-10,000,000 are obtained utilizing this process.Type: GrantFiled: May 11, 1998Date of Patent: August 15, 2000Assignee: Nalco Chemical CompanyInventors: Mayur Patel, Cheng-Sung Huang, Robert W. Reese, Jr., Jeffrey R. Cramm, Paul J. Harris
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Patent number: 6080804Abstract: Processes for producing free flowing, Mannich and glyoxal polyacrylamide water soluble and water-swellable granules from a water-in-oil emulsion and compositions comprising such dry polymer granules are disclosed.Type: GrantFiled: June 7, 1995Date of Patent: June 27, 2000Assignee: Cytec Technology Corp.Inventors: William Bloor Davies, Gary Kaui Lani Miller
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Patent number: 6075090Abstract: The present invention is a method of making a stable colloidal non-aqueous wax particle dispersion. The method includes the steps of forming a mixture of a first vinyl monomer of a polymerizable mono-alpha, beta-ethylenically unsaturated compound free of ionic charge groups and capable of addition polymerization and a second vinyl monomer capable of addition polymerization and wax particle in a aqueous medum. The mixture is polymerized using an azo or diazo initiator to form an aqueous dispersion of composite wax particles. The wax particles are redispersed in an organic solvent.Type: GrantFiled: December 28, 1998Date of Patent: June 13, 2000Assignee: Eastman Kodak CompanyInventors: Yongcai Wang, James L. Bello, David E. Decker, Dennis E. Smith
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Patent number: 6037406Abstract: Inverse microemulsions having a Standard Viscosity of at least about 3.3 cps are disclosed which comprise an aqueous phase of dispersed micelles containing water and an (alk)acrylamide-based polymer substituted with at least 1 mole percent of quaternized tertiary aminomethyl groups, wherein said microemulsion is derived from a microemulsion containing greater than about 20 percent, by weight, and less than about 40 percent, by weight, of aqueous phase polymer solids, based on said microemulsion. A method of making said microemulsions and use thereof to dewater dispersions of suspended solids are also taught.Type: GrantFiled: June 4, 1996Date of Patent: March 14, 2000Assignee: Cytec Technology Corp.Inventor: Michael Stephen Ryan
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Patent number: 6025432Abstract: Inverse microemulsions are disclosed wherein the dispersed micelles containing water and an (alk)acrylamide-based polymer substituted with at least one mole percent of quaternized tertiary aminomethyl groups i.e. the aqueous phase, contain from about 20 percent to about 40 percent, by weight, of polymer solids and the microemulsion has a Standard Viscosity of at least about 3.3 cps. A method of making said microemulsions and use thereof to dewater dispersions of suspended solids are also taught.Type: GrantFiled: July 23, 1997Date of Patent: February 15, 2000Assignee: Cytec Technology Corp.Inventor: Michael Stephen Ryan
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Patent number: 5962584Abstract: The present invention provides waterborne reactive functional latex compositions having pendant reactive functional groups. The reactive functional latex is formed by free-radical emulsion polymerization of monoethylenically unsaturated monomers containing at least one amide functionality with other copolymerizable monoethylenically unsaturated monomers. The amide functionality on the latex polymer is transformed into an isocyanate and/or amine functionality by addition of an alkali hypohalide. The isocyanate and/or amine groups are subsequently react with a multifunctional additive having at least one functional group suitable for reaction with an isocyanate or amine group and attachment of the additive to the polymer particle, and another functional group that remains pendant.Type: GrantFiled: August 7, 1997Date of Patent: October 5, 1999Assignee: Eastman Chemical CompanyInventor: Shawn Marie Dougherty
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Patent number: 5962284Abstract: Acrylamidase enzymes are provided which have acrylamidase activity at pH 4.0 which is at least 50% of their acrylamidase activity at pH 7.0. Such enzymes can be produced by the novel microorganisms Rhodococcus strains NCIMB 40889 and NCIMB 40755. Such enzymes and microorganisms can be used for reducing free acrylamide in polyacrylamides which are produced at low pH and in particular cationic and substantially non-ionic polyacrylamides.Type: GrantFiled: August 7, 1998Date of Patent: October 5, 1999Assignee: Ciba Specialty Chemicals Water Treatments LimitedInventors: Jonathan Hughes, Yvonne Christine Armitage
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Patent number: 5942573Abstract: Provided by this invention are an acrylamide polymer which has a weight-average molecular weight (a) of from 1,500,000 to 10,000,000 and a weight-average inertial radius (b) of from 30 to 150 nm, the ratio (b)/(a) of the weight-average inertial radius (b) to the weight-average molecular weight (a) being 0.00004 or smaller; and an aqueous solution of an acrylamide polymer which solution has a polymer concentration ranging from 22 to 60%, a Brookfield viscosity at 25.degree. C. of 50,000 cps or smaller and a weight-average molecular weight of from 500,000 to 10,000,000. They are useful as paper strength agents.Type: GrantFiled: June 24, 1997Date of Patent: August 24, 1999Assignee: Mitsui Chemicals, Inc.Inventors: Hirotoshi Doki, Hitoshi Ishigaki, Toshiki Oyanagi, Tsugio Matsubara, Shigeo Watanabe
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Patent number: 5925714Abstract: Improved water soluble vinyl addition polymers for use as thickening and flocculating agents in water purification treatment, paper manufacture and waste water treatment are prepared using alkoxylated castor oil as an activation release agent. The release agent is biodegradable thereby making the overall product process more environmentally friendly.Type: GrantFiled: March 4, 1994Date of Patent: July 20, 1999Assignee: SNF S.A.Inventors: Eric H. Larson, Manilal Dahanayake, William R. Busler
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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: 5853636Abstract: A fiber treating composition and the emulsion of the composition, containing poly-N-vinylalkylamides and/or copolymers thereof, and polyols and/or derivatives thereof; and a synthetic filament production process with melt-spinning at 1,000 m/min or more spinning speed, wherein the above fiber treating composition is applied.Type: GrantFiled: July 29, 1997Date of Patent: December 29, 1998Assignee: Matsumoto Yushi-Seiyaku Co., Ltd.Inventors: Takeshi Munekiyo, Tamotsu Matsunaga, Hirofumi Ishida
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Patent number: 5852109Abstract: Solid poly-.alpha.-amino acid particles are obtained by preparing an oil-in-water emulsion from water and an organic solvent having a water solubility of 10 g/100 ml or less, and polymerizing an .alpha.-amino acid-N-carboxy anhydride by emulsion polymerization in the oil-in-water emulsion, or by polymerizing an .alpha.-amino acid-N-carboxy anhydride in water in the presence of an emulsifier and an initiator. Hollow particles can be obtained by adding a poor solvent for the poly-.alpha.-amino acid to the poly-.alpha.-amino acid particles and removing the solvents. These poly-.alpha.-amino acid particles are useful as a novel raw materials for coating on papers, rubbers and fibers, for encapsulating cosmetics, drugs, agricultural chemicals and fertilizers, and as particles for diagnostic reagents.Type: GrantFiled: September 11, 1995Date of Patent: December 22, 1998Assignee: JSR CorporationInventors: Kenya Makino, Seiji Fukuhara, Kyoko Kuroda, Toshio Hayashi
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Patent number: 5804651Abstract: This invention discloses heat sensitizable latices and a process for synthesizing heat sensitizable latices. This invention more specifically discloses a process for preparing a heat sensitizable latex which comprises the steps of (1) polymerizing at least one conjugated diolefin monomer in an aqueous polymerization medium by free radical polymerization in the presence of an emulsifier system which is comprised of a fatty ethoxylated monomaleate and optionally an alkyl monomaleate to produce a first latex composition; and (2) adding a water soluble organically modified polysiloxane to the first latex composition to produce the heat sensitizable latex. The present invention further discloses a heat sensitizable latex composition which is comprised of (1) at least one rubbery polymer; (2) water; (3) an emulsifier system which is comprised of a fatty ethoxylated monomaleate and optionally an alkyl monomaleate; and (4) at least one water-soluble organically modified polysiloxane.Type: GrantFiled: March 24, 1998Date of Patent: September 8, 1998Assignee: The Goodyear Tire & Rubber CompanyInventors: Fabienne Arlette Francoise Rouviere, Pascale Francine Jeanne Muller
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Patent number: 5800714Abstract: Water recovered from the polymerization of vinyl monomers can be treated to remove or deactivate chain transfer agents present in the water allowing resuse in polymerization processes. The water recovered from a vinyl polymerization reaction is contacted with a cation exchange resin in the hydrogen form prior to recycle, or may be acidified and then contacted with an anion exchange resin in the hydroxide form.Type: GrantFiled: October 21, 1996Date of Patent: September 1, 1998Assignee: Nalco Chemical CompanyInventors: Thomas M. Miller, Bhasker B. Dave, W. Hugh Goodman
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Patent number: 5780544Abstract: This invention discloses heat sensitizable latices and a process for synthesizing heat sensitizable latices. This invention more specifically discloses a process for preparing a heat sensitizable latex which comprises the steps of (1) polymerizing at least one conjugated diolefin monomer in an aqueous polymerization medium by free radical polymerization in the presence of an emulsifier system which is comprised of a fatty ethoxylated monomaleate and optionally an alkyl monomaleate to produce a first latex composition; and (2) adding a water soluble organically modified polysiloxane to the first latex composition to produce the heat sensitizable latex. The present invention further discloses a heat sensitizable latex composition which is comprised of (1) at least one rubbery polymer; (2) water; (3) an emulsifier system which is comprised of a fatty ethoxylated monomaleate and optionally an alkyl monomaleate; and (4) at least one water-soluble organically modified polysiloxane.Type: GrantFiled: March 5, 1997Date of Patent: July 14, 1998Assignee: The Goodyear Tire & Rubber CompanyInventors: Fabienne Arlette Francoise Rouviere, Pascale Francine Jeanne Muller
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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: 5723548Abstract: Mannich (alk)acrylamide microparticles are produced at high solids contents without a significant increase in bulk viscosity by inverse microemulsion polymerization and provide superior dewatering characteristics.Type: GrantFiled: October 23, 1996Date of Patent: March 3, 1998Assignee: Cytec Technology Corp.Inventors: Joseph J. Kozakiewicz, Sun-Yi Huang
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Patent number: 5698629Abstract: A process for the preparation of a water-in-oil type polymer emulsion which comprises polymerizing an acrylamide-containing monomer in a water-in-oil type emulsion. The acrylamide is prepared by hydrating acrylonitrile in the presence of a catalytic amount of nitrilehydratase.Type: GrantFiled: August 16, 1996Date of Patent: December 16, 1997Assignee: Nitto Chemical Industry Co., Ltd.Inventors: Susumu Seki, Wataru Fujii
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Patent number: 5696185Abstract: Aqueous dispersions of polymers which have a high glass transition temperature and a low average molecular weight and contain a specific amount of methacrylic acid as polymerized units are suitable, in liquid or dried form, as additives for improving the flow behavior of cement-containing mineral building materials having binding properties.Type: GrantFiled: July 17, 1996Date of Patent: December 9, 1997Assignee: BASF AktiengesellschaftInventors: Wilhelm Friedrich Beckerle, Rolf Petri, Bernhard Dotzauer, Manfred Schwartz, Maximilian Angel
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Patent number: 5629377Abstract: A water-absorbent resin particles that exhibits a centrifuged absorption capacity of 26 g/g or greater, an absorption under load of 24 g/g or greater at 0.6 psi load. Other aspects of the invention are processes for the preparation of such water-absorbent resin particles which comprise the inclusion of chlorine or bromine containing oxidizing agent followed by the heat-treatment to produce particles with superior centrifuged absorption capacity in combination with high absorption under load at high load, and acceptable levels of residuals. These water-absorbent resin particles provide superior performance when incorporated into absorbent structures.Type: GrantFiled: August 11, 1995Date of Patent: May 13, 1997Assignee: The Dow Chemical CompanyInventors: Josef H. Burgert, Stephen B. Christensen, Herbert A. Gartner, Fredric L. Buchholz, Thomas C. Johnson, Andrew T. Graham
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Patent number: 5589522Abstract: The invention relates to an aqueous ink composition for use in ink jet printers comprising an aqueous carrier, a pigment, and, preferably, a graft polymer having a polyacrylic acid backbone and hydrophobic side chains.Type: GrantFiled: December 21, 1994Date of Patent: December 31, 1996Assignee: Lexmark International, Inc.Inventors: Bradley L. Beach, James F. Feeman, Anna M. Pearson, Jing X. Sun
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Patent number: 5545688Abstract: A process is disclosed whereby an acrylamide homopolymer is prepared in microemulsion form whereby the microemulsion is clear and stable and the polymer solids content is at least 15%, by weight, the process being conducted in the absence of extraneously added salts of saturated, aliphatic, monocarboxylic acids.Type: GrantFiled: May 24, 1995Date of Patent: August 13, 1996Assignee: Cytec Technology Corp.Inventor: Sun-Yi Huang
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Patent number: 5498648Abstract: Paper size mixtures which are prepared by mixing an aqueous suspension of a digested cationic starch with a finely divided, aqueous polymer dispersion which is the paper size and emulsifying the C.sub.14 -C.sub.22 -alkyldiketene in this mixture at not less than 70.degree. C. are used for engine and surface sizing of the paper.Type: GrantFiled: March 1, 1995Date of Patent: March 12, 1996Assignee: BASF AktiengesellschaftInventors: Arnold de Clercq, Roland Ettl, Carlos A. Goncalves, Lothar Hoehr, Andreas Hohmann, Ulrich Riebeling
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Patent number: RE37037Abstract: Mannich (alk)acrylamide microparticles are produced at high solids contents without a significant increase in bulk viscosity by inverse microemulsion polymerization and provide superior dewatering characteristics.Type: GrantFiled: May 16, 1997Date of Patent: January 30, 2001Assignee: Cytec Technology Corp.Inventors: Joseph J. Kozakiewicz, Sun-Yi Huang