Polyvinyl Alcohol Or Modified Form Thereof Patents (Class 524/503)
  • Patent number: 6762239
    Abstract: This invention relates to aqueous emulsion copolymers comprising from about 2% to about 20% of ethylene, from about 20% to about 78% of vinyl acetate, and from about 20% to about 60% of a functionalized monomer selected from the group consisting of acid containing monomers, nitrogen containing monoolefinically unsaturated monomers, and hydroxyl containing monomers. The present invention also pertains to methods for making the ethylene vinyl acetate aqueous emulsion copolymers containing high concentrations of functionalized monomers and to ethylene vinyl acetate aqueous emulsion copolymers made by the the novel methods.
    Type: Grant
    Filed: November 21, 2000
    Date of Patent: July 13, 2004
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventor: Donald R. Williams
  • Patent number: 6759473
    Abstract: By coating a dip-formed article with a coating agent comprising a polymer latex dispersion-stabilized with a water-soluble high-molecular-weight compound containing an alcoholic hydroxyl group, a coated article having excellent donning and putting off properties and anti-blocking property, and exhibiting greatly reduced fine particles-releasability is obtained.
    Type: Grant
    Filed: May 20, 2002
    Date of Patent: July 6, 2004
    Assignee: Zeon Corporation
    Inventors: Misao Nakamura, Toshihiro Inoue
  • Publication number: 20040127630
    Abstract: The invention relates to a novel polypropylene compound based on halogen-free, flame-resistant filling materials containing magnesium hydroxide, said compound having good extrudability and improved flame protective action.
    Type: Application
    Filed: February 24, 2004
    Publication date: July 1, 2004
    Inventor: Rene Herbiet
  • Patent number: 6749705
    Abstract: Adhesives for bonding paper facings to aerated concrete provide increased manufacturing efficiencies and long term stability of constructs prepared therewith. Adhesives may advantageously be used in the foamed state.
    Type: Grant
    Filed: November 15, 2001
    Date of Patent: June 15, 2004
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Ronald J. Skrzyniarz, Lisa Brown
  • Publication number: 20040110883
    Abstract: The present invention relates to a method of coloring the surface of paper. A method is provided comprising providing a paper substrate; and applying a coloring composition comprising a binder and a coloring agent to form a colored paper, wherein the coloring composition is non-white.
    Type: Application
    Filed: October 7, 2003
    Publication date: June 10, 2004
    Inventors: Dwight J. Pakan, Richard L. Tyte, John Pelletier
  • Patent number: 6740469
    Abstract: Anti-reflective compositions and methods of using these compositions to form circuits are provided. The compositions comprise a polymer dissolved or dispersed in a solvent system. In a preferred embodiment, the polymers of the composition include recurring units having the formula where X is a light-attenuating moiety, M is a metal, and each R is individually selected from the group consisting of hydrogen, alkyls, aryls, alkoxys, and phenoxys. The resulting compositions are spin bowl compatible (i.e., they do not crosslink prior to the bake stages of the microlithographic processes or during storage at room temperature), are wet developable, and have superior optical properties.
    Type: Grant
    Filed: June 25, 2002
    Date of Patent: May 25, 2004
    Assignee: Brewer Science Inc.
    Inventors: Vandana Krishnamurthy, Charles J. Neef, Juliet A. M. Snook
  • Patent number: 6736865
    Abstract: Aqueous dispersions (L) comprising: (a) a wax which is (a1) a carboxyl-containing hydrocarbon wax or a mixture of such waxes or a mixture of (a1) and (a2) at least one unmodified hydrocarbon wax, (b) a (co)poly(meth)acrylamide or (co)poly-(meth)acrylamide mixture which is (b1) at least one macro(co)poly-(meth)acrylamide, which optionally contains carboxyl-containing comonomers, having an average molecular weight {overscore (M)}W=n·106, where n≧10, or a mixture of (b1) and (b2) at least one (co)poly(meth)-acrylamide, which optionally contains carboxyl-containing comonomers, having an average molecular weight {overscore (M)}W<10·106, and (d) a dispersant system consisting of amphoteric, anionic and/or nonionic surfactants, are surprisingly useful as highly effective crease mark inhibitors having an extremely surfacy effect and are also suitable for particularly short liquors, for example in winch becks and jet-dyeing machines.
    Type: Grant
    Filed: December 18, 2000
    Date of Patent: May 18, 2004
    Assignee: Clariant Finance (BVI) Limited
    Inventors: Bernard Danner, Francis Palacin
  • Patent number: 6734232
    Abstract: A composition of matter for surface sizing of paper and other cellulosic products. In particular, the composition is a styrene/acrylic acid ester copolymer latex made by emulsion copolymerization without surfactants.
    Type: Grant
    Filed: March 15, 2002
    Date of Patent: May 11, 2004
    Assignee: Georgia-Pacific Resins, Inc.
    Inventor: Cornel Hagiopol
  • Publication number: 20040082706
    Abstract: The present invention relates to a water resistant polyvinyl acetate aqueous emulsion, which is useful as an adhesive for applying to wood material. The present polyvinyl acetate aqueous emulsion is free of formalin and exhibits excellent water resistance.
    Type: Application
    Filed: June 27, 2003
    Publication date: April 29, 2004
    Applicant: CHANG CHUN PETROCHEMICAL CO., LTD.
    Inventors: Jing-Jin Tsai, Li-Shing Lin, Gan-Dar Fan
  • Publication number: 20040082690
    Abstract: A process for producing an ethylene-vinyl alcohol copolymer resin, including feeding EVOH into an extruder, keeping the temperature of the melting resin in the extruder at 70 to 170° C., adjusting the amount of water in the extruder so that the water content right after being discharged from the extruder is 5 to 40 weight %, and extruding out the EVOH resin. The extruded EVOH resin is cut into EVOH pellets. Thereby, it is possible to obtain resin pellets in which no spherocrystals are observed in the center of the cross section of the resin when the cross section is observed by the use of a polarization microscope, or no lubricant is contained in the resin pellets, and the angle of repose is 23° or less when the resin pellets are laminated.
    Type: Application
    Filed: December 8, 2003
    Publication date: April 29, 2004
    Applicant: KURARAY CO. LTD
    Inventors: Takaharu Kawahara, Hiroshi Kawai, Toshio Tuboi, Yukihiro Ohara, Masao Hikasa
  • Publication number: 20040082705
    Abstract: The present invention relates to a one-pot water-resistant polyvinyl acetate copolymer aqueous emulsion and its preparation. The one-pot water-resistant polyvinyl acetate copolymer aqueous emulsion of the present invention is prepared from emulsion co-polymerization of vinyl acetate monomer and an unsaturated functional silicon-containing monomer at atmospheric pressure to prepare a one-pot self-cross-linkable emulsion.
    Type: Application
    Filed: June 27, 2003
    Publication date: April 29, 2004
    Applicant: CHANG CHUN PETROCHEMICAL CO., LTD.
    Inventors: Jing-Jin Tsai, Li-Shing Lin, Gan-Dar Fan
  • Patent number: 6727305
    Abstract: A filler-containing an organic polymer dispersion is provided. The organic polymer of the dispersion is polymerized in the presence of particles of at least one filler. The ratio of the particle size of the filler particles to the particle size of the polymer particles is in the range of from 1.1:1 to 20:1.
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: April 27, 2004
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventor: Roberto Pavez Aranguiz
  • Patent number: 6723820
    Abstract: Solvent based poly(urethane/urea) resins suitable for formulating flexographic and gravure laminating printing ink and coating compositions formed from a poly(urethane) prepolymer solution made from a blend of polymeric diols and diols reacted with diisocyanates and then with diamine in an organic solvent. The resin is prepared by adding the poly(urethane) prepolymer solution at a controlled rate to the diamine in a organic solvent which allows a resin solution to be formed, which may be used in the formulation of laminating printing ink and coating compositions without the need for adjuvants, grinding in polyvinyl butyral or blending with nitrocellulose base.
    Type: Grant
    Filed: November 13, 2000
    Date of Patent: April 20, 2004
    Assignee: Sun Chemical Corporation
    Inventors: Ralph Arcurio, Mark Rocco, David J. Slavinski, Mark Schneider
  • Patent number: 6723778
    Abstract: An aqueous composition that includes (A) a butadiene polymer latex that is prepared by an emulsion polymerization in the presence of a styrene sulfonate stabilizer and (B) a phenolic resin. A preferred aqueous butadiene polymer latex is one that is prepared by emulsion polymerization of at least 60 weight percent dichlorobutadiene monomer (based on the amount of total monomers used to form the butadiene polymer), in the presence of a styrene sulfonate stabilizer.
    Type: Grant
    Filed: March 20, 2002
    Date of Patent: April 20, 2004
    Assignee: Lord Corporation
    Inventors: Helmut W. Kucera, Thomas Rizzo
  • Publication number: 20040072940
    Abstract: The present invention relates to a process for synthesizing a particulate copolymer comprising: providing a reaction mixture comprising a reaction medium, a polymerization stabilizer, a water-insoluble ethylenically unsaturated monomer and an ethylenically unsaturated monomer containing hydrophilic functionality, said reaction mixture having a viscosity value of at least 10 cps measured at 40° C., and polymerizing the water-insoluble ethylenically unsaturated monomer and the ethylenically unsaturated monomer containing hydrophilic functionality. The polymerization reaction is preferably conducted at a temperature lower than 100° C. and activated by a polymerization catalyst. The resulting particulate copolymer dispersion comprises copolymer particles showing a weight average diameter size in the range of microns and absence of defects, such as coagulant or agglomerates.
    Type: Application
    Filed: September 26, 2003
    Publication date: April 15, 2004
    Applicant: Ferrania, S.p.A., Recordation
    Inventor: Paola Franceschini
  • Patent number: 6720371
    Abstract: A water repellent and oil resistant composition capable of imparting excellent water repellency and oil resistance to paper even under a condition of drying at a low temperature for a short time, is provided. The composition comprising a fluorocopolymer (A) obtained by polymerizing a polyfluoroalkyl group-containing (meth)acrylate, vinylidene chloride and a compound of the formula [CH2═C(R)COO—CH2—CH(OH)CH2N+(CH3)3·X− (R: a hydrogen atom or a methyl group, and X−: a counter ion)] or the like by means of a lipophilic polymerization initiator (E) having a solubility of less than 3 g in 100 g of water, a non-fluorine surfactant (B), a medium (C) and a water-soluble polymer (D) (a polyacrylamide, a polyvinyl alcohol or starch).
    Type: Grant
    Filed: June 10, 2002
    Date of Patent: April 13, 2004
    Assignee: Asahi Glass Company, Limited
    Inventors: Shoji Furuta, Ryuji Seki, Hiroshi Funaki
  • Patent number: 6716941
    Abstract: The present invention is directed to an ethylene-vinyl acetate dispersion and a process for making the dispersion by polymerizing a monomer mixture having vinyl acetate and ethylene in a batch process, in the presence of a stabilizing system of polyvinyl alcohol and without added surfactants, to form an ethylene-vinyl acetate polymer dispersion. The copolymer dispersion has a solids level of greater than 65 percent by weight, and a viscosity of less than 5000 mPa·s when measured at 65 percent solids at 25° C. The dispersion can be dried to form a redispersible powder. Both the dispersion and powder are useful in adhesive and coating formulations.
    Type: Grant
    Filed: July 27, 2001
    Date of Patent: April 6, 2004
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: John C. H. Kerr, Alistair J. McLennan, Robert N. Mitchell, Caroline S. Pattenden
  • Patent number: 6713550
    Abstract: A coating composition for an ink jet recording medium comprises an aqueous suspension of binder, a cationic fixing agent, an absorptive pigment, and a sizing agent. The coating composition combines solids content of greater than 30% with good runnability. The composition may preferably be dispersed at pH values in the range of 4.5 to 7.0. The pigment is preferably a mixture of 50% or more silica gel having a pore volume of 0.5-2.0 cc/g, and 10% or more alumina or alumina hydrate. A method for making down a composition has sequential steps of dispersing a binder in water, adding a cationic fixing agent, dispersing an alumina and an absorptive silica, adding a fluorescent whitening agent, cooling the composition, and finally adding a sizing agent.
    Type: Grant
    Filed: August 27, 2001
    Date of Patent: March 30, 2004
    Assignee: Stora Enso North America Corporation
    Inventors: Leonard J. Schliesman, Leland O. Tritz, Karen K. Spreda
  • Patent number: 6713119
    Abstract: A coating for a prosthesis, for example a stent, and a composition for forming the coating is disclosed. The coating can serve as a primer, allowing substances, such as polymers, to be effectively secured by the prosthesis. Alternatively, the coating can serve as a reservoir, allowing for the local and sustained release of a therapeutic substance to biological tissues. The composition can be formed from an ethylene vinyl alcohol copolymer and a dimethylsulfoxide solvent, with or without a therapeutic substance. Alternatively, the composition can be formed from an ethylene vinyl alcohol copolymer, a dimethylsulfoxide solvent, and a wetting fluid, with or without a therapeutic substance. The composition is applied to a surface of the prosthesis and essentially all of the dimethylsulfoxide solvent or dimethylsulfoxide solvent/wetting fluid is removed or allowed to evaporate to form the coating.
    Type: Grant
    Filed: December 23, 1999
    Date of Patent: March 30, 2004
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Syed F. A. Hossainy, Deborra Sanders-Millare, Judy A. Guruwaiya, Daniel A. Castro, Sameer Harish, Steven Z. Wu
  • Publication number: 20040059044
    Abstract: The invention provides a method for preparing an oligomeric dye by reacting a first component oligomer, having a carbon-carbon backbone, comprising a plurality of polymerized monomer units comprising pendant reactive nucleophilic or electrophilic functional groups; and a dye component having a co-reactive functional group. These oligomeric dyes are suitable for use as additives to impart coloration or fluorescence to thermoplastic polymers, particularly olefinic polymers. The oligomeric dyes of the present invention advantageously are compatible in polymers where conventional dyes often have poor compatibility or solubility.
    Type: Application
    Filed: September 12, 2002
    Publication date: March 25, 2004
    Applicant: 3M Innovative Properties Company
    Inventors: David B. Olson, David M. Burns, Lee A. Pavelka
  • Patent number: 6706805
    Abstract: Building materials containing copolymers derived from vinyl ester, (meth)acrylic ester and optionally ethylene comonomers, stabilized with a polyvinylalcohol protective colloid, as their aqueous dispersions or as redispersible polymer powders which are redispersible in water, exhibit improved processing properties and set properties. The copolymers are obtained by emulsion or suspension copolymerization in an at least two step process wherein a) the vinyl ester component is polymerized, optionally with ethylene and further copolymerizable comonomers, to a conversion of from 90 to 100% by weight in a first step, and b) the ester(s) of (meth)acrylic acid are subsequently added and polymerized in a second step. The copolymer dispersion obtained may be dried to form a redispersible copolymer powder.
    Type: Grant
    Filed: May 22, 2002
    Date of Patent: March 16, 2004
    Assignee: Wacker Polymer Systems, GmbH & Co. KG
    Inventor: Hans-Peter Weitzel
  • Patent number: 6703440
    Abstract: Synthetic roofing products such as simulated slate and clay tile shingles, and other products, such as flower pots, floor coverings, plastic pallets and the like are compression molded from a mixture of ultra low density polyethylene binder and a filler which may comprise recycled rubber products such as E.D.P.M (ethylene propylene diene monomer) and S.B.R. (styrene butadiene rubber). Colorants may be added to the mixture prior to final molding. Many of the products, especially synthetic shingles, are less expensive, easier to handle, and more durable than the slate or clay tile shingle product simulated.
    Type: Grant
    Filed: April 21, 2003
    Date of Patent: March 9, 2004
    Inventor: Gerald Edson
  • Patent number: 6699442
    Abstract: A method and apparatus for initiating a rapid and long-lasting pH change to a pH dependent polymer or other pH driven reactant is provided by a pH jump molecule in solution. Visible light is used to excite the pH jump molecule. The attendant pH change occurs rapidly (in nanoseconds) and can be maintained by continuous wave light or by an appropriately pulsed light. Heat resulting from the light activation is efficiently discharged by radiative decay through room temperature phosphorescence lifetimes existing on the order of milliseconds.
    Type: Grant
    Filed: May 12, 2000
    Date of Patent: March 2, 2004
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Carol A. Becker
  • Publication number: 20040030033
    Abstract: A film coating composition suitable for use in coating pharmaceutical formulations to provide modified release comprising a dispersion which includes: a) an acrylic polymer, b) a vinyl acetate polymer, and c) a water-containing liquid. The film coat is useful for the achievement of modified release from pharmaceutical formulations such as tablets, pellets, etc.
    Type: Application
    Filed: June 16, 2003
    Publication date: February 12, 2004
    Inventors: Jan-Erick Lofroth, Staffan Schantz, Anders Welin, Lars Johan Pontus de Verdier Hjarstam
  • Patent number: 6689433
    Abstract: Ink-receiving print media products capable of producing high quality printed images which are light-fast, humid-fast, have low coalescence (graininess) levels, and are characterized by other beneficial attributes. The print media products have at least one ink-receiving layer supported by a substrate. The ink-receiving layer includes a binder blend designed to achieve the aforementioned goals, namely, gelatin, a poly(vinyl alcohol-polyethylene oxide) copolymer, and a poly((styrene)-(n-butyl acrylate)-(methyl methacrylate)-(2-(tert-butylamino) ethyl methacrylate)) copolymer. One or more optional pigments and/or additional binders can also be included within the ink-receiving layer. The ink-receiving layer may optionally be employed in combination with one or more additional material layers thereover or thereunder which can contain, for example, one or more pigments and/or binders.
    Type: Grant
    Filed: May 6, 2002
    Date of Patent: February 10, 2004
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Bor-Jiunn Niu, Stefan Schuttel, Meinrad Schaer
  • Patent number: 6686405
    Abstract: A process for producing an ethylene-vinyl alcohol copolymer resin, including feeding EVOH into an extruder, keeping the temperature of the melting resin in the extruder at 70 to 170° C., adjusting the amount of water in the extruder so that the water content right after being discharged from the extruder is 5 to 40 weight %, and extruding out the EVOH resin. The extruded EVOH resin is cut into EVOH pellets. Thereby, it is possible to obtain resin pellets in which no spherocrystals are observed in the center of the cross section of the resin when the cross section is observed by the use of a polarization microscope, or no lubricant is contained in the resin pellets, and the angle of repose is 23° or less when the resin pellets are laminated.
    Type: Grant
    Filed: July 20, 2000
    Date of Patent: February 3, 2004
    Assignee: Kuraray Co., Ltd.
    Inventors: Takaharu Kawahara, Hiroshi Kawai, Toshio Tuboi, Yukihiro Ohara, Masao Hikasa
  • Patent number: 6673854
    Abstract: The present invention is directed to a vinyl acetate-ethylene polymer dispersion containing a vinyl acetate-ethylene polymer, a phosphate-functional surfactant, and a protective colloid. The invention is also directed to an aqueous coating composition having at least 65 percent by volume of pigment, on a dry solids volume basis and an amount effective to produce good scrub resistance of up to 25 percent by weight of the vinyl acetate-ethylene binder.
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: January 6, 2004
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Dorian Pierre, Stephen John Baines, Keith Charles Allen
  • Patent number: 6673862
    Abstract: The present invention provides for the production of stable aqueous dispersions of vinyl acetate-ethylene copolymers, preferably at high solids, i.e., greater than 65 wt %, preferably >70% which are useful as adhesives. The vinyl acetate-ethylene copolymer is comprised of polymerized units of vinyl acetate and ethylene in approximately 60-95 wt % and 5-40 wt % respectively. The copolymers are prepared by the emulsion copolymerization of vinyl acetate and ethylene monomers in the presence of a stabilizing system consisting essentially of (1) a poly(vinyl alcohol) which is 75-99+mole % hydrolyzed and has an average degree of polymerization ranging from 100-2200 and (2) a polyethylene glycol having a number average molecular weight of from 200 to 20,000.
    Type: Grant
    Filed: December 10, 1999
    Date of Patent: January 6, 2004
    Assignee: Air Products Polymers, L.P.
    Inventor: Carrington Duane Smith
  • Publication number: 20030236339
    Abstract: Bubble solutions containing invert sugar are disclosed. The bubbles are long-lasting bubbles which can be produced by children at play. Components in the bubble formulation may include a water soluble polymer, invert sugar, surfactants, water, and vegetable syrup.
    Type: Application
    Filed: February 11, 2003
    Publication date: December 25, 2003
    Applicant: EdiZONE, LC
    Inventor: Tony M. Pearce
  • Publication number: 20030236326
    Abstract: The use of optical brighteners of the formula (II): 1
    Type: Application
    Filed: April 16, 2003
    Publication date: December 25, 2003
    Inventors: Karl-Heinz Drenker, Heinz Giesecke, Bernhard Hunke, Bernd Hauschel, Reiner Gottschalk, Claudia Hundertmark
  • Patent number: 6667352
    Abstract: The invention relates to protective colloid-stabilized copolymerizate latex particles with a heterogeneous morphology based on a vinyl acetate-ethylene copolymerizate and optionally further monomers, the latex particles having an ethylene content of less than 30 wt. %, based oh the total monomer quantity, comprising an outer phase with a polymer of vinyl acetate and approximately 0 to 40 wt. % ethylene, based on the monomers of the outer phase, and an inner phase with a polymer of vinyl acetate and approximately 0 to 40 wt. % ethylene; based on the monomers of the inner phase and in which at least one of the two phases contains ethylene. The invention also relates to a process for the preparation of acqueous dispersions of copolymerizate latex particles with heterogeneous morphology and the use thereof. The invention is characterized in that the heterogeneous morphology can be obtained in a planned manner, i.e.
    Type: Grant
    Filed: July 26, 2001
    Date of Patent: December 23, 2003
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Jos M. H. Kusters, Robert Koelliker, Florin I. Vlad, Wendy J. Cook
  • Publication number: 20030232911
    Abstract: A ceramic injection molding composition consisting of a three component binder system with a ceramic powder in which the binder system has good wettability towards the ceramic powder was disclosed. The binder system includes a first component soluble in water, a second component which is a water emulsified acrylic resin and a third component as a lubricant. A homogeneous powder binder blend can be achieved during low temperature mixing of the powder. As the binder system has strong affinity towards the ceramic powder and easily mixed with ceramic powder it eliminates the use of a high temperature mixing which involves difficult instruments. The binder system was successfully applied to a wide range of ceramic powders. The composition of the binder system depends on the powder and its density. Addition of water to powder binder mixture enhances the dispersion of powder into binder.
    Type: Application
    Filed: June 14, 2002
    Publication date: December 18, 2003
    Inventors: Bing-Joe Hwang, Shun-Tian Lin, Loka Subramanyam Sarma, Ming-Yao Cheng
  • Publication number: 20030232917
    Abstract: Aqueous bonding agents based on at least one phenolic resin, at least one aromatic dinitroso compound and a polyvinyl alcohol are suitable as a one-coat aqueous rubber-metal bonding agent to achieve permanent rubber-metal bonds. These bonding agents can be substantially free from organic solvents and halogen compounds, and allow one-coat application without an additional, previous application of a primer.
    Type: Application
    Filed: June 13, 2003
    Publication date: December 18, 2003
    Inventors: Rainer Wefringhaus, Hans-Joachim Purps
  • Patent number: 6664332
    Abstract: A resin composition suitable for forming ink receptive layer of recording sheets and having excellent ink receptivity, feathering prevention, gloss and weatherability, which comprises (A) an oxyalkylene group-containing polyvinyl alcohol resin and (B) a cationic group-containing polyvinyl alcohol resin, wherein a 15% by weight aqueous solution of the resin composition has a transparency according to JIS K 6726 of at least 50%.
    Type: Grant
    Filed: July 17, 2002
    Date of Patent: December 16, 2003
    Assignee: The Nippon Synthetic Chemical Industry Co., Ltd.
    Inventor: Masaru Saeki
  • Patent number: 6660348
    Abstract: An ink jet coating composition comprising a blend of silicas, a blend of super and/or fully and partially hydrolyzed polyvinyl alcohols, and a cationic resin is provided, where ink jet recording materials prepared from such compositions demonstrate a balance of properties including improved imaging performance and good water resistance.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: December 9, 2003
    Assignee: Kanzaki Specialty Papers, Inc.
    Inventors: Simon R. Cuch, George R. Stevens, Jr., Brian R. Waite
  • Patent number: 6656984
    Abstract: The invention relates to a hydrophobic polymer dispersion and a solvent-free process for the preparation thereof. According to the invention, the dispersion contains starch ester together with dispersion admixtures known as such. According to the process, the polymer is first mixed with a plasticizer in order to obtain a plasticized polymer blend. The plasticized polymer blend is then mixed with dispersion admixtures and water at an elevated temperature so as to form a dispersion. The plasticizing of the polymer and the dispersion of the mixture in water can be performed in an extruder. The obtained dispersion is homogenized in order to improve its stability. The dispersion obtained by the invention can be used to coat paper or board, as a primer or a component in paint or labeling adhesives, and it is also suitable for the production of cast films and as a binder in materials based on cellulose fibers, as well as for coating medicinal preparations.
    Type: Grant
    Filed: February 24, 1999
    Date of Patent: December 2, 2003
    Assignee: Oy Polymer Corex Kuopio Ltd.
    Inventors: Kristiina Haasmaa, Timo Petteri Paronen, Arto Olavi Urtti, Soili Peltonen, Maija Elina Heikkilä, Jani Vuorenpää
  • Patent number: 6649686
    Abstract: A washable spray formulation that includes a decorative component is provided. The decorative component may be glitter, pigment, dye, other materials that provide special effects or coloration, or combinations thereof. The preferred embodiment of the spray formulation also includes a solvent that functions as a carrier vehicle, two adhesives, a defoamer, glycol, an amine solvent, and a surfactant. The formulation is able to be pumped through a spray pump.
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: November 18, 2003
    Assignee: Duncan Enterprises
    Inventor: Frank Andrew Peters
  • Patent number: 6639049
    Abstract: The invention relates to a process for the preparation of polymers stabilized with protective colloids in the form of water-redispersible powders or aqueous dispersions thereof having a reduced content of volatile components, by a) polymerizing by emulsion or suspension polymerization, one or more monomers from the group consisting of vinyl esters, (meth)acrylates, vinyl aromatics, olefins, 1,3-dienes and vinyl halides and optionally further monomers copolymerizable therewith, b) aftertreating the polymer dispersion thus obtained by means of postpolymerization, distillation, and/or introduction of steam or inert gas to obtain a residual content of volatile, nonaqueous components of <2000 ppm, and c) spray drying of aftertreated polymer dispersion to a residual content of volatile, nonaqueous components of <400 ppm, the dispersion being adjusted prior to spray drying to a solids content of <45% by weight before spraying, the spray drying performed with gas at an inlet temperature of >120° C.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: October 28, 2003
    Assignee: Wacker Polymer Systems & Co. KG
    Inventor: Hans-Peter Weitzel
  • Patent number: 6635704
    Abstract: An organic particulate-filled adhesive is provided comprising ionomeric particulate dispersed in a polymer matrix containing water-soluble polymer or water-dispersible polymer. The adhesive preferably contains a plasticizer. If desired, in some formulations, the adhesive can contain additives, such as opacifying agents, skin cleansers, skin moisturizers, vitamins, and herbal extracts. The adhesive can have pressure sensitive adhesive properties, although such properties are not necessary. The adhesive can be formulated so as to be useful as a repulpable adhesive and as a cosmetic adhesive.
    Type: Grant
    Filed: November 29, 2001
    Date of Patent: October 21, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Michael R. Engel, Chung I. Young, Michael Govek, Michael D. Delmore, Michael R. Stumpf, Chi-Ming Tseng, Michael L. Ruegsegger
  • Patent number: 6632869
    Abstract: A process for preparing copolymers based on vinyl esters and ethylene and, if desired, further comonomers in the form of their aqueous dispersions, having a solids content of greater than 65% and a Brookfield viscosity (20 s−1) of less than 10,000 mPa·s, by means of free-radically initiated polymerization of one or more monomers selected from vinyl esters and ethylene and, if desired, further monomers copolymerizable therewith, in the presence of one or more protective colloids, polymerization being conducted in the presence of from 2 to 15% by weight of seed latex, based on the amount of vinyl ester, said process comprising a) polymerizing without adding emulsifier, and in the presence of one or more polyvinyl alcohols protective colloids having a degree of hydrolysis of from 80 to 95 mol % and a Höppler viscosity in 4% strength aqueous solution of from 3 to 30 mPa·s, and b) introducing the seed latex in a fraction of from 30 to 75% by weight before beginning the polymerization and
    Type: Grant
    Filed: July 16, 2001
    Date of Patent: October 14, 2003
    Assignee: Wacker Polymer Systems GmbH & Co. KG
    Inventor: Hans-Peter Weitzel
  • Publication number: 20030187123
    Abstract: A drag-reducing polymer suspension is described, along with a method for manufacturing the drag-reducing polymer suspension. The drag-reducing suspension is easily transportable, non-hazardous, and easily handled. The drag-reducing suspension is manufactured by grinding an ultrahigh molecular weight polymer with a wax crystal modifier and suspending it in a suspending fluid.
    Type: Application
    Filed: March 25, 2003
    Publication date: October 2, 2003
    Applicant: Conoco Inc.
    Inventors: Katrina M. Labude, Kenneth W. Smith, Ray L. Johnston
  • Patent number: 6627694
    Abstract: The description relates to a new composition which can be used for the preparation of a separating agent which in turn can be used for the manufacture of products in the form of slabs consisting of a granulate or particles of stone material bonded with a hardening resin; this composition essentially consists of: (a) glycerine in a quantity of 2-8 parts by weight; (b) an agent with an anti-foaming action in a quantity of 0.1-0.5 parts by weight; (c) an agent with a levelling action in a quantity of 0.2-0.8 parts by weight; (d) a polyvinyl alcohol in a quantity of 5-15 parts by weight. 80-120 parts of water are added to this composition in order to obtain the desired separating agent.
    Type: Grant
    Filed: September 1, 2000
    Date of Patent: September 30, 2003
    Inventor: Toncelli Luca
  • Publication number: 20030176564
    Abstract: A process for producing an aqueous dispersion of a polymer in an aqueous medium having a viscosity below 10 Pa.s, in which the polymer is dispersed in an aqueous medium in an extruder at a temperature above 100° C., the pressure inside the extruder being maintained above atmospheric pressure so that the aqueous medium does not boil inside the extruder.
    Type: Application
    Filed: March 11, 2003
    Publication date: September 18, 2003
    Inventors: Riaz Ahmad Choudhery, Kenneth Andrew Murray, Stephen Barry Downing, David John Southgate
  • Publication number: 20030171482
    Abstract: A material for coating a wood surface includes a thermoplastic coating material comprising a polyvinyl butyral polymer.
    Type: Application
    Filed: March 10, 2003
    Publication date: September 11, 2003
    Applicant: Faber-Castell AG
    Inventors: Udo Beck, Reiner Appel
  • Publication number: 20030166766
    Abstract: The invention relates to paper coating materials, comprising a polymer, dispersed in water, by means of polyvinyl alcohol as protective colloid (PVA-dispersed polymerisate for short).
    Type: Application
    Filed: June 17, 2002
    Publication date: September 4, 2003
    Inventors: Reinhold J. Leyrer, Harutyun Hanciogullari
  • Patent number: 6613833
    Abstract: A method for producing an aqueous ethylene-vinyl alcohol copolymer (EVOH) composition that ensures efficient removal of alcohol not worsening the environment in and around working areas, and which provides EVOH pellets of the aqueous composition, which can be produced stably and can be washed rapidly, the method involving introducing an EVOH solution that contains at least 50 parts by weight, relative to 100 parts by weight of EVOH therein, of an alcohol having a boiling point of not higher than 100° C., into a vessel, and contacting it with water vapor in the vessel, thereby letting the alcohol out along with water vapor and taking the resulting aqueous EVOH composition that contains from 0 to 10 parts by weight of the alcohol and from 10 to 500 parts by weight of water, relative to 100 parts by weight of EVOH therein, out of the vessel; and the EVOH pellets obtained by cutting the aqueous EVOH composition obtained in the method.
    Type: Grant
    Filed: August 7, 2001
    Date of Patent: September 2, 2003
    Assignee: Kuraray Co., Ltd.
    Inventors: Takaharu Kawahara, Toshio Tuboi, Yukihiro Ohara
  • Patent number: 6613853
    Abstract: A production method of a vinyl resin, which comprises subjecting a vinyl compound to suspension polymerization in a polymerization tank equipped with a reflux condenser in the presence of a dispersion stabilizer, wherein a polyvinyl alcohol resin (A) having a degree of hydrolysis of not less than 65 mol %, a polymerization degree of not less than 700 and satisfying the following formula (1) 0.0300≦(3−Y)/X<0.0330  (1) wherein X is a degree of hydrolysis (mol %) and Y is a degree of iodine absorption, is added at a polymerization conversion rate of the vinyl compound of not less than 30%. The production method of a vinyl resin of the present invention affords a vinyl resin having a high bulk density, which shows a superior antifoaming effect to suppress dry foams generated during the middle and the latter periods of polymerization.
    Type: Grant
    Filed: October 25, 2000
    Date of Patent: September 2, 2003
    Assignee: The Nippon Synthetic Chemical Industry Co., Ltd.
    Inventor: Mitsuo Shibutani
  • Publication number: 20030159775
    Abstract: An adhesive comprising: (a) 80 to 100% of a melt blend of 40 to 98% polyalphaolelin which has been grafted with 0 to 5% of at least 1 ethylenically unsaturated carboxylic acid or derivative thereof, (b) 2 to 60% of at least one copolymer of ethylene and vinyl acetate; (c) 0 to 20% of an opacifier; (d) optional further ingredients; wherein the total amount of components (a) and (b) is 80-100% of the composition and wherein the percentages of the components are selected to total 100%.
    Type: Application
    Filed: March 31, 2003
    Publication date: August 28, 2003
    Inventors: Sum-Wing Tsui, Anthony Francis Johnson
  • Publication number: 20030162886
    Abstract: An aqueous dispersion type pressure-sensitive adhesive composition contains an acrylic or rubber-based pressure-sensitive adhesive composition of the aqueous dispersion type and at least one hydrophilic polymer selected from the group consisting of polyalkylene glycols, polyvinylpyrrolidone, poly(vinyl alcohol)s, and poly((meth)acrylic acid), the amount of the hydrophilic polymer being from 0.5 to 15 parts by weight per 100 parts by weight, on a solid basis, of the acrylic or rubber-based pressure-sensitive adhesive composition of the aqueous dispersion type, and a pressure-sensitive adhesive product has a pressure-sensitive adhesive layer formed from the aqueous dispersion type pressure-sensitive adhesive composition.
    Type: Application
    Filed: February 12, 2003
    Publication date: August 28, 2003
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yutaka Tosaki, Hideki Nagatsu, Shinichi Kouno, Takahiro Yatagai
  • Patent number: 6608128
    Abstract: Polyvinyl alcohol compositions in the form of an aqueous solution are disclosed, where the aqueous polyvinyl alcohol compositions include: (i) polyvinyl alcohol; (ii) at least one polyaldehyde having at least 3 carbon atoms and being masked completely as a water-soluble hydrogen sulfite adduct; and (iii) at least one compound which is acidic in water. The aqueous polyvinyl alcohol compositions are suitable as adhesives and for use in cast films.
    Type: Grant
    Filed: April 13, 2000
    Date of Patent: August 19, 2003
    Assignee: Kuraray Specialities Europe GmbH
    Inventors: Martin Jakob, Richard Gutte