Patents Examined by J. M. Reddick
  • Patent number: 5166245
    Abstract: The invention is ink pigment grinding resins for water-based printing inks which are produced by the esterification of fortified rosin with styrene-allyl alcohol copolymer and various polyols. The resulting rosin resin may be employed over a wide range of pH values to produce stable low viscosity grind bases.
    Type: Grant
    Filed: November 12, 1991
    Date of Patent: November 24, 1992
    Assignee: Westvaco Corporation
    Inventor: Paul J. Zuraw
  • Patent number: 5164438
    Abstract: The saponified product of an ethylene-vinyl acetate copolymer is mixed with an oxidation catalyst to provide a resin composition having improved oxygen barrier quality. For better formability, the composition may be mixed or laminated with another thermoplastic resin such as a polyester.
    Type: Grant
    Filed: July 29, 1991
    Date of Patent: November 17, 1992
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Hiroshi Umeyama, Toshikazu Katoh, Katsuhiko Kimura, Katsuyuki Ohno, Tatuo Furuse
  • Patent number: 5158810
    Abstract: A melt-molded article such as water soluble fibers, a laminate and a container for waste matter, the article having biodegradability. The melt molded article is produced by melt-molding a composition comprising an oxyalkylene group-containing vinyl alcohol copolymer and starch or a starch-derived macromolecular substance.
    Type: Grant
    Filed: September 4, 1991
    Date of Patent: October 27, 1992
    Assignee: Nippon Gohsei Kagaku Kogyo Kabushiki Kaisha
    Inventors: Tsukasa Oishi, Masaru Saeki, Munetoshi Tomita
  • Patent number: 5155156
    Abstract: A composition including an oil and particles of a solid, water soluble flocculant polymer substantially immiscible with the oil provides ready dispersibility of the polymer in aqueous fluids. Desirably, the composition is substantially free of surfactants, the polymer particles have a mean particle size less than about 100 microns and preferably less than about 20 microns and the polymer particles are substantially dry.
    Type: Grant
    Filed: April 28, 1989
    Date of Patent: October 13, 1992
    Inventor: Clyde S. Scanley
  • Patent number: 5155154
    Abstract: A polyvinyl chloride-free plastisol comprisesa) 5 to 50% by weight of a methyl methacrylate-homopolymer or coplymerb) 10 to 50% by weight of a plasticiser,c) 20 to 70% by weight of a fillerd) 2 to 30% by weight of a blocked poly isocyanate, ande) 0.2 to 5% by weight of a polyamine. The plastisol is particularly useful for sealing spot welded joints in, for example, motor vehicle manufacture.
    Type: Grant
    Filed: December 22, 1988
    Date of Patent: October 13, 1992
    Assignee: Dr. Alois Stankiewicz GmbH
    Inventors: Karl-Heinz Krummel, Ernst Lohmar, Thomas Stankiewicz
  • Patent number: 5155170
    Abstract: The instant invention involves a process for forming a low formaldehyde, essentially color-free coating composition by applying the composition preferably to a wood substrate and curing. The composition comprises a blend of a polyhydroxy-containing polymer, an hexaalkoxymethylolmelamine, a polyacetal having the formula: ##STR1## wherein R is C.sub.1 -C.sub.3 and A is C.sub.1 -C.sub.20 allyl or aryl and an acid catalyst. The coating compositions of the instant invention exhibit extremely low color and give off a significantly reduced amount of formaldehyde when cured in comparison to conventional prior art, acid catalyzed melamine/formaldehyde cured coatings.
    Type: Grant
    Filed: January 14, 1992
    Date of Patent: October 13, 1992
    Assignee: Akzo Coatings, Inc.
    Inventors: Paul R. Baukema, Milton J. Kaelin, Donald W. Waltrip, Kenneth M. Znidersic
  • Patent number: 5147908
    Abstract: A cationic polyvinyl alcohol binder additive is prepared suitable for addition in the wet-end of a paper making process by reacting a blocked glyoxal resin, a cationic water-soluble aldehyde reactive polymer and a polyvinyl alcohol polymer.
    Type: Grant
    Filed: September 24, 1990
    Date of Patent: September 15, 1992
    Assignee: Sequa Chemicals Inc.
    Inventors: William C. Floyd, Louis R. Dragner
  • Patent number: 5145890
    Abstract: This invention is directed to a method for reducing the carboxylester content of an emulsion-polymerized addition polymer by contacting the aqueous emulsion polymer with a carboxylesterase enzyme and a reduced carboxylester content emulsion-polymerized addition polymer so prepared.
    Type: Grant
    Filed: August 30, 1991
    Date of Patent: September 8, 1992
    Assignee: Rohm and Haas Company
    Inventors: Clay B. Frederick, John R. Udinsky
  • Patent number: 5145910
    Abstract: New ketocarboxylated polymers which comprise an ester of a ketodiacid precursor, and part of all of the hydroxy or thiol groups of a polymer having one or more pendant hydroxy or thiol groups, are useful as adhesives, coatings, membranes and the like.
    Type: Grant
    Filed: July 27, 1990
    Date of Patent: September 8, 1992
    Assignee: Shell Oil Company
    Inventor: Pen-Chung Wang
  • Patent number: 5143970
    Abstract: Water wet nitrocellulose, butyl acrylate/methyl methacrylate monomers and phosphate surfactant are emulsified into an oil-in-water emulsion and polymerized to produce a nitrocellulose/acrylic latex emulsion with a particle size below 0.25 microns. Wood finishing lacquers produced from this latex emulsion are equivalent in performance to solvent lacquers while lowering VOC to below 2.3 lb/gal.
    Type: Grant
    Filed: June 3, 1991
    Date of Patent: September 1, 1992
    Assignee: Aqualon Company
    Inventor: Syed M. Ahmed
  • Patent number: 5141977
    Abstract: Aqueous polymer composition for application to synthetic polymeric materials to improve wettability of same by polymer matrices and bond strength therebetween, which includes a polymer containing vinyl groups, in at least one and preferably two fluorocarbon surfactants and water. The composition also optionally, and preferably includes a copolymerizable surfactant and ethoxy silicone. Synthetic polymeric materials treated with the aqueous polymer composition are disclosed primarily as reinforcing materials in structural composites, either alone or in conjuction with other reinforcing materials. Composites utilizing the pretreated reinforcing materials are also included.
    Type: Grant
    Filed: May 2, 1989
    Date of Patent: August 25, 1992
    Assignee: ABCO Industries, Ltd.
    Inventors: James M. Self, Paul C. Fleischer
  • Patent number: 5141973
    Abstract: A method of preparing a polyvinyl alcohol hydrogel contains the steps of charging an aqueous solution of a polyvinyl alcohol having a degree of hydrolysis of not less than 95 mol % and an average polymerization degree of not less than 500 into a container, the aqueous solution containing the polyvinyl alcohol in a concentration of not less than 5 wt. %, cooling the aqueous solution of the polyvinyl alcohol at a temperature of from - (minus) 9.degree. C. to - (minus) 3.degree. C., subjecting the aqueous solution of the polyvinyl alcohol to physical stimulation, and then maintaining the aqueous solution of the polyvinyl alcohol at a temperature of from - (minus) 5.degree. C. to + (plus) 5.degree. C. The polyvinyl alcohol hydrogel may be contained in a plastic container. An MRI phanton is composed of the plastic container containing such polyvinyl alcohol hydrogel.
    Type: Grant
    Filed: December 27, 1989
    Date of Patent: August 25, 1992
    Assignee: Nippon Oil Co., Ltd.
    Inventors: Tomokazu Kobayashi, Toshio Morihiro
  • Patent number: 5141988
    Abstract: An improved blister resistant paper coating polymer latex for paper coating comprising an aliphatic conjugated diene monomer, monoethylenic monomers and an ethylenically unsaturated carboxylic acid monomer and including a molecular weight modifier such as an organosulfur compound and a base.
    Type: Grant
    Filed: August 10, 1990
    Date of Patent: August 25, 1992
    Assignee: Reichhold Chemicals, Inc.
    Inventors: David W. Suwala, Emil G. Sammak
  • Patent number: 5139877
    Abstract: Aqueous polymer composition for application to synthetic polymeric materials to improve wettability of same by polymer matrices and bond strength therebetween, which includes a polymer containing vinyl groups, in at least one and preferably two fluorocarbon surfactants and water. The composition also optionally, and preferably includes a copolymerizable surfactant and ethoxy silicone. Synthetic polymeric materials treated with the aqueous polymer composition are disclosed primarily as reinforcing materials in structural composites either alone or in conjunction with other reinforcing materials. Composites utilizing the pretreated reinforcing materials are also included.
    Type: Grant
    Filed: October 27, 1988
    Date of Patent: August 18, 1992
    Assignee: ABCO Industries, Ltd.
    Inventors: James M. Self, Paul C. Fleischer
  • Patent number: 5137963
    Abstract: Non-formaldehyde emitting binders for nonwoven cellulosic materials comprise a solution copolymer of an olefinically unsaturated organic compound having at least one carboxylate group conjugated with the olefinic linkage, which is reacted with a hydroxyalkyl ester of an olefinically unsaturated carboxylic acid. The product of said reaction is admixed with a non-formaldehyde containing latex carrier to produce a binder composition which will reach substantially fully cured wet strength in 8 seconds or less.
    Type: Grant
    Filed: July 27, 1990
    Date of Patent: August 11, 1992
    Assignee: Union Oil Company of California
    Inventor: Dennis P. Stack
  • Patent number: 5137954
    Abstract: Sheet for safety glazings made of: a) polyvinyl butyral internally plasticized by the presence in the polymer of C.sub.7 to C.sub.15 aliphatic aldehyde groups and b) an external plasticizer in amount sufficient to provide a sheet glass transition temperature of about 25.degree. to 30.degree. C.
    Type: Grant
    Filed: September 30, 1991
    Date of Patent: August 11, 1992
    Assignee: Monsanto Company
    Inventors: Arijit M. DasGupta, Donald J. David, Roland J. Tetreault
  • Patent number: 5137969
    Abstract: A method for extruding polyvinyl alcohol which comprisesadding sufficient energy to the polyvinyl alcohol to both melt it and essentially eliminate the crystallinity in the melt, andsimultaneously removing energy from the melt at a rate sufficient to avoid decomposition of the polyvinyl alcohol.Rapidly cooling the extruded melt reduces the heat history and improves the resulting color of the extrudable polyvinyl alcohol.
    Type: Grant
    Filed: September 1, 1989
    Date of Patent: August 11, 1992
    Assignee: Air Products and Chemicals, Inc.
    Inventors: F. Lennart Marten, Amir Famili, James F. Nangeroni
  • Patent number: 5135982
    Abstract: A water soluble packaging film containing a predominant amount of partially acetalized product of polyvinyl alcohol by benzaldehyde derivatives.
    Type: Grant
    Filed: June 26, 1991
    Date of Patent: August 4, 1992
    Assignee: Aicello Chemical Company Limited
    Inventors: Takayuki Matsumoto, Tsutomu Suzuki, Yoshiyuki Tsukamoto, Hitoshi Nakamura
  • Patent number: 5135813
    Abstract: Permanently flexible and non-tacky coating mastic and caulking compositions having improved heat-age stability contain (a) at least one polymer having a T.sub.g of about -50.degree. C. to about -10.degree. C. and pendant functional groups attached to the polymer backbone and having the formula: ##STR1## in which R.sub.1 is a divalent organic radical at least 3 atoms in length, and X is organoacyl or cyano; (b) a zinc-containing pigment (e.g. zinc oxide); and (c) a polyphosphate anion in an amount effective for increasing the wet adhesion of the compositions, particularly of aged compositions. The mastics and caulks typically have total non-volatile matter concentrations of about 60 to about 90 weight percent of which about 15 to about 75 weight percent comprises the described polymer and about 25 to about 85 weight percent is the zinc-containing pigment and other non-volatile solid matter other than the polymer such as fillers, other pigments, etc.
    Type: Grant
    Filed: July 25, 1991
    Date of Patent: August 4, 1992
    Assignee: Union Oil Company of California
    Inventor: David M. Ingle
  • Patent number: 5134036
    Abstract: Ethylene-vinyl alcohol copolymers wherein ethylene content is 10-70 mol % diad syndiotacticity is not less than 55 mol %, and intrinsic viscosity [.eta.] is not less than 0.05 l/g when measured with a mixed solvent of 85 weight % of phenol and 15 weight % of water at 30 20 C., which show less decrease of resistance to gas permeation under high temperature and high humidity, while retaining resistance to get permeation under low humidity, transparency and melt moldability, and moldings and laminates formed thereof.
    Type: Grant
    Filed: May 9, 1991
    Date of Patent: July 28, 1992
    Assignee: Kuraray Co., Ltd.
    Inventors: Junichi Uemura, Akimasa Aoyama, Hitoshi Maruyama, Toshiaki Sato, Takuji Okaya