Patents Examined by J. M. Reddick
  • Patent number: 5306757
    Abstract: Disclosed is an emulsified alkenylsuccinic acid sizing agent useful for acid papermaking. The sizing agent has a solid concentration of at least 25% by weight and comprises an alkenylsuccinic acid which is the reaction product of a branched internal olefin and maleic anhydride and which has been dispersed in water by an emulsifying and dispersing agent comprising polyvinyl alcohol. The sizing agent results in good storage stability and has an excellent sizing effect at a low addition ratio immediately after completion of high-temperature papermaking and over a wide pH range.
    Type: Grant
    Filed: December 21, 1992
    Date of Patent: April 26, 1994
    Assignee: Mitsubishi Oil Co., Ltd.
    Inventors: Shigeto Hatanaka, Yoshio Takahashi, Hideto Umekawa
  • Patent number: 5300566
    Abstract: Vinyl acetate and an N-vinyl formamide are copolymerized to yield poly(vinyl acetate)-co-poly(N-vinyl formamide) which is base hydrolyzed to poly(vinyl alcohol)-co-poly(N-vinyl formamide). Two phase hydrolysis of particles of poly(vinyl alcohol)-co-poly(N-vinyl formamide) as a slurry in methanol yields particles of poly(vinyl alcohol)-co-poly(vinylamine).provided is a copolymer of the following general formula ##STR1## where m is 0 to 15 mole %. n is 50 to 99 mole %.x is 0 to 30 mole %. andy is 1 to 50 mole % .
    Type: Grant
    Filed: April 15, 1988
    Date of Patent: April 5, 1994
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Robert K. Pinschmidt, Jr., Ta-Wang Lai
  • Patent number: 5284900
    Abstract: The present invention yields a coating film excellent in adhesion, water resistance, solvent resistance and durability. A compound having a carboxyl group and a long-chain alkylthio group or a salt thereof is used as an emulsifier and emulsion polymerization is carried out using a polymerizable monomer or monomers having, within their molecule, a group reactive with a carboxyl group as raw materials for emulsion polymerization, whereby the resin produced by emulsion polymerization and the emulsifier react with each other efficiently on the occasion of film formation and form a crosslinked structure. When a compound having a polymerizable unsaturated group in addition to the carboxyl group and long-chain alkylthio group or a salt thereof is used as the emulsifier, not only the above-mentioned crosslinked structure is formed but also the polymerizable unsaturated group in the emulsifier will react with the unsaturated group in the polymerizable monomer or monomers in the manner of grafting.
    Type: Grant
    Filed: May 31, 1991
    Date of Patent: February 8, 1994
    Assignees: Nippon Shokubai Co., Ltd., Oji Paper Co., Ltd.
    Inventors: Masuji Izubayashi, Masatoshi Yoshida, Toshiaki Matsunaga, Kohei Hori, Teruo Kikuta, Shiro Nakano, Hidetoshi Hatta
  • Patent number: 5270379
    Abstract: Fluid coating materials such as paints, ink pastes, personal care creams and the like having a water-base are thickened with an associative thickener which is a vinylamine polymer having a weight average molecular weight above 10.sup.5 and which has been modified by reaction with at least 0.2 mer percent of a linear monoaldehyde having 8 to 30 carbon atoms. A hydrolyzed polymer of N-vinylformamide which has been hydrophobically modified with an aldehyde such as dodecaldehyde, exhibits associative thickening characteristics and is useful in thickening water-based formulations.
    Type: Grant
    Filed: August 31, 1992
    Date of Patent: December 14, 1993
    Assignee: Air Products and Chemcials, Inc.
    Inventors: Thomas P. McAndrew, Andrew F. Nordquist, Robert K. Pinschmidt, Jr., Donald P. Eichelberger
  • Patent number: 5256716
    Abstract: A coating formulation for secure bonding attachment to surfaces of resilient or flexible articles, including plastic foam articles and comprising a highly adherent and coherent water-based film forming mixture for coating the surface of flexible foam articles. The working solution of the coating preferably has a formulation containing:ComponentAcrylic emulsion;Plasticizer;Coalescing agent;Polyacrylate thickener/rheology modifier;Defoamer;Surfactant;Ammonium hydroxide; andWater.The working solution is applied to the surfaces of the article being treated and the water solvent which is present evaporates at a significantly rapid rate in the ambient to form a thick coating having a substantially dry outer surface. The film remains securely bonded to the article even though flexed and otherwise roughly treated.
    Type: Grant
    Filed: August 20, 1990
    Date of Patent: October 26, 1993
    Assignee: PDI, Inc.
    Inventors: Scott Haasl, Mark Kenow
  • Patent number: 5250586
    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: March 11, 1992
    Date of Patent: October 5, 1993
    Inventor: Clyde S. Scanley
  • Patent number: 5248724
    Abstract: A sizing agent for paper, which comprises 100 parts by weight of a polyvinyl alcohol (component A) and from 1 to 20 parts by weight of a compound (component B) provided with the following requisites (1) to (4): (1) the backbone chain is a block copolymer of ethylene oxide and propylene oxide, (2) in the backbone chain, the proportion of oxyethylene units is from 20 to 40% by weight, and the proportion of oxypropylene units is from 60 to 80% by weight, (3) of the two terminals, one terminal is a hydrogen atom bonded to an oxygen atom of an oxyethylene unit or an oxypropylene unit, and the other terminal is a C.sub.1-10 alkoxyl group or a hydrogen atom bonded to an oxygen atom of an oxyethylene unit or an oxypropylene unit, and (4) the weight average molecular weight is from 600 to 1,200.
    Type: Grant
    Filed: February 21, 1992
    Date of Patent: September 28, 1993
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Yoshihumi Nosaka, Osamu Ishiguro
  • Patent number: 5248717
    Abstract: This invention relates to novel hydroxy-functional polyester diluents, and more particularly, to acrylic-modified hydroxy-functional polyester reactive diluents useful for blending with a variety of thermosetting or thermoplastic film-forming polymers. More specifically, the hydroxy-functional polyester reactive diluents are essentially low molecular weight polyesters derived from triols, and a combination of unsaturated monocarboxylic acids and saturated monocarboxylic acids. These hydroxy-functional polyester diluents may be copolymerized with one or more acrylic monomers, i.e. hydroxy-functional acrylic monomers, and blended with a variety of thermosetting or thermoplastic film-forming polymers. These blends of the film-forming polymers and the hydroxy-functional polyester diluents can be crosslinked with conventional crosslinking agents such as isocyanates and used in the formulation of low VOC paint compositions particularly useful as automotive topcoats.
    Type: Grant
    Filed: December 31, 1991
    Date of Patent: September 28, 1993
    Assignee: The Sherwin-Williams Company
    Inventor: John Mathai
  • Patent number: 5244961
    Abstract: A non-vulcanized thermoplastic composition comprising a polyamide and an elastomeric halogen-containing copolymer of a C.sub.4 to C.sub.7 isomonoolefin and a para-alkylstyrene is prepared by blending the polyamide and elastomeric copolymer in the presence of specified metal compounds in an amount insufficient for vulcanizing the composition. Optionally, the resulting composition may be subjected to vulcanization.
    Type: Grant
    Filed: September 19, 1991
    Date of Patent: September 14, 1993
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Thomas C. Yu, Hsien C. Wang, Kenneth W. Powers
  • Patent number: 5244964
    Abstract: A paper coating composition consisting essentially of an aqueous plastic dispersion which is based on .alpha.-methyleneglutaronitrile, a C.sub.8 - to C.sub.12 - monovinylaromatic compound, a plasticizing component selected from the group consisting of C.sub.4 - to C.sub.6 acyclic, conjugated diolefines and C.sub.4 - to C.sub.8 - alkyl (meth)acrylates, and a C.sub.3 - to C.sub.6 .alpha., .beta.-monoethylenically unsaturated carboxylic acid as binder, and conventional auxiliaries.
    Type: Grant
    Filed: November 4, 1992
    Date of Patent: September 14, 1993
    Assignee: Huels Aktiengesellschaft
    Inventors: Karl Hahn, Hans-Peter Schwengers, Edgar Brehmer, Willi Gruber
  • Patent number: 5244695
    Abstract: A method for making a nonwoven filter which comprises impregnating a nonwoven filter substrate with a curable binder composition, the binder composition consisting essentially of(a) 10 to 100 wt% fully hydrolyzed PVOH which has a DPn of 100 to 2300; and(b) 0 to 90 wt% aqueous polymer emulsion, on a solids basis.The preferred aqueous polymer emulsion is an ethylene-vinyl chloride (EVCl) copolymer emulsion or a vinyl acetate/-N-methylolacrylamide (VAc/NMA) copolymer emulsion, or both.
    Type: Grant
    Filed: March 17, 1992
    Date of Patent: September 14, 1993
    Assignee: Air Products and Chemicals, Inc.
    Inventors: George Davidowich, John G. Iacoviello, John S. Sadowski
  • Patent number: 5240997
    Abstract: Process for producing ethylene-vinyl ester copolymers using a polymerization solvent of a dialkyl sulfoxide (process X); process for producing ethylene-vinyl alcohol copolymer by liquid phase saponification using a solvent of a dialkyl sulfoxide (process Y); and process for producing shaped articles which comprises contacting the ethylene-vinyl alcohol copolymer obtained by the process Y, or that obtained by saponifying the ethylene-vinyl ester copolymer obtained by process X, to a non-solvent for ethylene-vinyl alcohol copolymer.Ethylene-vinyl ester copolymers having a wide range of ethylene content and higher degree of polymerization than that with solution polymerization using methanol.The rate of saponification is higher than that with single solvent system of lower alcohol.Production cost is low, because production process of polymer is directly connected to that of shaped articles utilizing the polymer.
    Type: Grant
    Filed: January 8, 1992
    Date of Patent: August 31, 1993
    Assignee: Kuraray Co., Ltd.
    Inventors: Hisamichi Yanai, Takanori Kitamura, Fumio Nakahara, Katsumi Shimizu, Akimasa Aoyama, Takeshi Moritani
  • Patent number: 5240992
    Abstract: Disclosed is an aqueous emulsion composition of a copolymeric resin having excellent storage stability and capable of forming a coating film of the resin on a substrate surface with excellent adhesion by virtue of introduction of a moiety of the monomeric units having an alkoxy-containing organosilyl group to serve as a silane coupling agent. The organosilyl group-containing moiety is introduced into the resin by the copolymerization of an organosilane compound represented by the general formula Vi--R.sup.1 --SiMe.sub.3-n (OR.sup.2).sub.n, in which Vi is a vinyl group, Me is a methyl group, R.sup.1 is a divalent hydrocarbon group having 4 to 12 carbon atoms, R.sup.2 is a monovalent hydrocarbon group having 1 to 6 carbon atoms and n is 1, 2 or 3. As a consequence of isolation of the vinyl group from the silicon atom with intervention of the group R.sup.1, the organosilane compound has good copolymerizability with other ethylenically unsaturated organic monomers.
    Type: Grant
    Filed: November 10, 1992
    Date of Patent: August 31, 1993
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventor: Masaaki Yamaya
  • Patent number: 5240981
    Abstract: The present invention relates to a polyimide resin composition and products, especially storage stable polyimide pre-pregs, manufactured therefrom with improved processing properties comprising (A) the reaction product of a polyimide, an alkenylphenol or an alkenylphenol ether, and tribromophenyl-maleimide, (B) an ionic or free-radical polymerization catalyst and (C) phenothiazine derivatives.
    Type: Grant
    Filed: June 3, 1991
    Date of Patent: August 31, 1993
    Assignee: Ciba-Geigy Corporation
    Inventors: Benjamin G. Chin, Roger Tietze
  • Patent number: 5238995
    Abstract: Provided are high-performance polyvinyl alcohol fibers having excellent resistances to hot water and dry heat as well as excellent strength and elastic modulus. The fibers are produced from a highly syndiotactic polyvinyl alcohol containing units from vinyl pivalate in an appropriate amount, which renders it possible to draw the highly crystalline fiber in a high drawing ratio of at least 16.
    Type: Grant
    Filed: September 6, 1990
    Date of Patent: August 24, 1993
    Assignee: Kuraray Company Limited
    Inventors: Yoshiharu Fukunishi, Akitsugu Akiyama, Toshiaki Sato, Hirofumi Sano, Akio Ohmory
  • Patent number: 5238990
    Abstract: A thermoplastic composition is provided which comprises a polyamide, a grafted polymer of an isomonoolefin and an alkylstyrene, such as a maleic anhydride-grafted copolymer of isobutylene and para-methylstyrene, and optionally a polyolefin polymer.
    Type: Grant
    Filed: June 5, 1991
    Date of Patent: August 24, 1993
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Thomas C. Yu, Donald A. White, Hsien C. Wang
  • Patent number: 5238986
    Abstract: The composition of the present invention is composed of finely divided solid refractory material suspended in a nonaqueous liquid slip composition. The nonaqueous liquid slip composition consists essentially of a deflocculent composed of a vinyl chloride and vinyl acetate resin dissolved in an organic solvent. The composition may be slip cast or cold formed into a low density article which is then sintered into a dense product.
    Type: Grant
    Filed: February 21, 1992
    Date of Patent: August 24, 1993
    Assignee: Praxair S.T. Technology, Inc.
    Inventor: Lionel C. Montgomery
  • Patent number: 5237083
    Abstract: An aqueous glass fiber sizing composition acetate file former and an effective amount of a lubricant additive having the formula: ##STR1## where R is an alkyl or alkenyl group of 6 to 20 carbons, A is a divalent organic--S--or--NH--group, R.sup.1 is an alkyl group of 1 to 4 carbons, m is or 1 and n is 0 to 10 with the proviso that when n is O, m is also O.
    Type: Grant
    Filed: March 5, 1992
    Date of Patent: August 17, 1993
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Gary T. Martino, Michael J. Hasuly, John J. Tsai
  • Patent number: 5234978
    Abstract: A composition comprising a polymer of an unsaturated hydrocarbon, a C.sub.1-4 alkyl or hydroxyalkylether of starch having a degree of substitution of at least 0.25, and a polyhydric aliphatic alcohol having 2 to 10 carbon atoms and 2 to 6 hydroxyl groups wherein the compatibilizing agent can be a vinyl copolymer, acrylic copolymer and mixtures thereof. The composition can be used in the preparation of biodegradable plastics.
    Type: Grant
    Filed: August 14, 1991
    Date of Patent: August 10, 1993
    Assignee: Cargill, Incorporated
    Inventors: Rita M. Delrue, Anton L. German, Henricus E. H. Meijer, Antonius H. Zijderveld, Jan Bussink
  • Patent number: 5225577
    Abstract: An organic nonlinear optical material comprising a 4-nitrophenylaminoacetaldehyde acetal of the following formula (I): ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 each represent a hydrogen atom, or a linear or branched alkyl group having 1 to 6 carbon atoms, and R.sub.4 represents a hydrogen atom, a linear or branched alkyl group having 1 to 6 carbon atoms, a linear or branched alkoxy group having 1 to 6 carbon atoms, a hydroxyl group, a nitro group or a halogen atom.
    Type: Grant
    Filed: February 24, 1992
    Date of Patent: July 6, 1993
    Assignees: Naoya Ogata, Seizo Miyata, Ube Industries, Ltd., Research Development
    Inventors: Naoya Ogata, Yasuhiko Yokowo