Patents Examined by Dennis R. Daley
  • Patent number: 5183847
    Abstract: Alkali-soluble resins, their preparation and use are disclosed herein. The resins are carboxylated polyamide/acrylic resins and are synthesized in a two-step fusion process in which a polyamide is first condensed with a carboxylated rosin and this intermediate product is then further condensed with an acrylic or styrene/acrylic copolymer.
    Type: Grant
    Filed: September 21, 1988
    Date of Patent: February 2, 1993
    Assignee: BASF Corporation
    Inventors: Sobhy El-Hefnawi, Shailesh C. Shah, Basil Wasyliw
  • Patent number: 5079275
    Abstract: Disclosed is a class of poly(aminoaromatic) compounds (I) obtained by capping polymeric polyols or polythiols iwth aromatic amine groups wherein the latter groups are linked by --O-- or --S-- to the polyol (polythiol) residues. Also disclosed are the precursor poly(nitroaromatic) compounds (II) from which the compounds (I) are derived.The polyamines are characterized by amine reactivities in respect of isocyanate polyaddition reactions which allows for polymer reaction rates that are intermediate of prior art related polyamine compounds.Accordingly, the compounds (I) find their prime utility in the formation of synthetic resins containing polyurea linkages.
    Type: Grant
    Filed: April 10, 1989
    Date of Patent: January 7, 1992
    Assignee: The Dow Chemical Company
    Inventors: Visweswara R. Durvasula, Fred A. Stuber
  • Patent number: 5068135
    Abstract: Aqueous dispersions of fluorinated polyurethanes obtained by the reaction of an organic diisocyanate with a mixture of diols containing ionizable groups and macroglycols comprising polyols and at least 1% by weight of one or more hydroxy- and/or carboxy-capped fluoropolyethers. Said fluorinated polyurethanes are salified, to transform the ionizable groups into hydrophilic cations and/or anions, and are then dispersed in water to be used in textile coatings.
    Type: Grant
    Filed: October 12, 1990
    Date of Patent: November 26, 1991
    Assignees: Ausimont S.p.A., Larac S.p.A.
    Inventors: Ignazio Zavatteri, Tiziana Gambini
  • Patent number: 5066762
    Abstract: A thermoplastic polyurethane resin is prepared by the reaction of(A) p-phenylene diisocyanate,(B) a hydroxyl terminated poly(hexamethylene carbonate) polyol having a molecular weight of 850 to 5000 and(C) a short chain polyol having 2 to 10 carbon atoms as the chain extending agent,the molar ratio of (B) : (C) being 1:2 to 1:0.05, and the molar ratio of isocyanate groups : total active hydrogen groups being 0.93:1 to 1.20:1.
    Type: Grant
    Filed: February 27, 1990
    Date of Patent: November 19, 1991
    Assignee: Nippon Polyurethane Industry Co., Ltd.
    Inventors: Yukio Ohbuchi, Yoshiaki Maeda, Masahiro Kawasaki, Susumu Sato, Mamoru Akimoto
  • Patent number: 5066711
    Abstract: A wetness indicating hot-melt adhesive which changes color in response to the presence of moisture is disclosed, which contains 20 to 70 wt. % of polymer, about 28 to 10 wt. % of which is water sensitive polymer; 25 to 60% of organic acid which is selected from a high acid fatty acid, or rosin acid, or a combination thereof; 0 to 40% of water soluble wax; 0 to 60 wt. % of glycerol monostearate; 0 to 55 wt. % of hydrogenated castor oil; 0 to 15 wt. % of polyalkylene wax; 0 to 60 wt. % of compatible plasticizer; and a wetness indicating agent which changes the color of the composition in response to moisture therein. The time of response of the color change can be controlled from about one second to a somewhat larger value as desired.
    Type: Grant
    Filed: November 15, 1989
    Date of Patent: November 19, 1991
    Assignee: The International Group, Inc.
    Inventors: Herman Colon, Albert Maletsky
  • Patent number: 5064872
    Abstract: A polyisocyanurate foam or a with polyurethane modified polyisocyanurate foam having a mainly closed cell structure and also a method for preparing this foam, the latter comprising closed cells wherein chloropropane, preferably 2-chloropropane, whether or not with another gas, is enclosed.
    Type: Grant
    Filed: March 2, 1990
    Date of Patent: November 12, 1991
    Assignee: Recticel
    Inventors: Joost Monstrey, Bart Wallaeys
  • Patent number: 5064870
    Abstract: In a method for the preparation of highly elastic, cold curing polyurethane foams, equilibrated organofunctional polysiloxanes of the average general formula ##STR1## wherein R.sup.1 is methyl or R.sup.2,R.sup.2 is chloropropyl,n has a value of 0 to 12,m has a value of 1 to 8 when R.sup.1 is methyl and a value of 0 to 6 when R.sup.1 is chloropropyl,are added in amounts of 0.01 to 2.0% by weight, based on the polyols, to the reaction batch.The stabilizing properties of the organofunctional polysiloxanes are superior to those of the known products. The foams, produced pursuant to the invention, have a coarser cell structure and a higher elasticity. The foams are more open-celled as measured by the impression force.
    Type: Grant
    Filed: October 10, 1990
    Date of Patent: November 12, 1991
    Assignee: Th. Goldschmidt AG
    Inventors: Hans-Joachim Kollmeier, Georg Burkhart, Rolf-Dieter Langenhagen, Helmut Lammerting, Bernd-Jurgen Klietsch
  • Patent number: 5055545
    Abstract: A composite comprises a coating which is adhered to an unsaturated usually cured elastomer utilizing a rubber-urethane adhesive having azoeneophile functionalities such as a dihydrocarbylazodicarboxylate, a dihydrocarbylazodicarboxamide, a dihydrocarbylazoesteramide, or the oxidized reaction product of a urethane prepolymer and a carbazate. A particularly useful carrier for the azoeneophiles is an isocyanate-terminated polyol prepolymer. The composite is useful when a paint is applied to consumer goods, e.g., as a flexible polyurethane paint applied to the sidewalls of tires, as a decorated article, as an adhesively bonded elastomeric composite, and the like.
    Type: Grant
    Filed: May 18, 1989
    Date of Patent: October 8, 1991
    Assignee: Bridgestone/Firestone, Inc.
    Inventor: David F. Lawson
  • Patent number: 5051495
    Abstract: In making polyarylethersulphones or polyaryletherketones or their thioanalogues by reaction of phenols with aromatic halogen compounds, raw polycondensation product is freed of alkali halide by adjusting its composition and/or temperature so that it dissolves at least 0.5% w/w of water and holds the polymer in solution, and then contacting it in liquid form with hot water, preferably under pressure.
    Type: Grant
    Filed: May 18, 1988
    Date of Patent: September 24, 1991
    Assignee: Imperial Chemical Industries PLC
    Inventors: Philip Staniland, Arthur H. Gilbert, Ian R. M. Henderson
  • Patent number: 5049648
    Abstract: A copolyester of long chain and short chain ester units, said long chain ester units being represented by the structure: ##STR1## and said short chain ester units being represented by the structure: ##STR2## wherein G is a divalent radical remaining after removal of terminal hydroxyl groups from a poly(alkylene oxide) glycol;R is a divalent radical remaining after the removal of carboxyl groups from a dicarboxylic acid; andD is a divalent radical remaining after removal of hydroxyl groups from a low molecular weight diol;with the proviso that the short chain ester units constitute about 25-65% by weight of the copolyester, at least about 75% of the R groups are 1,3-phenylene radicals, at least about 75% of the D groups are 1,4-butylene radicals, and the sum of the percentages of the R groups which are not 1,3-phenylene radicals and the D groups which are not 1,4-butylene radicals cannot exceed about 25%; said copolyester being further characterized by a melt index at C.
    Type: Grant
    Filed: September 16, 1988
    Date of Patent: September 17, 1991
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Guenther K. Hoeschele
  • Patent number: 5047493
    Abstract: Cationic paint binders based on polyether urethanes are formed by selective reaction of one NCO-group of a diisocyanate which contains NCO-groups of different reactivities with the primary hydroxyl groups of a polyhydroxypolyether in the presence of 1,4-diazabicyclo-2,2,2-octane (DABCO) as catalyst, and subsequently reacting the remaining NCO-group of the diisocyanate with the secondary amine. The binders which are largely free of low molecular basic by-products are used for formulating paints, particularly cathodically depositable electrodeposition paints, which are water-dilutable after protonation.
    Type: Grant
    Filed: July 2, 1990
    Date of Patent: September 10, 1991
    Assignee: Vianova Kunstharz, A.G.
    Inventors: Rudolf Schipfer, Wolfgang Daimer, Gerhard Schmolzer
  • Patent number: 5045226
    Abstract: Polyisocyanate preparations containing latent tin catalysts are made from an organic polyisocyanate and a reaction product of a sulfonyl isocyanate and an organic tin catalyst in which at least one tin-oxygen bond is present. The organic tin catalyst preferably contains a tin-alkoxy, tin-siloxy, distannoxane and/or tin-carboxylate group. The reaction product of a sulfonyl isocyanate with a tin-carboxylate must generate carbon dioxide during its formation. The sulfonyl isocyanate and organic tin compound are used in quantities such that at least one isocyanato-sulfonyl group is present for each tin-oxygen bond. These polyisocyanate preparation are storage stable and may be used to produce adhesives, coatings and foams.
    Type: Grant
    Filed: July 24, 1990
    Date of Patent: September 3, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Roland Richter, Hanns P. Muller, Wilhelm Weber, Rudolf Hombach, Bernd Riberi, Ralf Busch, Hans-Gerd Metzinger
  • Patent number: 5043379
    Abstract: A plastisol composition containing a vinyl chloride type polymer, a plasticizer, an adhesiveness-improving agent and a thermal dissociation-promoting agent, wherein the adhesiveness-improving agent is an aromatic diisocyanate polymer randomly blocked with at least two different members selected from the group consisting of monoalkylphenols and dialkylphenols.
    Type: Grant
    Filed: November 22, 1989
    Date of Patent: August 27, 1991
    Assignee: Kypeisha Chemical Co., Ltd.
    Inventors: Tatsuro Ota, Tsuguo Ogawa
  • Patent number: 5043098
    Abstract: A nonionic dispersing agent suitable for use in the production of aqueous polyurethane dispersions, said agent having the formula: ##STR1## wherein R.sup.1 represents a monovalent hydrocarbon radical containing 1-12 carbon atoms;R.sup.2 represents hydrogen or a mixture thereof with methyl and/or ethyl, at least 40% of the R.sup.2 substituents in said mixture being hydrogen;R.sup.3 represents an isocyanate-reactive organic radical;R.sup.4 represents H or an isocyanate-reactive organic radical;Z represents an alkylene radical containing 2-4 carbon atoms;m is an integer from 5 to 150, andn is 0 or 1.
    Type: Grant
    Filed: November 18, 1988
    Date of Patent: August 27, 1991
    Assignee: Imperial Chemical Industries PLC
    Inventors: John C. Padget, David A. Pears, Stephen G. Yeates, Gerardus C. Overbeek
  • Patent number: 5043381
    Abstract: An aqueous dispersion of a nonionic water-dispersible polyurethane having pendent polyoxyethylene chains and one crosslink per 3,000 to 100,000 atomic weight units. The dispersions are useful as coating compositions.
    Type: Grant
    Filed: September 13, 1989
    Date of Patent: August 27, 1991
    Assignee: ICI Americas, Inc.
    Inventors: Richard G. Coogan, Razmik Vartan-Boghossian
  • Patent number: 5043092
    Abstract: The present invention is directed to a process for the production of polyisocyanate mixtures containing isocyanurate groups and uretdione groups in a molar ratio of about 1:9 to 9:1 by oligomerizing a portion of the isocyanate groups of hexamethylene diisocyanate using trialkyl phosphines and/or peralkylated phosphorus acid triamides as the catalysts which accelerate the dimerization and trimerization of isocyanate groups, terminating the reaction at the desired degree of oligomerization by the addition of a catalyst poison and removing unreacted hexamethylene diisocyanate to a residual content of at most 0.5% by weight, characterized in that, before addition of the catalyst, the hexamethylene diisocyanate starting material is freed from carbon dioxide to a residual content of less than 20 ppm (weight).
    Type: Grant
    Filed: March 13, 1989
    Date of Patent: August 27, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Josef Pedain, Klaus Konig, Winfried Dell
  • Patent number: 5041494
    Abstract: The present invention is directed to aqueous solutions or dispersions of cationically modified polyurethanes, characterized in that the dissolved or dispersed polyurethanes(i) contain about 2 to 200 milliequivalents of incorporated ammonium groups per 100 g of solids content,(ii) contain 0 to about 25% by weight of ethylene oxide units within terminal or lateral polyether chains and(iii) contain at least 1.3% by weight, calculated as SiO.sub.3 (molecular weight=76), of built-in structural units corresponding to the formula ##STR1## wherein R', R" and R"' may be the same or different and represent hydrogen or alkyl groups containing 1 to 4 carbon atoms,the total quantity of hydrophilic structural units (i) and (ii) being sufficient to ensure the solubility or dispersibility of the polyurethanes in water and the solutions or dispersions having a pH value of 3 to 6.
    Type: Grant
    Filed: October 28, 1988
    Date of Patent: August 20, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Joachim Franke, Hanns P. Muller
  • Patent number: 5039739
    Abstract: An aqueous dispersion of a water-dispersible polyurethane having pendent fluoroalkyl groups, said polyurethane being the product of chain extending, in aqueous medium, a water-dispersible, isocyanate-terminated polyurethane prepolymer having pendent fluoroalkyl groups.
    Type: Grant
    Filed: April 26, 1989
    Date of Patent: August 13, 1991
    Assignees: Imperial Chemical Industries PLC, ICI Americas, Inc., ICI Resins BV
    Inventors: John C. Padget, Stephen G. Yeates, Richard G. Coogan, Gerardus C. Overbeek
  • Patent number: 5039775
    Abstract: A process for producing polyurea resin in which an amine compound containing aromatic polyamine and specific aminobenzoate derivative and polyisocyanate are reacted. The polyurea resin is decreased in temperature dependence and improved in hardness, strength, toughness, and heat resistance.
    Type: Grant
    Filed: January 18, 1990
    Date of Patent: August 13, 1991
    Assignee: Ihara Chemical Industry Co., Ltd.
    Inventor: Yoshijiro Oyaizu
  • Patent number: 5039726
    Abstract: The present invention relates to alkyl (C.sub.12 -C.sub.22) esters of rosin acids which are useful as a total or partial replacement for extender or processing oil in rubber formulations. Addition of the alkyl (C.sub.12 -C.sub.22) esters of rosin acid improve the tear of the vulcanizate.
    Type: Grant
    Filed: September 25, 1989
    Date of Patent: August 13, 1991
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Lawson G. Wideman, Paul H. Sandstrom