Patents Examined by H. S. Cockeram
  • Stabilization of rosin dispersions with low molecular weight non-ionic polymers
    Patent number: 4328141
    Abstract: Low molecular weight, non-ionic copolymers of acrylamide and a monomer selected from the group consisting of styrene, alkyl (C.sub.4 -C.sub.24) substituted acrylamides and ethylene provide improved mechanical and heat stability to colloidal aqueous rosin dispersions.
    Type: Grant
    Filed: April 2, 1981
    Date of Patent: May 4, 1982
    Assignee: American Cyanamid Company
    Inventors: John P. Farewell, David W. Lipp
  • Roofing asphalt formulation
    Patent number: 4328147
    Abstract: The present invention is an asphaltic composition which is useful as a roofing asphalt formulation and method of making this formulation. The composition includes about 39 to 99 percent by weight of oxidized asphalt and between 1 and about 8 percent oxidized polyethylene. It is preferred to use between about 0 to 40 percent of the saturant, which can be an unoxidized asphalt, to modify the viscosity of the formulation. There can be a filled asphaltic composition comprising about 40 percent by weight to about 99 percent by weight of the asphaltic composition and about 1 percent by weight to about 60 percent by weight of filler, which can be stone dust.
    Type: Grant
    Filed: October 30, 1980
    Date of Patent: May 4, 1982
    Assignee: Allied Corporation
    Inventors: Irving B. Chang, Robert E. Beckwith, Jr.
  • Curable N-acylurea polymers and coating compositions therefrom
    Patent number: 4328138
    Abstract: Curable N-acylurea polymers and coating compositions are provided which cure by reaction of ethylenic unsaturation of the acyl group. The subject polymers are prepared by reaction of a polymeric carbodiimide with an ethylenically unsaturated monocarboxylic acid. Coating compositions so provided may have N-acylurea polymer solids contents of about 30% to about 95% by weight, exclusive of pigment.
    Type: Grant
    Filed: December 4, 1980
    Date of Patent: May 4, 1982
    Assignee: DeSoto, Inc.
    Inventors: Shiow-Ching Lin, Gerry K. Noren
  • Urethane rheology modifiers and coating compositions containing same
    Patent number: 4327008
    Abstract: Rheology modifiers useful in water-based and organic solvent-based compositions are derived from the reaction of polyalkylene oxide, polyfunctional material, diisocyanate, water and a monofunctional active hydrogen-containing compound or monoisocyanate. The modifiers are characterized by having a branched structure, urea linkages and terminal hydrophobic groups.
    Type: Grant
    Filed: December 29, 1980
    Date of Patent: April 27, 1982
    Assignee: PPG Industries, Inc.
    Inventors: Karl F. Schimmel, Jerome A. Seiner, Roger M. Christenson, Rostyslaw Dowbenko
  • Agent of chroma and brightness for pigments
    Patent number: 4327017
    Abstract: The present invention relates to the product from the reaction of a basic polyaluminum or aluminum salt with a resin acid or its salt; said resin acid being derived from a rosin or a modified rosin. This agent is especially effective for improving the chroma and brightness of pigments when such pigment is treated with the polyaluminum salt by e.g. mixing. In addition to this, the polyaluminum salt increases the lipophilic properties of the pigments, which improves their oil-dispersability and also the pigments treated with the polyaluminum salt are essentially free from bleeding.
    Type: Grant
    Filed: March 6, 1980
    Date of Patent: April 27, 1982
    Assignees: Nihonshikizai Kogyo Co., Ltd., Takeda Chemical Industries, Ltd.
    Inventors: Seigo Iwamoto, Eiichi Saito
  • Process for the preparation of polyisocyanurate dispersions modified with halogenated alcohols and compositions prepared therefrom
    Patent number: 4326043
    Abstract: Polyisocyanurate polymers are prepared by polymerization of polyisocyanates in organic solvents employing trimerization catalysts. The polyisocyanates are reacted with halogenated alcohols subsequent to polymerization. These polymers may be dispersed in polyols for the preparation of cellular and non-cellular polyurethane products having improved flame retardant physical properties.
    Type: Grant
    Filed: January 19, 1981
    Date of Patent: April 20, 1982
    Assignee: BASF Wyandotte Corporation
    Inventors: Thirumurti Narayan, John T. Patton, Jr.
  • Hot melt adhesive compositions containing rosin esters
    Patent number: 4325853
    Abstract: Hot melt adhesive compositions are provided which contain (a) about 10-30 weight % of an alkenyl succinic anhydride, (b) about 20-60 weight % of an ethylene copolymer, and (c) about 10-40 weight % of a tackifying resin which is a rosin ester.
    Type: Grant
    Filed: January 29, 1981
    Date of Patent: April 20, 1982
    Assignee: Gulf Oil Corporation
    Inventors: Vikramkumar Acharya, Pallavoor R. Lakshmanan
  • Process for the preparation of polyisocyanates containing isocyanurate groups and the use thereof
    Patent number: 4324879
    Abstract: The present invention is concerned with an improved process for the production of partially trimerized hexamethylene diisocyanate which yields isocyanurate isocyanates which have low viscosity and low monomer contents by the use of a quaternary ammonium hydroxide catalyst which is hydroxyalkyl substituted at its N atom.
    Type: Grant
    Filed: May 19, 1980
    Date of Patent: April 13, 1982
    Assignee: Bayer Aktiengesellschaft
    Inventors: Manfred Bock, Josef Pedain, Walter Uerdingen
  • Naturally occurring thermoplastic resins as a substitute for various petroleum-derived materials in rubber stocks
    Patent number: 4324710
    Abstract: Natural occurring thermoplastic resins are used as a substitute for process oils and/or hydrocarbon resins, as well as for tackifiers, softeners, extenders, processing aids, and cure retarders, in rubber stocks, as for example, a rubber skim stock used in making a tire. The resins, which are derived from crude wood rosin, are high melting thermoplastic resins having carboxylic acid groups and are insoluble in aliphatic hydrocarbons. The source of the natural occurring resins is in ample supply as they are obtained from pine trees grown in North America. A specific type of thermoplastic resin is Vinsol, a registered trademark of Hercules Corporation.
    Type: Grant
    Filed: October 2, 1980
    Date of Patent: April 13, 1982
    Assignee: The Firestone Tire & Rubber Company
    Inventors: James A. Davis, Robert C. Koch
  • Solutions of polyisocyanate polyaddition products
    Patent number: 4324716
    Abstract: This invention relates to solutions of polyisocyanate polyaddition products with a solids content of from 5 to 70% by weight ofA. Reaction products of(a) polyisocyanates,(b) hydrazines and/or polyamines and/or dihydrazides and/or ammonia and/or urea and/or low molecular weight polyols,(c) optionally higher molecular weight polyols and(d) optionally formaldehyde inB. polyhydric alcohols having a molecular weight of between 62 and 450.
    Type: Grant
    Filed: November 24, 1980
    Date of Patent: April 13, 1982
    Assignee: Bayer Aktiengesellschaft
    Inventors: Artur Reischl, Gert Jabs
  • Polyisocyanurates from diols modified with epoxy resins
    Patent number: 4323658
    Abstract: A method of preparing polyether polyols in the 200-1000 molecular weight range by modifying a polyol initiator with an epoxy resin and one or more alkylene oxides is described. The modified polyols may be used in preparing rigid isocyanurate foams with improved compressability and flammability properties.
    Type: Grant
    Filed: September 2, 1980
    Date of Patent: April 6, 1982
    Assignee: Texaco Inc.
    Inventors: George P. Speranza, Robert L. Zimmerman
  • Method of producing polyurethanes
    Patent number: 4322519
    Abstract: The use of a catalytic amount of a specific monoorganotin compound, namely a monoalkyltin oxide, a monocarboxylate thereof, a monoalkyltin sulfide or monophenyltin oxide, in producing polyurethanes by reacting under heating an at least partially blocked polyisocyanate and an active hydrogen-containing compound significantly lowers the baking temperature and gives cured coatings with a smooth surface and good performance.
    Type: Grant
    Filed: December 1, 1980
    Date of Patent: March 30, 1982
    Assignee: Yoshitomi Pharmaceutical Industries, Ltd.
    Inventors: Koreyoshi Suenobu, Masanori Kohara, Kazuki Katsuyama, Ryoichi Kinishi
  • Ethylene-vinyl ester copolymer blended with dibasic acid-modified rosin ester
    Patent number: 4322326
    Abstract: A coating composition of enhanced physical characteristics such as those of hardness, flexibility and/or ultra-violet resistance is provided which comprises a mixture of ethylene-vinyl ester copolymer containing at least about 55% by weight of interpolymerized vinyl ester and a dibasic acid-modified rosin ester of a rosin acid and a polyhydric alcohol containing from 2 to 6 hydroxyl groups, said dibasic acid-modified rosin ester being present in said composition at a level of at least about 30% by weight.
    Type: Grant
    Filed: February 9, 1981
    Date of Patent: March 30, 1982
    Assignee: National Distillers & Chemical Corp.
    Inventor: Lorrin W. Pyle
  • Process for the catalytic setting of polyurethane molding compositions
    Patent number: 4321350
    Abstract: Polyurethane molding compositions are disclosed which contain diisocyanates and polyols and/or polyurethane prepolymers and sorbic acid or cinnamic as a setting catalyst. A process for preparing such compositions is also disclosed. These compositions give a rapid initial hardening and therefore mold release properties, which contribute to increased production speeds. Moreover, the acids used are physiologically safe, so that the process may be used for the production of objects used in medical science. The acids may also be used in a physiologically safe mixture with a heavy-metal containing catalyst.
    Type: Grant
    Filed: May 20, 1980
    Date of Patent: March 23, 1982
    Assignee: Gambro Dialysatoren KG
    Inventor: Hans-Dieter Lehmann
  • Polymerization process short stopped with undisproportionated rosin acid
    Patent number: 4321171
    Abstract: Method and composite of forming an elastomer product which comprises (A) solvent solution polymerizing an olefin monomer in the presence of an organometallic catalyst, (B) shortstopping the reaction with an excess of a rosin acid which has not been submitted to a disproportionation process and (C) recovering the elastomer composite.
    Type: Grant
    Filed: September 18, 1980
    Date of Patent: March 23, 1982
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: James N. Henderson, Paul H. Sandstrom
  • Polyisobutylene/phenol polymers treated with diisocyanates and poly(oxyalkylene)polyols
    Patent number: 4321343
    Abstract: Disclosed herein are block copolymers prepared by polymerizing isobutylene in the presence of an alkyl-substituted phenol as chain transfer agent followed by reaction with a diisocyanate and coupling to a polyoxyalkylene polyol.
    Type: Grant
    Filed: October 17, 1980
    Date of Patent: March 23, 1982
    Assignee: W. R. Grace & Co.
    Inventor: John M. Rooney
  • Foundry binders based on a phenolic reaction product
    Patent number: 4320037
    Abstract: A foundry mold or core is prepared by mixing with a foundry aggregate a polyisocyanate, a polymeric addition product of a phenol and a further material comprising aromatic hydroxyl groups, forming the mixture to the required shape and causing or permitting the polyisocyanate to react with both the addition product and the further material to bind the aggregate. The addition product may be prepared by reacting an unsaturated hydrocarbon with a phenol. The hydrocarbon may be comprised by a mixture of terpenes. The further hydroxy material may be a bisphenol or phenolic resin.
    Type: Grant
    Filed: August 7, 1979
    Date of Patent: March 16, 1982
    Assignee: Fordath Limited
    Inventor: David Dumolo
  • Cathodically depositable coating compositions and process for same
    Patent number: 4320220
    Abstract: Self-crosslinking coating compositions which are cathodically deposited on electrodeposition of paints containing the coating compositions and a process for producing aqueous solutions of the self-crosslinking coating compositions by acid neutralization are described. The coating compositions are the reaction products of a resin carrying amine groups and hydroxyl or carboxyl groups, and the reaction product carrying one free isocyanate group of a polyisocyanate and at least one ethylenically unsaturated monomer having at least one isocyanate reactive hydrogen atom and the group ##STR1## The cathodically depositable electrodeposition paints cure rapidly at relatively low temperatures to provide films which are highly resistant to corrosive influences.
    Type: Grant
    Filed: July 20, 1977
    Date of Patent: March 16, 1982
    Assignee: Vianova Kunstharz, A.G.
    Inventor: Georgios Pampouchidis
  • Process for the production of polyurethane plastics in which polyisocyanates are reacted with reactive organic fillers comprising biomasses
    Patent number: 4320208
    Abstract: This invention relates to a process for the production of optionally foamed polyurethane plastics, particularly shaped articles, using certain denatured biomasses as reactive fillers. The fillers in question comprise biomasses based on microorganisms and the derivatives and decomposition products of microorganisms, particularly biologically purified sludges, which have been deodorized and irreversibly denatured by reaction with isocyanates and/or carbonyl compounds and compounds capable of aminoplast and/or phenoplast formation.
    Type: Grant
    Filed: May 5, 1980
    Date of Patent: March 16, 1982
    Assignee: Bayer Aktiengesellschaft
    Inventors: Artur Reischl, Kuno Wagner
  • Hot melt adhesive compositions containing a terpene-urethane resin, ethylene copolymer and alkenyl succinic anhydride
    Patent number: 4320211
    Abstract: Hot melt adhesive compositions are provided which contain (a) about 10-30 weight % of an alkenyl succinic anhydride, (b) about 20-60 weight % of an ethylene copolymer, and (c) about 10-40 weight % of a tackifying resin which is a terpene-urethane resin.
    Type: Grant
    Filed: January 28, 1981
    Date of Patent: March 16, 1982
    Assignee: Gulf Oil Corporation
    Inventors: Vikramkumar Acharya, Pallavoor R. Lakshmanan