Patents Examined by Lewis T. Jacobs
  • Patent number: 4981925
    Abstract: Useful as catalysts for the reaction of a polyisocyanate or a partially blocked polyisocyanate with a hydroxy-containing compound are organotin compositions obtained by reacting a diorganotin oxide of the formula R.sub.2 SnO or a diorganotin dichloride of the formula R.sub.2 SnCl.sub.2 with a compound of the formula HS--CH.sub.2 CH(OH)CH.sub.2 XH where R is a C.sub.1 -C.sub.8 alkyl or an aryl group and X is --O-- or --S--.Also disclosed are cationic electrodepositable (CED) compositions containing such catalysts.
    Type: Grant
    Filed: October 20, 1989
    Date of Patent: January 1, 1991
    Assignee: Air Products and Chemicals, Inc.
    Inventors: James D. Nichols, John B. Dickenson
  • Patent number: 4981924
    Abstract: Useful as catalysts for the reaction of a polyisocyanate or a partially blocked polyisocyanate with a hydroxy-containing compound are organotins of the formulaR.sub.2 Sn[X--R.sup.1 --OH].sub.2whereR is a C.sub.1 -C.sub.8 alkyl or an aryl group,R.sup.1 is a C.sub.2 -C.sub.9 divalent hydrocarbyl group which may contain a hydroxyl substituent, andX is a linking group which may be --S-- or --O.sub.2 C--.Also disclosed are cationic electrodepositable (CED) compositions containing such catalysts.
    Type: Grant
    Filed: September 11, 1989
    Date of Patent: January 1, 1991
    Assignee: Air Products and Chemicals, Inc.
    Inventors: James D. Nichols, John B. Dickenson
  • Patent number: 4980401
    Abstract: A thermosetting composition for chemical resistant tile and brick mortar is disclosed. The composition includes a thermosetting resin having a content of 10-25% by weight (and having trace amounts of a promoter such as an amine or amide and optionally having trace amounts of a stabilizer such as cobalt naphthenate) for use with a pre-mixed dry powder comprising the remainder. The pre-mixed dry powder includes an aggregate such as silica having a content of 75-90% by weight, a pigment such as titanium dioxide or iron oxide having a content of 0.25-2% by weight, a catalyst such as benzoyl peroxide having a content of 0.1-4% by weight, and a thickener consisting of organoclay having a content of 1/2-6% by weight.
    Type: Grant
    Filed: October 31, 1988
    Date of Patent: December 25, 1990
    Inventor: Edwin R. Hinden
  • Patent number: 4980393
    Abstract: Improved polymer gels for oil reservoir permeability control have a continuous, cross-linked polymer phase having a relatively low density of cross-linking with domains of clustered, high density cross-linking. The clustered high density cross-linkings contribute to the gel's shear stability and gel strength while the continuous, low density phase contributes to good injectivity. Gels of this kind are produced by cross-linking a base polymer with a relatively low density of cross-linking sites with a reinforcing polymer having a higher cross-linking site density. Suitable polymers have ligand groups which are capable of forming coordination cross-linkages with polyvalent metals, especially chromium and include polyacrylamides as base polymers and polyacrylic acids as reinforcing polymers.
    Type: Grant
    Filed: March 10, 1989
    Date of Patent: December 25, 1990
    Assignee: Mobil Oil Corporation
    Inventor: Paul Shu
  • Patent number: 4980395
    Abstract: This invention concerns a process for the preparation of large surface area, finely divided precipitated calcium carbonate which comprises introducing carbon dioxide into an aqueous slurry of greater than about five weight percent calcium hydroxide containing an anionic organopolyphosphonate polyelectrolyte, starting the introduction at a temperature above about 7.degree. C. and below about 18.degree. C., continuing the introduction until calcite precipitation is substantially complete and adding a quantity of polybasic acid to the slurry in an amount greater than about 0.3% by weight of the precipitated calcium carbonate. This invention also concerns said large surface area, finely divided precipitated calcium carbonate which has been coated with a fatty acid derivative and polymeric compositions which contain such coated calcium carbonate.
    Type: Grant
    Filed: March 8, 1990
    Date of Patent: December 25, 1990
    Assignee: Pfizer Inc.
    Inventors: Krishna K. Mathur, Robert K. Resnik, Randall G. Simmons
  • Patent number: 4980430
    Abstract: This invention relates to epoxy vinyl ethers having the formula: ##STR1## where R is a polyvalent linear, branched or cyclic hydrocarbon radical having from 2 to 20 carbon atoms, optionally substituted with alkyleneoxy; A is branched or linear C.sub.1 to C.sub.4 alkylene; B is halogen or lower alkyl; m has a value of from 0 to 4; n has a value of from 0 to 20; p has a value of from 1 to 5; and T is ##STR2## when p is one, and is ##STR3## or a mixture of ##STR4## and ##STR5## when p is greater than one.
    Type: Grant
    Filed: February 16, 1990
    Date of Patent: December 25, 1990
    Assignee: GAF Chemicals Corporation
    Inventors: Kou-Chang Liu, Fulvio J. Vara, James A. Dougherty
  • Patent number: 4980427
    Abstract: Toughened heat-curable bismaleimide resin systems which contain alkenylphenoxy-terminated polysiloxane modifiers and compatibilizing agents. Cured resin systems exhibit increased toughness without a concomitant decrease in thermal stability at elevated temperatures.
    Type: Grant
    Filed: February 9, 1989
    Date of Patent: December 25, 1990
    Assignee: BASF Aktiengesellschaft
    Inventor: Hong-Son Ryang
  • Patent number: 4980449
    Abstract: Novel polyiminocarbonates having molecular weights exceeding 70,000 daltons. Novel solution polymerization and interfacial polymerization processes for the preparation of polyiminocarbonates in which cyanate compounds are reacted with diphenol compounds in the presence of a strong base catalyst.
    Type: Grant
    Filed: July 14, 1988
    Date of Patent: December 25, 1990
    Assignee: Rutgers, The State University
    Inventors: Joachim B. Kohn, Chun Li
  • Patent number: 4980426
    Abstract: This invention relates to halogen-free binary mixtures of two fully aromatic polycarbonates each having a disperse solubility of from 18 to 35 (J/ccm).sup.1/2, in which both polycarbonates are of high molecular weight and each contains not more than 70 mol-% of bisphenol A. The invention further relates to the use of these mixtures for optical data stores and to moulded parts produced from the mixtures.
    Type: Grant
    Filed: October 10, 1989
    Date of Patent: December 25, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Klaus Berg, Guther Weymans, Ulrich Grigo, Ludwig Bottenbruch
  • Patent number: 4980394
    Abstract: The invention relates to foundry moulding compositions useful for producing moulds for the manufacture of metal castings wherein the moulds are capable of giving castings with good surface finish without the need for conventional separate blacking applications. A foundry moulding composition of the invention comprises refractory material such as sand, alkali phenol-formaldehyde resole resin solution, carbonifiable material such as styrenated phenol, and an effective amount of an organic ester for hardening the composition. In another embodiment, the invention is a binder composition comprising alkali phenol-formaldehyde resole resin solution and carbonifiable material capable of being hardened by reaction with organic ester. In another embodiment, the invention is a curing additive for a foundry binder comprising carbonifiable material and liquid ester such as gamma-butyrolactone, and the like.
    Type: Grant
    Filed: January 11, 1989
    Date of Patent: December 25, 1990
    Assignee: Borden (UK) Limited
    Inventors: Peter H. R. B. Lemon, Jeffrey D. Railton, Derek W. Baker, John Ireland
  • Patent number: 4980400
    Abstract: A trowelable, epoxy-based flooring material exhibits high impact strength, high chemical resistance and a closed exposed surface after curing, and has a hardener component including aliphatic amine and amino silane, a resin component including bisphenol formaldehyde epoxy and monoepoxide and an aggregate component, with the hardener and the resin being present in stoichiometric proportion.
    Type: Grant
    Filed: October 14, 1988
    Date of Patent: December 25, 1990
    Assignee: Stonhard
    Inventors: Frank C. Sessa, Carolyn E. Massey
  • Patent number: 4978720
    Abstract: Copolymers comprising ethylene, alpha-olefin, and olefinic chlorosilane or olefinic hydrocarbon halide, and method of preparing copolymers. The copolymers may be in the form of statistical copolymers, or may be formed of first and second segments. The copolymers are useful in fiberglass and rubber compositions, and for forming graft and block polymers. The copolymers may be cross-linked to form nodular copolymers. The nodular copolymers are particularly useful as lube oil additives.
    Type: Grant
    Filed: June 20, 1988
    Date of Patent: December 18, 1990
    Assignee: Exxon Research and Engineering Company
    Inventors: Charles Cozewith, Shiaw Ju, Gary W. Verstrate
  • Patent number: 4978709
    Abstract: A thermosensitive image transfer recording medium is disclosed, which comprises (i) a heat-resistant support and (ii) a thermofusible ink layer formed on the support, comprising as the main components (a) a binder agent comprising as the main component a low-molecular-weight mixed polyamide having an ether linkage therein, having the formulas,CO--X--COHN--Y--NH (A),CO--X--COHN--Y'--NH (B), andCO--X--CO--Y" (C)wherein S, Y, Y' and Y" are defined in the specification, and (b) a coloring agent.
    Type: Grant
    Filed: December 2, 1988
    Date of Patent: December 18, 1990
    Assignee: Ricoh Company, Ltd.
    Inventors: Keishi Taniguchi, Junko Yamaguchi
  • Patent number: 4978698
    Abstract: Bitumen-polyolefin compositions, e.g. for use as binders in paving compositions, are stabilized by an emulsifier system comprising a polyethylene wax terminally functionalized with acidic groups and having a polymeric main chain structure which is compatible with the polyolefin of the dispersed phase of the binder. In a preferred embodiment, the emulsifier system also includes an inorganic metal compound which will react chemically with the terminal functional groups of the polyethylene wax. Especially preferred is maleated polyethylene wax (as the polyethylene wax) and ferric oxide (as the inorganic metal compound). The emulsifier system forms a sheath of inorganic material around the dispersed polyolefin droplets, to stabilize them and to hinder their floatation to the surface of the binder composition.
    Type: Grant
    Filed: November 10, 1988
    Date of Patent: December 18, 1990
    Assignee: The University of Toronto Innovations Foundation
    Inventor: Raymond T. Woodhams
  • Patent number: 4978700
    Abstract: Extrudable anti-static polyvinyl chloride (PVC) compositions include a quaternary ammonium compound as an anti-static agent, and a barium-cadmium-zinc component as a stablizing agent. The barium-cadmium-zinc component has been found to be critically required in order for the compositions to be processable (e.g., via extrusion) while retaining their desired anti-static characteristics. Shaped articles (e.g., floor mats, door strippings, and the like) may be formed from the compositions of this invention, and use in environments where static-charge dissipation is desired (e.g., computer rooms, hospitals, and the like).
    Type: Grant
    Filed: March 15, 1989
    Date of Patent: December 18, 1990
    Assignee: Edward S. Robbins, III
    Inventor: David L. Haygood
  • Patent number: 4977236
    Abstract: A process for preparation of a copoly(arylene sulfide) corresponding to the structure ##STR1## wherein A is a divalent substituted or unsubstituted aromatic radical, T is a monovalent aromatic radical, x is in the range of 0.5 to 0.001 and n is an integer from 1 to 100.
    Type: Grant
    Filed: December 5, 1989
    Date of Patent: December 11, 1990
    Assignee: Eastman Kodak Company
    Inventors: David R. Fagerburg, Joseph J. Watkins, Paul B. Lawrence, Mark Rule
  • Patent number: 4977224
    Abstract: A process for preparation of a copoly(arylene sulfide) which has a decreased amount of disulfide radicals and corresponds to the structure ##STR1## wherein A is a divalent substituted or unsubstituted aromatic radical, x is in the range of 0.45 to 0 and n is at least 50,comprising contacting a copoly(arylene sulfide) corresponding to the structure ##STR2## wherein A is a divalent substituted or unsubstituted aromatic radical, x is in the range of 0.50 to 0.001 and n is at least 25,in the melt phase with a diiodoaromatic compound corresponding to the structureI-A-IwhereinA is a divalent substituted or unsubstituted aromatic radical.
    Type: Grant
    Filed: November 17, 1989
    Date of Patent: December 11, 1990
    Assignee: Eastman Kodak Company
    Inventors: Joseph J. Watkins, David R. Fagerburg, Paul B. Lawrence, Mark Rule
  • Patent number: 4977223
    Abstract: Provided is a molecular composite comprising a rigid-rod aromatic heterocyclic polymer, a flexible, coil-like thermoplastic polymer and a thermosetting polymer.Also provided is a method for fabricating a molecular composite film or fiber which comprises the steps of forming a biphasic, stir opalescent solution of a rigid-rod aromatic heterocyclic polymer, a thermoplastic polymer, a thermosetting polymer and a solvent which is common to the three polymers, adding solvent to the solution until the solution becomes isotropic and stir opalescence has ceased to determine the critical concentration of polymers in the solvent, adding additional solvent to the solution so that the polymer concentration is below the critical concentration, extruding the solution into a non-solvent for the polymers to form the desired film or fiber, drying the film or fiber and hot drawing the film or fiber at a temperature above the Tg of the thermoplastic, but below the polymerization temperature (Tpoly) of the thermosetting resin.
    Type: Grant
    Filed: February 2, 1989
    Date of Patent: December 11, 1990
    Assignee: The United State of America as represented by the Secretary of the Air Force
    Inventors: Fred E. Arnold, Thaddeus E. Helminiak, Donald R. Wiff, Loon S. Tan, Wen F. Hwang, Hoe Chuah
  • Patent number: 4977229
    Abstract: Contact and intraocular lenses are formed from a polymer formed by polymerizing one or more siloxane monomers of the formula ##STR1## with monomeric crosslinking agents and optionally an acrylic or methacrylic acid ester of a monohydric alkanol. In the above formula G is an electron withdrawing group and the siloxane is a mono- or poly- siloxane group.
    Type: Grant
    Filed: September 22, 1988
    Date of Patent: December 11, 1990
    Assignee: The University of Southern Mississippi
    Inventors: Doris A. Culberson, Lon J. Mathias
  • Patent number: 4977206
    Abstract: A hot melt adhesive and a laminar structure fabricated from a blend comprising a modified or unmodified ethylenic copolymer, a modified or unmodified butene-1 homopolymer or copolymer, a stabilizer and one or more of: a tackifying resin compatible with the major amount of modified polymer, a wax, and atactic polypropylene.
    Type: Grant
    Filed: February 3, 1989
    Date of Patent: December 11, 1990
    Assignee: Shell Oil Company
    Inventors: Charles C. Hwo, Simone Mostert