Patents Examined by Allan Lieberman
  • Patent number: 4994508
    Abstract: A composition comprising,(a) 1 to 99 parts by weight of a specific hydrogenated product of a block copolymer having at least one polymer block composed mainly of a vinyl aromatic compound and at least one polymer block composed mainly of a conjugated diene compound, a modified product which comprises said product modified with an .alpha.,.beta.-unsaturated carboxylic acid or a derivative thereof, or a mixture of said product and said modified product, wherein the content of the vinyl aromatic compound prior to hydrogenation is 5 to 95% by weight and a content of vinyl linkages [V] prior to hydrogenation which originated from the conjugated diene compound is 10 to 80%, said product satisfying the following conditions;(1) the hydrogenated ratio [A] of the total of aliphatic double bonds which originated from the conjugated diene compound is not lower than 5% and lower than 50%, and[B]/[V].sup.
    Type: Grant
    Filed: July 14, 1988
    Date of Patent: February 19, 1991
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Toshinori Shiraki, Yasuo Hattori
  • Patent number: 4965304
    Abstract: The present invention concerns a polymeric composition formed from a vinylidene chloride interpolymer; an olefinic wax and oil and, in one embodiment, a salt of an acid; and in another embodiment, a polyolefin containing up to a minor amount of oxygen, said polyolefin being capable of lowering the frictional coefficient and the mechanical energy to extrude of the polymeric composition.
    Type: Grant
    Filed: July 5, 1988
    Date of Patent: October 23, 1990
    Assignee: The Dow Chemical Company
    Inventors: James R. Bethea, Stephen R. Betso
  • Patent number: 4829098
    Abstract: A method of biomolecule immobilization is described in which the biomolecule itself or, alternatively, a monomer-conjugated biomolecule, is grafted with free monomer onto a hydrophilic, solid-phase, polymeric substrate which has been pre-irradiated with ionizing radiation. The pre-irradiation step is carried out, preferably at C. in air, while the grafting step is carried out at C. in a substantially oxygen-free atmosphere. The technique is applicable to immobilization of a wide variety of biomolecules, such as enzymes, catalysts, hormones, lectins, drugs, vitamins, antibodies, antigens, nucleic acids, DNA and RNA segments, pesticides, dyes and fertilizers. The products may be used for therapeutic or diagnostic applications or bioseparations.
    Type: Grant
    Filed: June 19, 1986
    Date of Patent: May 9, 1989
    Assignee: Washington Research Foundation
    Inventors: Allan S. Hoffman, Liang C. Dong
  • Patent number: 4797451
    Abstract: Solid polymeric stabilizer compounds are disclosed comprising an organic polymeric matrix, to which are linked groups containing a sterically hindered aminic function, the organic polymeric matrix being a polymeric matrix of a vinyl-aromatic, aromatic with heteroatoms, dienic or olefinic polymer, containing hydrogen atoms replaceable by metal atoms, the groups containing the sterically hindered aminic function replacing, at least partially, said replaceable-by-metal hydrogen atoms of the matrix.Also disclosed are processes for the preparation of said solid polymeric stabilizers and stabilized polymeric compositions comprising an organic polymer and a stabilizing amount of said solid polymeric stabilizers.
    Type: Grant
    Filed: September 24, 1986
    Date of Patent: January 10, 1989
    Assignee: Eniricerche S.p.A.
    Inventors: Arnaldo Roggero, Guglielmo Bertolini, Carlo Busetto
  • Patent number: 4746475
    Abstract: Disclosed herein are pinhole-free, ultrathin, free-standing cellulose ester films having thicknesses of 400 angstroms or less and a process to prepare them. The films find particular utility in separatory applications.
    Type: Grant
    Filed: October 10, 1986
    Date of Patent: May 24, 1988
    Assignee: Hoechst Celanese Corporation
    Inventor: Rachel S. Kohn
  • Patent number: 4740573
    Abstract: Sulphur-containing polymers of styrene, .alpha.-methyl styrene, p-methyl styrene, vinyl toluene, acrylonitrile or methyl methacrylate or mixtures thereof with a limiting viscosity of from 2 to 15 ml/g (measured in dimethyl formamide at C.) and a sulphur content of from 1.15 to 3.95% by weight, whereby at least 90% by weight of the incorporated sulphur is present as a constituent of terminal C.sub.1-18 -thioalkyl groups.
    Type: Grant
    Filed: February 10, 1986
    Date of Patent: April 26, 1988
    Assignee: Bayer Aktiengesellschaft
    Inventors: Herbert Eichenauer, Alfred Pischtschan, Karl-Heinz Ott
  • Patent number: 4692497
    Abstract: A process for curing a diene polymer including polybutadiene and a metal salt of an alpha, beta ethylenically unsaturated acid using at least two free radical initiators where one initiator has a half life about three times greater than the half life of the other initiator at the same temperature.
    Type: Grant
    Filed: June 27, 1985
    Date of Patent: September 8, 1987
    Assignee: Acushnet Company
    Inventors: Paul M. Gendreau, Francisco M. Llort, Raymond A. Berard
  • Patent number: 4623346
    Abstract: In a therapeutic system such as a plaster for administration of an active compound through the skin and comprising a covering layer which is essentially impermeable to the active compound an active compound reservoir layer and a protective layer which can be pulled off and which is essentially impermeable to the active compound, the improvement wherein the reservoir layer contains about 1-30% of active compound in an elastomer mixture comprising at least one of polyisobutylene, polybutadiene oil and paraffin oil, and a tackifying resin. Thereby the active compound can be released in regulated relatively large quantity over a prolonged period of time.
    Type: Grant
    Filed: November 27, 1984
    Date of Patent: November 18, 1986
    Assignee: Bayer Aktiengesellschaft
    Inventors: Miklos von Bittera, Rolf Dhein, Rolf-Volker Meyer, Roland Rupp
  • Patent number: 4600404
    Abstract: A water dispersible heat activatable adhesive includes a polyethyloxazoline, a compatible water dispersible adhesive and an anti-blocking agent to prevent premature adhesion. This adhesive is particularly beneficial as a coating for flushable tampon tubes.
    Type: Grant
    Filed: November 16, 1984
    Date of Patent: July 15, 1986
    Assignee: Kimberly-Clark Corporation
    Inventors: Donald A. Sheldon, Bruce G. Stokes, Robert E. Weber, Edwin G. Greenman
  • Patent number: 4528301
    Abstract: A new contact lens material that is gas permeable, surface wettable, and relatively hard is disclosed. Also disclosed are contact lenses made of this new material, which are comfortable to wear. The new contact lens material is the copolymerization product of a reaction mixture comprising: (1) styrene or a ring substituted styrene; (2) a vinyl alcohol ester such as vinyl acetate; (3) a polyethylene glycol ester such a pentaethyleneglycol monomethacrylate; (4) a substituted polysiloxane such as dimethyl polysiloxane or a substituted silane; and, optionally, (5) a cross-linking agent such as divinyl benzene.
    Type: Grant
    Filed: June 23, 1983
    Date of Patent: July 9, 1985
    Assignee: GBF, Inc.
    Inventor: Billy T. Upchurch
  • Patent number: 4492586
    Abstract: Dispersants, especially well suited for use with insoluble dyes, are produced by reacting hydroxyl benzyl alcohol compounds with sulfonated lignin derivatives. The dispersants have high levels of heat stability, coupled with desirable dye reduction, staining, foaming, milling and viscosity-reducing properties. Dyestuffs, dye pastes and dye baths, as well as methods utilizing them, are provided.
    Type: Grant
    Filed: June 25, 1981
    Date of Patent: January 8, 1985
    Assignee: Reed Lignin, Inc.
    Inventor: Stephen Y. Lin
  • Patent number: 4486503
    Abstract: Silicone resin coating compositions, which when applied to a solid substrate provide an abrasion resistant coating thereto, are disclosed herein. The coating compositions have a basic pH in the range of from 7.1-7.8 and are prepared by hydrolyzing an alkyltrialkoxysilane or aryltrialkoxysilane in an aqueous colloidal silica dispersion.
    Type: Grant
    Filed: September 8, 1982
    Date of Patent: December 4, 1984
    Assignee: General Electric Company
    Inventor: Howard A. Vaughn, Jr.
  • Patent number: 4483951
    Abstract: This disclosure relates to novel adhesive compositions and composite structures utilizing the same, wherein said adhesive compositions contain an elastomer, a chemically compatible ethylenically unsaturated monomer, a tackifier, an adhesion promoter, and optionally, pigments, fillers, thickeners and flow control agents which are converted from the liquid to the solid state by exposure to high energy ionizing radiation such as electron beam. A particularly useful application for such adhesive compositions comprises the assembly of certain composite structures or laminates consisting of, for example, a fiber flocked rubber sheet and a metal base with the adhesive fulfilling the multiple functions of adhering the flocked fiber to the rubber sheet as well as adhering the rubber sheet to the metal base.
    Type: Grant
    Filed: December 2, 1981
    Date of Patent: November 20, 1984
    Assignee: The Standard Products Company
    Inventor: Walter Brenner
  • Patent number: 4481335
    Abstract: A rubber molding composition comprising cured rubber scrap (as from automobile tires), a liquid, sulfur-curable polymeric binder, and a curing agent for the polymeric binder. The composition employs from about one to about five parts by weight of the polymeric binder per 100 parts by weight of the scrap rubber. The thus treated rubber scrap may be used in large proportions as a filler or extender for uncured rubbers.
    Type: Grant
    Filed: August 10, 1981
    Date of Patent: November 6, 1984
    Inventor: Fred J. Stark, Jr.
  • Patent number: 4477534
    Abstract: Air-drying resins such as acrylate- or methacrylate-acid drying-oil resins and alkyds can be blended with up to 70% by weight of the combined weights of a vinyl oxazoline ester as a reactive diluent. In an organic solvent, the blend produces a suspension or solution which has a lower viscosity than a suspension or solution of resin alone but with the same percentage of solids. When applied to a substrate, the blend dries in air to a good protective and ornamental coating. The oxazoline ester can be combined with up to about twice its weight of certain melamine condensates.
    Type: Grant
    Filed: October 18, 1982
    Date of Patent: October 16, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Joseph A. Antonelli, Joseph E. McLaughlin, Clifford H. Strolle
  • Patent number: 4477630
    Abstract: A resin composition excellent in sliding characteristics, composed of 95 to 30% by weight of an aromatic polysulfone, 2.5 to 60% by weight of a fluorocarbon polymer and 2.5 to 60% by weight of an oxybenzoyl polyester.
    Type: Grant
    Filed: March 9, 1983
    Date of Patent: October 16, 1984
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Teruo Saito, Kuniaki Asai, Isamu Nakagawa, Tadayasu Kobayashi
  • Patent number: 4474857
    Abstract: A silicone resin coating composition is provided which provides a tough, abrasion-resistant coating when applied to a solid substrate. The coating composition has a basic pH in the range of from 7.1-7.8 and is prepared by hydrolyzing an alkyltrialkoxysilane or aryltrialkoxysilane in an aqueous colloidal silica dispersion. A thickening agent and an ultraviolet light screening agent are added to the resultant hydrolysis product.
    Type: Grant
    Filed: January 6, 1984
    Date of Patent: October 2, 1984
    Assignee: General Electric Company
    Inventor: Howard A. Vaughn, Jr.
  • Patent number: 4473671
    Abstract: A cast material comprising a filled crystalline polyurethane is disclosed. The filler is present in an amount of from 30% to 60% by weight composition. The filler comprises from 20% to 60% by weight of calcium metasilicate fibers and from C. to C. by weight of silica.
    Type: Grant
    Filed: September 1, 1983
    Date of Patent: September 25, 1984
    Assignee: Johnson & Johnson Products, Inc.
    Inventor: Richard Green
  • Patent number: 4472557
    Abstract: A fluorohydrocarbon resin that has elasticity and retains favorable properties of known fluorohydrocarbon polymers is obtained by graft copolymerization of a fluorine-containing elastomeric polymer with a fluorine-containing crystalline polymer. One of the elastomeric and crystalline polymers is prepared by copolymerizing at least one fluorine-containing monomer with at least one unsaturated monomer that has peroxy bond. When the elastomeric polymer is employed as the basic polymer and the crystalline polymer is polyvinylidene fluoride, the graft copolymerized fluorohydrocarbon resin is high in mutual solubility with polyvinylidene fluoride, so that the addition of this resin to polyvinylidene fluoride gives a resin composition which has elasticity and good low temperature characteristics.
    Type: Grant
    Filed: May 19, 1983
    Date of Patent: September 18, 1984
    Assignee: Central Glass Company, Limited
    Inventors: Chikashi Kawashima, Takashi Yasumura
  • Patent number: 4471086
    Abstract: The hot-melt adhesives of the present invention comprise a blend of at least one polyethylene, a tackifying resin, a high density, low viscosity polyethylene wax having a molecular weight of about 1000, and a Fischer-Tropsch hydrocarbon wax. This hot-melt adhesive has a novel combination of properties such as low viscosity and fast setting which meet the requirements necessary for use in rapid bonding or closing in low temperature applications.
    Type: Grant
    Filed: November 9, 1983
    Date of Patent: September 11, 1984
    Assignee: Eastman Kodak Company
    Inventor: Bruce W. Foster