Patents Examined by Melvyn J. Marquis
  • Patent number: 5492956
    Abstract: Method of preparing a wet-strength resin of the polyamine-epichlorohydrin type in which the E/N ratio is from about 1.0 to about 1.20 and the reaction temperature is no higher than C., and wet-strength resins having high wet-strength and low amounts of chlorinated compounds produced by said method.
    Type: Grant
    Filed: February 21, 1995
    Date of Patent: February 20, 1996
    Assignee: Henkel Corporation
    Inventors: Nancy S. Clungeon, Stephen A. Fischer
  • Patent number: 5475044
    Abstract: Addition-curable platinum group metal catalyzed silicone compositions are provided which utilize a bis(trialkyloxysilyl)alpha-amino ester as an adhesion promoter. Cohesive bonding is effected on both plastic and metal substrates at temperatures of about C. in an hour or less.
    Type: Grant
    Filed: December 29, 1994
    Date of Patent: December 12, 1995
    Assignee: General Electric Company
    Inventor: Judith Stein
  • Patent number: 5468815
    Abstract: A curable coating composition comprising an ethylenically unsaturated organopolysiloxane base polymer, an organohydrogenpolysiloxane crosslinking agent, an effective amount of a precious metal containing hydrosilylation catalyst, and from 0.1 to 20 weight of a higher alkenyl-functional organopolysiloxane gum. The incorporation of the gum provides a composition which cures rapidly to a low coefficient of friction coating having stable release over time.
    Type: Grant
    Filed: January 12, 1994
    Date of Patent: November 21, 1995
    Assignee: Minnesota Mining and Manufacturing
    Inventors: Larry D. Boardman, Kurt C. Melancon, Trang D. Chau, John J. Erickson
  • Patent number: 5384356
    Abstract: A liquid coating composition for the formation of a liquid crystal display element insulating film, which comprisesa) hydrolyzed product of tetraalkoxysilane of the general formula (1) below and trialkoxysilane of the general formula (2) below,b) an aluminum salt, andc) a deposition inhibitor, dissolved in an organic solvent.Si(OR).sub.4 (1)wherein R represents a C1-5 alkyl groupR.sup.1 Si(OR.sup.2).sub.3 (2)wherein R.sup.1 represents an alkyl, alkenyl or aryl group, and R.sup.2 represents a C1-5 alkyl group. The liquid coating composition according to the present invention is useful as an insulating film for a liquid crystal display element, as it exerts no adverse influence on the display property thereof.
    Type: Grant
    Filed: January 11, 1993
    Date of Patent: January 24, 1995
    Assignee: Nissan Chemical Industries, Ltd.
    Inventors: Tatsuya Nogami, Rie Sakai
  • Patent number: 5350784
    Abstract: A two-component water-dispersible coating composition based on a blend of a water compatible polyamine-epoxy adduct and a resin compatible polyamine-epoxy adduct, and a polyepoxide resin. The water compatible polyamine-epoxy adduct is formed by reacting a polyamine having primary amine groups with a mixture of a monoepoxide and polyepoxide in which the amounts of monoepoxide and polyepoxide are such that the monoepoxide reacts with 10 to 50% of the primary amine groups and the polyepoxide reacts with 5 to 65% of the remaining primary amine groups. The resin compatible polyamine-epoxy adduct is formed by reacting a polyamine having primary amine groups with a monoepoxide or a polyepoxide in an amount which provides from about 0.4 to 1 equivalents epoxide per primary amine group. The amount of polyepoxide resin is such that there is from about 0.5 to 1.5 equivalents epoxide per active hydrogen equivalent.
    Type: Grant
    Filed: May 13, 1993
    Date of Patent: September 27, 1994
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Stuart P. Darwen, David A. Cornforth
  • Patent number: 5336701
    Abstract: A process is provided for producing improved color acrylonitrile polymer gels involving compounding a composition of an acrylonitrile polymer with an electrophilic reagent to produce acrylonitrile polymer gels, and admixing water with the gels to reduce the yellowness thereof. Improved color, reduced gloss polycarbonate/graft polymer blends are provided by compounding the resultant gels with polycarbonate, a styrene-acrylonitrile copolymer and ABS graft polymer to form reduced gloss PC/ABS/SAN composition. The process provides acrylonitrile gels and reduced gloss compositions exhibiting improved levels of color. The blend compositions are useful as molding resins and the gelled acrylonitrile polymer is useful as a gloss reducing additive.
    Type: Grant
    Filed: September 28, 1992
    Date of Patent: August 9, 1994
    Assignee: General Electric Company
    Inventors: Robert H. Wildi, Keith E. Cox, Jack A. Hill
  • Patent number: 5336716
    Abstract: The invention relates to paints comprising(i) a resin (A) which contains hydroxyl groups and .alpha.,.beta.-unsaturated carbonyl groups or a mixture of such resins, and/or(ii) a mixture consisting ofa) a hydroxyl-containing resin (B) or a mixture of such resins andb) a crosslinking agent (C) which contains .alpha.,.beta.-unsaturated carbonyl groups or a mixture of such crosslinking agents and(iii) a catalyst (D) which catalyzes the reaction of hydroxyl groups with .alpha.,.beta.-unsaturated carbonyl groups or a mixture of such catalysts.The invention is characterized in that the catalyst (D) is a Bronsted acid.
    Type: Grant
    Filed: February 25, 1993
    Date of Patent: August 9, 1994
    Assignee: BASF Lacke + Farben Aktiengesellschaft
    Inventors: Elisabeth Kappes, Ulrich Poth
  • Patent number: 5324814
    Abstract: Disclosed herein is a process for the production of an arylene thioether copolymer (C), wherein an alkali metal sulfide is caused to act on a poly(arylene thioether) (A) having predominant recurring units of the formula [I]: ##STR1## wherein R denotes an alkyl group having 1-6 carbon atoms, and 1 stands for 0 or an integer of 1-4, in a water-containing polar organic solvent so as to depolymerize the poly(arylene thioether) (A), thereby preparing a prepolymer (B) having an alkali thiolate group on at least one terminal thereof and the resultant prepolymer (B) is then subjected to a polymerization reaction with at least one dihalogen-substituted aromatic compound.
    Type: Grant
    Filed: April 18, 1991
    Date of Patent: June 28, 1994
    Assignee: Kureha Kagaku Kogyo K. K.
    Inventors: Yukichika Kawakami, Mitsuru Hoshino, Yoshikatsu Satake
  • Patent number: 5300569
    Abstract: Uncured adhesive elastomeric compositions are provided comprising an unsaturated polymeric dicarboxylic acid or derivative adduct and an elastomer. These compositions are capable of adhesion to a broad, general range of materials and are useful for bonding elastomers to other elastomers, to plastic materials, to metal, fabrics, fibers, paper and miscellaneous substrates. These materials can also be bonded to each other using a film or spreadable liquid comprised of a composition of this invention and curing said film or liquid in contact with said substrates.
    Type: Grant
    Filed: February 10, 1993
    Date of Patent: April 5, 1994
    Assignee: Ricon Resins, Inc.
    Inventors: Ronald E. Drake, John M. Labriola
  • Patent number: 5109093
    Abstract: A process for the preparation of an organosilicon condensation product which comprises reacting together at a temperature of at least C. (A) an organosilicon compound having in the molecule at least one silicon-bonded hydroxyl group; and (B) an organosilicon compound having in the molecule at least one silicon-bonded --OX group, in which X respresents an alkyl group having from 1 to 8 carbon atoms or an alkoxyalkyl group having from 2 to 8 carbon atoms, in the presence of a catalytic substance which is selected from strontium hydroxide and barium hydroxide.
    Type: Grant
    Filed: January 31, 1990
    Date of Patent: April 28, 1992
    Assignee: Dow Corning Limited
    Inventors: Sian B. Rees, Stephen Westall
  • Patent number: 5051455
    Abstract: A moisture curing silicone sealant which adheres to a variety of substrates is produced by a method which first mixes a trialkoxysilethylene endblocked polydiorganosiloxane, a trialkoxysilane crosslinker, and a beta-dicarbonyl titanium catalyst, then adds a precipitated calcium carbonate filler having a fatty acid treated surface.
    Type: Grant
    Filed: January 16, 1990
    Date of Patent: September 24, 1991
    Assignee: Dow Corning Corporation
    Inventors: Hsien-Kun Chu, Russell P. Kamis, Loren D. Lower
  • Patent number: 5028661
    Abstract: Compounds useful as adhesion promoters for thermally cured thiolene adhesives include a) acrylic or norbornene acid phosphate esters such as ##STR1## b) maleic, acrylic, methacrylic, norbornene dicarboxylic, and fumaric acids and half acid esters and peresters of maleic fumaric and norbornene dicarboxylic acids; and c) norbornene, acrylic or methacrylic silanes having two or three hydrolyzable groups bound to the silicon atom thereof, such as 5-(triacetoxysilyl) norbornene.The adhesion promoters may be employed as surface primers for conventional thiolene compositions. Alternatively the thiolene compositions themselves may be modified by addition of 0.1 to 10% by weight of the adhesion promoter. Preferred thiolene compositions employ norbornene functional ene ingredients.
    Type: Grant
    Filed: November 27, 1989
    Date of Patent: July 2, 1991
    Assignee: Loctite Corporation
    Inventors: Paul J. Clark, Anthony F. Jacobine, David M. Glaser
  • Patent number: 4892918
    Abstract: Secondary-amino-functional organosilicone are prepared by the reaction of an N-substituted, secondary allylamine with an Si-H functionalized organosilicone particularly a di- or polysiloxane. The resulting products are useful in toughening thermosetting matrix resins, particularly epoxy resins.
    Type: Grant
    Filed: May 29, 1987
    Date of Patent: January 9, 1990
    Assignee: BASF Corporation
    Inventor: Hong-Son Ryang
  • Patent number: 4803244
    Abstract: A process for the preparation of a thermoplastic elastomer comprising admixing, under reaction conditions, an unsaturated elastomer containing carbon-carbon double bonds; an essentially saturated thermoplastic homopolymer or copolymer; a multifunctional organosilicon compound containing an average of at least two Si--H groups per molecules; and a catalyst capable of hydrosilylating the carbon-carbon double bonds of the unsaturated elastomer.
    Type: Grant
    Filed: November 16, 1987
    Date of Patent: February 7, 1989
    Assignee: Union Carbide Corporation
    Inventor: Jeffrey D. Umpleby
  • Patent number: 4737561
    Abstract: A process for producing room temperature-vulcanizable silicone compositions which comprises mixing, in a first step, crosslinkable diorgano(poly)siloxanes, filler(s) and either catalyst(s) or crosslinking agent(s) and a part or all of the optional additives to be used in a continuusly operating closed mixer, and in a second step, metering the crosslinking agents and/or catalyst(s) not added in the first step and the remainder of the optional additivies to be used into the mixture thus obtained in an oscillating pilgrim-step kneader where the mixture is homogenized and degassed.
    Type: Grant
    Filed: December 31, 1986
    Date of Patent: April 12, 1988
    Assignee: Wacker-Chemie GmbH
    Inventors: Fridolin Stary, Peter Kremer
  • Patent number: 4468492
    Abstract: A low temperature curing composition prepared from an essentially silicon-free polymer and a silicon group-containing material is improved by utilizing a silicon group-containing material which is a hydrolyzable organosilicon group-containing polymer which is non-gelled and formed from an essentially silicon-free polymer having isocyanate or active hydrogen functional groups and an organosilicon group-containing material having functional groups reactive with the isocyanate and active hydrogen.
    Type: Grant
    Filed: July 15, 1983
    Date of Patent: August 28, 1984
    Assignee: PPG Industries, Inc.
    Inventors: Robert Piccirilli, Wen-Hsuan Chang
  • Patent number: 4370429
    Abstract: Quaternized ammonium synthetic polymers having a solution viscosity, as measured on a 1% solution in deionized water at C. using a suspended level viscometer of from 1 to 500 cs are used as dispersing agents in aqueous slurries of water and solid particulate carbonaceous material.
    Type: Grant
    Filed: May 27, 1981
    Date of Patent: January 25, 1983
    Assignee: Allied Colloids Limited
    Inventors: John B. Clarke, Leslie Pitts
  • Patent number: 4152115
    Abstract: Water repellancy is imparted to fibrous cellulosic textile material by applying to it, for a very short period of time, an isopropenyl ester containing a catalytic amount of an acid catalyst and then heat curing the treated material. Excellent water repellancy is obtained at a very low degree of substitution and a high degree of retention of tensile strength.
    Type: Grant
    Filed: February 15, 1978
    Date of Patent: May 1, 1979
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Leonard S. Silbert, Samuel Serota, Gerhard Maerker