Patents Examined by Helen Lee
  • Patent number: 5637667
    Abstract: A thermosetting resin composition, containing (A) a thermosetting resin; (B) a curing agent for the thermosetting resin; (C) a polysilane copolymer; and (D) an inorganic filler; wherein the polyailane copolymer (C) is added in amount of about 0.1 to 10% by weight based on the total amount of the resin composition.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: June 10, 1997
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hiroshi Shimozawa, Shinetsu Fujieda, Shuzi Hayase, Yoshihiko Nakano, Akira Yoshizumi, Ken Uchida
  • Patent number: 5635579
    Abstract: Methyl- and phenyl-containing fluorosilicone terpolymeric fluids over the range of 30 cps to 200,000 cps are effective as additives for various uses. Over the range of 16,000 to 200,000 cps, the fluids are effective as additives in promoting a finger transferable self-bleed of lubricant in fluorosilicone-containing heat-curable rubber compositions, even after a post-bake of the composition. Over the viscosity range of 30 cps to 1000 cps, the fluids are useful in personal care and cosmetic products as water and oil repellency additives. Methods of ring opening polymerization are used to produce the terpolymeric fluids from cyclic reactants.
    Type: Grant
    Filed: November 21, 1995
    Date of Patent: June 3, 1997
    Assignee: General Electric Company
    Inventors: Edwin R. Evans, Gregory H. Slocum
  • Patent number: 5635570
    Abstract: A resin composition prepared by simultaneously melting and kneading (A) a polyphenylene ether resin, (B) a polyarylene sulfide resin and (C) a functional compound having a bond or a functional group selected from the group consisting of non-aromatic carbon-carbon multiple bond, oxirane group and derived-carboxyl group and subsequently mixing thereinto (D) a polar compound having, in on molecule, at least two polar groups selected from the group consisting of derived-carboxyl group, derived-hydroxyl group, derived-amino group, derived-mercapto group, derived-sulfonic acid group, oxazoline group, cyanamide group, isocyanate group and oxirane group, provided that at least one of the polar groups is different from at least one of the functional groups which the functional compound (C) has.
    Type: Grant
    Filed: August 15, 1994
    Date of Patent: June 3, 1997
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Hiroomi Abe, Kenji Nagaoka, Takashi Sanada
  • Patent number: 5635259
    Abstract: A resin composition for sealing liquid crystal cells comprising as principal ingredients epoxy resin containing a polysulfide modified epoxy resin, hydrazide compounds and fillers.The said epoxy resin contains a polysulfide modified epoxy resin expressed by the general formula (1) in an amount of 20 to 100% by weight in the entire epoxy resin and the average molecular weight of the entire epoxy resin is between 300 and 3000. Formula (1) is defined as follows: ##STR1## where each of R.sup.1 and R.sup.3 represents at least one organic group selected from a group consisting of bisphenol structures, aliphatic oxyether structures and aliphatic thioether structures and R.sup.2 represents a polysulfide structure expressed by --(C.sub.2 H.sub.4 OCH.sub.2 OC.sub.2 H.sub.4 S.sub.m).sub.n --, wherein m represents the number of sulfur atoms contained in a polysulfide structure, which is 1 or 2, and n represents the average number of polysulfide structures contained in the above formula, which is between 1 and 50.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: June 3, 1997
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Syuji Tahara, Koichi Machida, Seiji Itami, Masayuki Horiuchi
  • Patent number: 5633298
    Abstract: The present invention is directed to an imidized polycarboxylic acid polymer useful as a cement admixture, to improved cement compositions containing said polymer and to a process of forming the same.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: May 27, 1997
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Ahmad Arfaei, David C. Darwin, Ellis M. Gartner, Byong-Wa Chun, Hideo Koyata, Lawrence L. Kuo
  • Patent number: 5631084
    Abstract: The invention relates to a refractory thermally-insulating component consisting essentially of refractory ceramic fibers which are mechanically combined with one another, the composition of which comprises at least 97.5% by weight of alumina, silica and zirconia in total, wherein:a) no organic or inorganic binder binds the fibers to one another;b) the fibers have the following chemical composition, as % by weight:Al.sub.2 O.sub.3 : 33-45%SiO.sub.2 : 41-53%ZrO.sub.2 : 5.5-17%MgO: 0.02-2%other oxides:<0.50% with Fe.sub.2 O.sub.3 +TiO.sub.2 .ltoreq.0.20% and Na.sub.2 O+CaO+K.sub.2 O.ltoreq.0.30%;c) the said fibers homogeneously have, throughout the entire body of the component, a degree of crystallinity of not less than 30% and not more than 64%, the crystals present being essentially formed of mullite crystals and of quadratic zirconia; andd) the said component has a linear shrinkage of no more than 3% after being held for 24 hours at 1450.degree. C.
    Type: Grant
    Filed: December 21, 1994
    Date of Patent: May 20, 1997
    Assignee: Societe Europeenne des Produits Refractaires
    Inventors: Daniel Urffer, Joseph Recasens
  • Patent number: 5626938
    Abstract: A method for producing halogen-free, antimony-free and phosphorous-free polyamide fibers is described by incorporating an additive into the polyamide which comprises a vulcanizable mixture of silicones and a catalyst in a thermoplastic matrix. The fibers have improved flame retardancy and are used for the manufacture of carpets.
    Type: Grant
    Filed: May 16, 1995
    Date of Patent: May 6, 1997
    Assignee: BASF Corporation
    Inventor: Gary W. Shore
  • Patent number: 5618605
    Abstract: A method for producing halogen-free, antimony-free and phorphorous-free polyamide fibers is described by incorporating an additive into the polyamide which comprises a vulcanizable mixture of silicones and a catalyst in a thermoplastic matrix. The fibers have improved flame retardancy and are used for the manufacture of carpets.
    Type: Grant
    Filed: May 16, 1995
    Date of Patent: April 8, 1997
    Assignee: BASF Corporation
    Inventor: Gary W. Shore
  • Patent number: 5604007
    Abstract: A method for producing halogen-free, antimony-free and phosphorous-free polyamide fibers is described by incorporating an additive into the polyamide which comprises a vulcanizable mixture of silicones and a catalyst in a thermoplastic matrix. The fibers have improved flame retardancy and are used for the manufacture of carpets.
    Type: Grant
    Filed: August 19, 1993
    Date of Patent: February 18, 1997
    Assignee: BASF Corporation
    Inventor: Gary W. Shore
  • Patent number: 5604000
    Abstract: This invention provides a heat-sealable, peelable composition comprising ethylene vinyl acetate copolymer, polyethylene based wax and polypropylene. The composition can further comprise a dye or an ink. The composition can be heat-sealed onto a surface of a polymeric bag to provide a peelable seal.A closure arrangement for a polymeric bag with first and second opposing films comprises first and second opposing base strips, a first peelable strip of a first color, and a second peelable strip of a second color. An outer surface of the first base strip is attached to an inner surface of the first film. An outer surface of the second base strip is attached to an inner surface of the second film. The first peelable strip is attached to the inner surface of the first base strip, and the second peelable strip is attached to the inner surface of the second base strip. The first and second peelable strips are disposed between the first and second base strips.
    Type: Grant
    Filed: April 10, 1995
    Date of Patent: February 18, 1997
    Assignee: Reynolds Consumer Products Inc.
    Inventor: Timothy J. May
  • Patent number: 5594075
    Abstract: The compound 2-ethynyl-5-(4-pyridyl)ethynyl thiophene: ##STR1## when incorporated into a thermoplastic polymer having repeating units of the formula: ##STR2## wherein X is --O-- or --S--, and R is selected from the group consisting of: ##STR3## and Ar is selected from the group consisting of: ##STR4## wherein X is as previously defined, poled to align the molecules and cured to crosslink at least the terminal acetylenic groups, has second-order nonlinear optical activity.
    Type: Grant
    Filed: August 7, 1995
    Date of Patent: January 14, 1997
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Bruce A. Reinhardt, Jayprakash C. Bhatt
  • Patent number: 5371111
    Abstract: The method of reprocessing cured polysulfide and polymercaptan elastomers includes reacting an 0.5 to 400 percent-by-weight portion of a polysulfide and/or polymercaptan elastomer with at least one liquid di- or polymercapto compound, with a plasticizer and with a filling material and with an binding agent to form a polysulfide sealing material-base component. Then a polysulfide sealing material curing agent is added to the polysulfide sealing material-base component to form the reprocessed cured polysulfide sealing material with a Shore-A-Hardeness>40 and a tensile strength>1 MPa.
    Type: Grant
    Filed: December 21, 1992
    Date of Patent: December 6, 1994
    Assignee: Metallgesellschaft Aktiengesellschaft
    Inventors: Gerfried Unger, Ralph-Josef Hecktor, Reiner Theobald, Franz Specht