Patents Represented by Attorney, Agent or Law Firm Alexander Weitz
  • Cycloalkoxysilanes
    Patent number: 5175332
    Abstract: A cycloalkoxysilane, having utility as an electron donor in the Ziegler-Natta polymerization of olefinic monomers, of the structure(R'O).sub.x (R').sub.y Si(OR).sub.4-x-ywherein R is independently selected from the group consisting of alkyl radicals having 1 to 5 carbon atoms and acyl radicals having 2 to 5 carbon atoms, R' is independently selected from the group consisting of a cyclopentyl radical, a cyclohexyl radical a cycloheptyl radical, and substituted radicals thereof, x is 1, 2, 3 or 4 and y is 0, 1 or 2.
    Type: Grant
    Filed: December 16, 1991
    Date of Patent: December 29, 1992
    Assignee: Dow Corning Corporation
    Inventors: Wayne J. Chatterton, Sean P. Davern, Carl A. Fairbank, Terrence K. Hilty
  • Organopolysiloxane/acrylate ester copolymer emulsion
    Patent number: 5171638
    Abstract: An organopolysiloxane/acrylate ester copolymer emulsion composition is prepared by forming a water-based emulsion of an alkenyl-containing organopolysiloxane containing no more than 5,000 parts per million of organosiloxane oligomer which has .ltoreq.20 silicon atoms in its molecule and copolymerizing the emulsion with an acrylate ester monomer. The resultant copolymer does not suffer from disadvantages of prior art systems, such as staining in applications as a paint or water repellent, staining in fiber treatment applications, or reduction of adhesion when the copolymer is used as a release coating.
    Type: Grant
    Filed: July 22, 1991
    Date of Patent: December 15, 1992
    Assignee: Dow Corning Toray Silicone Co., Ltd.
    Inventors: Masaru Ozaki, Tsutomu Naganawa, Isao Ona
  • Method for the preparation of organopolysiloxane
    Patent number: 5169909
    Abstract: A method for the preparation of an organopolysiloxane which contains in each molecule at least one phenyl group and at least one silicon-bonded hydrogen atom is disclosed, said method comprising reacting (I) an organopolysiloxane having a molecular weight not exceeding 100,000 and containing in each molecule at least one phenyl group and at least one alkoxy group with (II) 1,1,3,3-tetramethyldisiloxane, wherein the reaction is carried out in the presence of an aqueous hydrochloric acid solution, this aqueous solution preferably further comprising an alcohol.
    Type: Grant
    Filed: January 27, 1992
    Date of Patent: December 8, 1992
    Assignee: Dow Corning Toray Silicone Co., Ltd.
    Inventor: Tadashi Okawa
  • Moisture-curable silicone corrosion resistant coatings
    Patent number: 5162460
    Abstract: A method for imparting corrosion resistance to a metal substrate comprising coating said substrate with a moisture-curable silicone composition is disclosed. The composition consists essentially of a tetrafunctional or hexafunctional silicone polymer (I) which is modified with a liquid organohydrogenpolysiloxane (II) such that, when the functional groups of (I) are alkoxy radicals, the organohydrogenpolysiloxane contains at least 4 silicon hydride groups per molecule and when the functional groups of (I) are oxime groups, the organohydrogenpolysiloxane contains at least 5 silicon hydride groups per molecule.
    Type: Grant
    Filed: October 17, 1991
    Date of Patent: November 10, 1992
    Assignee: Dow Corning Corporation
    Inventors: Paul J. Popa, Harold L. Vincent, Anh Be
  • Bladder lubricant composition for tire molding
    Patent number: 5152950
    Abstract: An improved bladder lubricant composition is disclosed which provides durable release of bladders from cured rubber tires in the manufacture of the latter. The composition comprises (A) an organopolysiloxane resin consisting essentially of phenylsilsesquioxane units and dimethylsiloxane units; (B) an organosilane having trioxime or trialkoxy functionality; (C) a condensation catalyst; and, optionally, (D) at least one diorganopolysiloxane having hydroxyl or alkoxy terminal groups.
    Type: Grant
    Filed: August 16, 1991
    Date of Patent: October 6, 1992
    Assignee: Dow Corning Toray Silicone Company, Ltd.
    Inventors: Isao Ona, Tsutomu Naganawa
  • Organocyclosiloxane and method for its preparation
    Patent number: 5153332
    Abstract: An organocyclosiloxane is disclosed which has both silicon-bonded alkoxy groups and organofunctional groups within each molecule. This cyclic siloxane finds utility as a coupling agent and has the general formula ##STR1## wherein R.sup.1 is independently selected from the group consisting of a monovalent hydrocarbon group having 1 to 8 carbon atoms and a monovalent halogen-substituted hydrocarbon group having 1 to 8 carbon atoms, R.sup.2 is selected from the group consisting of an alkoxy group and an alkoxysilylalkyl group, R.sup.3 is an organofunctional group selected from the group consisting of glycidoxyalkyl groups, methacryloxyalkyl groups, N-(trialkylsilyl)aminoalkyl groups, (hydroxyphenyl)alkyl groups, and haloalkyl groups and n and m each represent an integer having a value of 1 to 6 with the proviso that n+m is an integer with a value of 3 to 8.
    Type: Grant
    Filed: September 10, 1991
    Date of Patent: October 6, 1992
    Assignee: Dow Corning Toray Silicone Company, Ltd.
    Inventors: Hiroji Enami, Shoji Akamatsu
  • Method for preparing oximosilane-functional vinylic copolymers
    Patent number: 5145912
    Abstract: An efficient method for preparing an oximosilane-functional vinylic copolymer is disclosed wherein the corresponding alkoxysilane-functional vinylic copolymer is reacted with an organoketoxime in a dry environment. The oximosilane-functional vinylic copolymers produced by the method of the present invention find utility in moisture-curable coating systems.
    Type: Grant
    Filed: December 17, 1990
    Date of Patent: September 8, 1992
    Assignee: Dow Corning Corporation
    Inventors: Dale E. Hauenstein, Harold L. Vincent
  • Aqueous siliocone-organic hybrids
    Patent number: 5145898
    Abstract: The present invention relates to hybrid aqueous silicone-organic composition which are prepared by first forming a silicone oil-in-water emulsion by dispersing an oil phase, containing a silicone polymer and a specific non-ionic surfactant, in a water phase containing a poly(vinyl alcohol) dissolved in water. This silicone emulsion is subsequently mixed with a an aqueous solution of a water-soluble polymer to form the instant compositions which can be applied to substrates to provide coatings having heat resistance comparable to conventional all-silicone systems delivered from organic solvent solution.
    Type: Grant
    Filed: October 31, 1990
    Date of Patent: September 8, 1992
    Assignee: Dow Corning Corporation
    Inventors: Dipak Narula, Shedric O. Glover, Arthur J. Tselepis
  • Postemergent herbicide compositions containing silicone glycol adjuvants
    Patent number: 5145978
    Abstract: There is disclosed a herbicide composition in which a postemergent herbicide is activated by the inclusion of a silicone glycol adjuvant consisting essentially of (i) a silicone glycol having an average of 4 or 5 ethylene oxide units in its glycol chain and (ii) a silicone glycol dispersant compound for component (i). The composition provides enhanced phytotoxicity in the control of weeds, particularly velvetleaf plants, and shows an improved degree of rainfastness relative to prior art compositions.
    Type: Grant
    Filed: February 11, 1991
    Date of Patent: September 8, 1992
    Assignee: Dow Corning Corporation
    Inventors: Lenin J. Petroff, David J. Romenesko, Robert A. Ekeland
  • Postemergent herbicide compositions containing acetoxy-terminated silicone glycol and dispersant
    Patent number: 5145977
    Abstract: There is disclosed a herbicide composition in which a postemergent herbicide is activated by the inclusion of a silicone glycol adjuvant consisting essentially of (i) a silicone glycol having an average structure ##STR1## wherein Me denotes a methyl radical, and (ii) a silicone glycol dispersant compound for component (i). When compared to similar prior art silicone glycol adjuvants not having an acetoxy terminated glycol chain, the compositions of the present invention provide enhanced rainfastness in the control of weeds, particularly velvetleaf plants.
    Type: Grant
    Filed: February 26, 1990
    Date of Patent: September 8, 1992
    Assignee: Dow Corning Corporation
    Inventors: Lenin J. Petroff, David J. Romenesko, Bradley C. Bahr
  • Shipping package combination
    Patent number: 5144897
    Abstract: A shipping combination is disclosed wherein a conventional wooden pallet capable of supporting a plurality of barrels is removably affixed to a tray, having essentially the same shape and dimensions as said pallet, for receiving said barrels. The tray has a plurality of raised abutments projecting from its interior surface for engaging the vertical outside surfaces of the barrels, thereby maintaining said barrels in a substantially fixed relative position.
    Type: Grant
    Filed: September 24, 1991
    Date of Patent: September 8, 1992
    Assignee: Dow Corning Corporation
    Inventor: Ragnar R. Avery
  • Chloroformyl-functional organopolysiloxane
    Patent number: 5136067
    Abstract: There is disclosed an organopolysiloxane having a molecular weight of 200 to 100,000 which contains at least one silicon-bonded, chloroformyl group-containing organic group, said organopolysiloxane being prepared by reacting (I) the corresponding organopolysiloxane which contains at least one silicon-bonded, triorganosiloxycarbonyl group-containing organic group; and (II) an inorganic halide, such as thionyl chloride. By virtue of its highly reactive chloroformyl group, the organopolysiloxane of the invention find utility as modifiers for polyamide resins, polyester resins, and the like.
    Type: Grant
    Filed: January 22, 1991
    Date of Patent: August 4, 1992
    Assignee: Dow Corning Toray Silicone, Ltd.
    Inventor: Tadashi Okawa
  • Silicone fluid compositions having reduced viscosity temperature coefficient
    Patent number: 5130041
    Abstract: Silicone hydraulic compositions, comprising a polydimethylsiloxane fluid and a phenylmethylsiloxane/dimethylsiloxane copolymer having a viscosity at least ten fold greater than said polydimethylsiloxane fluid and having a molar phenylmethylsiloxane content of about 4.5 percent to about 7 percent are disclosed. The fluids exhibit a reduced viscosity temperature coefficient (VTC) relative to conventional polydimethylsiloxane oils and are useful in hydraulic applications such as viscous coupling and viscous damping.
    Type: Grant
    Filed: June 21, 1990
    Date of Patent: July 14, 1992
    Assignee: Dow Corning Corporation
    Inventor: Eugene D. Groenhof
  • Polydimethylsiloxane terminated at one end by a branched aminoalkyl group and preparation thereof
    Patent number: 5118777
    Abstract: A polydimethylsiloxane compound terminated at one end by a branched aminoalkyl group, having the average formula ##STR1## wherein R.sup.1 and R.sup.4 are monovalent hydrocarbon groups having 1 to 20 carbon atoms, R.sup.2 and R.sup.3 are alkylene groups having at least two carbon atoms, Me is a methyl radical, m is an integer between 6 and 1,000 and n is an integer between zero and 6, is disclosed. The polydimethylsiloxane of the invention can be easily prepared by the method described and imparts improved surface properties, such as water repellency and slipperiness, to organic resins modified therewith.
    Type: Grant
    Filed: November 13, 1990
    Date of Patent: June 2, 1992
    Assignee: Toray Dow Corning Silicone
    Inventor: Tadashi Okawa
  • Pressure-sensitive composition containing an aminoxysilicon compound
    Patent number: 5086103
    Abstract: The invention relates to a method of contacting two components to form a pressure-sensitive adhesive (PSA) construction, wherein the first component comprises a conventional PSA and an aminoxysilicon compound and a second component comprises the same PSA and an amidosilicon compound. The method provides improved adhesive bond strength over an unmodified PSA construction.
    Type: Grant
    Filed: April 24, 1990
    Date of Patent: February 4, 1992
    Assignee: Dow Corning Corporation
    Inventors: John D. Blizzard, Terence J. Swihart
  • Polish compositions
    Patent number: 5085694
    Abstract: An improved polish having improved rub-out characteristics results when a silylated polyether film former is incorporated into a conventional polish formulation. The silylated polyether contains at least one polyoxyalkylene block selected from the group consisting of polyoxyethylene and polyoxypropylene in its molecule wherein the polyoxyalkylene block is attached through an organic connecting group to a silicon atom bearing at least one hydrolyzable group. A preferred water-in-oil emulsion embodiment of the polish is particularly suitable for automotive or marine applications.
    Type: Grant
    Filed: March 4, 1991
    Date of Patent: February 4, 1992
    Assignee: Dow Corning Corporation
    Inventor: Martin E. Cifuentes
  • Organopolysiloxane graft polyester and its manufacturing method
    Patent number: 5082916
    Abstract: An organopolysiloxane graft-type polyester is prepared by reacting, in the presence of an effective amount of a hydrosilylation catalyst, a polyester containing at least one alkenyl group and having no unsaturated terminal groups, said polyester having a number average molecular weight of about 500 to about 5,000, and an organopolysiloxane containing one hydrosilyl group. The organopolysiloxane graft-type polyester has excellent compatibility with polyesters and can improve the surface smoothness and hydrophobic property of the polyester when modified therewith.
    Type: Grant
    Filed: May 11, 1990
    Date of Patent: January 21, 1992
    Assignee: Dow Corning Toray Silicone Company, Ltd.
    Inventors: Ryuzo Mikami, Makoto Yoshitake, Tadashi Okawa
  • Epoxy resin compositions
    Patent number: 5075357
    Abstract: A water resistant epoxy resin composition is disclosed, said composition comprising an epoxy resin, a compound having at least two phenolic hydroxyl groups sufficient to cure the epoxy resin component, an aromatic nitrogen-containing silane coupling agent and an inorganic filler. The epoxy resin composition is well suited for use as a sealant for electronic components.
    Type: Grant
    Filed: September 17, 1990
    Date of Patent: December 24, 1991
    Assignee: Dow Corning Toray Silicone Company, Ltd.
    Inventors: Hiroji Enami, Takeshi Imai
  • Bladder lubricant composition for tire molding
    Patent number: 5073608
    Abstract: An improved bladder lubricant composition is disclosed which provides durable release of bladders from cured rubber tires in the manufacture of the latter. The composition comprises (A) an organopolysiloxane resin consisting essentially of phenylsilsesquioxane units and dimethylsiloxane units; (B) an organosilane having trioxime or trialkoxy functionality; (C) a condensation catalyst; and, optionally, (D) at least one diorganopolysiloxane having hydroxyl or alkoxy terminal groups.
    Type: Grant
    Filed: May 9, 1990
    Date of Patent: December 17, 1991
    Assignee: Dow Corning Toray Silicone Company, Ltd.
    Inventors: Isao Ona, Tsutomu Naganawa
  • Foliar-applied herbicidal compositions containing a silicone glycol-silicone alkane terpolymer adjuvant
    Patent number: 5059704
    Abstract: There is disclosed a herbicidal composition in which a foliar-applied herbicide is activated by the inclusion of a silicone glycol-silicone alkane terpolymer adjuvant. The composition provides enhanced phytotoxicity in the control of narrowleaf weeds, particularly Barnyardgrass, Quackgrass and Johnsongrass, and often also shows an improved degree of rainfastness relative to similar herbicidal compositions employing prior art silicone glycol adjuvants.
    Type: Grant
    Filed: September 12, 1990
    Date of Patent: October 22, 1991
    Assignee: Dow Corning Corporation
    Inventors: Lenin J. Petroff, David J. Romensko, Robert A. Ekeland