Patents Examined by Melvyn I. Marquis
  • Patent number: 6034171
    Abstract: A moisture curable composition comprises a mixture and/or a reaction product of a polymeric material having not less than two groups bonded to silicon which are hydroxyl or hydrolyzable groups, an alkoxysilane curative, an adhesion promoter and catalyst material for catalyzing the condensation reaction between the polymeric material and the alkoxysilane curative. The adhesion promoter comprises a silicone-organic copolymer consisting of units (I) according to the general formula R.sub.a R'SiO.sub.(4-a)/2 and units (II) according to the general formula R.sub.b R'SiO.sub.(3-b)/2 where R represents a monovalent hydrocarbon group and R' represents an oxyalkylene chain R.sup.6 (C.sub.2 H.sub.4 O).sub.x (C.sub.3 H.sub.6 O).sub.y Z in which R.sup.6 represents a hydrocarbon linkage to a silicon atom, Z represents H or a carboxylic acid residue.
    Type: Grant
    Filed: July 27, 1998
    Date of Patent: March 7, 2000
    Assignee: Dow Corning S.A.
    Inventor: Patrick Leempoel
  • Patent number: 6034225
    Abstract: The invention relates to organopolysiloxanes which have aliphatically unsaturated radicals, are soluble to at least 80 wt % in organic solvents selected from xylene and toluol at a temperature of 25.degree. C. and a pressure of from 900 to 1100 hPa and contain at least one unit of the following formula (I) R.sup.1.sub.a R.sub.2-a SiO.sub.2/2, at least one unit of the following formula (II) R.sup.1.sub.b R.sub.3-b SiO.sub.1/2, at least one unit of the following formula (III) O.sub.1/2 R.sub.2 SiO.sub.x YRSiO.sub.2/2, and optionally at least one unit of the following formula (IV) O.sub.1/2 R.sub.2 SiO.sub.x YR.sub.2 SiO.sub.1/2, in which:R can be identical or different and is a monovalent, substituted or unsubstituted, SiC-bonded, aliphatically saturated hydrocarbon radical.R.sup.1 can be identical or different and is a monovalent, SiC-bonded, substituted or unsubstituted, aliphatically unsaturated hydrocarbon radical,a is 0, 1 or 2,b is 0, 1, 2 or 3,x is 0 or 1 andy is a radical --(CR.sup.3.sub.2).sub.n CHR.
    Type: Grant
    Filed: June 19, 1998
    Date of Patent: March 7, 2000
    Assignee: Wacker-Chemie GmbH
    Inventors: Richard Weidner, Friedrich Hockemeyer
  • Patent number: 6034200
    Abstract: A heat-curable resin composition comprising a multifunctional epoxy resin monomer and a heat-latent curing agent of formula (I) provides a cured epoxy resin having good thermal and dimensional stability: ##STR1## wherein: R is hydrogen, a C.sub.1-4 alkyl or C.sub.1-4 alkoxy group.
    Type: Grant
    Filed: March 17, 1998
    Date of Patent: March 7, 2000
    Assignee: Korea Research Institute of Chemical Tech.
    Inventors: Jae-Rock Lee, Soo-Jin Park, Sang-Bong Lee
  • Patent number: 6031059
    Abstract: The invention provides hydrogels for use in the production of biomedical devices. In particular, the invention provides hydrogels formed from siloxane prepolymers and a hydrophilic monomer, which hydrogels are optically transparent.
    Type: Grant
    Filed: September 30, 1998
    Date of Patent: February 29, 2000
    Assignee: Johnson & Johnson Vision Products, Inc.
    Inventors: Douglas G. Vanderlaan, Frank Molock, Giancarlo Fruzzetti
  • Patent number: 6031060
    Abstract: Terminally functionalized silicone polymers prepared using protected functionalized initiators and processes for preparing the same. The silicone polymers includes protected, functionalized silicone polymers, such as mono-functional, homotelechelic, heterotelechelic, macromonomer, and radial polymers. The protected functionalized polymers can be optionally deprotected to afford functionalized silicone polymers.
    Type: Grant
    Filed: May 20, 1998
    Date of Patent: February 29, 2000
    Assignee: FMC Corporation
    Inventors: Robert James Letchford, James Anthony Schwindeman, Roderic Paul Quirk
  • Patent number: 6028128
    Abstract: The invention comprises a curable composition comprising: (i) a blocked reactive component wherein the blocked reactive component is a blocked isocyanate or a blocked isothiocyanate; (ii) a functional compound reactive with the blocked reactive component, the functional compound containing reactive hydrogen; (iii) a catalyst for promoting the reaction of the reactive component with the blocked functional compound, wherein said catalyst is based on the reaction product of manganese, cobalt, nickel, copper, zinc, germanium, antimony, or bismuth, or the oxides thereof with a mercaptan, or an organic acid, wherein said organic acid is hexanoic, oxalic, adipic, lactic, tartaric, salicylic, thioglycolic, succinic, or mercapto succinic acid, or the reaction product of copper or germanium, or the oxides thereof with a lower aliphatic acid.
    Type: Grant
    Filed: October 19, 1998
    Date of Patent: February 22, 2000
    Assignee: ELF Atochem North America, Inc.
    Inventors: Emily C. Bossert, Kevin Cannon, William D. Honnick, Wayne Ranbom
  • Patent number: 6027788
    Abstract: A silicone compound having a textured surface when cured, said compound resulting from the combination of an elastomeric base comprising, a hydrolyzable silicone composition and a hydrolyzable silicone crosslinker and a rubber solution comprising a rubber and a solvent absorbable into said elastomeric base.
    Type: Grant
    Filed: July 1, 1998
    Date of Patent: February 22, 2000
    Inventor: Peter Hagen
  • Patent number: 6025455
    Abstract: A process of producing a hydrophobic organosilica sol which comprises aging a reaction mixture at 0 to 100.degree. C. in the state that an alkali present in the reaction mixture is removed or is neutralized with an acid in an equivalent amount or more, thereby forming a silylation-treated silica sol having a hydrophobic colloidal silica dispersed therein, the reaction mixture comprising: (a) a hydrophilic colloidal silica having a specific surface area of 5.5 to 550 m.sup.2 /g in SiO.sub.2 concentration of 5 to 55% by weight, (b) a silylating agent of a disiloxane compound and/or monoalkoxysilane compound in a millimolar ratio of 0.03 to 2 in terms of Si atom per 100 m.sup.2 of a surface of the hydrophilic colloidal silica, and (c) a medium, as a residue thereof, comprising a mixed solvent comprising a hydrophobic organic solvent having a solubility of water of 0.1 to 12% by weight and an alcohol having 1 to 3 carbon atoms in a weight ratio of 0.
    Type: Grant
    Filed: May 26, 1998
    Date of Patent: February 15, 2000
    Assignee: Nissan Chemicals Industries, Ltd.
    Inventors: Keiko Yoshitake, Takafumi Yokoyama
  • Patent number: 6025443
    Abstract: Bead polymers having an average particle size of 1 to 30 .mu.m and a narrow particle size distribution are obtained by the seed/feed process if a crosslinked polymer having a soluble fraction of less than 25 wt. % and an average particle size of 0.5 to 10 .mu.m is used as the seed.
    Type: Grant
    Filed: August 13, 1998
    Date of Patent: February 15, 2000
    Assignee: Agfa Gevaert AG
    Inventors: Wolfgang Podszun, Joachim Kruger, Olaf Halle, Frank Louwet
  • Patent number: 6025453
    Abstract: An organoboron polymer having a backbone with a repeating of at least one kynyl group, at least one silyl group, at least one boranyl group, optionally at least one siloxyl group, and optionally an aryldisilyl group. The boron containing units in and the silicon containing units can be arranged in either random occurrences between each other or in the form of interdispersed block-type structures of each unit. The hybrid polymer is useful for making high temperature, oxidatively stable thermosetting plastics and for microelectronic applications via crosslinking to three-dimensional inorganic-organic hybrid polymers.
    Type: Grant
    Filed: July 26, 1996
    Date of Patent: February 15, 2000
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Teddy M. Keller, Raj A. Sundar
  • Patent number: 6022926
    Abstract: The invention relates to organosilanes and organopolysiloxanes which contain 2-oxazolidinone groups, where the oxazolidinone group is linked by the ring carbon atom C-4 or C-5 via a spacer to the silane or siloxane and the spacer is connected via a hydrolysis-stable Si--C bond to the silane or siloxane, their use as surface-active substances and also their use for preparing organosilanes and organopolysiloxanes containing amino or carbamido groups.
    Type: Grant
    Filed: June 3, 1998
    Date of Patent: February 8, 2000
    Assignee: Th. Goldschmidt Ag
    Inventors: Thomas Dietz, Christian Weitemeyer
  • Patent number: 6020038
    Abstract: An adhesion layer disposed in a fuser member between an underlying base cushion layer and an outer release layer comprises the reaction product of vinyl- and hydride-containing polydimethylsiloxanes.
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: February 1, 2000
    Assignee: Eastman Kodak Company
    Inventors: Jiann H. Chen, Jerry A. Pickering, William J. Staudenmayer
  • Patent number: 6020408
    Abstract: A pressure-sensitive adhesive composition comprises, as pressure-sensitive adhesive components thereof, an acrylic-based polymer and a silane compound having at least two alkoxysilyl groups in its molecular. The silane compound is a compound which is represented by the following general formula (I).[General Formula (I)] ##STR1## (In this general formula, "A" is a group having a chain structure and/or a ring structure containing 1 to 12 carbon atom(s), R.sub.1 and R.sub.4 are respectively an alkyl group containing 1 to 5 carbon atom(s), and R.sub.2, R.sub.3, R.sub.5 and R.sub.6 are respectively an alkyl group or alkoxyl group containing 1 to 5 carbon atom(s).)The amount of the silane compound to be contained is preferably 0.001 to 10 parts by weight with respect to the pressure-sensitive adhesive composition of 100 parts by weight.
    Type: Grant
    Filed: August 27, 1998
    Date of Patent: February 1, 2000
    Assignee: Lintec Corporation
    Inventors: Takashi Suzuki, Shunpei Watanabe
  • Patent number: 6020446
    Abstract: It is an object of the invention to improve the adhesive property of a curable composition mainly comprising a reactive silyl group-containing saturated hydrocarbon polymer when applied to various adherends and to improve the weathering-resistant adhesive property of said composition when applied to various glass products, in particular heat ray-reflecting glass products.The present invention relates to a curable composition which comprises (A) a saturated hydrocarbon polymer containing at least one silicon-containing group having a hydroxyl group or hydrolyzable group bound to the silicon atom and capable of crosslinking by forming a siloxane bond, (B) a silane coupling agent and (C) a compound containing, within the molecule thereof, an unsaturated group capable of polymerizing upon reaction with atmospheric oxygen and/or a photopolymerizing substance.
    Type: Grant
    Filed: October 22, 1998
    Date of Patent: February 1, 2000
    Assignee: Kaneka Corporation
    Inventors: Toshihiko Okamoto, Makoto Chiba, Masashi Sakaguchi, Junji Takase
  • Patent number: 6020424
    Abstract: The present invention provides a screen printable thermosetting composition for forming thermally conductive interface and a method of using the same. The composition is used to promote the transfer of heat from a source of heat such as an electronic device to a heat dissipation device such as a heat sink. The composition comprises by weight from about 35% to about 75% of a thermal curing vinyl terminated siloxane material, from about 0.005% to about 5% catalyst, from about 10% to about 30% hydrocarbon solvent and from about 20% to about 70% conductive filler.
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: February 1, 2000
    Assignee: Ferro Corporation
    Inventors: Jesus E. Osuna, Keith M. Mason, Vernon E. Stygar
  • Patent number: 6020458
    Abstract: Fluorinated chemical precursors, methods of manufacture, polymer thin films with low dielectric constants, and integrated circuits comprising primarily of sp.sup.2 C-F and some hyperconjugated sp.sup.3 C-F bonds are disclosed in this invention. Precursors are disclosed for creating fluorinated silanes and siloxanes, and fluorinated hydrocarbon polymers. Thermal transport polymerization (TP), chemical vapor deposition (CVD), plasma enhanced CVD (PECVD), high density PECVD (HPCVD), photon assisted CVD (PACVD), and plasma-photon assisted (PPE) CVD and PPETP of these chemicals provides thin films with low dielectric constants and high thermal stabilities for use in the manufacture of integrated circuits.
    Type: Grant
    Filed: October 24, 1997
    Date of Patent: February 1, 2000
    Assignee: Quester Technology, Inc.
    Inventors: Chung J. Lee, Hui Wang, Giovanni Antonio Foggiato
  • Patent number: 6020448
    Abstract: N-[.omega.-(methyl),.omega.-(silyl)]alkyl-N-organocarboxamides, oligomeric and polycondensed Si-containing compounds thereof, or mixtures of the corresponding monomeric, oligomeric and polycondensed Si-containing compounds. These materials are useful as, for example, adhesion promoters and for coating surfaces.
    Type: Grant
    Filed: June 17, 1998
    Date of Patent: February 1, 2000
    Assignee: Huels Aktiengesellschaft
    Inventors: Peter Jenkner, Albert Frings, Michael Horn, Jaroslaw Monkiewicz, Burkhard Standke
  • Patent number: 6020409
    Abstract: Polyorganosiloxane gels are prepared using compositions curable by a platinum catalyzed hydrosilation reaction that are characterized by the presence of a non-functional silicone fluid. The gel may contain additional components and may also be formulated into a multi-part system.
    Type: Grant
    Filed: September 19, 1997
    Date of Patent: February 1, 2000
    Assignee: Dow Corning Corporation
    Inventors: Khristopher Edward Alvarez, Roger Allen Frazer, Myron Timothy Maxson, Ann Walstrom Norris, Michael Raymond Strong, Beth Ann Witucki, Shizhong Zhang
  • Patent number: 6020410
    Abstract: Storage solutions of silsesquioxane and siloxane polymers are obtained by means of a silicon containing solvent composition. The solution has at least one polymer having a formula of [(HSiO.sub.1.5).sub.x O.sub.y ].sub.n, (HSiO.sub.1.5).sub.n, [(HSiO.sub.1.5).sub.x O.sub.y (RSiO.sub.1.5).sub.z ].sub.n, [(HSiO.sub.1.5).sub.x (RSiO.sub.1.5).sub.y ].sub.n or [(HSiO.sub.1.5).sub.x O.sub.y (RSiO.sub.1.5).sub.z ].sub.n wherein x=about 6 to about 20, y=1 to about 3, z=about 6 to about 20, n=1 to about 4,000, and each R is independently H, C.sub.1 to C.sub.8 alkyl or C.sub.6 to C.sub.12 aryl. The solvent has the formula of (CH.sub.3).sub.3 Si--O--[Si(CH.sub.3).sub.2 ].sub.a --Si(CH.sub.3).sub.3, (CH.sub.3 CH.sub.2)Si--O--[Si(CH.sub.3 CH.sub.2).sub.2 ].sub.a --SiCH.sub.3 CH.sub.2).sub.3, R.sub.3 Si--O--[SiR'.sub.2 ].sub.a --SiR.sub.3, [O--Si(CH.sub.3).sub.2 ].sub.b, [O--Si(CH.sub.3 CH.sub.2).sub.2 ].sub.b or [O--SiR'.sub.2 ].sub.n wherein a=0-5, b=3-5, and each R' is independently H or C.sub.1 to C.sub.8 alkyl.
    Type: Grant
    Filed: October 22, 1997
    Date of Patent: February 1, 2000
    Assignee: AlliedSignal Inc.
    Inventors: Nigel P. Hacker, Todd Krajewski, Scott Lefferts, Gary Davis
  • Patent number: 6020389
    Abstract: The present invention pertains to a process for foaming mixtures of bifunctionally-ending di-organopolysiloxanes and acyloxsilane cross-linking agents, involving the addition to the mixture of sufficient quantities of an ammonium, amino, sodium or potassiumn hydrocarbonate.
    Type: Grant
    Filed: April 10, 1998
    Date of Patent: February 1, 2000
    Assignee: Heidelberger Bauchemie GmbH
    Inventor: Rudolf Hoheneder