Patents Examined by Melvyn I. Marquis
  • Patent number: 5962616
    Abstract: Disclosed is an anaerobic hardening composition comprising (A) 100 parts by weight of a (meth)acryloyloxy group-containing polyorganosiloxane, (B) from 0.01 to 20 parts by weight of a dialkyl peroxide and (C) from 0.1 to 20 parts by weight of an amine. The composition hardens in the absence of oxygen with excellent hardenability and adhesiveness-revealing speed to give a hardened product having a high adhesion power.
    Type: Grant
    Filed: October 2, 1997
    Date of Patent: October 5, 1999
    Assignee: General Electric Company
    Inventors: Tetsuo Fujimoto, Masahiro Terada, Isao Endo
  • Patent number: 5962568
    Abstract: A silicone resin for forming a coating powder has organic substitutents selected from the group consisting of phenyl, methyl, C.sub.2 through C.sub.6 alkyl and mixtures thereof; a viscosity of between about 500 and about 10,000 cps at 150.degree. C.; a condensable hydroxyl content of between about 2.0 and about 4.5 wt %; a glass transition temperature of about 55.degree. C. or above; and about 0.2% or less of organic solvent.
    Type: Grant
    Filed: March 31, 1998
    Date of Patent: October 5, 1999
    Assignee: Morton International, Inc.
    Inventors: Owen H. Decker, Charles P. Tarnoski
  • Patent number: 5962583
    Abstract: The invention relates to a RTV silicone composition having increased hot oil resistance upon curing. The RTV silicone composition comprises a polydiorganosiloxane, an acyloxy-functional crosslinker, a metal salt of a carboxylic acid catalyst, a filler, and a metal acetylacetonate. In a preferred embodiment a metal oxide is also added.
    Type: Grant
    Filed: June 10, 1997
    Date of Patent: October 5, 1999
    Assignee: Dow Corning Corporation
    Inventors: Philip David Beljanski, Loren Dale Lower
  • Patent number: 5962067
    Abstract: The invention provides a method for coating an article with a siloxane-based coating composition that results in a coating with high thermal mechanical stability, the method also allowing commercially acceptable speeds to be employed while inhibiting beading of the coating prior to cure. In one embodiment, an article is coated with a composition containing a first methylsilsequioxane oligomer having an initial viscosity of about 2000 cp or less, a second methylsilsequioxane oligomer having an initial viscosity of about 40,000 to about 90,000 cp, a viscosity-lowering additive of a lower aliphatic ketone, and a catalyst. In another embodiment, the invention provides a method for coating an article with a modified methylsilsequioxane coating suitable for higher temperature applications than an all-methyl coating.
    Type: Grant
    Filed: September 9, 1997
    Date of Patent: October 5, 1999
    Assignee: Lucent Technologies Inc.
    Inventors: Jerry Rodolfo Bautista, Edwin Arthur Chandross, Valerie Jeanne Kuck
  • Patent number: 5962555
    Abstract: ASA sizing emulsions containing low and high molecular weight cationic polymers are described. An ASA sizing emulsion of the invention contains 25 to 99 percent by weight water, 0.003 to 60 percent by weight ASA, 0.003 to 50 percent by weight of a cationic polymer mixture, and 0 to 2 percent by weight of a surfactant. The cationic polymer mixture contains 75 to 99 percent by weight of an ionene polymer and 1 to 25 percent by weight of a high molecular weight polyethyleneimine polymer. In the sizing emulsion, the ASA has a particle size ranging from 0.5 to 3 microns. A method for sizing paper using such an emulsion is also described.
    Type: Grant
    Filed: June 25, 1997
    Date of Patent: October 5, 1999
    Assignee: Buckman Laboratories International, Inc.
    Inventor: Daniel E. Glover
  • Patent number: 5962098
    Abstract: The release liner has a flat base substrate which coated on both sides with thermoplastic polyolefin. On one side, the base substrate has a release coating which forms a release force to adhesives. On the other side, the base substrate has a polymer-bound mineral particle layer.
    Type: Grant
    Filed: November 14, 1996
    Date of Patent: October 5, 1999
    Assignee: Assidoman Inncoat GmbH
    Inventors: Wilhelm Munninger, Hans Wattendorf
  • Patent number: 5962559
    Abstract: One-part alkoxy curing room temperature vulcanizable silicone compositions comprising the bi-functional compounds containing the 1-sila-azacyclopentane structure wherein the compounds function as alcohol scavengers in one-part alkoxy curing room temperature vulcanizable silicone compositions and the alcohol reaction products of these compounds function as adhesion promoters in such room temperature vulcanizable compositions.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: October 5, 1999
    Assignee: General Electric Company
    Inventors: Gary M. Lucas, Slawomier Rubinsztajn, Brian P. Bayly
  • Patent number: 5959034
    Abstract: A curable silicone composition having high compatibility with organic polymers, which comprises (a) 100 parts by weight of a hydroxyl group-containing organopolysiloxane represented by the following formula (I) and (b) 1-50 parts by weight of an isocyanate compound having at least two isocyanate groups per molecule, wherein the number of the hydroxyl groups per molecule in the component (a) plus the number of the isocyanate groups per molecule in the component (b) is at least 5: ##STR1## wherein R.sup.1 is a monovalent saturated hydrocarbon group; R.sup.2 is a phenyl-substituted alkyl group represented by C.sub.6 H.sub.5 --(CH.sub.2).sub.p --CH(R.sup.4)--CH.sub.2 --; R.sup.3 is a hydroxyl-substituted alkyl group represented by --CH.sub.2 --CH.sub.2 --CH.sub.2 --O--(C.sub.2 H.sub.4 O).sub.q --H; two R groups are the same group or different groups selected from the groups represented by R.sup.1, R.sup.2 or R.sup.3 ; R.sup.4 is a hydrogen atom or the same group as R.sub.
    Type: Grant
    Filed: April 17, 1998
    Date of Patent: September 28, 1999
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Masahiko Ogawa, Naoki Omura, Shunji Aoki
  • Patent number: 5958515
    Abstract: This invention relates to a primer that improves adherence of a cured resin sealant to a cured silicone coating on an electrical element, wherein said primer is selected from the group consisting of:(i) a mixture of components (a) and (b),(ii) a reaction mixture of components (a) and (b),(iii) component (c),(iv) component (c) and a mixture of components (a) and (b), and(v) component (c) and a reaction mixture of components (a) and (b),where component (a) is silanol-functional organopolysiloxane; component (b) is epoxy-functional organoalkoxysilane; and component (c) is organopolysiloxane with the average unit formula:(R.sup.1 SiO.sub.3/2).sub.a (R.sup.2.sub.2 SiO.sub.2/2).sub.b (R.sup.2.sub.3 SiO.sub.1/2).sub.c (R.sup.3 O.sub.1/2).sub.dwhere R.sup.1 is an epoxy-functional monovalent organic group; each R.sup.2 is independently a monovalent hydrocarbon group, R.sup.
    Type: Grant
    Filed: September 3, 1997
    Date of Patent: September 28, 1999
    Assignee: Dow Corning Toray Silicone Co., LTD.
    Inventors: Minoru Isshiki, Katsutoshi Mine, Kimio Yamakawa
  • Patent number: 5958176
    Abstract: An electrical part containing an electrical element, a cured silicone resin which has been treated with ultraviolet light, a cured sealing resin which has been integrally bonded to the UV treated silicone resin. The cured silicone resin is prepared from an addition reaction curable silicone composition which is a mixture or reaction mixture of (a) an organosiloxane which has silanol groups and (b) an alkoxysilane which has epoxy groups, and/or (c) an organosiloxane which can be expressed by the average unit formula(R.sup.1 SiO.sub.3/2).sub.a (R.sup.2.sub.2 SiO.sub.2/2).sub.b (R.sup.2.sub.3 SiO.sub.1/2).sub.c (R.sup.3 O.sub.1/2).sub.dwherein R.sup.1 is an epoxy group containing monovalent organic group R.sup.2 is monovalent hydrocarbon group, R.sup.3 is a hydrogen atom or an alkyl group with 1 to 4 carbon atoms, a, b and d are>0 and c is.gtoreq.0.
    Type: Grant
    Filed: July 24, 1997
    Date of Patent: September 28, 1999
    Assignee: Dow Corning Toray Silicone Co., Ltd.
    Inventors: Minoru Isshiki, Katsutoshi Mine, Kimio Yamakawa
  • Patent number: 5959025
    Abstract: The present invention relates to a method for making nitrosamine-free silicone articles by treating the mixture of vinyl containing organopolysiloxane and filler with hindered phenols, a nitrosamine-free composition and a nitrosamine-free article made therefrom. A preferred nitrosamine-free molded article is a baby bottle nipple.
    Type: Grant
    Filed: June 26, 1996
    Date of Patent: September 28, 1999
    Assignee: General Electric Company
    Inventors: Larry Neil Lewis, Edward Matthew Jeram
  • Patent number: 5959056
    Abstract: A release agent composition for use in an electrophotographic process is disclosed. This composition includes a specifically-defined heat-stable silicone oil-silicone wax copolymer. The copolymer has a melting point such that it is liquid on the hot fuser roll, but solidifies at room temperature on the printed page. A random silicone copolymer, in the form of a paste or pliable caulk, which is useful for sealing leaks in toner cartridges is also disclosed. Finally, the method for preparing these copolymers is disclosed.
    Type: Grant
    Filed: September 25, 1997
    Date of Patent: September 28, 1999
    Assignee: Lexmark International, Inc.
    Inventors: Bradley L. Beach, Kathryn E. Dowlen, Terence E. Franey, Douglas C. Hamilton, Gerald G. Leslie, Alexander D. Meade, Jing X. Sun, Peter E. Wallin
  • Patent number: 5955206
    Abstract: A composition for polysulfide-based resin comprising a polythiol having 4 or more functional groups and a compound having a reactive unsaturated bond(s) and/or b epoxy group(s) and/or c iso(thio)cyanato group(s) in one molecule (however, a+b+c.gtoreq.2, and a and b are not simultaneously 0). A polysulfide-based resin obtained by curing the composition, an optical material comprising the resin, a lens consisting of the optical material and a method for producing the polysulfide-based resin are also set forth.
    Type: Grant
    Filed: April 30, 1996
    Date of Patent: September 21, 1999
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Koju Okazaki, Chitoshi Shimakawa, Mamoru Tanaka, Yoshinobu Kanemura, Teruyuki Nagata, Yoshihiro Irizato, Shinichi Umeda
  • Patent number: 5955554
    Abstract: The invention relates to a process for the polymerization and co-polymerization of olefins, which comprises polymerizing/copolymerizing olefins in presence of a solvent, a supported metallocene catalyst and an aluminoxane as cocatalyst in a hydrocarbon medium, at a temperature in the range of 50 to 150.degree. C., at a pressure ranging between 1 to 20 bar, for a period of 10 minutes to 10 hours, scavenging the reaction mixture by addition of an organoaluminum compound to remove the last traces of impurities of solvent, separating the polymer by conventional method like, washing the polymer with an organic solvent and drying the polymer to remove the solvent to obtain the product.
    Type: Grant
    Filed: May 14, 1997
    Date of Patent: September 21, 1999
    Assignee: Council of Scientific Industrial Research
    Inventors: Swaminathan Sivaram, Soumen Sensarma
  • Patent number: 5954869
    Abstract: The composition formed by mixing an organosilane, optionally having a nonhydrolizable organic group, but having one or more hydrolyzable groups, with a polyol containing at least two hydroxy groups, wherein at least any two of the hydroxy groups are separated by no more than two intervening atoms. Water-stabilized organosilane compounds. A water stable composition made from the polyol and organosilane or compound and water. A method of treating a substrate by mixing or contacting the substrate with the product, compound, or composition of this invention for a period of time sufficient for treatment of the substrate. A treated substrate having adhered thereto the product, compound, or composition of this invention. A method of dyeing and treating a substrate. A method of antimicrobially treating a food article. A method of antimicrobially coating a fluid container. A method of antimicrobially coating a latex medical article. A method of making a siloxane in the presence of a stabilizer.
    Type: Grant
    Filed: May 7, 1997
    Date of Patent: September 21, 1999
    Assignee: BioShield Technologies, Inc.
    Inventors: Jacques E. Elfersy, Joachim Berkner, Timothy C. Moses
  • Patent number: 5952403
    Abstract: A medical electrical lead and a reinforced silicone elastomer used therein. The silicone elastomer used therein is preferably made from a novel silica reinforced polysiloxane material, which after vulcanization by cross-linking exhibits improved mechanical properties. The medical electrical lead features a an electrode at a distal end thereof, a connector at a proximal end thereof and an elongated electrical conductor extending between the electrode and the connector, the conductor in electrical contact with the electrode at a distal end and in electrical contact with the connector at a proximal end, the conductor comprised of a plurality of wires or wire bundles wound in a multifilar coil configuration.
    Type: Grant
    Filed: February 2, 1998
    Date of Patent: September 14, 1999
    Assignee: Medtronic, Inc.
    Inventors: Mark J. Paulsen, Jennifer P. Miller, Michael J. Ebert
  • Patent number: 5952444
    Abstract: According to the present invention, there are here disclosed a polyurethane resin derivative having a polydimethylsiloxane side chain and an isocyanate group in a main chain of a polyurethane molecule which is obtainable by reacting (A) a polydimethylsiloxane having an alkyl group on one terminal and 2 hydroxyl groups in the vicinity of the other terminal with (B) a polyisocyanate having 2 or more isocyanate groups in one molecule; a coating resin composition which is obtainable by reacting a polyurethane resin derivative having a polydimethylsiloxane side chain and an isocyanate group in a main chain of a polyurethane molecule with a hydroxyl group-containing resin; and a method for curing the coating resin composition.
    Type: Grant
    Filed: September 8, 1997
    Date of Patent: September 14, 1999
    Assignee: Chisso Corporation
    Inventor: Koichi Ayama
  • Patent number: 5948539
    Abstract: A medical electrical lead and a reinforced silicone elastomer used therein. The silicone elastomer used therein is preferably made from a novel silica reinforced polysiloxane material, which after vulcanization by cross-linking exhibits improved mechanical properties. The medical electrical lead features a an electrode at a distal end thereof, a connector at a proximal end thereof and an elongated electrical conductor extending between the electrode and the connector, the conductor in electrical contact with the electrode at a distal end and in electrical contact with the connector at a proximal end, the conductor comprised of a plurality of wires or wire bundles wound in a multifilar coil configuration.
    Type: Grant
    Filed: September 4, 1996
    Date of Patent: September 7, 1999
    Assignee: Medtronic, Inc.
    Inventors: Mark J. Paulsen, Jennifer P. Miller, Michael J. Ebert
  • Patent number: 5948540
    Abstract: Wet-like cleaning wipes and similar articles that are particularly useful in removing perianal soils. These wipes comprise a carrier substrate such as tissue paper web that is treated with a high internal phase inverse emulsion made with an organopolysiloxane-polyoxyalkylene emulsifier. The organopolysiloxane-polyoxyalkylene emulsifiers provide better internal polar phase retention than other organic emulsifiers used in formulating high internal phase inverse emulsions, as well as better hand feel aesthetics for the wipe treated with the emulsion.
    Type: Grant
    Filed: April 30, 1997
    Date of Patent: September 7, 1999
    Assignee: The Procter & Gamble Company
    Inventors: Larry Neil Mackey, Paul Dennis Trokhan
  • Patent number: 5948854
    Abstract: Alkoxy-functional room temperature vulcanizing (RTV) compositions, curable in the presence of moisture, comprising polymers containing on average at least 1.2 alkoxysilyl chain terminations per molecule, a tetraalkoxytitanium compound containing on average greater than 90 mole percent of the alkoxy groups as tertiary amyloxy groups, a filler, and an alkoxysilane. The addition of these components in amounts to satisfy defined molar ratios provide alkoxy-functional RTV compositions having both improved storage stability and improved green strength upon curing.
    Type: Grant
    Filed: September 25, 1997
    Date of Patent: September 7, 1999
    Assignees: Dow Corning S.A., Dow Corning Corporation
    Inventors: Francois de Buyl, Robert H. Krahnke, Timothy B. Lueder, Richard A. Palmer