Patents Examined by Melvyn I. Marquis
  • Patent number: 6057040
    Abstract: An improved coating comprising a coating on a substrate is described. The coating comprises a crosslinked polymeric material derived from an alkine-bridged bis-(aminosilane) or comprising a mixture of the alkine-bridged bis-(amino-silane) and an epoxysilane. The alkine bridged bis-(aminosilane) may have the general formula: ##STR1## wherein R.sup.1, R.sup.2, and R.sup.3 are independently selected from alkyl groups of 1 to 4 carbon atoms or phenyl groups,R.sup.4 is selected from hydrogen, phenyl groups, and alkyl of from 1 to 4 carbon atoms, andn is 1, 2, 3 or 4,p is 2, 3 or 4,q is 0 or 1,o is 0 or 1, andm is 1, 2, 3 or 4,wherein q plus m is 1 or 2, o is 1 only when all aminosilane groups are bonded to the other alkine groups, and when p is 4, both m and o are zero, or preferably[R.sup.1 OR.sup.2 OR.sup.3 O--Si--(CH.sub.2)n--NH].sub.2 --(C.sub.m H.sub.2m)wherein R.sup.1, R.sup.2, and R.sup.3 are independently selected from aliphatic groups or aromatic groups, andn is 1, 2, 3 or 4, andm is 1, 2, 3 or 4.
    Type: Grant
    Filed: January 22, 1998
    Date of Patent: May 2, 2000
    Assignee: Vision--Ease Lens, Inc.
    Inventor: Martin L. Hage
  • Patent number: 6054522
    Abstract: A protective coating which imparts non-stick and abrasion resistant properties, as well as hydrophobic properties to an inorganic article, the coating being the composition product between hydroxyl groups on the surface of the inorganic article and a composition comprising a silane, a metal alkoxide and an acidified aqueous mixture of a lower alkanol. The silane content is at least 50% of the total sum of the silane plus the metal alkoxide. The metal alkoxide is at least 5% and preferably 10% of the total sum of the silane plus the metal alkoxide.
    Type: Grant
    Filed: March 5, 1998
    Date of Patent: April 25, 2000
    Assignee: Corning Incorporated
    Inventors: Alain Carre, Michel Prassas, Jean Waku-Nsimba
  • Patent number: 6054546
    Abstract: Provided is a solvent-free two-liquid type normal temperature curable liquid polymeric composition which comprises (I) as a first liquid, a liquid composition comprising (A) an organosiloxane component comprised of (a) one or more liquid organopolysiloxanes of the general formula: ##STR1## wherein R.sup.1 stands for a hydrogen atom, an alkyl group with 1-5 carbon atoms or an acyl group; R.sup.2 to R.sup.6 are the same or different and each stands for a hydrogen atom, --OR.sup.1 or a univalent hydrocarbon group; and n for an integer of 1-15, (b) a crosslinking agent comprising one or more organometallic compounds of the general formula:R.sup.7.sub.p M.(OR.sup.1).sub.3-porR.sup.7.sub.m Q.(OR.sup.1).sub.4-mwherein M stands for aluminum or boron element; Q for silicon, titanium or zirconium element; R.sup.1 for a hydrogen atom, an alkyl group with 1-5 carbon atoms, an acyl group or an oxime group; R.sup.7 for a hydrogen atom, --OR.sup.
    Type: Grant
    Filed: February 3, 1998
    Date of Patent: April 25, 2000
    Assignee: Suzuki Sangyo Co., Ltd.
    Inventors: Tomio Suzuki, Kimie Watanabe
  • Patent number: 6054547
    Abstract: A fragrance releasing siloxane comprising a substituent having the formula (R.sup.1 O).sub.a (R.sup.2 O).sub.b (R.sup.3 O).sub.c (R.sup.4).sub.d (R.sup.5).sub.e SiR.sup.U with R.sup.U a two to forty atom divalent hydrocarbon radical where R.sup.1 O, R.sup.2 Oand R.sup.3 O are each independently fragrant alkoxide moieties, derived from the alcohols R.sup.1 OH, R.sup.2 OH and R.sup.3 OH wherein R.sup.1 OH, R.sup.2 OH and R.sup.3 OH are independently fragrant alcohols with R.sup.4 and R.sup.5 selected from the group consisting of monovalent hydrocarbon radicals having from one to forty carbon atoms and monovalent alkoxy radicals having from one to forty carbon atoms, where the subscript a has a value ranging from 1 to 3 and the subscripts b, c, d, and e have values ranging from 0 to 2 subject to the limitation that a+b+c+d+e=3.
    Type: Grant
    Filed: August 28, 1998
    Date of Patent: April 25, 2000
    Assignee: General Electric Company
    Inventors: Robert J. Perry, John A. Kilgour
  • Patent number: 6051639
    Abstract: A material of general formula I: ##STR1## where E=0 indicates a non-cyclic system, and E=1 indicates a cyclic system;G is R.sub.3 SiR.sub.1 R.sub.2 (O).sub.kR.sub.1, R.sub.2, R.sub.3 are independently selected from C.sub.1-16 alkyl which may be partly or fully halogenated, H and formula IA: ##STR2## wherein Y is a propylene group which may be partially halogenated with fluorine or chlorine and Y.sub.1 is independently selected from COO, OCO, O, S, CHOH, CHF, CO or CH.sub.2 ;Q and Q.sub.1 are independently selected from (CH.sub.2).sub.n wherein one or more non-adjacent methylenes may be replaced by O andn=0-20;Z and Z.sub.1 are independently selected from O, S, single covalent bond, COO or OCO; ##STR3## represents a mesogenic group and is given by the general structure II ##STR4## A, B, D are selected from the following rings: ##STR5## the above rings may be substituted with one or more of the following substituents in at least one of the available substitution positions: F, Cl, Br, CH.sub.
    Type: Grant
    Filed: August 25, 1998
    Date of Patent: April 18, 2000
    Assignee: The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern Ireland
    Inventors: Georg H Mehl, John W Goodby, Rachel P Tuffin, Kenneth J Toyne
  • Patent number: 6051657
    Abstract: There is disclosed a method for preparing a silyl-functional living cationic polymer which can be subsequently coupled to form a moisture-curable telechelic system, said method comprising reacting, in the presence of a Lewis acid,(A) at least one cationically polymerizable monomer with(B) an initiator of the formula ##STR1## wherein R is selected from alkyl groups having 1 to 10 carbon atoms or aryl groups having 6 to 10 carbon atoms, R' is a divalent aliphatic hydrocarbon group having at least 3 carbon atoms, X is halogen, Y is selected from the group consisting of halogen, alkoxy. acyloxy and hydroxyl groups and a is 1, 2 or 3.
    Type: Grant
    Filed: December 3, 1998
    Date of Patent: April 18, 2000
    Assignees: Dow Corning Asia, Ltd., University of Massachusetts Lowell
    Inventors: Rudolf Faust, Savvas E. Hadjikyriacou, Toshio Suzuki
  • Patent number: 6048579
    Abstract: A primer for promoting adhesion between an elastomeric adhesive and a nonporous substrate containing a silane-modified saturated polyester polymer and an adhesion promoter in an anhydrous solvent. The invention is also directed to a silane-modified saturated polyester polymer, and an adhesion promoter made by the reaction of a multifunctional isocyanate and an organosilane.
    Type: Grant
    Filed: September 15, 1999
    Date of Patent: April 11, 2000
    Assignee: Adco Products, Inc.
    Inventors: Xiaobin Wang, Brian J. Briddell
  • Patent number: 6048946
    Abstract: A composition, which comprises (a) a cycloaliphatic epoxy resin,(b) an OH-terminated polysiloxane,(c) a polysiloxane/polyether copolymer, and(d) a cyclic polysiloxane,has excellent hydrophobic properties and can be used as electric insulation composition.
    Type: Grant
    Filed: August 20, 1998
    Date of Patent: April 11, 2000
    Assignee: Ciba Specialty Chemicals Corp.
    Inventor: Christian Beisele
  • Patent number: 6046294
    Abstract: In silicone release coatings obtained by crosslinking compositions whose constituents comprise (A) alkenyl-functional polyorganosiloxane and an SiH-functional organosiloxane,the release force is regulated by using an SiH-functional organosiloxane (B) having from 0.1 to 60 mol-% of radicals which are incompatible with the compositions,said radicals being regarded as incompatible with the compositions when a mixture of 1 part by weight of SiH-functional organosiloxane (B) having 30 mol-% of incompatible radicals and 9 parts by weight of alkenyl-functional polyorganosiloxane (A) forms more than one phase at C.
    Type: Grant
    Filed: August 6, 1998
    Date of Patent: April 4, 2000
    Assignee: Wacker-Chemie GmbH
    Inventors: Frank Achenbach, Armin Fehn, Wolfgang Hechtl, Margot Kinne
  • Patent number: 6045873
    Abstract: The present invention provides:(1) a one-packed epoxy resin composition comprising(A) an epoxy resin having two or more epoxy groups in its molecule and a number average molecular weight of 250 to 4,500,(B) a ketimine compound,(C) a dehydrating agent, and(D) at least one modified epoxy resin (d-1) selected among urethane-modified epoxy resins, amine-modified epoxy resins and dimer-modified epoxy resins and/or a resin (d-2) which has a softening point of C. or above and is at least one member selected among xylene resins, ketone resins, coumarone resins and petroleum resins;(2) a one-packed anticorrosive paint composition comprising the above one-packed epoxy resin composition and (E) a zinc dust in such an amount as to be present in a proportion of 20 to 95 wt.
    Type: Grant
    Filed: February 18, 1998
    Date of Patent: April 4, 2000
    Assignee: Kansai Paint Company, Limited
    Inventors: Yoshimitsu Adachi, Toshihiro Hamamura
  • Patent number: 6043338
    Abstract: In a process for the preparation of copolymers of tetrahydrofuran and but-2-yne-1,4-diol by catalytic polymerization of tetrahydrofuran, the polymerization is carried out over a heterogeneous acidic catalyst which has acid centers of acidity pK.sub.a <+2 in a concentration of at least 0.005 mmol/g of catalyst, in the presence of but-2-yne-1,4-diol. In particular, for the preparation of polyoxytetramethylene glycol, the copolymers are reacted in the presence of hydrogen over a hydrogenation catalyst.
    Type: Grant
    Filed: January 22, 1998
    Date of Patent: March 28, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Christoph Sigwart, Rolf Fischer, Karsten Eller, Rainer Becker, Klaus-Dieter Plitzko, Gerd Heilen
  • Patent number: 6040419
    Abstract: An improved process for the polymerization of cyclic ethers to polyethers using strong Bronsted acid catalysts is disclosed. The catalysts are fluorinated sulfonic acid containing polymers. The resulting polyethers are useful as monomers and in adhesives.
    Type: Grant
    Filed: July 20, 1998
    Date of Patent: March 21, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Neville Everton Drysdale, Lin Wang, Zhen-Yu Yang
  • Patent number: 6039913
    Abstract: The present invention relates to a process for the manufacture of a molding, which comprises the following steps:a) providing at least one prepolymer comprising one or more crosslinkable groups, wherein the prepolymer is an amphiphilic segmented copolymer comprising at least one hydrophobic segment A and one hydrophilic segment B;b) preparing a mesophase of the prepolymer which is at least partly bicontinuous;c) introducing the mesophase obtained into an ophthalmic mold;d) triggering of the crosslinking; ande) opening the mold such that the molding can be removed. The process of the invention is particularly suited for the manufacture of membranes and ophthalmic moldings such as contact lenses.
    Type: Grant
    Filed: August 27, 1998
    Date of Patent: March 21, 2000
    Assignee: Novartis AG
    Inventors: Thomas Hirt, Richard Carlton Baron, Dieter Lohmann, Wolfgang Peter Meier
  • Patent number: 6039795
    Abstract: An ink composition for an oil marking pen is provided which comprises a coloring agent, an organic polar solvent, an oil-soluble resin and an organically modified silicone as principal components thereof. The organically modified silicone is selected from dimethyl silicone, alkyl-modified silicones, polyether-modified silicones such as a polyoxypropylene modified silicone and the like, and is contained in the ink composition in a proportion of 0.005 wt % to 10 wt %. The organic polar solvent is selected from alcohol solvents and glycol ether solvents. The oil-soluble resin is selected from ketone resins, phenol resins, xylene resins, rosin resins, styrene-organic acid copolymers and polyacrylates. The ink composition of the present invention is excellent in the ink film fixability when applied on a nonabsorbent surface such as a metal surface or a plastic surface, and suitable for oil marking pens.
    Type: Grant
    Filed: December 8, 1997
    Date of Patent: March 21, 2000
    Assignee: Sakura Color Products Corporation
    Inventors: Hidetoshi Fukuo, Masakazu Yokoi
  • Patent number: 6040388
    Abstract: A hydrogenated product of a copolymer of cyclopentadiene and/or dicyclopentadiene and a vinyl-substituted aromatic compound. The copolymer has a softening point of from 60 to C., a vinyl-substituted aromatic compound content of from 30 to 90% by weight, a bromine number of from 30 to 90 g/100 g, a number average molecular weight of from 400 to 1,000, and a weight average molecular weight/number average molecular weight (Mw/Mn) ratio of 2.5 or less. The hydrogenated product has a softening point of 60 to C., a vinyl-substituted aromatic compound content of 0 to 35% by weight, a bromine number of 0 to 300 g/100 g, a number average molecular weight of 400 to 1,000 and a weight average molecular weight/number average molecular weight ratio of 2.5 or less. The hydrogenated product is useful as a substrate in the production of a tackifier and an adhesive.
    Type: Grant
    Filed: November 10, 1997
    Date of Patent: March 21, 2000
    Assignee: Idemitsu Petrochemical Co., Ltd.
    Inventors: Koichi Nishimura, Tatsuya Kawamura, Toyozo Fujioka
  • Patent number: 6040396
    Abstract: A formulation which contains:(1) the nucleophilic addition adduct of an imidazole and an unsaturated compound, which contains more than one imidazole moiety per molecule; and(2) an epoxy resin,is characterized in that fewer than 50 equivalent percent of the imidazole moieties in the adduct are neutralized with acid. The adduct may serve as a curing catalyst in high or low-temperature curing. The formulation is made and applied as a powder coating for coatings or as a matrix resin in laminates. It may be used in solvent-borne or liquid systems.
    Type: Grant
    Filed: July 22, 1997
    Date of Patent: March 21, 2000
    Assignee: The Dow Chemical Company
    Inventors: Joseph Gan, Gabriele Badini, Klaus E. Hoffmann
  • Patent number: 6040369
    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: June 2, 1999
    Date of Patent: March 21, 2000
    Assignee: Medtronic, Inc.
    Inventors: Mark J. Paulsen, Jennifer P. Miller, Michael J. Ebert
  • Patent number: 6040372
    Abstract: A sol having dispersed in a liquid medium particles of a hydrated zinc stannate having a primary particle diameter of from 2 to 200 nm and represented by the formula xZnO.multidot.ySnO.sub.2 .multidot.zH.sub.2 O wherein the molar ratio of x:y:z is 1:0.83 to 1.43:1.00 to 5.00.
    Type: Grant
    Filed: August 28, 1998
    Date of Patent: March 21, 2000
    Assignee: Nissan Chemical Industries, Ltd.
    Inventors: Yoshitane Watanabe, Keitaro Suzuki, Yoshinari Koyama, Motoko Iijima
  • Patent number: 6040412
    Abstract: This specification describes and claims a process for preparing chain-extended organopolysiloxanes. The process comprises the steps of: A) mixing organopolysiloxanes having at least one silicon-bonded hydroxyl group per molecule with a polymerization catalyst to form a mixture, B) allowing the mixture of step A to react so as to produce a reaction product comprising polymerized organopolysiloxanes of which some have at least one silicon-bonded hydroxyl group per molecule and C) allowing the silicon-bonded hydroxyl group containing organopolysiloxanes of the reaction product of step B to react with a nitrogen-containing silylating agent capable of chain-extending to produce a chain-extended organopolysiloxane. Preferably the silylating agent is a cyclosilazane. Organopolysiloxanes having terminal groups other than silicon-containing hydroxyl groups and which are capable of equilibrating with the mixture of step A and/or the reaction product of step B may also be introduced prior to step C.
    Type: Grant
    Filed: October 14, 1998
    Date of Patent: March 21, 2000
    Assignee: Dow Corning S.A.
    Inventors: Eric Damme, Jean-Marc Gilson, Patrick Leempoel, Fabrice Lebecq, Takao Takemasa
  • Patent number: 6033738
    Abstract: Water-repellent articles having an excellent water repellency, particularly water-repellent articles having a great contact angle with respect to waterdrop, an excellent waterdrop rollability, a high scuff resistance and a high weathering resistance, a method for producing the water-repellent articles, and a solution for forming a water-repellent film are dsiclosed. A novel method for producing water-repellent articles is provided, which comprises dissolving a chlorosilyl group-containing compound and a fluoroalkyl group-containing silane compound in a solvent containing an alcohol and/or water content to obtain a solution having the chloro group in said chlorosilyl group-containing compound substituted by an alkoxyl group or hydroxyl group, applying said solution to the surface of a substrate, and then drying the coated material to form a water-repellent film.
    Type: Grant
    Filed: June 24, 1998
    Date of Patent: March 7, 2000
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Toyoyuki Teranishi, Kazutaka Kamitani, Takashi Sunada