Material Is A Metal-containing Material Patents (Class 528/14)
  • Patent number: 6417310
    Abstract: A branched organopolysiloxane is prepared by polymerizing an organopolysiloxane mixture of a branch unit-containing organopolysiloxane and a low molecular weight organopolysiloxane in the presence of an acidic or basic catalyst, or by adding a surfactant to the organopolysiloxane mixture, dispersing it in water to form an emulsion, and polymerizing the emulsion.
    Type: Grant
    Filed: September 11, 2000
    Date of Patent: July 9, 2002
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Naoki Omura, Satoshi Kuwata, Yoshihito Osawa
  • Patent number: 6407193
    Abstract: This invention relates to a process of producing a siloxane copolymer comprising the step of reacting at least one diol, at least one dicarbonate and at least one silicon compound as copolymerization components in the presence of an esterification or transesterification catalyst, wherein the silicon compound is represented by the general formulas (I) and (II): wherein R1, R2, R3 and R4 are each independently a hydrogen atom or a substituted or non-substituted organic group; X and Y are each independently a hydrogen atom or a substituted or non-substituted organic group; a represents an integer of 0 to 5,000; and b represents an integer of 3 to 20.
    Type: Grant
    Filed: July 30, 1998
    Date of Patent: June 18, 2002
    Assignee: Kaneka Corporation
    Inventors: Tomoki Hiiro, Ohshima Koji, Aoyama Taizo
  • Patent number: 6406792
    Abstract: A medical device has a biocompatible coating made by reacting a reactive polysiloxane, an acetoxysilane crosslinking agent, a reinforcing silica and a metal catalyst. Such devices cause decreased reactions when they come into contact with a human or animal body or its blood, fluids or other biological membranes.
    Type: Grant
    Filed: December 15, 1999
    Date of Patent: June 18, 2002
    Assignee: Dow Corning France S.A.
    Inventors: Francois Jean Briquet, Gary Lord
  • Patent number: 6403750
    Abstract: A process for fabricating ceramic composites employs a thermoplastic photo-curable pre-ceramic polymer in which the component is shape by a variety of standard composite fabrication techniques, such as filament winding, tape winding, and woven cloth winding. The process includes steps of passing ceramic fiber monofilament, tow, mat, or woven cloth through a solution of said thermoplastic photo-curable pre-ceramic polymer, applying ceramic fiber monofilament, tow, mat, or woven cloth to a moving flat substrate, using a compaction roller to press the thermoplastic pre-ceramic polymer coated ceramic fiber onto flat substrate, using photo-light of the ultraviolet, visible, or infrared light spectrum to induce cross-linking (curing) of the photo-curable pre-ceramic polymer thereby rendering a thermoset polymer and either partially or completely pyrolyzing the now cured pre-ceramic polymer matrix coated ceramic fiber material.
    Type: Grant
    Filed: June 3, 1999
    Date of Patent: June 11, 2002
    Inventors: Edward J. A. Pope, Kenneth M. Kratsch
  • Patent number: 6403105
    Abstract: A condensation curable coating composition comprises the following and any reaction product thereof: (A) a room temperature vulcanizable polyorganosiloxane composition; and (B) a marine foul release-enhancing proportion of at least one organic compatible silicone fluid free from silanol groups and being capable of blooming to the surface of a cured product of component A.
    Type: Grant
    Filed: October 25, 2000
    Date of Patent: June 11, 2002
    Assignee: General Electric Company
    Inventor: Judith Stein
  • Patent number: 6395855
    Abstract: The present invention relates to mixtures containing bi-functionally terminated diorganopoly siloxanes aminosilane or oxime or alkoxy crosslinking agents, and optionally, filling materials, suitable additives, pigments, colorants, anti-oxidation pigments, anti-heat pigments, and light-protection pigments in addition to solvents and plasticizers. Said mixtures contain water and a catalyst in the form of an acidic or basic neutral salt as an accelerating cross-linking agent.
    Type: Grant
    Filed: August 31, 2000
    Date of Patent: May 28, 2002
    Assignee: Heidelberger Bauchemie GmbH
    Inventors: Werner Luft, Michael Futscher, Hermann Pahl
  • Patent number: 6388005
    Abstract: An emulsion of silicone oil or organic oil possesses excellent stability and contains cross-linked particles in drops of silicone oil or organic oil dispersed in water. The particles have an average diameter of 0.05 &mgr;m to 100 &mgr;m and are prepared by hydrosilylating a cross-linkable liquid composition of (A) an organic compound having at least two aliphatic unsaturated bonds in its molecule; (B) a silicon-containing organic compound having at least two silicon-bonded hydrogen atoms in its molecule; (C) a hydrosilylation reaction catalyst; and (D) an organopolysiloxane having at least one alkenyl group in its molecule. The particles are contained in drops of silicone oil or organic oil with an average diameter of 0.1 &mgr;m to 500 &mgr;m that are dispersed in water.
    Type: Grant
    Filed: November 7, 2000
    Date of Patent: May 14, 2002
    Assignee: Dow corning Toray Silicone Co., Ltd.
    Inventors: Yoshitsugu Morita, Kazuo Kobayashi
  • Patent number: 6388041
    Abstract: Disclosed are polyoxyethylene derivatives having different functional groups at both ends of the molecule represented by the following formula (I) and a process for producing the derivatives by anionic living polymerization. The present invention provides polymers which are especially suitable for use as medical materials. wherein A′ and B′ are organosilyl type amino-protecting groups, R is a hydrogen atom or a C1-6 alkyl group, and Y is a hydrogen atom, an alkali metal or a certain functional group.
    Type: Grant
    Filed: November 7, 2000
    Date of Patent: May 14, 2002
    Assignee: Nano Carrier Co Ltd
    Inventors: Kazunori Kataoka, Masao Kato, Yukio Nagasaki, Takahisa Hayashida, Michihiro Iijima, Teruo Okano
  • Patent number: 6388042
    Abstract: The present invention relates to novel dimethicone copolyol ester compounds bearing a fatty group attached through a hydrophobic ester linkage to silicon. This invention also relates a series of such products having differing amounts of water-soluble groups, silicone soluble groups and fatty soluble groups. By careful selection of the compounds so constructed, very efficient mild conditioning agents may be achieved.
    Type: Grant
    Filed: December 13, 2000
    Date of Patent: May 14, 2002
    Assignee: Siltech LLC
    Inventor: Anthony J. O'Lenick, Jr.
  • Patent number: 6380301
    Abstract: A thermally conductive silicone rubber composition, comprising (A) a curable organopolysiloxane (B) a curing agent; and (C) a filler prepared by treating the surface of a thermally conductive filler with an oligosiloxane having a formula selected from (i) (R1O)aSi(OSiR23)(4−a) and (ii) (R1O)aR2(3−a)SiO[R22SiO]nSi(OSiR23)bR2(3−b) wherein R1 is alkyl, each R2 is independently a monovalent hydrocarbon group free of aliphatic unsaturation, subscript a is an integer from 1 to 3, b is an integer from 1 to 3, and n is an integer having a value greater than or equal to 0.
    Type: Grant
    Filed: November 1, 2000
    Date of Patent: April 30, 2002
    Assignee: Dow Corning Toray Silicone Co., Ltd.
    Inventors: Hiroji Enami, Masayuki Onishi, Tadashi Okawa, Masaaki Amako
  • Patent number: 6362301
    Abstract: The present invention relates to a curable composition including an acryloxysilane- or acyloxysilane-containing oligomer prepared by a continuous process. In addition, photocurable composition including an alkoxysilane or acyloxysilane oligomer is provided. Methods are provided for curing the curable and photocurable compositions.
    Type: Grant
    Filed: October 15, 1999
    Date of Patent: March 26, 2002
    Assignee: Rohm and Haas Company
    Inventors: Michael Damian Bowe, Linda Louise Graham, Gary David Greenblatt, Barry Clifford Lange, Richard Foster Merritt
  • Patent number: 6359096
    Abstract: Soluble silicone resin compositions having good solution stability and a method for their preparation. The silicone resin comprises the reaction product of a mixture comprising (A) 15-70 mol % of a tetraalkoxysilane described by formula Si(OR1)4, where each R1 is an independently selected alkyl group comprising 1 to about 6 carbon atoms, (B) 12 to 60 mol % of a hydrosilane described by formula HSiX3, where each X is an independently selected hydrolyzable substituent, (C) 15 to 70 mole percent of an organotrialkoxysilane described by formula R2Si(OR3)3, where R2 is a hydrocarbon group comprising about 8 to 24 carbon atoms or a substituted hydrocarbon group comprising a hydrocarbon chain having about 8 to 24 carbon atoms and each R3 is an independently selected alkyl group comprising 1 to about 6 carbon atoms; in the presence of (D) water, (E) hydrolysis catalyst, and (F) organic solvent for the reaction product.
    Type: Grant
    Filed: October 25, 1999
    Date of Patent: March 19, 2002
    Assignee: Dow Corning Corporation
    Inventors: Bianxiao Zhong, Russell Keith King, Kyuha Chung, Shizhong Zhang
  • Patent number: 6353073
    Abstract: The present invention provides near quantitative yields of greater than about 95% isomeric purity of poly(3-aminopropylmethylsiloxane)-poly(dimethylsiloxane) copolymers of the general formulae: Me3Si(H2NCH2CH2CH2MeSiO)w(Me2SiO)xOSiMe3 (H2NCH2CH2CH2MeSiO)y(Me2SiO)z wherein Me is methyl, w may range from 1 to about 100, x may range from 1 to about 100, y may range from 1 to about 6, z may range from 1 to about 6 and y+z may range from 3 to about 7.
    Type: Grant
    Filed: March 22, 2000
    Date of Patent: March 5, 2002
    Assignee: Archimica (Florida), Inc.
    Inventors: Timothy N. Biggs, Benigno A. Janeiro
  • Patent number: 6350345
    Abstract: This invention has its object to provide a curable resin compositions useful as contact adhesives with a prolonged tack retention period, without affecting the final bond strength. This invention is related to a A curable resin composition which comprises (I) a reactive silicon group-containing polyether oligomer, (II) a copolymer comprising a molecular chain substantially composed of one or more acrylate ester monomer units and/or methacrylate ester monomer units and (III) an accelerator.
    Type: Grant
    Filed: June 1, 2000
    Date of Patent: February 26, 2002
    Assignee: Kaneka Corporation
    Inventors: Jun Kotani, Masato Kusakabe, Hiroshi Iwakiri
  • Publication number: 20020016434
    Abstract: The invention discloses a novel method for the preparation of globular particles of a silicone resin or, in particular, a polyorganosilsesquioxane resin having properties suitable as an adjuvant in hair-care toiletry preparations by the hydrolysis condensation reaction of an organotrialkoxy silane compound such as methyl trimethoxysilane in an aqueous alkaline medium. Characteristically, the aqueous reaction medium is alkalified with ammonia or, preferably, an amine compound, e.g., mono(n-alkyl) amine compound, to have a specified pH value of 10.0 to 13.0 and the hydrolysis condensation reaction of the starting silane compound in the aqueous medium is conducted in the presence of metallic ions or, in particular, magnesium ions in a specified concentration of 1×10−5 to 1×10−2 mole/liter.
    Type: Application
    Filed: August 1, 2001
    Publication date: February 7, 2002
    Applicant: Shin-Etsu Chemical Co., Ltd.
    Inventor: Yoshinori Inokuchi
  • Patent number: 6340735
    Abstract: A coating solution of a poly(phenylsilsesquioxane) ladder polymer having a weight average molecular weight of 4,000-100,000 in a suitable solvent is spin coated and heated to form a dense dielectric film having a low dielectric constant.
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: January 22, 2002
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventor: Fujio Yagihashi
  • Patent number: 6339137
    Abstract: The present invention provides near quantitative yields of greater than about 95% isomeric purity of poly(3-aminopropylmethylsiloxanes) of the general formulae: Me3Si(H2NCH2CH2CH2MeSiO)xOSiMe3 (H2NCH2CH2CH2MeSiO)y wherein Me is methyl, x may range from 2 to about 100 and y may range from 3 to about 7. The present invention also provides a simple method for rapidly producing poly(3-aminopropylmethylsiloxanes) of the general formulae: Me3Si(H2NCH2CH2CH2MeSiO)xOSiMe3 (H2NCH2CH2CH2MeSiO)y wherein Me is methyl, x may range from 2 to over 100 and y may range from 3 to about 7, the method comprising heating of 3-(3-aminopropyl)-1,1,1,3,5,5,5-heptamethyltrisiloxane, of at least 95% isomeric purity, with a basic catalyst, removing hexamethyldisiloxane, and decomposing the catalyst.
    Type: Grant
    Filed: March 22, 2000
    Date of Patent: January 15, 2002
    Assignee: Archimica (Florida) Inc.
    Inventors: Timothy N. Biggs, Benigno A. Janeiro
  • Patent number: 6339124
    Abstract: A silicone rubber composition comprising an organopolysiloxane containing at least two alkenyl radicals and having a degree of polymerization of at least 100, an organopolysiloxane or organosilane, reinforcing silica, and an alkali metal salt of phosphoric acid has minimized plasticity recovery with time and improved storage stability and cures with an organic peroxide or addition reaction curing agent into a silicone rubber having improved compression set and yellowing resistance.
    Type: Grant
    Filed: June 12, 2000
    Date of Patent: January 15, 2002
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Minoru Igarashi, Yutaka Hagiwara
  • Patent number: 6329449
    Abstract: The invention relates to a process for the preparation of finely divided rubbers (rubber powders) by precipitation from aqueous mixtures, which comprise filler in the form of suspensions, water-soluble salts of a metal of groups IIa, IIb, IIIa and VIII of the periodic table of the elements arid a rubber latex (polymer latex), aqueous emulsions of a rubber or rubber solution, in which one or more organosilicon compound(s) containing at least one alkoxy group is or are dissolved or emulsified, optionally in the presence of a surface-active substance, in water, or the compounds mentioned are mixed directly, optionally with a surface-active substance, with an aqueous suspension of an oxidic or silicatic finely divided filler or a mixture of these fillers at a temperature of 10 to 60° C., preferably at room temperature, while stirring, the amount of this mixture envisaged for incoporation in the rubber, based on the filler content, in general being divided into two batches.
    Type: Grant
    Filed: September 22, 1999
    Date of Patent: December 11, 2001
    Assignee: PKU Pulverkautschuk Union GmbH
    Inventors: Udo Gorl, Reinhard Stober, Hartmut Lauer, Uwe Ernst
  • Patent number: 6313253
    Abstract: The invention relates to a process for the condensation of compounds which carry silanol groups and have at least one unit of the general formula (III) AcEdSiO(4-c-d)/2  (III) in which A is a hydroxyl group, E is an inert radical, c is 1, 2, 3 or 4 and d is 0, 1 or 2, with the proviso that c+d ≦4, in which higher molecular weight organosiloxane compounds are prepared by employing with a catalyst system comprising a catalyst which is chosen from basic alkali metal and alkaline earth metal compounds and a cocatalyst which is an at least bidentate chelating ligand and contains units of the general formula (I) N—R1—N  (I)  in which R1 is a divalent linear, cyclic and/or aromatic C1-to C30-hydrocarbon radical.
    Type: Grant
    Filed: January 6, 2000
    Date of Patent: November 6, 2001
    Assignee: Wacker-Chemie GmbH
    Inventors: Frank Baumann, Bernward Duebzer, Chantal Delagnes
  • Patent number: 6294634
    Abstract: A method of preparing organosilicon compositions by heating various mixtures of (i) dimethylcyclosiloxanes or methylhydrogencyclosiloxanes, (ii) homopolymeric and copolymeric cyclosiloxanes containing a C5 or more carbon atom containing group, and (iii) homopolymeric and copolymeric cyclosiloxanes containing an oxyalkylene segment, in the presence of a catalyst, at a temperature and for a time sufficient to cause polymerization of cyclosiloxanes (i) to (iii) to the desired organosilicon composition.
    Type: Grant
    Filed: March 28, 2000
    Date of Patent: September 25, 2001
    Assignee: Dow Corning Corporation
    Inventors: Michael Salvatore Ferritto, William James Schulz, Jr.
  • Patent number: 6288196
    Abstract: An organopolysiloxane gum is continuously prepared by (I) mixing at least one cyclopolysiloxane with an end capping agent, (II) feeding the mixture to a self-cleaning reactor along with an alkaline polymerization catalyst, and effecting polymerization at a temperature of 100 to 250° C. and under subatmospheric pressure, (III) continuously adding a neutralizing agent to the reaction mixture of step (II), thereby terminating the polymerization reaction, and (IV) continuously removing the cyclopolysiloxane and volatile components from the reaction mixture.
    Type: Grant
    Filed: December 2, 1999
    Date of Patent: September 11, 2001
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Masaharu Takahashi, Yutaka Hagiwara
  • Publication number: 20010020080
    Abstract: The coating composition according to the invention comprises:
    Type: Application
    Filed: February 7, 2001
    Publication date: September 6, 2001
    Applicant: Essilor Compagnie Generale D'Optique
    Inventors: Sidney Shaw White, Hoa Thien Dang, Sheila Tatman
  • Patent number: 6284906
    Abstract: This invention relates to methods for the preparation of hyperbranched siloxane polymers by anionic polymerization of a cyclotrisiloxane having the functional group Si—OH, and for the preparation of linear siloxane polymers by cationic or anionic polymerization of a cyclotrisiloxane having a vinylterminated functional group. Furthermore, this invention concerns novel cyclotrisiloxanes useful for the preparation of the aforementioned polymers.
    Type: Grant
    Filed: July 6, 2000
    Date of Patent: September 4, 2001
    Assignee: University of Southern California
    Inventors: Jyri Kalevi Paulasaari, William P. Weber
  • Patent number: 6285513
    Abstract: An optical element, comprises a silicon based resin satisfying following three conditional formulas: (1) (number of silicon atoms residing as R1SiO3/2 in the silicon based resin)/(total number of silicon atoms in the silicon based resin)≧0, (2) (number of silicon atoms residing as SiO4/2 in the silicon based resin)/(total number of silicon atoms in the silicon based resin)≧0, (3) {(number of silicon atoms residing as R1SiO3/2 in the silicon based resin)+(number of silicon atoms residing as SiO4/2 in the silicon based resin)}×100/(total number of silicon atoms in the silicon based resin)≧10%, wherein R1 represents a hydrogen atom, a hydroxyl group, an amino group, a halogen atom or an organic group.
    Type: Grant
    Filed: February 8, 2000
    Date of Patent: September 4, 2001
    Assignee: Konica Corporation
    Inventors: Toshio Tsuji, Shigeru Hosoe
  • Patent number: 6284908
    Abstract: A method for disproportionation of an oligohydridosiloxane to produce a polysilsesquioxane compound and an organohydridosilane compound when contacted with a basic catalyst. The basic catalyst can be a tetraalkylammonium hydroxide, an alkali metal hydroxide, and an alkali earth hydroxide. These basic catalysts are generally dissolved in an organic solvent for delivery. The hydroxide catalysts are attractive because many readily decompose by heating above 150° C., thus being easily removed from the final materials. The oligohydridosiloxane is contacted with the basic catalyst under conditions effective to catalytically convert the oligohydridosiloxane into a polysilsesquioxane compound and an organohydridosilane compound. The reaction can occur in either an inert or oxidative atmosphere and can occur without heating, at room temperature. Both polysilsesquioxane foams and gels of the formula (RSiO1.5)n can be produced.
    Type: Grant
    Filed: September 25, 2000
    Date of Patent: September 4, 2001
    Assignee: Sandia Corporation
    Inventors: Douglas A. Loy, Kamyar Rahimian
  • Patent number: 6281321
    Abstract: A curable coating composition has a binder comprising a compound or polymer (A) containing at least one primary or secondary amine group, a compound or polymer (B) containing at least one ethylenically unsaturated double bond activated by an adjacent electron-withdrawing group, and a polymer (C) containing at least two silicon-bonded alkoxy groups. Either (A) or (B) contains at least one silicon-bonded alkoxy group in its molecule. The coating is capable of curing at ambient temperature and humidity both by hydrolysis and condensation of the Si—O—C bonds of the polyorganosiloxane (C) and of the aminoalkyl silane (A) and by Michael-type addition reaction of the amine group of the aminoalkyl silane (A) with the activated ethylenically unsaturated double bonds of (B).
    Type: Grant
    Filed: May 28, 1999
    Date of Patent: August 28, 2001
    Assignee: Akzo Nobel N.V.
    Inventors: Sarah Anne Mackie Kelly, Christopher Robin Birkert, Adrian Ferguson Andrews
  • Patent number: 6271330
    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: August 12, 1999
    Date of Patent: August 7, 2001
    Assignee: FMC Corporation
    Inventors: Robert James Letchford, James Anthony Schwindeman, Roderic Paul Quirk
  • Patent number: 6268454
    Abstract: The invention relates to a novel amino acid silicon polymer with good adhesion to the keratin layer of the skin, a method of preparing the amino acid silicon polymer, a cosmetic particles surface-treated with the amino acid silicon polymer, and a color cosmetic composition including the cosmetic particles. According to the present invention, the particles surface-treated up to 3% to the maximum with the amino acid silicon polymer prepared by reacting an amino acid and a functional silicon polymer in the manner of organic synthesis have water resistance and usability peculiar to silicon-treated pigments and take positive surface charges, thereby offering good adhesion to the skin and durability. Due to these characteristics, the cosmetic containing the surface-treated particles of the present invention is superior in the cosmetic effect to that containing the conventional surface-treated particles.
    Type: Grant
    Filed: February 17, 2000
    Date of Patent: July 31, 2001
    Assignee: Pacific Corporation
    Inventors: Dong Hyuk Song, Yeong Jin Choi, Kil Joong Kim, Young Chul Lee
  • Patent number: 6265515
    Abstract: An antifoulant composition includes a fluorinated silicone resin: wherein R is the same or different group and stands for an alkyl of 1 to 10 carbon atoms, R′ is H or a lower alkyl of 1 to 10 carbon atoms, n is 2 to 10, x is at least 1 and y is at least 2.
    Type: Grant
    Filed: June 14, 1999
    Date of Patent: July 24, 2001
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Ann E. Mera, Kenneth J. Wynne
  • Patent number: 6262188
    Abstract: Compositions, comprising functionalized resins having the formula MxHMyRQ  (I) wherein x+y is in the range from 0.
    Type: Grant
    Filed: December 3, 1999
    Date of Patent: July 17, 2001
    Assignee: General Electric Company
    Inventors: Frank S. Burkus, II, Slawomir Rubinsztajn, Jacek Gulinski, Bogdan Marciniec
  • Patent number: 6258891
    Abstract: This invention is a solventless process for anionically polymerizing polysiloxane polymers. No volatile hydrocarbon solvent is used. A cyclic siloxane monomer and any comonomer are introduced into a molten polymer phase of a low molecular weight polymer that has a melting point within the polymerization temperature range for the cyclic siloxanes and the comonomer, for example, 30 to 80° C. which is the melting point range for polyethylene wax which is preferred. A non-volatile hydrocarbon oil with a melting point in this range may also be used, especially if a final polymer containing oil is desired. The cyclic siloxane monomer is anionically polymerized in the molten polymer phase or the oil at 30 to 150° C. Ethylene and styrene are preferred comonomers. The low molecular polymer or non-volatile oil is not separated from the polysiloxane after termination of the polymerization.
    Type: Grant
    Filed: November 16, 1999
    Date of Patent: July 10, 2001
    Assignee: Shell Oil Company
    Inventor: Ronald James Hoxmeier
  • Patent number: 6248853
    Abstract: A liquid state non-solvent silicone resin obtained from a polycondensation reaction of material (A) dimethyl poly siloxane, material (B) vinyl methyl cyclo siloxane and material (C) diphenyl dihydroxy silane, the reaction being performed at a temperature within about 140˜180° C. under the presence of an anionic polymerization catalyzer.
    Type: Grant
    Filed: January 5, 1999
    Date of Patent: June 19, 2001
    Assignee: Silitek Corporation
    Inventors: Yong Zhou Sun, Peng Zhao, Jian Liu, Chi-Lung Tsai
  • Patent number: 6235863
    Abstract: A method for producing a saturated siloxane polymer is provided. In one aspect, the method comprises hydrogenating an aromatic siloxane monomer by contacting it with hydrogen in a temperature of 100° C. to 200° C. and a hydrogen pressure of 1000 to 2000 psi for 1 to 6 hours in the presence of a hydrogenation catalyst to produce a hydrogenated siloxane monomer, and anionically polymerizing the hydrogenated siloxane monomer.
    Type: Grant
    Filed: November 17, 1999
    Date of Patent: May 22, 2001
    Assignee: Shell Oil Company
    Inventor: Ronald James Hoxmeier
  • Patent number: 6232424
    Abstract: Soluble silicone resin compositions having good solution stability and a method for their preparation.
    Type: Grant
    Filed: December 13, 1999
    Date of Patent: May 15, 2001
    Assignee: Dow Corning Corporation
    Inventors: Bianxiao Zhong, Russell Keith King, Kyuha Chung, Shizhong Zhang
  • Patent number: 6228921
    Abstract: A process is disclosed for the production of compounds based on hydrolyzable silanes containing epoxy groups. The process involves adding one of the following substances to a pre-hydrolyzed silicon compound A with at least one hydrolytically non-separable group which includes an epoxy ring: i) a particulate substance B which can be selected from oxides, oxyhydrates, nitrides or carbides of Si, Al and B, and of transition metals, the particle size being 1-100 nm; ii) a surface-active agent, preferably non-ionic; iii) an aromatic polyol with an average molecular weight not exceeding 1000. The compounds obtained through this process can be used to produce coatings and molded bodies with a range of properties, in particular high scratch resistance, lasting hydrophilic characteristics, corrosion resistance, good adhesion and transparency.
    Type: Grant
    Filed: October 28, 1999
    Date of Patent: May 8, 2001
    Assignee: Institut für Neue Materialien Gemeinnützige GmbH
    Inventors: Reiner Kasemann, Helmut Schmidt, Ertugrul Arpac, Volker Gerhard, Elisabeth Geiter, Georg Wagner
  • Patent number: 6225390
    Abstract: This invention is a silicone oil gel composition which is comprised of a silicone block copolymer selected from the group consisting of polyethylene-polydimethylsiloxane block copolymers and polystyrene-polydimethylsiloxane block copolymers wherein the overall number average molecular weight is from 2000 to 251,000, the polystyrene content (PSC) is 40% or less by weight, the polystyrene block number average molecular weight is from 1000 to 30,000, and the polyethylene number average block molecular weight is from 1000 to 20,000, the polydimethylsiloxane number average molecular weight is from 1000 to 250,000, wherein the block copolymer is dissolved in a silicone oil which is a cyclic or linear siloxane monomer. Preferred siloxane monomers for use herein are (Me2SiO)3, (Me2SiO)4, and (Me2SiO)5.
    Type: Grant
    Filed: May 7, 1999
    Date of Patent: May 1, 2001
    Assignee: Shell Oil Company
    Inventor: Ronald James Hoxmeier
  • Patent number: 6221996
    Abstract: An organopolysiloxane gum is prepared by polymerizing a cyclic organosiloxane with a low molecular weight, linear organopolysiloxane end-blocked with a triorganosilyl group in the presence of an alkaline catalyst. The polymerization reaction is effected under a reduced pressure, typically of 500 mmHg or lower.
    Type: Grant
    Filed: November 12, 1999
    Date of Patent: April 24, 2001
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Keiji Shibata, Kenji Tawara
  • Patent number: 6218495
    Abstract: A three-stage process for the continuous preparation of RTV-1 compositions comprises, in a first step, preparing a raw mixture of &agr;,&ohgr;-dihydroxypolydiorganosiloxane, filler and, if desired, further constituents, in a second step, freeing the raw mixture of gas inclusions under reduced pressure and, if desired, mixing it with further constituents and, in a third step, mixing the degassed raw mixture with a crosslinker, a condensation catalyst and, if desired, additional constituents not yet added in the first and second steps.
    Type: Grant
    Filed: February 24, 1999
    Date of Patent: April 17, 2001
    Assignee: Wacker-Chemie GmbH
    Inventors: Rudolf Braun, Helmut Wöhrl, Werner Trajer, Johann Steiner, Thomas Felber
  • Patent number: 6218494
    Abstract: The coating composition according to the invention comprises: (A) a component which is the reaction product with oxalic acid of at least one organometallic compound of formula: R1y—M(OR)x-y   (I) wherein, M is a metal R is H or an alkyl radical, R1 is a chelating ligand, x is the valency of the metal, y is an integer at least equal to 1 and x-y is at least equal to 1; and (B) at least one organoalkoxysilane of formula: R3nSi(OR2)4-n   (II) wherein, R2 is an alkyl radical, R3 is an epoxidized alkyl group and n is an integer from 1 to 3 or a mixture of the organoalkoxysilane of formula (II) with an alkoxysilane of formula (II′) R′n′Si(OR″)4-n′  (II′) wherein n′ is an integer from 0 to 3, R″ is H, an alkyl radical or an alkoxyalkyl radical, and R′ is a vinyl, (meth)acryl, aromatic, cyclic or aliphatic alkyl radical. Application for making abrasion-resistant coating on plastic ophtalmic lenses.
    Type: Grant
    Filed: November 18, 1998
    Date of Patent: April 17, 2001
    Assignee: Essilor International - Compagnie Generale d'Optique
    Inventors: Sidney Shaw White, Jr., Hoa Thien Dang, Sheila Tatman
  • Patent number: 6207781
    Abstract: An organofunctional cocyclic siloxane, i.e., a dialkyl, alkyl aminoalkyl cocyclic siloxane, is used to prepare copolymeric siloxane fluids, copolymeric siloxane gums, and terpolymeric siloxanes via three polymerization techniques. In one embodiment, the dialkyl, alkyl aminoalkyl cocyclic siloxane is polymerized using a bulk polymerization technique. In another embodiment, the dialkyl, alkyl aminoalkyl cocyclic siloxane is polymerized using an emulsion polymerization technique. In an additional embodiment, the dialkyl, alkyl aminoalkyl cocyclic siloxane is polymerized using a microemulsion polymerization technique. The dialkyl, alkyl aminoalkyl cocyclic siloxane most preferred is a dimethyl, methyl aminoalkyl cocyclic siloxane.
    Type: Grant
    Filed: August 20, 1999
    Date of Patent: March 27, 2001
    Assignee: Dow Corning Corporation
    Inventors: Daniel Joseph Halloran, Brett Lee Zimmerman
  • Patent number: 6187834
    Abstract: This invention relates to a radiation curable silicone coating composition comprising an alkoxylated resin-polymer organosilicone network containing radiation curable functionality and a cationic photoinitiator. The radiation curable silicone compositions of this invention are useful as fast curing low and high release coating compositions which are especially suitable for release of pressure sensitive adhesives.
    Type: Grant
    Filed: September 8, 1999
    Date of Patent: February 13, 2001
    Assignee: Dow Corning Corporation
    Inventors: Leroy Elton Thayer, James Steven Tonge, Gary Allen Vincent
  • Patent number: 6180249
    Abstract: A condensation curable coating composition comprises the following and any reaction product thereof: (A) a room temperature vulcanizable polyorganosiloxane composition; and (B) a marine foul release-enhancing proportion of at least one organic compatible silicone fluid free from silanol groups and being capable of blooming to the surface of a cured product of component A.
    Type: Grant
    Filed: September 8, 1998
    Date of Patent: January 30, 2001
    Assignee: General Electric Company
    Inventor: Judith Stein
  • Patent number: 6174982
    Abstract: A method for producing polysilanes comprising subjecting a dihalosilane of the general formula (wherein m is 1 to 3; R represents hydrogen atom, alkyl group, aryl group, alkoxy group, amino group or silyl group and two Rs are the same or different in case of m=1, four Rs are the same or at least two of them are different in case of m=2 and six Rs are the same or at least two of them are different in case of m=3; X represents halogen atom) to the action of Mg or Mg alloy in an aprotic solvent in the presence of Li salt and metal halide, thereby producing polysilane represented by the general formula (wherein R is as defined above corresponding to the starting material; n is 2 to 1000).
    Type: Grant
    Filed: June 22, 1999
    Date of Patent: January 16, 2001
    Assignee: Osaka Gas Company Limited
    Inventors: Ryoichi Nishida, Shinichi Kawasaki, Hiroaki Murase
  • Patent number: 6166163
    Abstract: A process for producing an organosilicon resin is disclosed. The process includes the steps of equilibrating a mixture of silane compounds of Si(OR.sup.3).sub.4 wherein R.sup.3 's are a monovalent hydrocarbon group having 1 to 6 carbon atoms; R.sup.2 Si(OR.sup.4).sub.3 wherein R.sup.2 is a monovalent hydrocarbon group having 1 to 20 carbon atoms, and R.sup.4 's are a monovalent hydrocarbon group having 1 to 6 carbon atoms; and R.sup.1.sub.3 SiX wherein X is an --OH group, an --OSiR.sup.1.sub.3 group or a hydrolyzable group, and R.sup.1 's are a monovalent hydrocarbon group having 1 to 6 carbon atoms; adding water to the product of the equilibration reaction to carry out hydrolysis reaction; and adding an aqueous alkali to the product of the hydrolysis reaction to carry out condensation reaction. The organosilicon resin obtained is well dispersible in a resin premix containing a polyol, a blowing agent, a catalyst and a foam stabilizer, and also is highly hydrophobic and low reactive.
    Type: Grant
    Filed: June 13, 2000
    Date of Patent: December 26, 2000
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Muneo Kudo, Shinichi Morioka, Mitsuo Asai
  • Patent number: 6162888
    Abstract: The present invention relates to a method of making a silicone polyether comprising (I) reacting a mixture comprising an olefin functional polyether, an organohydrogensiloxane, and a homogeneous transition metal hydrosilylation catalyst, and (II) subjecting the product of (I) to hydrogen gas. The method of this invention reduces the amount of olefinic species present which are precursors to odorous compounds. Thus the method of this invention reduces the amount of odor in the silicone polyether product. These odors are objectionable, particularly in personal care applications.
    Type: Grant
    Filed: May 17, 1999
    Date of Patent: December 19, 2000
    Assignee: Dow Corning Corporation
    Inventors: Kenneth Michael Lee, Lenin James Petroff, William James Schulz, Jr.
  • Patent number: 6160045
    Abstract: This invention is a silicone oil gel composition which is comprised of a silicone block copolymer selected from the group consisting of polyethylene-polydimethylsiloxane block copolymers and polyethylene-polydimethylsiloxane-polydiphenylsiloxane block copolymers wherein the overall number average molecular weight ranges from 1000 to 21,000, preferably 1000 to 6000. The polyethylene blocks have a number average molecular weight of 400 to 3000, preferably 400 to 1500, the polydimethylsiloxane blocks have a number average molecular weight of 600 to 20,000, preferably 600 to 10,000, and the polydiphenylsiloxane blocks have a number average molecular weight of 200 to 2000, preferably 600 to 1200, wherein the block copolymer is dissolved in a silicone oil which is a polydimethylsiloxane polymer having a number average molecular weight of from 1000 to 1,000,000, preferably 4000 to 30,000.
    Type: Grant
    Filed: May 7, 1999
    Date of Patent: December 12, 2000
    Assignee: Shell Oil Company
    Inventors: Ronald James Hoxmeier, David Romme Hansen
  • Patent number: 6153717
    Abstract: This invention relates to a polysiloxane with a comb-like structure and with tertiary amine groups, and the method of preparing the same. The polysiloxane of the invention does not include any active hydrogen groups so that the amount of the amine groups can increase, which in turn improves the effect of self-emulsification. This makes the polysiloxane applicable in water-soluble resins, for example as an accelerator in water-soluble epoxy resin or water soluble fiber dying treating agent. When used as fiber treatment agent, the polysiloxane will not cause yellowing.
    Type: Grant
    Filed: April 20, 1998
    Date of Patent: November 28, 2000
    Assignee: Industrial Technology Research Institute
    Inventors: Lie-Zen Chung, Yuan-Der Wu
  • Patent number: 6150488
    Abstract: Star- and comb-type branched organosilicon compounds containing .omega.-terminated organopolysiloxane branches are readily synthesized by the catalyzed or uncatalyzed reaction of an at least tris(organyloxy)-functional organosilicon compound with a predetermined amount of substantially linear minimally disilanol-functional organopolysiloxane. Well defined, non-resinous, liquid products of low viscosity may be obtained.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: November 21, 2000
    Assignee: Wacker Silicones Corporation
    Inventor: Eugene R. Martin
  • Patent number: 6140444
    Abstract: The invention relates to a catalyst system for reacting a silanol group with an alkoxysilane containing a polymerizable ethylenically unsaturated group. The catalyst system includes an organo-lithium reagent and a hydroxylamine. The catalyst system, permits reaction of the silanol group with alkoxysilanes containing rapidly polymerizable ethylenically unsaturated groups, such as an acryloxyalkyl group, for instance an acryloxypropyl group.
    Type: Grant
    Filed: January 19, 1999
    Date of Patent: October 31, 2000
    Assignee: Loctite Corporation
    Inventors: Michael P. Levandoski, Hsien-Kun Chu