Calcium, E.g., Calcium Carbonate, Etc. Patents (Class 524/788)
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Patent number: 6417263Abstract: A heat curable silicone rubber composition, having improved resistance to engine coolants and oils, including long-life coolants and synthetic motor oils, comprises: (A) 100 parts by weight of an organosiloxane polymer base comprising an organosiloxane polymer containing at least 2 silicon-bonded alkenyl groups in each molecule and 1 to 65 weight percent reinforcing silica filler, (B) curing component sufficient to cure the composition when heated, and (C) an effective amount of at least one metal salt additive selected from the group consisting of monobasic alkali metal phosphates, alkali metal oxalates, alkali metal tartrates, alkali metal tetraborates, alkali metal phthalates, alkali metal citrates; dibasic metal phosphates where the metal is selected from the group consisting of sodium, potassium, calcium and magnesium; metal acetates, where the metal is selected from the group consisting of sodium, potassium, calcium, magnesium; metal sulfates where the metal is selected from the group consisting of sType: GrantFiled: October 12, 1999Date of Patent: July 9, 2002Assignee: Dow Corning CorporationInventors: Jonathan Vierling DeGroot, Jr., Lawrence Dale Fielder, William James Schulz, Jr., Antony Pope Wright
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Patent number: 6346070Abstract: The present invention provides a catalyst for polyester production capable of producing a polyester with high catalytic activity and a process for producing a polyester using the catalyst. The catalyst for polyester production comprises a solid titanium compound which is obtained by dehydro-drying a hydrolyzate obtained by hydrolysis of a titanium halide and which has a molar ratio (OH/Ti) of a hydroxyl group (OH) to titanium (Ti) exceeding 0.09 and less than 4. The present invention also provides a method to obtain a polyester having a small increase of the acetaldehyde content during the molding. This method comprises bringing a polyester, which is obtained by the use of a titanium compound catalyst and in which the reaction has been completed, into contact with a phosphoric ester aqueous solution or the like having a concentration of not less than 10 ppm in terms of phosphorus atom.Type: GrantFiled: December 22, 1999Date of Patent: February 12, 2002Assignee: Mitsui Chemicals IncInventors: Takeshi Ohmatsuzawa, Fujito Ehara, Hideshi Hori, Kazuo Toyota, Kenzaburou Fukutani, Junichi Imuta, Akiyoshi Shimizu, Takayuki Onogi, Seiji Noda, Masayuki Sakai, Shoji Hiraoka, Koji Nakamachi, Michio Tsugawa, Satoru Miyazoe
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Patent number: 6316535Abstract: An aqueous, two component system for coating a substrate includes either a filler incorporated in both components prior to combining the components or an elevated amount of a filler, such as 50% by dry volume, in either component. The filler is preferably calcium carbonate, but may also be selected from titanium dioxide, sand, clay, mica, dolomite, silica, talc, perlite, gypsum, wallastonite, aluminum trihydrate, zinc oxide, barium sulfate, zinc sulfate, and combinations thereof. The first component includes a first polymer containing hydroxyl functional groups or amine functional groups and, optionally, a catalyst, preferably an organotin catalyst. The first polymer is selected from a polyester polyol, an acrylic polyol, a urethane polyol, a polyether polyol, a polyamine, an aldimine, a short oil alkyd, a silicone polyol, a cellulose ester, a vinyl polyol, and combinations thereof and preferably is a polyaspartic ester.Type: GrantFiled: May 18, 1999Date of Patent: November 13, 2001Assignee: Armstrong World Industries, Inc.Inventors: Kenneth G. Caldwell, Raymond H. Fernando, Vijaya K. Pidugu
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Patent number: 6313235Abstract: The present invention provides a method for preparing polypropylene terephthalate/polyethylene terephthalate (PPT/PET) copolyester, which comprises a group of processes from (a) to (e). Process (a) comprises subjecting bis-2-hydroxyethyl terephthalate (BHET), pure terephthalic acid (PTA) and 1,3-propanediol (1,3-PDO) to undergo esterification reaction to produce BHET and bis-2-hydroxypropyl terephthalate (BHPT), and then subjecting BHET and BHPT to undergo copolymerization reaction. Process (b) comprises subjecting PTA and 1,3-PDO to undergo esterification reaction to produce BHPT, adding BHET, and then subjecting BHET and BHPT to undergo copolymerization reaction. Process (c) comprises subjecting BHET and BEPT to undergo copolymerization reaction. Process (d) comprises subjecting PTA, ethylene glycol (EG) and 1,3-PDO to undergo esterification reaction to produce BHET and BHPT, and then subjecting BHET and BHPT to undergo copolymerization reaction.Type: GrantFiled: April 21, 2000Date of Patent: November 6, 2001Assignee: Industrial Technology Research InstituteInventors: Tung-Ying Kuo, I-Min Tseng, Jih-Chen Huang, Wen-Chuan Shu
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Patent number: 6303730Abstract: The invention relates to transparent organic/inorganic composites with low hydroxyl group content, based on silicic acid heteropolycondensates having extremely low water uptakes. These composites are obtained for example by nonhydrolytic condensation of chlorosilanes with polymerizable groups and optionally fluorinated groups, with the help of a condensation agent (e.g., t-butanol) capable of non-hydrolytic condensation of this chlorosilane, and thermal and/or photochemical polymerization of the obtained condensation product, preferably in the presence of preferably fluorinated organic monomers.Type: GrantFiled: August 19, 1999Date of Patent: October 16, 2001Assignee: Institut fur Neue Materialien gemeinnutzige GmbHInventors: Kira Fries, Martin Mennig, Helmut Schmidt, Ulrich Sohling, Qiwu Xing, Michael Zahnhausen
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Patent number: 6297350Abstract: Copolyesters are prepared using cyclic esters or carbonates as monomers and a metallic salt of the formula Me2+X2 as catalyst. Me2+ represents Ca, Fe(II), Mg, Mn(II) or Zn, and X is an anion of an aminocarboxylic acid, hydroxycarboxylic acid or a halide. Monomer and catalyst are used in a monomer/catalyst ratio of greater than 100.Type: GrantFiled: February 15, 2000Date of Patent: October 2, 2001Assignee: Ferring GmbHInventors: Hans R. Kricheldorf, Ingrid Kreiser-Saunders, Dirk-Olaf Damrau
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Patent number: 6284744Abstract: A solution of hyaluronic acid and water-soluble salts thereof in a pharmaceutically acceptable media in which the hyaluronic acid concentration is at least about 0.4% by weight based on the weight of the solution and the solution having a viscosity at 25° C. of from about 500 to about 10,000 centipoises, serving as a carrier for medicaments to the peritoneal cavity.Type: GrantFiled: May 11, 1992Date of Patent: September 4, 2001Inventor: Gere S. Di Zerega
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Patent number: 6277902Abstract: The present invention relates to rubber compounds comprising one or more soluble rubbers, hydrophobized filler, and one or more sulfane-silane compounds on an inorganic or organic support and to a process for making them. The novel rubber compounds are suitable for moldings of every kind, especially tires or tire treads having low rolling resistance and high resistance to abrasion.Type: GrantFiled: April 16, 1999Date of Patent: August 21, 2001Assignee: Bayer AktiengesellschaftInventor: Thomas Scholl
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Patent number: 6254981Abstract: The disclosure describes methods for producing bulk, particulate material that includes solid, generally ellipsoidal particles. Irregularly shaped feed particles with average particle sizes of up to 25 microns on a volume basis are dispersed in at least a portion of a combustible gas mixture by application of force and/or fluidizing agents. The combustible mixture with particles in suspension is then delivered, while controlling agglomeration or re-agglomeration of the particles, to at least one flame front. There, the mixture and suspended particles are uniformly distributed across the surface(s) of and passed through the flame front(s) with a high concentration of particles in the mixture. This flame front and the resultant flame(s) with suspended particles are located in at least one “wall free” zone. In such zone(s) the flame(s) may expand while the particles are maintained in dispersion and heated, with controlled and highly efficient application of heating energy.Type: GrantFiled: September 29, 1999Date of Patent: July 3, 2001Assignee: Minnesota Mining & Manufacturing CompanyInventor: Richard B. Castle
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Patent number: 6239378Abstract: A curable silicone wire and cable coating composition with improved flame resistance at heat flux rates of 50 to 90 kW/m2, made by mixing ingredients comprises: (A) 30 to 90 weight percent of a heat-curable non-halogenated organosiloxane polymer, containing at least 2 alkenyl groups per molecule, (B) 1 to 65 weight percent of a reinforcing silica filler, based on the total composition, (C) 5 to 70 weight percent wollastonite having an average particle size of 2 to 30 &mgr;m, based on the total composition, and (D) curing component sufficient to cure the composition.Type: GrantFiled: February 2, 1999Date of Patent: May 29, 2001Assignee: Dow Corning CorporationInventor: Kiersten Lynn Shephard
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Patent number: 6218461Abstract: A silicone composition curing at room temperature by condensation, which is suitable especially as a dental molding composition. The silicone composition consists of the a) base paste containing a filler and polyorganosiloxane having hydroxy groups, b) and the activator component containing in addition to crosslinking agent and catalyst also a polyaddition product with alkoxysilyl groups in the molecule. The base paste and activator component can be mixed uniformly together and can be offered with special advantage in double cartridges.Type: GrantFiled: February 23, 1999Date of Patent: April 17, 2001Assignee: Heraeus Kulzer GmbH & Co. KGInventors: Peter Schwabe, Michael Freckmann, Klaus-Dieter Nehren
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Patent number: 6180589Abstract: The invention provides novel polyether hydroxycarboxylate copolymers which are effective sequestering agents. The polyether hydroxycarboxylate copolymer when used in a cleaning composition enhances or “builds” the cleaning efficiency of the surfactant by inactivating hardness ions. In addition, the polyether hydroxycarboxylate copolymers assist in cleaning by dispersing and suspending soils to prevent the redeposition of soils. The polyether hydroxycarboxylate copolymer has the structure wherein M+ is a cation wherein M is independently selected from hydrogen, ammonia, alkali metals, alkaline earth metals, zinc, copper, organic amines, amino acids, and amino saccharides; R2 and R3 are independently hydrogen or a substituted or unsubstituted alkyl group having 1 to 4 carbon atoms; n is from about 2 to about 100; x1 and x2 are independently 0 or 1; a is from 0 to 99 mole percent; and b is from 100 to 1 mole percent, provided that (a+b) is 100 mole percent.Type: GrantFiled: January 5, 1999Date of Patent: January 30, 2001Assignee: National Starch and Chemical Investment Holding CorporationInventors: Klein A. Rodrigues, Allen M. Carrier
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Patent number: 6127503Abstract: An organic silicon compound having at least one phenyl skeleton, at least one nitrogen atom, and at least one SiH radical is added to an adhesive silicone composition comprising a diorganopolysiloxane containing at least two alkenyl radicals, an organohydrogenpolysiloxane containing at least two SiH radicals, and a platinum catalyst. The composition firmly adheres to organic resins, especially polyamide and polyimide resins, but not to metals.Type: GrantFiled: November 4, 1998Date of Patent: October 3, 2000Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Kazutoshi Fujioka, Hironao Fujiki
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Patent number: 6127080Abstract: A process for the preparation of an unsaturated polyester which comprises (i) reacting an organic diol with a cyclic akylene carbonate in the presence of a first catalyst to thereby form a polyalkoxy diol, and (ii) optionally adding thereto a further amount of cyclic alkylene carbonate in the presence of a second catalyst, and (iii) subsequently polycondensing the resulting mixture with a dicarboxylic acid.Type: GrantFiled: March 10, 2000Date of Patent: October 3, 2000Assignee: Xerox CorporationInventors: Guerino G. Sacripante, Daniel A. Foucher, J. Stephen Kittelberger, Dongming Li, Marko D. Saban, Alan E. J. Toth, Robert D. Bayley
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Patent number: 6114438Abstract: An oxime curable silicone sealant composition with good oil resistance can be formulated, using calcium carbonate filler with higher water content than previously known to be useful. The sealant formulation is adjusted to accommodate higher water content by adjusting the ketoximosilane crosslinker level. The correct amount of crosslinker is determined by the hydroxy content present from both the silanol on the base polymer and the water content of the filler.Type: GrantFiled: September 8, 1995Date of Patent: September 5, 2000Assignee: Dow Corning CorporationInventor: Loren Dale Lower
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Patent number: 6100328Abstract: Disclosed herein is a method for the production of reinforced thermoplastic and thermoadhesive polymers, used to make shaped reinforcing pieces for footwear in general, including sports shoes, these reinforced condensation polymers resulting from the polymerization of monomers such as lactones--specifically epsilon caprolactone, and condensable systems of two components, specifically polyisocyanates, polyols or polyolpolyesters--in the presence of reinforcing materials and, optionally, filling materials. The reinforced thermoplastic and thermoadhesive polymers are obtained in the form of sheets, from which the units or pieces are cut to a specified pattern, for example for the toecap, the heel piece or the inner sole.Type: GrantFiled: September 13, 1996Date of Patent: August 8, 2000Assignee: Fapiquim S.A.Inventors: Jorge Alejandro Lopez Poy, Daniel Angel Zoia
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Patent number: 6077898Abstract: The present invention relates to aqueous paint suspensions containing a film-forming polymer. The invention also relates to aqueous aerosol paint compositions incorporating such suspensions. In particular, the invention relates to aqueous aerosol paint compositions suitable for temporary marking applications. The dried film resulting from application of such aerosol paint compositions is removable upon addition of water.Type: GrantFiled: April 13, 1999Date of Patent: June 20, 2000Assignee: Seymour of SycamoreInventor: Mac Glee S. Flores
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Patent number: 6063827Abstract: A process for the preparation of an unsaturated polyester which comprises (i) reacting an organic diol with a cyclic akylene carbonate in the presence of a first catalyst to thereby form a polyalkoxy diol, and (ii) optionally adding thereto a further amount of cyclic alkylene carbonate in the presence of a second catalyst, and (iii) subsequently polycondensing the resulting mixture with a dicarboxylic acid.Type: GrantFiled: July 22, 1998Date of Patent: May 16, 2000Assignee: Xerox CorporationInventors: Guerino G. Sacripante, Daniel A. Foucher, J. Stephen Kittelberger, Dongming Li, Marko D. Saban, Alan E. J. Toth, Robert D. Bayley
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Patent number: 6031026Abstract: In a first step, a crosslinkable organopolysiloxane oil (2) is mixed with an inorganic filler (3) in a flow jet mixer (1) to form a flowing silicone rubber compound. In a second step, the silicone rubber compound is fed into a tank (6) equipped at the bottom with a vacuum discharge pump (8) and maintained in vacuum where the compound is continuously deaerated, and a thixotropy controlling agent (10) is then added and mixed with the compound in a mixer (9). In a third step, a crosslinking agent (12) is added and mixed with the silicone rubber compound in a KRC kneader (11), and the compound is degassed in a mixer (13). The process continuously produces an RTV silicone rubber composition which is anti-sagging and improved in applicability on use.Type: GrantFiled: June 12, 1998Date of Patent: February 29, 2000Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Yuki Tateyama, Yoshiharu Konya, Takao Kanaya
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Patent number: 6008284Abstract: A fast curing alkoxy-functional room temperature vulcanizing (RTV) composition which is curable in the presence of moisture comprising polymers comprising on average at least 1.2 alkoxysilyl chain terminations per molecule, a tetraalkoxytitanium compound, a filler, and an alkoxysilane, each component being added in amounts to satisfy defined molar ratios.Type: GrantFiled: December 23, 1997Date of Patent: December 28, 1999Assignee: Dow Corning CorporationInventors: Kimberly Kay Nylund, Richard Alan Palmer
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Patent number: 5994456Abstract: A composition comprising (A) at least one mercapto-functional organosilicon compound having an average of a least two mercapto groups per molecule and (B) a cure initiator. The mercapto-functional organosilicon compound may include mercapto-functional organosilanes, mercapto-functional organosiloxanes, and mercapto-functional copolymers. The compositions of the present invention polymerize or cure to form compositions comprising reaction products of components (A) and (B). The cure initiator is a metal salt that produces a uniform cure throughout the composition, regardless of the amount of oxygen present. The cured products range in properties from soft gels to though elastomers to hard resins and are useful as molded articles, electrical encapsulants, and sealants.Type: GrantFiled: April 9, 1998Date of Patent: November 30, 1999Assignee: Dow Corning CorporationInventors: Jerome Melvin Klosowski, Sarah Severson Snow
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Patent number: 5973065Abstract: The pot life of a polyurethane composition is increased by providing a composition containing a polyisocyanate, polyol, highly dispersed silica, and a filler wherein at least a portion of the filler is coated.Type: GrantFiled: May 28, 1997Date of Patent: October 26, 1999Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Lothar Thiele, Nicole Schlingloff, Claudia Plutniok
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Patent number: 5948854Abstract: 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: GrantFiled: September 25, 1997Date of Patent: September 7, 1999Assignees: Dow Corning S.A., Dow Corning CorporationInventors: Francois de Buyl, Robert H. Krahnke, Timothy B. Lueder, Richard A. Palmer
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Patent number: 5948853Abstract: One component room temperature vulcanizable silicone sealant compositions comprising both a specific cross linker, ethyltriacetoxysilane, and a specific extending filler, stearic acid treated calcium carbonate, exhibit an extended work life or tooling time.Type: GrantFiled: January 26, 1996Date of Patent: September 7, 1999Assignee: General Electric CompanyInventors: Brian P. Bayly, Frederick R. DeCelle, Van W. Stuart
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Patent number: 5936032Abstract: The present invention provides for a two component room temperature vulcanizable silicone compositions wherein both components may be used in approximately equal weights or volumes thereby minimizing the effects of mixture ratio errors.Type: GrantFiled: February 26, 1997Date of Patent: August 10, 1999Assignee: General Electric CompanyInventor: Richard O. Angus, Jr.
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Patent number: 5929143Abstract: The present invention provides novel vinyl containing organopolysiloxane elastomers which possess excellent low compression set and heat aging characteristics and which can advantageously be formulated into liquid silicone elastomer moldable compositions.Type: GrantFiled: October 16, 1997Date of Patent: July 27, 1999Assignee: General Electric CompanyInventors: Brian John Ward, Edward Matthew Jeram, Richard Albert Striker
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Patent number: 5900458Abstract: A curable composition is disclosed and comprises the following components.(A) 100 parts by weight of a oxypropylene polymer having a polymer main chain containing a repeating unit represented by the following formula ##STR1## and having at least one group containing a silicon atom bonded to a hydroxyl group and/or a hydrolyzable group and capable of crosslinking by forming a siloxane bond, wherein Mw/Mn thereof is not more than 1.6 and the number average molecular weight is at least 6,000,(B) from 1 to 200 parts by weight of a filler having a BET specific surface area of not higher than 10 m.sup.2 /g, and(C) from 0.1 to 20 parts by weight of a curing catalyst, said composition containing substantially no plasticizer.Type: GrantFiled: September 5, 1995Date of Patent: May 4, 1999Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Masayuki Fujita, Michihide Honma, Hiroshi Wakabayashi
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Patent number: 5895794Abstract: A crosslinked polysiloxane dispersion comprising a siloxane polymer, polymer mixture, or polymer/solvent mixture, capable of crosslinking via condensation, addition or free radical reactions, and having a viscosity of greater than 5000 mPa.s but less than 500,000 mPa.s, if required, 0.1 to 10 weight parts of a crosslinking agent, and, if required, depending on the nature of the catalyst and silicon cure system, 0.000001 to 10 weight parts of a catalyst, 0.5 to 10 weight parts of a surfactant or surfactant mixture, and 0.5 to 25 weight parts water per 100 weight parts siloxane polymer. Optionally, adhesion promoters, pigments, reinforcing or non-reinforcing fillers, silicone resins, stabilizers, freeze/thaw additives, etc. may also be added to the dispersion.Type: GrantFiled: April 27, 1995Date of Patent: April 20, 1999Assignee: Dow Corning CorporationInventors: Daniel Trent Berg, Donald Taylor Liles, Leon Andre Marteaux, Nick Evan Shephard, Andreas Thomas Franz Wolf, Eric Jude Joffre
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Patent number: 5883184Abstract: A curable organopolysiloxane composition is disclosed, comprising (A) 100 parts by weight of an organopolysiloxane having at least two monovalent aliphatic unsaturated hydrocarbon groups bonded to the silicon atoms per molecule, (B) an organopolyhydrogensiloxane having at least three hydrogen atoms bonded to the silicon atoms per molecule in such an amount that the number of the hydrogen atoms bonded to the silicon atoms falls within a range of from 0.25 to 8 per monovalent aliphatic unsaturated hydrocarbon group in component (A), (C) a catalyst selected from the group consisting of platinum and platinum compounds in an amount of from 0.Type: GrantFiled: May 21, 1996Date of Patent: March 16, 1999Assignee: Toshiba Silicone Co., Ltd.Inventor: Hisayuki Nagaoka
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Patent number: 5880211Abstract: In an RTV organopolysiloxane composition comprising a hydroxy-terminated diorganopolysiloxane and an organic silicon compound having at least three hydrolyzable groups, there is blended calcium carbonate which has been treated with 1-2.5% by weight of an agent having a melting or softening point of at least 100.degree. C. or a saturated fatty acid having at least 21 carbon atoms. The composition is adhesive to even surface treated aluminum plates and maintain a firm bond under water immersion and at elevated temperatures.Type: GrantFiled: December 17, 1996Date of Patent: March 9, 1999Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Masatoshi Miyake, Keisuke Imai, Koji Yokoo, Masaharu Sato
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Patent number: 5866668Abstract: An object of the invention is to provide a heat curable composition having both of an excellent storage stability and low-temperature curability. The heat curable composition of this invention comprises (A) a polyisocyanate compound and an urethane prepolymer having a terminal active isocyanate group which is prepared by reacting a polyol component with an excess amount of a polyisocyanate compound, which are used each alone or in a combination threof; and (B) a fine particles-coated amine which is prepared by coating an active amino group on the surface of a solid amine having a melting point of .gtoreq.50.degree. C. and a mean particle size of .ltoreq.20 .mu.m with fine particles having a mean particle size of .ltoreq.2 .mu.m in a ratio of the solid amine/the fine particles of 1/0.001 to 0.5 by weight.Type: GrantFiled: September 27, 1996Date of Patent: February 2, 1999Assignee: Sunstar Giken Kabushiki KaishaInventors: Nobuhiko Maeda, Tatsuya Okuno, Yoshiya Hattori, Johshi Gotoh
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Patent number: 5863969Abstract: The present invention provides novel vinyl containing organopolysiloxane elastomers which possess excellent low compression set and heat aging characteristics and which can advantageously be formulated into liquid silicone elastomer moldable compositions.Type: GrantFiled: October 20, 1997Date of Patent: January 26, 1999Assignee: General Electric CompanyInventors: Brian J. Ward, Edward M. Jeram, Richard A. Striker
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Patent number: 5861460Abstract: A highly productive, continuous method for the production of room-temperature-curable organopolysiloxane compositions is obtained by continuously feeding 100 parts by weight of a diorganopolysiloxane with a viscosity at 25.degree. C. of 0.1 to 500 Pa.Type: GrantFiled: March 28, 1996Date of Patent: January 19, 1999Assignee: Dow Corning Toray Silicone Co., LTD.Inventors: Mitsuo Hamada, Tomoo Kinoshita, Hideyuki Mori, Junya Yokoi
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Patent number: 5851612Abstract: A container formed from a copolyester composition which comprises a copolyester containing 80 to 95 mol % of terephthalic acid and 20 to 5 mol % of 2,6-naphthalenedicarboxylic acid as acid components and ethylene glycol as a glycol component, wherein catalyst metals of a calcium compound, magnesium compound and cobalt compound are contained in the copolyester in such amounts that satisfy all the following expressions (1) to (4) based on the total of the whole acid component of the polymer:0<Ca.ltoreq.35(mmol %) (1)0<Mg.ltoreq.80(mmol %) (2)40.ltoreq.(Mg+Ca).ltoreq.90(mmol %) (3)0.ltoreq.Co.ltoreq.15(mmol %) (4).The above polyester container is excellent in gas barrier property, ultraviolet light screening property, hot water resistance, hue and transparency, is not whitened and has a small content of aldehyde.Type: GrantFiled: December 24, 1997Date of Patent: December 22, 1998Assignee: Teijin LimitedInventors: Masami Umeda, Kimihiko Sato
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Patent number: 5852108Abstract: A composite particulate material for resin reinforcement which comprises an inorganic particulate material (A) and an elastic polymer (B) having a glass transition temperature of -10.degree. C. or below and also having functional groups capable of forming chemical bonds with resins to be reinforced, said components (A) and (B) accounting for 50-99 wt % and 50-1 wt %, respectively, of their total amount. A process for producing said composite particulate material. A reinforced resin composition incorporated with said composite particulate material. The resin composition yields molded articles which are improved in mutually contradicting properties (that is, impact strength vs. stiffness and elongation at break vs. heat resistance) and which have mechanical properties with less anisotropy. It offers good characteristic properties which are hardly attained by conventional engineering plastic materials.Type: GrantFiled: February 7, 1996Date of Patent: December 22, 1998Assignee: Toray Industries, Inc.Inventors: Toru Yamanaka, Mitsunari Sotokawa, Shinobu Nakashima
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Patent number: 5840805Abstract: A highly storage-stable room-temperature-curable organopolysiloxane composition that cures to yield a product whose surface resists staining and that does not cause staining of the neighboring regions of the substrate in contact with said cured product. The organopolysiloxane composition is made from a polydiorganosiloxane, an imidazolinyl-functional organosiloxane, a filler, and a crosslinking compound which is a Si-bonded hydrolyzable group-containing organosilane or organosiloxane oligomer.Type: GrantFiled: October 25, 1995Date of Patent: November 24, 1998Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Hisataka Nakashima, Shigeki Sugiyama
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Patent number: 5837771Abstract: For improved flame retardant finishing and better processability of an epoxy anhydride reaction resin system, the present invention provides a reaction resin system supplemented with phosphinic and/or phosphonic acid anhydride as the hardener component. The phosphorus-containing anhydrides do not deteriorate the hardening characteristics. Molded members manufactured therefrom exhibit adequate flame retardant behavior even with slight proportions of phosphinic or phosphonic acid anhydride given a property profile that is otherwise unmodified.Type: GrantFiled: January 11, 1996Date of Patent: November 17, 1998Assignee: Lemens AktiengesellschaftInventors: Ernst Wipfelder, Winfried Plundrich
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Patent number: 5834536Abstract: The invention relates to a process for producing immobilized polysulphide silanes, characterized by the conversion of a halogenated alkyl silane (A), optionally in the presence of a further organic halogen compound (B), with a polysulphide (C) in the presence of water and an inorganic or organic carrier material, wherein the content of the carrier material in the (dried and water-insoluble) end product is 20 to 99.5 wt. %.The immobilized polysulphide silanes are used for producing rubber mixtures and vulcanisates, particularly for tires, which have a low rolling resistance and an enhanced thermal load capacity.Type: GrantFiled: August 7, 1996Date of Patent: November 10, 1998Assignee: Bayer AGInventor: Thomas Scholl
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Patent number: 5807924Abstract: This invention relates to two-component, solvent-thinnable coating media based on a polyisocyanate component and a component which reacts with isocyanate. The coating media contain one or more hydroxy-functional copolymers, one or more secondary polyamines containing ester groups, one or more aliphatic and/or cycloaliphatic polyisocyanates containing allophanate groups, extenders and/or pigments and optionally one or more organic solvents and customary lacquer additives. 60 to 75% by weight of aluminium hydroxide and calcium magnesium carbonate are contained in total, with respect to the total amount of extenders and/or pigments.Type: GrantFiled: November 4, 1996Date of Patent: September 15, 1998Assignee: Herberts GmbHInventors: Heinz Dietholf Becker, Gerhard Bremer, Werner Stephan
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Patent number: 5770640Abstract: Finishing agents comprise the combination of an alkoxysilane surface active agent, a silanol condensing catalyst, and a nonaqueous liquid or solid medium, or the combination of an alkoxysilane surface active agent, an acid catalyst and a liquid or solid medium. In the latter embodiment, it is preferred that at least one of the alkoxysilane surface active agent and the acid catalyst be microencapsuled. The finishing agent permits formation of chemically adsorbed protecting films. Such protecting films are used for substrates of such equipments as electronics products, electric domestic products, automobiles, industrial equipment, mirrors, lenses for glasses and the like. The protecting films have a durability and heat, weather and abrasion resistance, and also water and oil repellent properties.Type: GrantFiled: January 2, 1997Date of Patent: June 23, 1998Assignee: Matsushita Electric Industrial Co., Ltd.Inventor: Kazufumi Ogawa
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Patent number: 5756032Abstract: A biaxially extended polyester film comprising light calcium carbonate particles, spherical silica particles and .gamma.- or .delta.-alumina particles or a mixture thereof treated with a silane coupling agent prepared by the inventive process possesses excellent surface and physical properties.Type: GrantFiled: December 12, 1996Date of Patent: May 26, 1998Assignee: SKC LimitedInventors: Kwang-Hyung Lee, Seung-Soo Woo
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Patent number: 5741834Abstract: The present invention provides novel vinyl containing organopolysiloxane elastomers which possess excellent low compression set and heat aging characteristics and which can advantageously be formulated into liquid silicone elastomer moldable compositions.Type: GrantFiled: October 10, 1996Date of Patent: April 21, 1998Assignee: General Electric CompanyInventors: Brian John Ward, Edward Matthew Jeram, Richard Albert Striker
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Patent number: 5741882Abstract: A process to prepare a high molecular weight aliphatic polyester is disclosed, where a catalyst is portionwise added, and a radical scavenger is also added. The aliphatic polyester obtained has a number average molecular weight larger than 70,000.Type: GrantFiled: September 21, 1995Date of Patent: April 21, 1998Assignee: Tonen CorporationInventors: Takeaki Fujii, Kenji Kobayashi, Sadakatsu Suzuki, Hiroshi Ueno
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Patent number: 5733968Abstract: The invention relates to a multi-component dental cement which contains as a first component an ethylenically unsaturated polymerisable compound, as a second component calcium hydroxide, calcium oxide or a precursor thereof and also a polymerisation initiator, the constituents of which can be contained in one or more cement components, which is characterized in that the ethylenically unsaturated polymerisable compound has both at least one .beta.-dicarbonyl group and also at least one acrylic, alkacrylic or vinyl aromatic group. Also included are a process for the production of a multi-component dental cement and the use of the described polymerisable .beta.-dicarbonyl compounds in calcium hydroxide dental cements.Type: GrantFiled: November 6, 1996Date of Patent: March 31, 1998Assignee: Ivoclar AGInventors: Norbert Moszner, Ulrich Salz, Volker Rheinberger
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Patent number: 5717009Abstract: An adhesive composition which comprises:(A) 100 parts by weight of a polyorganosiloxane represented by the formula (I): ##STR1## (wherein R.sup.1 s may be the same or different from each other and each represent a monovalent hydrocarbon group or a halogen-substituted hydrocarbon group; and n is a positive integer);(B) 0.5 to 10 parts by weight of a tetraalkoxysilane represented by the following formula:R.sup.2.sub.a Si(OR.sup.3).sub.4-a (II)(wherein R.sup.2 represents an alkyl group having 1 to 3 carbon atoms, a phenyl group or a vinyl group; R.sup.3 represents an alkyl group having 1 to 4 carbon atoms or an alkoxy-substituted alkyl group having 3 to 6 carbon atoms; and a is 0 or 1),or a partially hydrolyzed condensate thereof; and(C) 0.1 to 15 parts by weight of a trialkoxysilane represented by the formula (III):R.sup.4 (R.sup.5).sub.b Si(OR.sup.6).sub.3-b (III)(wherein R.sup.4 represents a substituted or unsubstituted aminoalkyl group; R.sup.Type: GrantFiled: July 17, 1996Date of Patent: February 10, 1998Assignee: Toshiba Silicone Co., Ltd.Inventors: Shigeki Matsushita, Fumihiko Kobayashi
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Patent number: 5717010Abstract: The present invention provides novel vinyl containing organopolysiloxane elastomers which possess excellent low compression set and heat aging characteristics and which can advantageously be formulated into liquid silicone elastomer moldable compositions.Type: GrantFiled: August 28, 1996Date of Patent: February 10, 1998Assignee: General Electric CompanyInventors: Brian J. Ward, Edward M. Jeram, Richard A. Striker
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Patent number: 5708076Abstract: A room temperature-curable organopolysiloxane composition with excellent extrudability and self-extinguishing properties is made from a hydroxyl endblocked polydiorganosiloxane, aluminum hydroxide having an average particle size not exceeding 50 micrometers, colloidal calcium carbonate, platinum or a platinum compound, and a crosslinking silane or siloxane having at least three hydrolyzable groups.Type: GrantFiled: January 27, 1997Date of Patent: January 13, 1998Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Yuichi Tsuji, Miyoji Fukayama
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Patent number: 5708070Abstract: An aqueous silicone emulsion which crosslinks by a Michael addition reaction, yielding a cured composition upon removal of the water has been prepared. The aqueous silicone emulsion comprises the product formed by mixing an organosiloxane polymer containing at least two Michael acceptor groups per organosiloxane molecule, water, a surfactant and an effective amount of a crosslinker having sufficient reactive hydrogens of a Michael donor per crosslinker molecule. The invention also describes a method for making these silicone emulsions.Type: GrantFiled: December 20, 1995Date of Patent: January 13, 1998Assignee: Dow Corning CorporationInventors: Eric Jude Joffre, Donald Taylor Liles, David Logan Murray, Anthony Revis
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Patent number: 5703146Abstract: A curable composition includes (A) 100 parts by weight of an oxypropylene polymer having groups containing silicon atoms bonded to a hydroxy group and/or a hydrolyzable group and capable of crosslinking by forming a siloxane bond, a maximum Mw/Mn of 1.6, and an average molecular weight of at least 6,000, (B) from 100 to 200 parts by weight of calcium carbonate containing at least 30% by weight calcium carbonate of an average particle size of not larger than 0.5 .mu.m and surface-treated with a fatty acid, (C) from 30 to 100 parts by weight of a plasticizer containing at least 5% by weight phthalic acid ester plasticizer, (D) from 0.5 to 10 parts by weight of a compound represented by the formula R.sup.1 Si(OCH.sub.3).sub.3 and/or Si(OCH.sub.2 CH.sub.3).sub.4 (wherein R.sup.1 represents a monovalent organic group containing no amino groups), (E) from 0.5 to 10 parts by weight of a compound represented by following formula (1), and (F) from 0.Type: GrantFiled: May 21, 1996Date of Patent: December 30, 1997Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Hiroshi Iwakiri, Masayuki Fujita, Takashi Hasegawa
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Patent number: 5683616Abstract: This invention relates to a process for preparing ceramic-like materials with specific properties by binding an inorganic filler in the form of a dry composition with a grain size of up to 25 .mu.m containing in the volume ratio 1:0.-1.52 a waste phosphogypsum and magnetite or glass-forming oxides, with an unsaturated polyester resin in an amount of 46-220 volume parts per 100 volume parts of the filler. The use of magnetite makes it poisible to prepare materials with magnetic properties, while glass-foming oxides enable preparing materials effective to absorb an X-radiation of 45-55 keV and a hard radiation of 0.6-125 MeV. When an expanding agent is added to the raw composition according to this invention, an expanded material is obtained, having completely closed pores, particularly useful in the building industry.Type: GrantFiled: December 18, 1995Date of Patent: November 4, 1997Inventors: Marceli Cyrkiewicz, Erwin Herling, Jacek Kleszczewski