Mixed With Silicon-containing Reactant Or Polymer Derived Therefrom Patents (Class 525/464)
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Patent number: 5366805Abstract: In a polycarbonate resin/silicone rubber integrally molded article, a polycarbonate resin having an aliphatic unsaturated group, typically an isopropenyl group is integrally joined to an addition type silicone rubber containing a tackifier component at high bond strength. It is prepared by injection molding a modified polycarbonate resin into a preform, injection molding a silicone rubber composition over the preform, and curing the composition at a temperature below the softening point of the polycarbonate resin.Type: GrantFiled: December 9, 1993Date of Patent: November 22, 1994Assignee: Shin-Etsu Chemical Company, Ltd.Inventors: Hironao Fujiki, Shigeki Shudo, Akira Matsuda, Noriyoshi Ogawa, Toshiaki Takata
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Patent number: 5354796Abstract: A thermoplastic composition is provided comprising an acrylonitrile-butadiene-styrene graft copolymer, polycarbonate and an epoxy functional silicone. The compositions exhibit reduced gloss and enhanced low temperature impact strengths and are useful as molding resins.Type: GrantFiled: October 1, 1992Date of Patent: October 11, 1994Assignee: General Electric CompanyInventors: Oliver P. Creecy, Richard P. Eckberg, Edward J. Fewkes, Jr., Vicki H. Watkins
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Patent number: 5352747Abstract: To obtain light-diffusing polycarbonate resin compositions which show excellent light diffusing characteristics while maintaining the impact strength and other inherent properties of the matrix resin.Resin compositions in which certain light-diffusing fine particles are added and dispersed in 100 wt. parts polycarbonate resins.Type: GrantFiled: December 7, 1993Date of Patent: October 4, 1994Assignee: GE Plastics, Japan, Ltd.Inventors: Yoshio Ohtsuka, Tomohide Fujiguchi, Katsumi Oishi
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Patent number: 5344908Abstract: Polycarbonate oligomers having hydroxy end groups are produced by a melt reaction with bisphenol-A and a basic catalyst. The oligomers may then be reacted with chloro end-group siloxanes in the presence of a solvent and an acid acceptor to yield polycarbonate-polysiloxane block co-polymers. The melt reaction occurs at elevated temperature without the direct use of phosgene gas.Type: GrantFiled: May 4, 1993Date of Patent: September 6, 1994Assignee: General Electric CompanyInventor: Niles R. Rosenquist
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Patent number: 5322882Abstract: A polycarbonate-based resin composition excelling in not only impact resistance but also other physical properties comprises 6 to 90% by weight of a polycarbonate/polyorganosiloxane copolymer, 10 to 60% by weight cf glass fibers and 0 to 84% by weight of a polycarbonate resin. The amount of the polyorganosiloxane contained in the resin components is in a range of 0.5 to 40% by weight.Type: GrantFiled: January 15, 1993Date of Patent: June 21, 1994Assignee: Idemitsu Petrochemical Co., Ltd.Inventor: Masaya Okamoto
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Patent number: 5280050Abstract: A thermoplastic polycarbonate molding composition which is rendered resistant to deterioration induced by exposure to gamma radiation is disclosed. The composition is imparted an improved degree of color stability upon the incorporation of a minor amount of a poly(alkylene oxide) oligomer and a halogenated aromatic acid derivative therewith. In addition, the composition is characterized by its low initial color and the small change in its yellowness index after a waiting period of several weeks.Type: GrantFiled: May 19, 1992Date of Patent: January 18, 1994Assignee: Miles Inc.Inventors: Douglas G. Powell, Sivaram Kirshnan
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Patent number: 5273685Abstract: A thermoplastic resin composition comprising (a) 100 parts by weight of thermoplastic copolycarbonate comprising 0.1 to 50% by weight of structural unit of the following general formula (1) and 99.9 to 50% by weight of structural unit of the following general formula (2): ##STR1## and (b) 0.1 to 30 parts by weight of electroconductive carbon black can produce a molding product having good mechanical properties and surface smoothness with good moldability.Type: GrantFiled: February 21, 1992Date of Patent: December 28, 1993Assignee: Mitsubishi Gas Chemical Co., Inc.Inventors: Toshiaki Takata, Tadami Kinugawa, Hideo Otaki
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Patent number: 5250621Abstract: Interpolymers of aromatic polyesters and cross-linked (or partially cross-linked) rubbers and a process for their production in which a mixture of a cross-linked rubber in latex form containing reactive groups and an aqueous solution of an alkali metal or alkaline earth metal diphenolate is reacted with a solution of a dicarboxylic acid halide and/or a carbonyl halide in a water-immiscible solvent so that an aromatic polyester forms at the water/organic solvent phase boundary, which polyester goes over into the organic phase and the rubber at the same time also goes into the organic phase. The interpolymer of rubber and organic polyester thus formed is suitable for the production of moulded articles of all kinds by the methods of thermoplastic shaping such as extrusion and injection moulding.Type: GrantFiled: June 17, 1991Date of Patent: October 5, 1993Assignee: Bayer AktiengesellschaftInventors: Holger Lutjens, Uwe Westeppe, Leo Morbitzer, Karl-Erwin Piejko, Christian Lindner
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Patent number: 5250615Abstract: A polyorganosiloxane series thermoplastic resin comprising a graft copolymer obtained from a vinyl monomer and a modified polyorganosiloxane, and a thermoplastic resin composition containing the same. The resin and the composition thereof have excellent slidability, abrasion resistance, weather resistance, cold resistance and impact resistance, and can be applied to new fields such as sliding parts, parts for cold district, outdoor parts, etc.Type: GrantFiled: June 10, 1992Date of Patent: October 5, 1993Assignees: Japan Synthetic Rubber Co., Ltd., Toshiba Silicone Co., Ltd.Inventors: Yuji Yamamoto, Takashi Kurata, Kazuyoshi Nakazawa, Yusuke Tsuda, Junichiro Watanabe, Makoto Matsumoto, Akitsugu Kurita, Yuichi Funahashi
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Patent number: 5234995Abstract: New silanes containing at least two oxazolidinic moieties can be defined by means of the general formula: ##STR1## wherein X.sub.1, X.sub.2, X.sub.3 and X.sub.4 have the meaning as reported in the specification, and each one of A.sub.1, A.sub.2 and A.sub.3 represents from 0 to a plurality of siloxane radicals--SiO--and are better defined in the text of the specification.These compounds are useful as crosslinking agents for moisture-hardening systems based on polyisocyanates, of acrylate polymers and of polyepoxides in compositions for coatings, sealants and adhesive agents.Type: GrantFiled: October 31, 1991Date of Patent: August 10, 1993Assignee: Enichem Synthesis S.p.A.Inventor: Alberto Greco
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Patent number: 5194524Abstract: A process is provided for making poly(carbonate-siloxanes). The process involves melt mixing polycarbonate resin and an amount of a secondary amine functional siloxane to produce a polycarbonate-siloxane copolymer. The process is useful for producing a copolymer resin that can be used as resin for making molded articles.Type: GrantFiled: October 5, 1990Date of Patent: March 16, 1993Assignee: General Electric CompanyInventor: Edward N. Peters
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Patent number: 5191036Abstract: A thermoplastic resin composition comprising: (A) at least one resin selected from the group consisting of a polyester resin and a polycarbonate resin, and (B) an aromatic polyester-polyorganosiloxane block copolymer, a weight ratio of (A) to (B) (=A/B) being 10/90 to 90/10. With the addition of the copolymer (B), impact strength of the composition can be improved without impairing the properties of the resin (A).Type: GrantFiled: May 31, 1991Date of Patent: March 2, 1993Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Naoki Yamamoto, Hiroshi Mori, Akira Nakata, Misayo Suehiro
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High impact, flame retardant, transparent blends of aromatic polycarbonate and poly(aryloxysiloxane)
Patent number: 5187243Abstract: Broad range blends of aromatic polycarbonate and poly(aryloxysiloxane), such as poly(silyloxytetraalkylbiphenyleneoxide), have been found to be transparent. These blends also have been found to be flame retardant and possess excellent mechanical properties, such as high Notched Izod Impact.Type: GrantFiled: January 28, 1991Date of Patent: February 16, 1993Assignee: General Electric CompanyInventors: Therese C. Jordan, Jimmy L. Webb -
Patent number: 5179142Abstract: A polylactone-modified organopolysiloxane compound, wherein a polylactone-containing group represented by the formula (I) is bound to a silicon atom located at at least either of the terminal positions and/or intermediate positions to impart excellent properties as a synthetic resin modifier (when Y in (I) is an acetyl group or a hydrogen atom) or as a film former (when Y in (I) is a hydrogen atom): ##STR1## wherein Z represents a trivalent hydrocarbon residue which may contain oxygen, sulfur or/and nitrogen atom(s); X represents a lactone group of the formula, ##STR2## (wherein R represents a hydrogen atom or an alkyl group containing from 1 to 12 carbon atoms; a represents an integer from 4 to 6), k and L each represents an integer of 1 or more; and Y represents a hydrogen atom or an acetyl group.Type: GrantFiled: June 4, 1990Date of Patent: January 12, 1993Assignee: Shin-Etsu Chemical Company, LimitedInventors: Ichiro Ono, Hiroshi Yoshioka
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Patent number: 5164454Abstract: An ethylene graft copolymer is disclosed, which is obtained by radical polymerizing a monomer composition comprising (A) from 50 to 99.95% by weight of ethylene, (B) from 0.05 to 50% by weight of a macromonomer having a number average molecular weight of from 2,000 to 20,000 and having a (meth)acryloyl group only at one terminal of the molecular chain thereof, and (C) 0 to 49.95% by weight of other radical polymerizable monomer(s). The ethylene graft copolymer is a modifier for improving impact resistance of engineering plastics or a compatibilizer for engineering plastics to provide a molding resin composition excellent in impact resistance and oil resistance. The ethylene graft copolymer is also useful as a hot-melt adhesive or a pressure-sensitive adhesive.Type: GrantFiled: July 9, 1990Date of Patent: November 17, 1992Assignees: Toagosei Chemical Industry Co., Ltd., Nippon Petrochemicals Co., Ltd.Inventors: Katsufumi Suga, Yoshihiro Yoshinaga, Hiroaki Yoshitomi, Takashi Tsuda, Shiro Kojima, Kishiro Azuma
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Patent number: 5147947Abstract: A polyorganosiloxane series thermoplastic resin comprising a graft copolymer obtained from a vinyl monomer and a modified polyorganosiloxane, and a thermoplastic resin composition containing the same. The resin and the composition thereof have excellent slidability, abrasion resistance, weather resistance, cold resistance and impact resistance, and can be applied to new fields such as sliding parts, parts for cold district, outdoor parts, etc.Type: GrantFiled: October 31, 1989Date of Patent: September 15, 1992Assignees: Japan Synthetic Rubber Co., Ltd., Toshiba Silicone Co., Ltd.Inventors: Yuji Yamamoto, Takashi Kurata, Kazuyoshi Nakazawa, Yusuke Tsuda, Junichiro Watanabe, Makoto Matsumoto, Akitsugu Kurita, Yuichi Funahashi
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Patent number: 5145911Abstract: A thermoplastic molding composition comprising (i) an aromatic polycarbonate having high thermal dimensional stability and based on a substituted dihydroxydiphenylcycloalkane, (ii) other aromatic polycarbonate resin and (iii) graft, particle-type diene rubbers is disclosed. The composition is characterized by its good Izod impact strength. A process for preparing the molding composition and their use for manufacturing molded bodies are also disclosed.Type: GrantFiled: June 6, 1990Date of Patent: September 8, 1992Assignee: Bayer AktiengesellschaftInventors: Thomas Eckel, Dieter Freitag, Uwe Westeppe, Dieter Wittmann
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Patent number: 5132349Abstract: A preparation process of a phenol-based resin composition by conducting a crosslinking reaction of a specific silicone compound in the phenol-based resin in the presence of a specific emulsifier, crosslinking agent and catalyst and by the addition of water to disperse resulting silicone rubber as fine particles in the phenol-based resin.The phenol-based resin of the invention has no time-dependent variation in molding processability and molded products are stable and has no time-dependent change in impact resistance, flexural strength and thermal shock resistance (heat crack resistance), and hence the phenol-based resin composition is used for various molding materials and friction materials which require excellent mechanical strength, crack resistance, thermal shock resistance, stress relaxation resistance or abrasion resistance.Type: GrantFiled: May 7, 1991Date of Patent: July 21, 1992Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Shigeru Iimuro, Masahiko Asano, Toshimiki Shimizu
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Patent number: 5120888Abstract: A surface-segregatable, melt-extrudable thermoplastic composition suitable for processing by melt extrusion to form a fiber or film having a differential, increasing concentration of an additive from the center of the fiber or film to the surface thereof, which differential, increasing concentration imparts to the surface of the fiber or film at least one desired characteristic which otherwise would not be present, which composition includes at least one thermoplastic polymer and at least one defined additive. During formation of the fiber or film, the additive rapidly segregates in a controllable manner toward the newly-formed surface of the fiber or film, thereby resulting in a controllable differential concentration of the polymeric material, which concentration increases with increasing distance from the center of the fiber or film to its surface. The weight ratio of the polymer to the additive is in the range of from about 1 to about 1,000.Type: GrantFiled: June 25, 1991Date of Patent: June 9, 1992Assignee: Kimberly-Clark CorporationInventors: Ronald S. Nohr, J. Gavin MacDonald
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Patent number: 5109076Abstract: Thermoplastic polydiorganosiloxane/polycarbonate block copolymers based on dihydroxydiphenylcycloalkanes corresponding to the following general formula (I): ##STR1## wherein R.sup.1 and R.sup.2 independently represent hydrogen, halogen, preferably chlorine or bromine, C.sub.1 -C.sub.8 alkyl, C.sub.5 or C.sub.6 cycloalkyl, C.sub.5 -C.sub.10 aryl or C.sub.7 -C.sub.12 aralkyl, preferably phenyl-C.sub.1 -C.sub.4 -alkyl, in particular benzyl: m represents an integer of from 4 to 7, preferably 4 or 5;R.sup.3 and R.sup.4 may be chosen individually for each X and independently represent hydrogen or C.sub.1 -C.sub.12 alkyl; andX represents carbon; with the proviso that R.sup.3 and R.sup.4 both represent alkyl on at least one atom X,having an average molecular weight M.sub.w (weight average) of 10 000 to 300 000, a content of aromatic polycarbonate of 21 to 99.5% by weight and a content of polyorganosiloxane of 79 to 0.5% by weight.Type: GrantFiled: December 13, 1989Date of Patent: April 28, 1992Assignee: Bayer AktiengesellschaftInventors: Dieter Freitag, Uwe Westeppe, Alfred Jung, Peter Horlacher, Gunther Weymans, Ulrich Grigo, Leo Morbitzer, Karsten-Josef Idel
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Patent number: 5104945Abstract: Thermoplastic molding compositions comprising mixtures ofa) 1-99 wt. % of a specific polycarbonate based on dihydroxydiphenylcycloalkanes,b) 1-99 wt. % of other polycarbonate, in particular those based on bisphenol A, andc) 1-95 wt. % of a silicone rubber, in particular silicone graft rubbers,having improved thermal resistance and being suitable for the preparation of shaped articles, and a process for their preparation are being disclosed.Type: GrantFiled: April 17, 1990Date of Patent: April 14, 1992Assignee: Bayer AktiengesellschaftInventors: Thomas Eckel, Dieter Wittmann, Dieter Freitag, Uwe Westeppe, Karl-Heinz Ott
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Patent number: 5100960Abstract: The invention relates to a thermoplastic molding composition comprising(A) from 10 to 98 parts by weight of a polydiorganosiloxane-polycarbonate block copolymer having a weight average molecular weight of from 10,000 to 200,000 and containing from 75 to 97.5 wt. % of aromatic carbonate structural units and from 25 to 2.5 wt. % of polydiorganosiloxane structural units;(B) from 2 to 90 parts by weight of a thermoplastic, aromatic polycarbonate having a weight average molecular weight of at least 10,000, andcontaining bifunctional carbonate structural units corresponding to ##STR1## wherein R.sup.1 and R.sup.2 independently represent hydrogen, halogen, C.sub.1 -C.sub.8 alkyl, C.sub.5 -C.sub.6 cycloalkyl, C.sub.6 -C.sub.10 aryl or C.sub.7 -C.sub.12 aralkyl;m represents an integer of from 4 to 7,R.sup.3 and R.sup.4, which may be selected individually for each X, independently represent hydrogen or C.sub.1 -C.sub.6 alkyl; andx represents carbon,with the proviso that, on at least one atom X, R.sup.3 and R.sup.Type: GrantFiled: March 12, 1990Date of Patent: March 31, 1992Assignee: Bayer AktiengesellschaftInventors: Ulrich Grigo, Peter Horlacher, Dieter Freitag, Karsten-Josef Idel, Uwe Westeppe, Wolfgang Beer, Werner Nouvertne
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Patent number: 5087662Abstract: Thermoplastic molding compositions are provided which comprise polycarbonate resins, polyester resins and polyphenylene ether resins or various combinations thereof modified with a multi-stage polyorganosiloxane/polyvinyl-based graft (meth)acrylate polymer. When the resultant compositions are molded, impact strength, ductility, tendency to agglomerate, rubber dispersion, blend morphology, weld line strength, and thermal stability are improved with no delamination or surface mottling.Type: GrantFiled: November 14, 1988Date of Patent: February 11, 1992Assignee: General Electric CompanyInventors: Muhanad A. Alsmarraie, Stanley Y. Hobbs, I-Chung W. Wang, Vicki H. Watkins
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Patent number: 5079300Abstract: The present invention provides curable gel compositions and also cured gel compositions which possess unexpectedly superior combinations of physical properties and aging resistance. These compositions are particularly useful for environmentally protecting substrates especially electrical conductors, connectors and splices and for sealing around jacketed cables, for example, where they enter splice cases.Type: GrantFiled: March 5, 1990Date of Patent: January 7, 1992Assignee: Raychem CorporationInventors: Robert S. Dubrow, Subbu S. Venkatraman, Albert J. Highe, Frank W. Mercer, Christian A. Debbaut
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Patent number: 5079293Abstract: Polyphasic resin blends and particularly polycarbonate/polyester blends, are prepared with modifiers comprising combinations of polyorganosiloxane/polyvinyl-based graft copolymer(s), polyorganosiloxane-based graft copolymer(s) and/or diene rubber-based graft copolymer(s), imparting a wide range of physical properties to the blends.Type: GrantFiled: May 24, 1989Date of Patent: January 7, 1992Assignee: General Electric CompanyInventors: Muhanad A. Alsamarraie, Stanley Y. Hobbs, I-Chung W. Wang, James L. DeRudder, Vicki H. Watkins, Marinus E. J. Dekkers
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Patent number: 5045595Abstract: A multi-stage polyorganosiloxane/polyvinyl-based graft polymer is provided by the co-homopolymerization of a silicone polymer and a polyvinyl polymer (e.g. polystyrene) and the subsequent graft polymerization of one or more stages of additional vinyl-type polymers. When the isolated multi-stage graft polymers are combined with thermoplastic resins and are molded, impact strength, weld line strength and thermal stability are markedly improved with no tendency to delaminate.Type: GrantFiled: November 14, 1988Date of Patent: September 3, 1991Assignee: General Electric CompanyInventor: I-Chung W. Wang
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Patent number: 5037887Abstract: A composition comprising:(i) a crosslinkable thermoplastic resin;(ii) an organic peroxide crosslinking agent; and(iii) a linear polyorganosiloxane having the following recurring unit: ##STR1## wherein R is a saturated aliphatic or aromatic group and each R can be alike or different;a is about 5 to about 100;b is about 1 to about 1000; andthe polyorganosiloxane is terminated at the [CH.sub.2 ].sub.a end with --CH.dbd.CH.sub.2 or hydrogen and at the ##STR2## end with--[CH.sub.2 ].sub.a --CH.dbd.CH.sub.2 or hydrogen provided that at least one --CH.dbd.CH.sub.2 is present.Type: GrantFiled: July 28, 1989Date of Patent: August 6, 1991Assignee: Nippon Unicar Company LimitedInventors: Akitaka Senuma, Toshiyuki Nagai, Kiroku Tsukada, Akio Hayashi, Isao Noda
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Patent number: 5034458Abstract: Aromatic polycarbonates having weight average molecular weight M.sub.w of at least 10,000 which contain bifunctional carbonate structural units corresponding to general formula (I): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 independently represent hydrogen, C.sub.1 -C.sub.12 hdyrocarbon or halogen radicals; andR.sup.5, R.sup.6, R.sup.7, R.sup.8 and R.sup.9 independently represent hydrogen or C.sub.1 -C.sub.12 hydrocarbon radicals, one or R.sup.5 and R.sup.9 representing hydrogen and the other C.sub.1 -C.sub.12 hydrocarbon radical;in amounts of from 100 to 1 mole % based on the total amount of difunctional carbonate structural units in the polycarbonate were found to be useful for thermoplast processing of compositions which are characterized by their improved toughness and high heat deflection temperature.Type: GrantFiled: August 9, 1990Date of Patent: July 23, 1991Assignee: Bayer AktiengesellschaftInventors: Volker Serini, Dieter Freitag, Karsten-Josef Idel, Ulrich Grigo
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Patent number: 5034457Abstract: Thermoplastic blends ofA) 1 to 99% by weight of at least one thermoplastic aromatic polycarbonate which contains difunctional carbonate structural units of the formula (I) ##STR1## in which R.sup.1, R.sup.2, R.sup.3 and R.sup.4 independently of one another are hydrogen, a C.sub.1 -C.sub.12 -hydrocarbon radical or halogen and R.sup.5, R.sup.6 and R.sup.7 independently of one another are H or a hydrocarbon radical, with the proviso that at least one of the radicals R.sup.5, R.sup.6 and R.sup.7 is a hydrocarbon radical, that when only one of the radicals R.sup.5, R.sup.6 or R.sup.7 is present as a hydrocarbon radical this is a C.sub.3 -C.sub.12 -hydrocarbon radical with the exception of C.sub.3 -C.sub.12 -n-alkyl, and that when two or three radicals R.sup.5, R.sup.6 and R.sup.7 are present as hydrocarbon radicals these are any C.sub.1 -C.sub.Type: GrantFiled: March 6, 1990Date of Patent: July 23, 1991Assignee: Bayer AktiengesellschaftInventors: Volker Serini, Dieter Freitag, Karsten Idel, Ulrich Grigo
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Patent number: 5032661Abstract: Polyester-carbonate/polysiloxane block copolymers containing the following recurring structural units: ##STR1## wherein the structural units (1) comprise at least 75 wt.% of the sum of the structural units (1) and (2), exhibit better low temperature tough fracture properties than the known polyester-carbonate/polysiloxane block copolymers containing comparable recurring structural units on comparison of polyester-carbonate/polysiloxane block copolymers of the same heat resistance.Type: GrantFiled: October 30, 1989Date of Patent: July 16, 1991Assignee: Bayer AktiengesellschaftInventors: Volker Serini, Werner Nouvertne, Ulrich Grigo, Winfried Paul, Dieter Freitag
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Patent number: 5026791Abstract: A composition comprising an aromatic carbonate polymer wherein in the backbone of said polymer there is a siloxane unit of the structure below ##STR1## wherein n is an integer of one to about 100, R and R' are each selected from the group consisting of alkyl of one to twelve carbon atoms, inclusive, cycloalkyl of four to eight carbon atoms, inclusive, aryl or six to twenty carbon atoms, inclusive, aryl substituted alkyl of seven to twenty two carbon atoms, inclusive, and A ##STR2## wherein p is an integer of zero to about 4, R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5, are the same or different and are selected from hydrogen, alkyl of one to six carbon atoms, inclusive, and with the proviso that there is sufficient A present that the flame retardance of the polymer is enhanced compared to the polymer without the said siloxane unit.Type: GrantFiled: September 14, 1989Date of Patent: June 25, 1991Assignee: General Electric CompanyInventors: Christopher M. Hawkins, Robert R. Gallucci, John S. Razzano
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Patent number: 5025066Abstract: Polycarbonate and polyester blends are prepared with a combination of modifiers comprising a multi-stage polyorganosiloxane-based graft polymer composition and a diene rubber-based graft polymer composition imparting a wide range of excellent physical properties on the PC and PE blends.Type: GrantFiled: November 14, 1988Date of Patent: June 18, 1991Assignee: General Electric CompanyInventors: James L. DeRudder, I-Chung W. Wang
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Patent number: 5010148Abstract: Flame retardant compression moldable aromatic thermoplastic polycarbonate compositions are provided capable of satisfying the UL-94 V-O requirements and substantially lowering the heat and smoke emitted during burning. The aromatic thermoplastic polycarbonates utilize an aromatic polycarbonate resin in combination with an effective amount of a silicate resin having condensed triorganosiloxy units such as trimethylsiloxy units and diorganosiloxy units such as methylvinylsiloxy units.Type: GrantFiled: August 28, 1989Date of Patent: April 23, 1991Assignee: General Electric CompanyInventor: Larry N. Lewis
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Patent number: 5006581Abstract: A synthetic resin composition, having a high toughness and a wear resistance, comprises a synthetic resin with solubility parameter .delta.9.5 cal1/2 cm.sup.31 3/2 or higher and a modifier with solubility parameter .delta.8.5 cal.sup.1/2 cm.sup.-3/2 or lower and dispersed therein, characterized in that a silicon containing copolyester, being a block copolymer consisting of 1.about.90% by weight of siloxane segment represented by the undermentioned general formula (A) and 99.about.1% by weight of polyester segment represented by the undermentioned general formula (B), the degree of polymerization of siloxane segment being 1.about.2,000, and that of polyester segment 1.about.1,000, is added to be mixed therewith as a dispersibility improver: ##STR1## (In this formula, m denotes a number of 1.about.2,000.) ##STR2## (In this formula, R.sub.1 designates one or two or more members selected from among aromatic divalent radicals having 6.about.12 carbon atoms or aliphatic divalent radicals having 4.about.Type: GrantFiled: December 11, 1987Date of Patent: April 9, 1991Assignee: Polyplastics Co., Ltd.Inventors: Toshio Nakane, Kenji Hijikata, Yukihiko Kageyama
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Patent number: 4994532Abstract: Carboxylic acid functionalized polydimethylsiloxane fluids react with polycarbonate in the melt to form polydimethylsiloxane/polycarbonate block copolymers. The resultant copolymers are transparent and show improved flow and thick section impact relative to the polycarbonate.Type: GrantFiled: June 16, 1989Date of Patent: February 19, 1991Assignee: General Electric CompanyInventors: Christopher M. Hawkins, Robert R. Gallucci
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Patent number: 4994510Abstract: Poly(carbonate-siloxane) copolymers having reduced tendencies to burn are provided by the addition of an aromatic sulfone sulfonate thereto. These materials find utility in electrical applications.Type: GrantFiled: April 5, 1990Date of Patent: February 19, 1991Assignee: General Electric CompanyInventors: Raymond Z. Naar, Edward N. Peters
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Patent number: 4990556Abstract: This invention provides cured silicone rubber or gel particles exhibiting an average size of from 0.1 to 20,000 micrometers and containing from 0.5 to 70 weight percent, based on the weight of the particle, of entrapped mineral oil. When the particles are incorporated into a liquid or solid matrix material the oil is released from the particles into the matrix at a controlled rate and serves as a lubricating agent.Type: GrantFiled: April 17, 1990Date of Patent: February 5, 1991Assignee: Dow Corning Toray Silicone Ltd.Inventors: Koji Shimizu, Mitsuo Hamada
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Patent number: 4959404Abstract: A thermoplastic resin composition comprises a resin dispersion which includes a thermoplastic resin component having a solubility parameter .delta. of at least 9.5 cal.sup.1/2 cm.sup.-3/2, a modifier component having a solubility parameter .delta. of not higher than 8.5 cal.sup.1/2 cm.sup.-3/2, and a dispersibility improver comprising a silicon-containing polyacetal copolymer having (i) a siloxane segment derived from 0.01 to 30 wt. % of a terminal-reactive silicone oil of the following general formula I: ##STR1## wherein R.sub.1 represents an alkyl or phenyl group, R.sub.2 represents a divalent organic group, X represents a group selected from the group consisting of --NH.sub.2, --OH, ##STR2## --R.sub.4 OH, --R.sub.5 COOH, --R.sub.6 COOR.sub.7, --R.sub.8 and --OR.sub.9, R.sub.3 represents a divalent organic group, R.sub.4 to R.sub.6 each represent an alkylene group having 1 to 10 carbon atoms, R.sub.7 to R.sub.Type: GrantFiled: November 3, 1988Date of Patent: September 25, 1990Assignee: Polyplastics Co., Ltd.Inventors: Toshio Nakane, Yukihiko Kageyama, Kenji Hijikata
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Patent number: 4925890Abstract: A process for enhancing the fabrication of thermoplastic polymers entailing the addition of from 0.01 to 1 part, per hundred parts of thermoplastic polymer, of a processing aid, said processing aid comprising a processing additive, such as a silicon or a polyol, and a processing adjuvant, such as a phosphate.Type: GrantFiled: May 24, 1989Date of Patent: May 15, 1990Assignee: Union Carbide Chemicals and Plastics Company Inc.Inventors: Pak S. Leung, Errol D. Goddard, Fred H. Ancker
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Patent number: 4923914Abstract: A surface-segregatable, melt-extrudable thermoplastic composition suitable for processing by melt extrusion to form a fiber or film having a differential, increasing concentration of an additive from the center of the fiber or film to the surface thereof, which differential, increasing concentration imparts to the surface of the fiber or film at least one desired characteristic which otherwise would not be present, which composition includes at least one thermoplastic polymer and at least one defined additive. During formation of the fiber or film, the additive rapidly segregates in a controllable manner toward the newly-formed surface of the fiber or film, thereby resulting in a controllable differential concentration of the polymeric material, which concentration increases with increasing distance from the center of the fiber or film to its surface. The weight ratio of the polymer to the additive is in the range of from about 1 to about 1,000.Type: GrantFiled: April 14, 1988Date of Patent: May 8, 1990Assignee: Kimberly-Clark CorporationInventors: Ronald S. Nohr, J. Gavin MacDonald
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Patent number: 4923933Abstract: Disclosed are blends of (a) an aromatic brominated polycarbonate; and (b) a polyphthalatecarbonate. Preferably, the blends also contain an amount of a silicone-polyimide. The blends exhibit good flame resistance and low smoke generation.Type: GrantFiled: January 6, 1989Date of Patent: May 8, 1990Assignee: General Electric CompanyInventor: Herbert L. Curry
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Patent number: 4920183Abstract: A method for making silicone-poly(arylcarbonate) block copolymers is provided by intercondensing a hydroxyl-terminated polycarbonate oligomer with a halo-terminated polydiorganosiloxane in the presence of an acid acceptor.Type: GrantFiled: February 8, 1989Date of Patent: April 24, 1990Assignee: General Electric CompanyInventors: Thomas L. Evans, John C. Carpenter
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Patent number: 4916194Abstract: Flame retardant aromatic polycarbonate compositions are provided resulting from the use of certain poly(arylene silicon) materials in combination with aromatic polycarbonates. Included among the poly(arylene silicon) materials are aromatic polyester silioxanes, aromatic polyimide siloxanes and aromatic polysilphenylenes.Type: GrantFiled: March 6, 1989Date of Patent: April 10, 1990Assignee: General Electric CompanyInventors: Peter P. Policastro, Pamela K. Hernandez, Gary C. Davis, Jonathan D. Rich
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Patent number: 4912165Abstract: The present invention relates to mixtures of polycarbonates and polyisobutylenes, polydiorganosiloxane-polycarbonate block cocondensates being employed as the polycarbonates and polyisobutylene homopolymers or polyisobutylene-isoprene copolymers as the polyisobutylenes. If appropriate, the moulding compositions can also contain ethylene homo- or copolymers.Type: GrantFiled: July 18, 1988Date of Patent: March 27, 1990Assignee: Bayer AktiengesellschaftInventors: Paul Winfried, Ulrich Grigo, Werner Nouvertne, Peter R. Muller
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Patent number: 4877831Abstract: A polycarbonate resin composition excellent in chemical resistance, weather resistance, heat resistance, and low-temperature impact resistance, which comprises,either a polycarbonate resin (A) or a mixture (A') of the polycarbonate resin and a saturated polyester and/or a polyester elastomer andeither a siloxane based graft copolymer (B) obtained by graft polymerization of 95 to 10% by weight of at least one vinyl monomer onto 5 to 90% by weight of a polyorganosiloxane rubber which exhibits a degree of swelling of 3 to 30 as measured to toluene at 25.degree. C., contains constitutional units derived from a graft-linking agent, and has an average particle size of 0.08 to 0.8 .mu.m or a mixture (B) of the siloxane-based graft copolymer and a vinyl polymer,wherein the component (B) is blended so that the content of the polyorganosiloxane rubber may be from 0.5 to 60% by weight based on the whole resin composition.Type: GrantFiled: June 16, 1987Date of Patent: October 31, 1989Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Masafumi Hongo, Hideyuki Shigemitsu, Naoki Yamamoto, Akira Yanagase
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Patent number: 4876318Abstract: Compounds of the formula ##STR1## where R is alkyl, R' is independently selected from alkyl and aryl, and n ranges from 1 to 8 are useful as coupling agents in filled polymer compositions, e.g., in filled, polar polymers such as polybutylene terephthalate.Type: GrantFiled: July 19, 1988Date of Patent: October 24, 1989Assignee: Texas Alkyls, Inc.Inventors: Dennis B. Malpass, Kelly B. Triplett, Andrzej M. Piotrowski
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Patent number: 4857593Abstract: A process for enhancing the fabrication of thermoplastic polymers entailing the addition of from 0.01 to 1 part, per hundred parts of thermoplastic polymer, of a processing aid, said processing aid comprising a processing additive, such as a silicone or a polyol, and a processing adjuvant, such as a phosphate.Type: GrantFiled: March 8, 1988Date of Patent: August 15, 1989Assignee: Union Carbide CorporationInventors: Pak S. Leung, Errol D. Goddard, Fred H. Ancker
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Patent number: 4806593Abstract: Particularly high-grade blends of thermoplastic polycarbonates, graft copolymers and, optionally, further thermoplastic resins, useful as moulding materials with good low-temperature impact strength and resistance to ageing and light, which yield mouldings with superior surfaces, are obtained from graft bases which are silicone rubbers containing sulphur in addition to groups containing carbon double bonds.Type: GrantFiled: September 16, 1987Date of Patent: February 21, 1989Assignee: Bayer AktiengesellschaftInventors: Hans-Jurgen Kress, Christian Lindner, Wolfgang Grape, Horst Peters, Jochen Schoeps, Dieter Wittmann
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Patent number: 4792587Abstract: A resin composition of the invention, exhibiting the anisotropism when melted, comprises (1) a resin having rigid structure and exhibiting the anisotropism when melted and (2) a resin having a rigid structure portion and a soft structure portion, both resins having been uniformly mixed with each other.Type: GrantFiled: March 16, 1987Date of Patent: December 20, 1988Assignee: Polyplastics Co., Ltd.Inventors: Toshio Kanoe, Tsuneyoshi Okada, Kenji Hijikata
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Patent number: RE33070Abstract: A melt processable pseudointerpenetrating network of silicones in thermoplastic matrices and a method of producing same is provided by vulcanizing the silicones within the matrices. In a preferred embodiment a two part silicone comprising silicon hydride groups and silicon vinyl-containing groups are reacted in the presence of a platinum complex. Depending on certain parameters chain-extended (thermoplastic) or cross-linked (thermosetting) compositions are produced.Type: GrantFiled: February 18, 1987Date of Patent: September 26, 1989Assignee: Petrarch Systems Inc.Inventor: Barry C. Arkles