Patents Examined by Veronica P. Hoke
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Patent number: 6372831Abstract: The present invention is an flame resistant resin composition comprising: A) from about 50 to about 90 parts by weight of a rubber modified polymer derived from a vinyl aromatic monomer, B) from about 1 to about 8 parts by weight of an impact modifier, C) from about 0.5 to about 5 parts by weight of a polyolefin having a density of greater than 0.940 g/cm3 and a melt flow rate of less than 4 as measured according to ASTM D1238 at 190° C. using a 2.16 kg weight, D) a sufficient amount of a halogen-containing flame retardant to provide the composition with 7 to 14 parts by weight halogen, and E) from about 2 to about 6 parts by weight of an inorganic flame retardant synergist.Type: GrantFiled: June 6, 1996Date of Patent: April 16, 2002Assignee: The Dow Chemical CompanyInventors: Kevin D. Sikkema, Dawn M. Orbeck, Robert G. Nelb, II
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Patent number: 6372834Abstract: Spandex-type polyurethanes are protected against mechanical diagradation and yellowing which is produced by nitrogen oxide, chlorine or UV light, by incorporation of poly (N,N-diethyl-2-aminoethyl methacrylate) and either zinc oxide or an admixture of huntite and hydromagnesite.Type: GrantFiled: June 4, 2001Date of Patent: April 16, 2002Assignee: DuPont Toray-Co. Ltd.Inventor: Yuji Uemura
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Patent number: 6369148Abstract: Oxygen-scavenging compositions comprising an oxidizable metal component, an electrolyte component and a solid, non-electrolytic, acidifying component. When blended with soft, flexible polymeric resins, these compositions exhibit good oxygen-scavenging performance with improved oxidation efficiency relative to compositions containing an oxidizable metal component, an electrolyte, and an acidifying component combined with a more rigid thermoplastic resins. Selection of a thermally stable non-electrolytic, acidifying component is important when melt compounding the compositions into polymeric resins and particularly for extrusion coating applications. The compositions can be used directly as an oxygen absorbent resin melt-fabricated into a wide variety of oxygen-scavenging packaging articles or as concentrates in combination with other thermoplastic resins.Type: GrantFiled: March 18, 1998Date of Patent: April 9, 2002Assignee: Ciba Specialty Chemicals CorporationInventors: Weilong L. Chiang, Boh C. Tsai, Stephen Y. Chen, Lakshmi N. Venkateshwaran
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Patent number: 6369141Abstract: The present invention provides a flame-retardant polycarbonate resin composition which comprises (a) 100 parts by weight of an aromatic polycarbonate resin, (b) 0.5-40 parts by weight of a phosphorus-containing flame retardant, (c) 0.01-5 parts by weight of polyfluoroethylene, (d) 0-5 parts by weight of sulfonic acid metal salt, and (e) 0.5-30 parts by weight of a multi-layered polymer having a core made of an elastic polymer having a glass-transition temperature (Tg) lower than a room temperature, and an outer layer made of a thermoplastic resin having an adhesiveness or miscibility to polycarbonate, provided that the composition comprises 3-40 parts by weight of a phosphorus-containing flame retardant when said composition comprises substantially no sulfonic acid metal salt.Type: GrantFiled: November 16, 1999Date of Patent: April 9, 2002Assignee: Mitsubishi Engineering-Plastics CorporationInventors: Kazuhiko Ishii, Ken Shimomai, Michio Nakata
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Patent number: 6369140Abstract: A polyolefinic composition comprising as component a) one or more compounds of formula I to III in which each R1 independently is selected from linear or branched C1-30alkyl, C5-12cycloalkyl, C2-24alkenyl, C2-18alkoxyalkyl, C2-19methoxyalkanoyl, C7-30alkaryl, C7-30aralkyl, C4-24heteroaryl (where any one of the above substituents of R1 are unsubstituted or are substituted by 1 to 3 groups selected from C1-12alkyl, —OR4, —NR4R5, —COR4 and —COOR4); and C6-30aryl, unsubstituted or substituted by 1 to 5 groups R3 selected from C1-12alkyl, C1-8alkoxy, C5-6cycloalkyl, phenyl or phenoxy, —OR4, —NR4R5, —COR4 and —COOR4, R4 and R5 independently are selected from hydrogen, C1-30alkyl (linear or branched), C5-12cycloalkyl, C6-24aryl, C7-30alkaryl or C7-30aralkyl; A is a direct bond, a group —(P-R1)p— or an n-valent aliphatic or aromatic residue, (preferably C1-30alkylene (linear or branched), C5-12cycloalkylene, C7-30alkarylene, C7-30aralkylType: GrantFiled: September 28, 1995Date of Patent: April 9, 2002Assignee: Clariant Finance (BVI) LimitedInventor: Peter Staniek
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Patent number: 6365653Abstract: Nonblack elastomers, which have excellent stability against oxidative, light- or ozone-induced degradation, comprise as stabilizers at least one compound of formula I wherein R1 is hydrogen, C1-C12alkyl, cyclohexyl, phenyl or benzyl, R2 is hydrogen or C1-C4alkyl, and n is the number 0, 1 or 2. The compounds of formula I are excellently suitable as colour-stable and nonstaining stabilizers and antiozonants for protecting nonblack elastomers against oxidative, thermal, light- or ozone-induced degradation.Type: GrantFiled: October 27, 2000Date of Patent: April 2, 2002Assignee: Ciba Specialty Chemicals CorporationInventors: Hans-Rudolf Meier, Gerrit Knobloch
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Patent number: 6365651Abstract: A synergistic stabilizer mixture comprising a component a) and, for example, a component b), where component a) is at least one compound of the formula I in which R1 is C1-C10alkyl, C5-C12cycloalkyl, C1-C4alkyl-substituted C5-C12cycloalkyl, phenyl or C1-C10alkyl-substituted phenyl, R2 is C3-C10alkylene, R3 is hydrogen, C1-C8alkyl, O, —CH2CN, C3-C6alkenyl, C7-C9phenylalkyl, C7-C9phenylalkyl which is substituted on the phenyl radical by C1-C4alkyl; or C1-C8acyl, and n1 is a number from 1 to 50, and component b) another HALS compound.Type: GrantFiled: March 18, 1999Date of Patent: April 2, 2002Assignee: Ciba Specialty Chemicals CorporationInventor: François Gugumus
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Patent number: 6362261Abstract: A method of preparing a modified cationic layer compound which includes providing a layer compound of the general formula (I): [EeZzDdVv(OH−)x](An−)a.qH2O (I) wherein E represents one or more monovalent alkali metal cations, e represents a number of from 0 to about 2, Z represents one or more divalent metal cations, z represents a number of from 0 to about 6, D represents one or more trivalent metal cations, d represents a number of from 0 to about 3, V represents one or more tetravalent metal cations, v represents a number of from 0 to about 1, (An−) represents an acid anion wherein n represents an integer of from 1 to 3, q represents a number of from about 1 to about 10, and wherein x>a and e+2z+3d+4v=x+na; subjecting the layer compound to crystallization to provide a resultant material; and subjecting the resultant material to steam drying at a temperature of from about 200° C. to about 260° C.Type: GrantFiled: October 2, 2000Date of Patent: March 26, 2002Assignee: Cognis Deutschland GmbHInventors: Ilona Lange, Joerg-Dieter Klamann, Peter Daute, Juergen Foell, Peter Wedl, Stefan Kuepper
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Patent number: 6362279Abstract: An ecological fire retardant blend of thermoplastics is provided. That is, to one or more organic polymers is added one or more preceramic oligomers or preceramic polymers to provide a blend of polymers of reduced flammability which do not significantly increase the levels of smoke, carbon monoxide or other toxics during combustion. In one example a preceramic polymer, eg. a polysilane resin is added to a polyolefin to provide an ecological fire retardant blend per the invention.Type: GrantFiled: December 18, 1998Date of Patent: March 26, 2002Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: Joseph D. Lichtenhan, Jeffrey W. Gilman
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Patent number: 6362258Abstract: A thermoplastic polymer composition includes a polyolefin polymer, silica; a phosphorus-containing antioxidant compound; and a co-additive that includes one or more of (i) a polyalkylene glycol having a number average molecular weight of greater than or equal to 3,000, (ii) a polyalkylene oxide, (iii) a sterically hindered amine compound.Type: GrantFiled: December 29, 1995Date of Patent: March 26, 2002Assignee: General Electric CompanyInventors: Roger W. Avakian, Henry C. Ashton
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Patent number: 6362264Abstract: Disclosed is a composition of matter which provides heat and color stability to polyvinyl chloride resins, especially of the flexible type, said composition consists essentially of (A) about 10 to about 40 parts by weight of a zinc carboxylate; (B) about 50 to about 80 parts by weight of an alkyl ester of thiodipropionic acid; and (C) abqut 5 to about 20 parts by weight of a phenolic antioxidant. A PVC resin containing the above composition of matter is also disclosed.Type: GrantFiled: December 20, 1996Date of Patent: March 26, 2002Assignee: CK Witco CorporationInventor: Kook Jin Bae
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Patent number: 6355725Abstract: A propylene-ethylene block copolymer composition is disclosed which comprises 0.01 to 10% by weight of an A-B type propylene-ethylene block copolymer (C) consisting essentially of a polypropylene segment (A) and an ethylene-propylene random copolymer segment (B), and 99.99 to 90% by weight of a propylene polymer (D), wherein the A-B type propylene-ethylene block copolymer (C) comprises 5 to 80% by weight of the ethylene-propylene random copolymer segment (B) having an ethylene content of 10 to 90% by weight and the propylene polymer (D) comprises 60 to 95% by weight of a homopolymer of propylene or a copolymer of propylene containing a copolymerizable monomer therewith (D1) and 40 to 5% by weight of an ethylene-propylene random copolymer (D2).Type: GrantFiled: January 19, 2001Date of Patent: March 12, 2002Assignees: Chisso Corporation, Chisso Petrochemical CorporationInventors: Minoru Terano, Takahiro Oka, Nobutoshi Komori, Tetsuya Matsukawa
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Patent number: 6355710Abstract: A rubber composition comprising (A) at least one natural or synthetic diene rubber, (B) an inorganic filler comprising at least one of silica and silicates as the main component and (C) an addition salt of an amine represented by general formula (I): wherein R1 represents a C8 to C24 alkyl group, an aryl group or an aralkyl group, R2 and R3 represent a hydrogen atom, a C1 to C12 alkyl group, an aryl group, an aralkyl group or a hydroxyalkyl group and R4 represents a C6 to C24 alkyl or alkenyl group, an aryl group or an aralkyl group; and a pneumatic tire produced by using the rubber composition.Type: GrantFiled: August 28, 2000Date of Patent: March 12, 2002Assignees: Bridgestone Corporation, Kao CorporationInventors: Kazuhiro Yanagisawa, Masaaki Tsuchihashi, Isao Nishi, Tetsuo Takano
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Patent number: 6353048Abstract: A resin composition comprising a saponified ethylene-vinyl acetate copolymer (A) and a metal soap (B) of the general formula (1) obtained by an acid with a group 2 metal oxide or hydroxide. &agr;MO.M(OOCR)2 (1) wherein &agr; represents a numerical value of 0.1˜1.0; M represents a bivalent metal belonging to Group 2 of Periodic Table of the Elements; R represents a saturated or unsaturated alkyl group containing 11˜29 carbon atoms.Type: GrantFiled: April 5, 2000Date of Patent: March 5, 2002Assignee: Nippon Gohsei Kagaku Kogyo Kabushiki KaishaInventors: Hideshi Onishi, Masashi Sogawa
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Patent number: 6346568Abstract: Provided is a liquid crystal polyester resin composition prepared by compounding glass fiber with a liquid crystal polyester resin, wherein said glass fiber has been surface-treated with a thermosetting resin and the ignition loss of the surface-treated glass fiber is from 0.05 to 0.4% by weight. The molded article obtained by using the composition of the present invention have excellent mechanical property and heat-resistance, particularly, solder heat-resistance, and are extremely useful as materials for which heat-resistance is required such as electric and electronic parts.Type: GrantFiled: May 10, 2000Date of Patent: February 12, 2002Assignee: Sumitomo Chemical Company, LimitedInventors: Mituo Maeda, Hiroshi Nakamura
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Patent number: 6346570Abstract: Provided are a water resistant composition comprising a uniform mixture of (A) at least one of modified polyvinyl alcohol containing either from 1 to 20 mol % of &agr;-olefin units with not more than 4 carbon atoms, from 0.01 to 1 mol % of silyl groups, or from 1 to 20 mol % of &agr;-olefin units with not more than 4 carbon atoms and from 0.01 to 1 mol % of silyl groups and (B) an organotitanium compound having a chelating ligand, in a blend ratio of component (A) to the component (B) between 99.99/0.01 and 60/40 by weight; a coating agent comprising the composition; a thermal recording material having a coat layer of the composition; and an ink-jet recording material having an ink-absorbing layer of the composition.Type: GrantFiled: August 22, 2000Date of Patent: February 12, 2002Assignee: Kuraray Co., Ltd.Inventors: Somemiya Kazuyuki, Sadahiko Shiraga, Naoki Fujuwara, Atsushi Jikihara, Toshiyuki Akasawa
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Patent number: 6344505Abstract: Provided is a composition which contains a mono- or bis-benzotriazole compound, an N-oxide thereof, or a mixture of at least two of the preceding compounds. Representative bis-benzotriazole compounds include 3,3′-bis-(2H-benzotriazol-2-yl)-5,5′-di-tert-octyl-1,1′-biphenyl-2,2′-diols. Representative mono-benzotriazole compounds include 3-(2H-benzotriazol-2-yl)-5,5′-di-tert-octyl-1,1′-biphenyl-2,2′-diols. These mono- and bis-benzotriazole compounds are useful as stabilizers of degradable polymers against the degradative action of ultraviolet light. Also provided is a method of making these benzotriazole compounds by oxidative dimerization of the corresponding monomeric benzotriazole or by reductive cyclization of the corresponding azo- compound.Type: GrantFiled: November 11, 1999Date of Patent: February 5, 2002Assignee: Cytec Industries Inc.Inventors: Donald H. Valentine, Jr., John F. Stephen, Thomas P. Sassi
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Patent number: 6342548Abstract: The invention is concerned with a flame retardant polyamide composition in which melam is the flame retardant component. Very advantageous are polyamide compositions having a melting temperature of at least 260° C. preferably 280° C. in which for the first time with a non-halogen containing flame retardant at relatively low concentration high flame retardancy ratings can be obtained. Preferably the melam contains less then 2.0% by weight residual catalyst. The compositions are useful for cablecoatings, tubing, films, fibers and electric or electronic components.Type: GrantFiled: June 2, 1997Date of Patent: January 29, 2002Assignee: DSM N.V.Inventors: Peter Flippo, Johannes Tijssen, Chi K. Sham, Augustinus E. H. de Keijzer, Richerdus J. M. Hulskotte
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Patent number: 6342549Abstract: Cycloolefin resin pellets of the present invention comprises a cycloolefin resin pellet and a powdery coating material and/or a liquid coating material, the melting point or the glass transition point of the coating material being 200° C. or lower, and the coating material being adhered onto the surface of the cycloolefin resin pellets, so that the molded product thereof is excellent in transparency.Type: GrantFiled: January 5, 1996Date of Patent: January 29, 2002Assignees: Mitsui Chemicals, Inc., Ticona GmbHInventors: Toshiyuki Hirose, Yohzoh Yamamoto, Toshio Kimura, Shinji Osato
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Patent number: 6342556Abstract: A coating is described which includes submicronized zinc oxide, an acrylic latex composition and a viscosity control agent, which coating when applied to a substrate prevents UV degradation and general accelerated weathering.Type: GrantFiled: April 16, 1996Date of Patent: January 29, 2002Assignee: Foster ProductsInventors: Vernon H. Batdorf, Troy R. Anderson