Bromine-containing Organic Compound Patents (Class 524/469)
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Patent number: 6180251Abstract: A thermoplastic resin having such a sufficient heat shock resistance that it is unbroken by common temperature changes and also exhibiting an excellent flame resistance when applied to an insert molded article, which is obtained by blending a thermoplastic polyester resin (A) with 1-25% by weight to the total amount of the composition of an impact resistance giving agent (B), 1-50% by weight to the total amount of the composition of an inorganic filler (C), 1-25% by weight to the total amount of the composition of a flame retardant (D) and 0.1-10% by weight to the total amount of the composition of an aromatic polyvalent carboxylate (E).Type: GrantFiled: March 22, 2000Date of Patent: January 30, 2001Assignee: Polyplastics Co. Ltd.Inventors: Hiroyuki Kanai, Kei Aoki, Toru Katsumata
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Patent number: 6117371Abstract: A preferred process for producing a brominated, non-fused aromatic composition involves a continuous bromination in a continuous, mixed reactor such as a continuous stirred tank reactor. Bromine and the aromatic substrate, and optionally a bromination catalyst, are continuously fed to a reaction zone to form a reaction mixture, and the reaction mixture is continuously withdrawn from the reaction zone after an established average residence time. Bromination levels can be readily controlled by controlling the average residence time of the reaction mixture within the reaction zone. Preferred continues processes also provide mixed, brominated compositions having product distributions which are substantially broader than that obtained by batch brominations conducted to achieve the same level of bromination. Preferred products thus have broad melting ranges which are advantageous in compounding operations.Type: GrantFiled: April 21, 1998Date of Patent: September 12, 2000Assignee: Great Lakes Chemical CorporationInventor: Arthur G. Mack
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Patent number: 6110999Abstract: A composition is disclosed that comprises at least one base polymer, at least one resin and optionally one or more additives such as a filler, colorant, among other additives. The disclosed composition can applied by spraying, immersion, brushing, rolling onto the adherent surface; caulking, among other methods of application.Type: GrantFiled: March 5, 1999Date of Patent: August 29, 2000Assignee: Denovus LLCInventors: Darren Lee Ourth, Jess Rogers, Jeffrey J. Richerson
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Patent number: 6063852Abstract: Novel brominated polyphenylmethanes, such as poly(tetrabromobenzyl bromide), are provided in a one step process by reacting a benzyl halide and bromine in the presence of a Friedel Crafts catalyst. The brominated polyphenylmethanes can be added to flammable organic polymers to make flame retardant polymer compositions.Type: GrantFiled: June 4, 1998Date of Patent: May 16, 2000Assignee: Albermarle CorporationInventor: Saadat Hussain
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Patent number: 6008283Abstract: Flame retardants comprising oligomeric bromine-containing compounds comprising aryl groups that are connected by aliphatic chains are described. Flame retardant compositions comprising the flame retardants of the present invention and flame retardant aids are also described. Polymeric compositions comprising the flame retardants of the present invention optionally combined with a flame retardant aid, along with a method of fireproofing a material, are further described.Type: GrantFiled: March 19, 1998Date of Patent: December 28, 1999Assignee: Great Lakes Chemical CorporationInventors: Richard S. Rose, Gurudas Zingde, David M. Hemmerly
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Patent number: 5990213Abstract: Flame resistant polyester resin composition comprising a polyester matrix resin containing a polyalkylene oxide, a brominated flame retardant, and a brominated dialkyl phthalate which exhibits low melt viscosity, excellent flow, improved welding strength and resistance to thermal shock.Type: GrantFiled: November 5, 1997Date of Patent: November 23, 1999Assignee: E. I. du Pont de Nemours and CompanyInventor: Toshikazu Kobayashi
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Patent number: 5977233Abstract: The present invention provides a method of producing a flame-retardant polymer comprising mixing one or more polymeric base resins with a source of brominated syndiotactic polystyrene that displays a noncrystalline order and is produced by a process comprising brominating syndiotactic polystyrene in an inert reaction medium that is incapable of dissolving to any appreciable degree syndiotactic polystyrene at ambient temperature and pressure. The produced brominated syndiotactic polystyrene has a melting temperature in excess of about 325.degree. C.Type: GrantFiled: October 12, 1998Date of Patent: November 2, 1999Assignee: Ferro CorporationInventors: James L. Dever, James C. Gill
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Patent number: 5883178Abstract: The invention relates to crystalline polyolefin resin compositions obtained by blending 40 to 85% by weight of a crystalline propylene polymer, 3 to 40% by weight of an inorganic filler, 7 to 30% by weight of a halogen-containing flame retardant comprising ethylenebistetrabromophthalimide, decabromodiphenylethane, or their mixture, and 3 to 15% by weight of a flame retarding auxiliary; and electrical insulating parts obtained by molding the crystalline polyolefin resin composition.By using the crystalline polyolefin resin compositions of the invention, blooming (separation, in a powder-like form, of an ingredient) on the surface of a mold at the time of injection molding can be prevented, deterioration in appearance of final products due to the transfer of the bleeded ingredient to the surface of the mold is obviated, and decrease in productivity caused by wiping the bleeded ingredient off the mold can be avoided.Type: GrantFiled: August 13, 1997Date of Patent: March 16, 1999Assignee: Chisso CorporationInventors: Hiromi Ohmoto, Mitsuhiro Touhara
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Patent number: 5882551Abstract: The present invention provides a new flame-retardant additive comprising brominated syndiotactic polystyrene. The additive has a melting temperature in excess of about 325.degree. C. and it displays a noncrystalline order. The additive also has less than 1500 ppm halogen located on the backbone of the syndiotactic polystyrene as measured in HBr equivalents. The additive provides for better color and improved thermal stability as compared to the use of conventional brominated polystyrene.Type: GrantFiled: April 11, 1997Date of Patent: March 16, 1999Assignee: Ferro CorporationInventors: James L. Dever, James C. Gill
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Patent number: 5741949Abstract: A preferred process for producing a brominated, non-fused aromatic composition involves a continuous bromination in a continuous, mixed reactor such as a continuous stirred tank reactor. Bromine and the aromatic substrate, and optionally a bromination catalyst, are continuously fed to a reaction zone to form a reaction mixture, and the reaction mixture is continuously withdrawn from the reaction zone after an established average residence time. Bromination levels can be readily controlled by controlling the average residence time of the reaction mixture within the reaction zone. Preferred continuos processes also provide mixed, brominated compositions having product distributions which are substantially broader than that obtained by batch brominations conducted to achieve the same level of bromination. Preferred products thus have broad melting ranges which are advantageous in compounding operations.Type: GrantFiled: April 8, 1996Date of Patent: April 21, 1998Assignee: Great Lakes Chemical CorporationInventor: Art Mack
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Patent number: 5710354Abstract: A two step bromination process for manufacturing a polybrominated indane product such as octabromophenyl indane comprises the steps of:(a) forming an intermediate by reacting an indane compound with bromine, under reaction conditions so as to dissolve and partially ar-brominate the indane compound to contain an average of at least about two ar-bromine atoms per molecule, and(b) catalytically ar-brominating the intermediate to obtain a polybrominated indane product, the catalytic ar-bromination occurring in the presence of an aluminum or iron containing bromination catalyst or other bromination catalyst having a catalytic activity substantially equivalent thereto and in a mole ratio of bromine to said intermediate of at least 5.Type: GrantFiled: August 29, 1996Date of Patent: January 20, 1998Assignee: Albemarle CorporationInventor: Saadat Hussain
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Patent number: 5686514Abstract: A fire retardant system useful in a thermosetting resin system comprises a dispersion of particles of a halogen-containing organic material and an inorganic synergist in a liquid phosphorus carrier. The particles in the blend are reduced to 20 microns or less by suitable means, for example, by processing through a 3-roll mill. The composition is incorporated into the resin in an amount of between 3% and 15% by weight of resin where the dispersion remains in suspension during curing of the resin. The thermosetting resin is a saturated or an unsaturated resin such as a polyester, a polyepoxide or a polyurethane. The resin when formed into a ceiling panel has a flame-spread index less than 25 and a smoke rating of 450 or less when tested according to ASTM Test E-84.Type: GrantFiled: August 24, 1995Date of Patent: November 11, 1997Assignee: Sequentia, Inc.Inventors: Charles E. Bayha, Arthur H. Conley
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Patent number: 5674972Abstract: This invention relates to polyamide-based formulations flame retarded with synergized brominated flame retardants and having good thermal stability.Type: GrantFiled: July 27, 1995Date of Patent: October 7, 1997Assignee: Albemarle CorporationInventors: Luc Van Wabeeke, Daniel De Schryver
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Patent number: 5567517Abstract: The invention provides a thermoplastic resin fiber which forms no dioxin-related compound when oxidized or burned, and is excellent in flame retardancy even when the content of a flame retardant is low. This flame-retardant fiber contains 5 to 15% by weight of a flame retardant having the following general formula (1): ##STR1## where R1 to R5 and R'1 to R'5 are independently Br or Cl with the Br/Cl ratio lying in the range of 100/0 to 40/60, and n is an integer of 2 to 16, and 2 to 8% by weight of antimony oxide as a flame retardant promoter.Type: GrantFiled: June 28, 1995Date of Patent: October 22, 1996Assignee: Chisso CorporationInventors: Yuji Nakajima, Masahiko Taniguchi
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Patent number: 5358991Abstract: A flame retarded composition for wire insulations that includes a polyethylene blend having a high density polyethylene, in an amount from about 50 to about 95 parts per hundred, and a very low density polyethylene, in an amount from about 5 to about 50 parts per hundred, a primary brominated flame retardant, in an amount from about 30 to about 40 parts per hundred, a secondary chlorinated flame retardant, in an amount from about 5 to about 15 parts per hundred, a first flame retarding synergist, in an amount from about 12 to 20 parts per hundred, a second flame retarding synergist, in an amount from about 7 to about 11 parts per hundred, a first hindered phenolic stabilizer, in an amount from about 0.05 to about 0.30 parts per hundred, and a second hundred phenolic stabilizer, in an amount from about 0 to about 0.30 parts per hundred, a polypropylene polymer in an amount from 2 to 10 parts per hundred.Type: GrantFiled: July 15, 1993Date of Patent: October 25, 1994Assignee: Belden Wire & Cable CompanyInventor: Douglas D. O'Brien
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Patent number: 5344868Abstract: Glass-reinforced polyglutarimides exhibit improved impact resistance when low levels of phenoxy resin are incorporated into the blend.Type: GrantFiled: March 23, 1993Date of Patent: September 6, 1994Assignee: Rohm and Haas CompanyInventors: Michael P. Hallden-Abberton, William J. Work, Mark A. Abramowicz, Phuong N. Duong
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Patent number: 5326797Abstract: A roofing system incorporates a fire resistant asphalt composition comprising a thermoplastic elastomer modified bitumen, a filler, a brominated diphenyl ether, antimony oxide, and zinc borate. The asphalt composition is utilized with and impregnated into at least one layer of fiberglass or polyester mat. Preferably at least two layers are utilized wherein an upper layer is a fiberglass mat and a lower layer is a polyester mat, both mat layers being impregnated with the composition. In its preferred formulation, the asphalt composition comprises, in weight percent, about 30% to 90% bitumen, about 4% to 16% styrene-butadiene-styrene copolymer, about 10% to 40% filler, and up to about 20% each of the brominated diphenyl ether, the antimony oxide, and the zinc borate. The preferred brominated diphenyl ether is decabromodiphenyl ether.Type: GrantFiled: August 31, 1992Date of Patent: July 5, 1994Assignee: GS Roofing Products Company, Inc.Inventors: Harold Zimmerman, David Ploense, Robert Lilleston, Mario Butera
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Patent number: 5256718Abstract: The present invention provides resin compositions containing thermoplastic resins. Thermoplastic resins employable for the compositions are polyolefin resins, polyester resins, polystyrene resins, polyamide resins and polyphenylene ether resins. The present invention can be particularly effected by using polyamide, particularly, specific aromatic polyamides.In the present invention, the resin compositions can be improved in various chemical and physical properties such as flame-retardance, moldability, color tone, heat stability, mechanical strength by the use of other resin component and stabilizers such as halogenated organic compounds, modified polyolefins, antimony compounds, phosphorus-containing compounds, amine- or phosphorus-type stabilizers.Type: GrantFiled: February 12, 1991Date of Patent: October 26, 1993Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Sanehiro Yamamoto, Hideki Sakai, Hirotaka Aso, Kazuo Ishiwatari, Fumitoshi Ikejiri
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Patent number: 5157064Abstract: The invention relates to a stabilized polyamide 4.6 composition, which includes copper in the form of a water insoluble copper salt and a halogen-substituted organic compound.Type: GrantFiled: March 27, 1990Date of Patent: October 20, 1992Assignee: Stamicarbon B.V.Inventor: Pieter Gijsman
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Patent number: 5115010Abstract: A composition comprising (I) a thermally stable polyamide such as an aromatic polyamide, (II) a halogenated polystyrene or a halogenated polyphenylene oxide, and (III) sodium antimonate has excellent fire retardancy and excellent thermal stability during molding. The thermal stability of the composition is further enhanced by including (IV) a hydrotalcite-type complex hydroxide or (V) magnesium oxide and/or zinc oxide.Type: GrantFiled: April 15, 1991Date of Patent: May 19, 1992Assignee: Mitsui Petrochemical Industries, Inc.Inventors: Hideki Sakai, Kazuo Ishiwatari, Fumitoshi Ikejiri
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Patent number: 5112898Abstract: Effective amounts of low molecular weight brominated polystyrenes unexpectedly provide good property retention and yet achieve desired flame retardance, for example, UL-94 VO in high impact polystyrene. In contrast, high molecular weight brominated styrene polymers (degree of polymerization equals 2,000) do not provide good property retention such as impact strength and toughness in high impact polystyrene. The degree of polymerization of the brominated polystyrenes of the present invention is generally from about 3 to about 20 and can have a considerable variation in the amount of halogenation. The high impact polystyrenes blended with the low molecular weight brominated polystyrenes are readily processed by conventional equipment.Type: GrantFiled: October 25, 1990Date of Patent: May 12, 1992Assignee: Ferro CorporationInventors: James L. Dever, James C. Gill
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Patent number: 5112897Abstract: Effective amounts of low molecular weight brominated polystyrenes unexpectedly provide good property retention and yet achieve desired flame retardance, for example, UL-94 VO in high impact polystyrene. In contrast, high molecular weight brominated styrene polymers (degree of polymerization equals 2,000) do not provide good property retention such as impact strength and toughness in high impact polystyrene. The degree of polymerization of the brominated polystyrenes of the present invention is generally from about 3 to about 20 and can have a considerable variation in the amount of halogenation. The high impact polystyrenes blended with the low molecular weight brominated polystyrenes are readily processed by conventional equipment.Type: GrantFiled: October 25, 1990Date of Patent: May 12, 1992Assignee: Ferro CorporationInventors: James L. Dever, James C. Gill
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Patent number: 5112896Abstract: Effective amounts of low molecular weight brominated polystyrenes unexpectedly provide good property retention and yet achieve desired flame retardance, for example, UL-94 VO in high impact polystyrene. In contrast, high molecular weight brominated styrene polymers (degree of polymerization equals 2,000) do not provide good property retention such as impact strength and toughness in high impact polystyrene. The degree of polymerization of the brominated polystyrenes of the present invention is generally from about 3 to about 20 and can have a considerable variation in the amount of halogenation. The high impact polystyrenes blended with the low molecular weight brominated polystyrenes are readily processed by conventional equipment.Type: GrantFiled: December 5, 1990Date of Patent: May 12, 1992Assignee: Ferro CorporationInventors: James L. Dever, James C. Gill
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Patent number: 5106889Abstract: A dispersion of a colored high-molecular weight particulate material is prepared by a) mixing a pigment with an aqueous emulsion of a resin to form a dispersion of the pigment within the emulsion; b) combining the dispersion with particles of polyvinyl chloride containing a plasticizer to form a mixture; and c) adding a metal salt to the mixture to cause the resin to coagulate onto the particles of the polyvinyl chloride. A film comprising the resin and the pigment is formed on the particles of the polyvinyl chloride.Type: GrantFiled: August 16, 1990Date of Patent: April 21, 1992Assignee: Asahipen CorporationInventors: Tadamitsu Hirata, Yoshihiko Nishimura
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Patent number: 5079283Abstract: A flame-retardant polypropylene composition comprises a modified polypropylene-based polymer, antimony oxide or sodium antimonate, and a halogenated organic compound or, in lieu thereof, a phosphorous-containing compound. The polypropylene-based polymer is modified in the presence of a free-radical generator source which typically is an organic peroxide so that it has a narrow polydispersity range, improved flow, and lower compounding and molding temperatures so that temperature-sensitive components are protected from thermal degradation. The modification of the polypropylene-based polymer generally occurs in situ in the processing apparatus and the composition can also contain various fillers, fibers, and the like.Type: GrantFiled: March 26, 1990Date of Patent: January 7, 1992Assignee: Ferro CorporationInventors: Neil A. Burditt, Deenadayalu Chundury
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Patent number: 5077337Abstract: Described are polypropylene polymer compositions which have suprisingly good physical properties in combination with flame retardancy, which include graft copolymers represented by the formula: ##STR1## wherein n is >1, P is polypropylene, and S is a grafted side chain having brominated monomeric units of the formula: ##STR2## wherein x=1 to 4, R.sub.1 is H or CH.sub.3, and R.sub.2 is H or a C.sub.1-4 lower alkyl group. Polymer blends including such graft copolymers and methods for making flame retardant polymer compositions are also described.Type: GrantFiled: February 22, 1990Date of Patent: December 31, 1991Assignee: Great Lakes Chemical CorporationInventors: Ray W. Atwell, Nicolai A. Favstritsky, Harry A. Hodgen, Enrico J. Termine
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Patent number: 5077334Abstract: This invention relates to a process for preparing a product which is predominant in decabromodiphenyl alkane. The process comprises: forming a stirrable reaction mass by adding a solution containing methylene bromide and diphenylalkane to a reaction vessel containing elemental bromine (Br.sub.2) and a bromination catalyst; maintaining the reaction mass for a period of time sufficient to achieve perbromination of substantially all of said diphenylalkane; and recovering from the reaction mass the product which is predominant is decabromodiphenyl alkane.Type: GrantFiled: January 7, 1991Date of Patent: December 31, 1991Assignee: Ethyl CorporationInventor: Saadat Hussain
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Patent number: 5053447Abstract: This invention relates to thermoplastic formulations which comprise: (1) at least 50 weight percent, based upon the total weight of the formulation, unreinforced nylon selected from nylon 6,6 nylon 6 or mixtures thereof, and (2) a sufficient amount of decabromodiphenyl ethane to provide a melt index, as measured by ASTM D 1238-79, 265.degree. C./1200 grams, which is higher than the like-measured melt index of such nylon alone.This invention also relates to thermoplastic formulations which comprise: (1) at least 50 weight percent, based upon the total weight of the formulation, reinforced nylon selected from glass reinforced nylon 6,6, glass reinforced nylon 6 or mixtures thereof, and (2) a sufficient amount of decabromodiphenyl ethane to provide a melt index, as measured by ASTM D 1238.LAMBDA., 275.degree. C./550 grams, which is higher than the like-measured melt index of such reinforced nylon alone.Type: GrantFiled: November 29, 1989Date of Patent: October 1, 1991Assignee: Ethyl CorporationInventor: Saadat Hussain
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Patent number: 5028654Abstract: The invention seeks to improve the preheating resistance and high temperature resistance during vulcanization of a cement for the vulcanization of rubber onto metals. Such cements conventionally contain metal-binding polymers, dinitrosobenzene, organic solvents and, optionally, other components, such as acid-binding agents and reinforcing fillers. The goals of the invention are achieved by partial replacement of the usual metal-binding polymers by substituted aromatic compounds bearing two or more substituent groups having the formula --CH.sub.2 Br.Type: GrantFiled: April 6, 1989Date of Patent: July 2, 1991Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Willi Wuest, Wolf-Dieter Beiersdorf
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Patent number: 5008323Abstract: Flame retardant PVC compositions incorporate a non-flame retardant primary plasticizer, an effective amount of a polybrominated higher alkylbenzene or mixture thereof, a stabilizer and an enhancing agent.Type: GrantFiled: September 13, 1989Date of Patent: April 16, 1991Assignee: Great Lakes Chemical CorporationInventors: Nicolai A. Favstritsky, Robert J. Nulph
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Patent number: 4992496Abstract: It was unexpectedly found that a brominated phosphate ester, tris(2,4-dibromophenyl)phosphate when employed in flame retardant quantities in a modified polyphenylene oxide resin resulted in discoloration of the resin on aging. Neither phosphate esters, flame retardants nor brominated flame retardants when employed separately as flame retardants caused similar discoloration. The use of epoxy compounds counteracted this color stability problem.Type: GrantFiled: September 3, 1987Date of Patent: February 12, 1991Assignee: FMC CorporationInventor: Joseph Green
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Patent number: 4973623Abstract: A room temperature curing composition which cures fast and has good reversion resistance and good package stability is a mixture of 66.75 to 89.4 weight percent of a hydroxyl endblocked polydiorganosiloxane; 5.5 to 10 weight percent of a tetrafunctional ethoxy-ketoximo silane mixture having 6 to 27 weight perent tetraketoximosilane, 9 to 39 weight percent of monoethoxytriketoximosilane, 38 to 60 weight percent of diethoxydiketoximosilane, and 5.5 to 25 weight percent triethoxymonoketoximosilane; 0.1 to 0.25 weight percent of a tin catalyst, 0 to 3 weight percent of an adhesion promoter, and 5 to 20 weight percent of reinforcing silica. These compositions cure to elastomeric materials useful as caulking materials, adhesives, coatings and encapsulating materials for construction and automotive industries.Type: GrantFiled: May 26, 1989Date of Patent: November 27, 1990Assignee: Dow Corning CorporationInventors: Michael H. Haugsby, Loren D. Lower
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Patent number: 4959387Abstract: A method of treating rheumatoid arthritis which method comprises administering to a mammal in need of such treatment a therapeutically effective amount of a compound of the formula: ##STR1## and the pharmaceutically acceptable salts thereof, wherein: A is oxygen or sulfur;R.sup.1 is selected from the group consisting of H, ##STR2## in which Y is oxygen or sulfur:R.sup.2 is alkyl, haloalkyl or --NR.sup.4 R.sup.5, where R.sup.4 and R.sup.5 are independently H, alkyl, haloalkyl, cycloalkyl, phenyl optionally monosubstituted with halogen, hydroxy, carboxy, chlorocarbonyl, nitro, cyano, phenyl, alkyl, acyl, alkoxycarbonyl, acylamino, dialkylamino or dialkylaminoethoxycarbonyl, phenyl optionally disubstituted with hydroxy, carboxy, nitro or alkyl, or benzyl optionally substituted with dialkylamino;n is an integer from 0-6;R.sup.3 is H alkyl or a pharmaceutically acceptable cation;Q and R are independently H or --CO.sub.2 R.sup.Type: GrantFiled: November 24, 1987Date of Patent: September 25, 1990Assignee: Syntex (U.S.A.) Inc.Inventors: Peter H. Nelson, Anthony C. Allison, Elsie M. Eugui, Joseph M. Muchowski
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Patent number: 4832873Abstract: Polybrominated higher alkylbenzenes may be produced by reacting the corresponding hydrocarbon material with bromine chloride in an excess bromine reaction medium in the presence of an antimony halide catalyst.Type: GrantFiled: October 9, 1987Date of Patent: May 23, 1989Assignee: Great Lakes Chemical CorporationInventors: Nicolai A. Favstritsky, Dennis M. Borden
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Patent number: 4831072Abstract: Flame retardant MPPE compositions incorporate an effective amount of a polybrominated higher alkylbenzene or mixture thereof as a flame retardant and flow modifier together with an enhancing agent.Type: GrantFiled: October 9, 1987Date of Patent: May 16, 1989Assignee: Great Lakes Chemical CorporationInventors: Nicolai A. Favstritsky, Robert J. Nulph, Dennis M. Borden
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Patent number: 4829118Abstract: Flame retardant ABS compositions incorporate an effective amount of a polybrominated higher alkylbenzene or mixture thereof and an enhancing agent.Type: GrantFiled: October 9, 1987Date of Patent: May 9, 1989Assignee: Great Lakes Chemical CorporationInventors: Nicolai A. Favstritsky, Enrico J. Termine, Dennis M. Borden
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Patent number: 4801405Abstract: There have been provided hard-to-combustion property impartation agents for polyester fibers. The agent is prepared by dissolving an alkyl cyclohexane containing bromine atoms in a solvent and dripping the solution into a liquid to provide an emulsion or dispersion of alkyl cyclohexane containing bromine.Type: GrantFiled: April 8, 1987Date of Patent: January 31, 1989Inventors: Mamoru Yamada, Takeo Tanaka
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Patent number: 4788244Abstract: A flame-resistant composition comprising a blend of (I) polyamide, (II) a brominated polystyrene and (III) a copolymer of an aromatic vinyl compound and an .alpha., .beta.-unsaturated dicarboxylic acid anhydride, wherein the .alpha., .beta.-unsaturated dicarboxylic acid anhydride component of the copolymer is present in an amount of 0.06-0.75 wt % based on the total weight of (I), (II) and (III).Type: GrantFiled: January 27, 1988Date of Patent: November 29, 1988Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Junnichi Nakahashi, Takuo Shigetomi, Shinichi Kai
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Patent number: 4786663Abstract: The present invention provides flame retardant resin compositions containing thermoplastic polyesters, organic halides and sodium antimonate, characterized in that the sodium antimonate has a ratio of the peak intensity of X-ray diffraction from face distances d of 5.25.about.5.35 (.ANG.) to that of 2.64.about.2.66 (.ANG.) being 1.5 or higher and mean particle diameter of 0.5.about.50 .mu.m, and is 1.about.15 parts by weight in proportion to 100 parts by weight of the aformentioned thermoplastic polyester. This invention provides thermoplastic resin compositions excellent in mechanical properties, hygroscopicity and thermal stability.Type: GrantFiled: January 22, 1987Date of Patent: November 22, 1988Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Shunitsu Miyashita, Kenji Mogami
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Patent number: 4743642Abstract: A rubber-reinforced polymeric composition is disclosed having enhanced color stability upon exposure to ultraviolet (UV) light comprising a color balancer in an amount effective to reduce the overall color shift of the plastic due to exposure to UV light.Type: GrantFiled: September 8, 1986Date of Patent: May 10, 1988Assignee: The Dow Chemical CompanyInventors: James A. Yanacek, Robert J. Donald, Christopher S. Murphy
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Patent number: 4740537Abstract: Disclosed is a composition that is polymerizable by contacting it with an olefin metathesis catalyst comprising dicyclopentadiene, red phosphorus, and a brominated aromatic compound selected from the group consisting of decabromodiphenyl oxide, N,N'-ethylene-bis-(tetrabromophthalimide), brominated polystyrene, brominated polyphenylene oxide, tetradecabromodiphenoxy benzene, tetrabromoxylene, and octabromodiphenyl oxide.Type: GrantFiled: May 9, 1986Date of Patent: April 26, 1988Assignee: Hercules IncorporatedInventor: Paul A. Silver
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Patent number: 4722809Abstract: Flame-retardant blends are provided comprising a particular type of aromatic-aliphatic copolyamide and a flame-retardant amount of an oligomeric or polymeric halogenated aromatic polycarbonate.The blends are characterized by being transparent and meeting the V-O rating when tested in accordance with the Underwriters Laboratories UL-94 vertical burn test.Type: GrantFiled: September 22, 1986Date of Patent: February 2, 1988Assignee: The Dow Chemical CompanyInventors: Philip S. Andrews, Karl W. Rausch, Jr., Kemal Onder
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Patent number: 4713407Abstract: The present invention relates to a polyester resin composition, and more particularly, to a polyester resin composition having excellent properties in flame retardance, mechanical property, heat resistance and moldability. Said polyester resin composition comprises 100 parts by weight of polyester resin (A), from 20 to 70 parts by weight of glass fibers (B), from 2 to 8 parts by weight of a crystallization-accelerating agent (C), from 10 to 25 parts by weight of flame retardant (D) and, as a auxiliary flame retardant (E), from 1 to 10 parts by weight of an antimony compound and from 2 to 12 parts by weight of a boric acid salt.Type: GrantFiled: July 7, 1986Date of Patent: December 15, 1987Assignee: Idemitsu Petrochemical Co., Ltd.Inventors: Philip E. Bailey, Gordon E. Pickett, Manfred Luttinger, Takashi Umeda
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Patent number: 4710317Abstract: A flame retardant polyolefin resin composition which, when molded, affords a molded product having highly flame retardant properties, no dripping properties, a smooth surface and an excellent appearance and superior resistances to heavy metal deterioration, heat deterioration and weather is provided, which composition consists of (A) 5-60% by weight of a halogen-containing flame retardant, (B) 100-10% by weight of antimony trioxide based on the weight of the halogen-containing flame retardant, (C) 0.5-15% by weight of a crosslinking agent, (D) 0.05-5% by weight of a specified thiophosphite, and (E) the balance % by weight of a polyolefin resin, the total of the quantities of (A), (B), (C), (D) and (E) being 100% by weight. If necessary, a processing aid may be further added to the above flame retardant polyolefin resin composition.Type: GrantFiled: May 20, 1986Date of Patent: December 1, 1987Assignee: Chisso CorporationInventors: Nobuchika Tabata, Shohji Fukumitsu
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Patent number: 4696966Abstract: A fire retardant, impact resistant polyamide composition containing 1 to 25% of a rubbery copolymer containing functional groups derived from maleic, fumaric, norbornadiene and succinic anhydrides or an alicyclic carboxylic acid or functional derivative thereof having a cis-form double bond in the ring, 10 to 30% of a halogenated polymer having a weight average molecular weight greater than 5,000 and a synergist for the halogenated fire retardant. The composition provides a good level of impact strength in combination with a high level of fire retardancy. A particularly good balance of properties can be obtained from compositions containing fillers, especially glass fibres.Type: GrantFiled: May 1, 1986Date of Patent: September 29, 1987Assignee: Imperial Chemical Industries PLCInventor: Ian G. Williams
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Patent number: 4666947Abstract: Compositions based on ethylene/vinylacetate copolymers provided with self-extinguishing properties and suitable for the preparation of foamed materials, comprising for 100 parts by weight of the EVA copolymers:from 5 to 10 parts by weight of at least a bromodiphenylether containing at least 3 bromine atoms;from 2 to 4 parts by weight of a metal oxide selected from antimony, bismuth and tungsten oxides; andfrom 0.1 to 1 part by weight of a compound having general formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, equal or different from each other, can by hydrogen, chlorine, bromine, aliphatic hydrocarbon radicals containing from 1 to 6 carbon atoms, cyclohexyl or phenyl radicals, the nitro group or the --CN group.R.sub.5, R.sub.6, equal or different, can be hydrogen, chlorine, bromine, aliphatic hydrocarbon radicals containing from 1 to 3 carbon atoms, or alkoxy radicals containing 1 to 4 carbon atoms or ##STR2## groups, R.sub.7 being an alkyl radical containing from 1 to 3 carbon atoms.Type: GrantFiled: November 13, 1984Date of Patent: May 19, 1987Assignee: Montepolimeri S.p.A.Inventors: Corrado Brichta, Annibale Vezzoli, Pietro Origgi
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Patent number: 4564650Abstract: The present invention is a flame retardant composition comprising from 5 to 20 weight percent of a homopolymer of a monomer having the formula: ##STR1## wherein n=0 or 1, X is bromine or chlorine and R is hydrogen or methyl. The polymer has a molecular weight between 1.times.10.sup.3 and 10.times.10.sup.6, and preferably 5.times.10.sup.3 to 5.times.10.sup.6. The molecular weight is determined by gel permeation chromotography in tetrahydrofuran. The composition contains from 80 to 95 weight percent of a polyamide having an excess of polymer chain ends terminated with amine groups. There can be from 0 to 10, preferably 1 to 10, and more preferably 2 to 6 weight percent of antimony oxide. Optionally, the composition can contain an impact modifier and/or a filler.Type: GrantFiled: December 22, 1983Date of Patent: January 14, 1986Assignee: Allied CorporationInventors: Arie Hochberg, Charles D. Mason
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Patent number: 4532278Abstract: Fibers and fabrics formed from polypropylene as well as other polyolefins and high polymers, are rendered flame retardant by the addition of a bromophenyl compound having the following formula: ##STR1## wherein n is 0 or 1; X is bromine, hydrogen, hydroxyl, or alkyl; and wherein the alkyl portion of these groups may contain hydroxyl and/or oxygen; and wherein the alkyl is preferably a lower alkyl (C.sub.1 -C.sub.4); and wherein there is at least one bromine for each phenyl radical; and a tris (hydroxybenzyl) isocyanurate, particularly tris (3,5-di-t-butyl-4-hydroxybenzyl) isocyanurate. The composition of formula (I) and the isocyanurate are blended into the polymer in the forming operations and the polymer blend is thermally extruded to form a fiber which fiber exhibits exceptionally high flame retardancy, as well as a good white appearance upon extrusion so as to be readily dyed without grey overtones.Type: GrantFiled: April 30, 1982Date of Patent: July 30, 1985Inventor: Henry Hancock
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Patent number: 4456720Abstract: There is provided a novel flame retardant system or additive which when incorporated in a polymer, such as polyphenylene ether resin compositons, produces novel flame resistant non-discolored polyphenylene ether resin compositions. The flame retardant system comprises a composition of stable halogenated organic compounds and boron containing salts or esters which are stable at 250.degree.-300.degree. C.Type: GrantFiled: August 29, 1983Date of Patent: June 26, 1984Assignee: General Electric CompanyInventors: Visvaldis Abolins, Fred F. Holub
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Patent number: 4447572Abstract: Polyamides, flame retarded with a halogenated derivative and blended with a polymer blend resin being at least partially incompatible and having a lower melt viscosity than the polyamide, to improve the arc tracking resistance of the polyamide, are disclosed. The polyamides are particularly useful in the manufacture of flame retarded electrical components.Type: GrantFiled: November 6, 1981Date of Patent: May 8, 1984Assignee: Occidental Chemical CorporationInventors: Daniel J. Scharf, Charles S. Ilardo, Willis T. Schwartz, Gideon Salee