Three Oxygen Atoms Are Directly Bonded To Three Nuclear Carbon Atoms Of The Nitrogen Ring, E.g., (iso) Cyanurate, Etc. Patents (Class 524/101)
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Patent number: 4767811Abstract: Thermoplastic polyamide molding materials having reduced water uptake are obtained by the addition of 0.3-15% by weight, based on the polyamide, of an epoxide compound containing at least one oxirane group of general formula I ##STR1## in which R.sub.1 is hydrogen, alkyl, aralkyl or aryl, and R.sub.2 is hydrogen, alkyl, dialkyl, aryl, or a group of general formula IIR.sub.3 --X--CH.sub.2 -- (II)in which X can be oxygen, sulfur or substituted nitrogen and R.sub.3 can be a substituted or non-substituted aromatic, cycloaliphatic, araliphatic or aliphatic group which can also contain further oxirane groups and be interrupted by other groupings.Glycidyl ethers are particularly preferred epoxide compounds. The molding materials of the invention are suitable especially for use in the construction of motor vehicles, instruments, apparatus or machines.Type: GrantFiled: August 5, 1987Date of Patent: August 30, 1988Assignee: Ems-Inventa A.G.Inventors: Hans D. Torre, Manfred Hoppe
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Patent number: 4762879Abstract: Single-component diorganopolysiloxane compositions which are storage-stable in the absence of atmospheric moisture and which crosslink into silicone elastomeric state in the presence of moisture, are comprised of an alkoxy-terminated diorganopolysiloxane, a functionalization catalyst containing a primary or secondary amine group, a tin condensation catalyst, a filler material, and an effective stabilizing amount of an isocyanurate of the formula: ##STR1## wherein W is --CH.sub.2).sub.n N.dbd.C.dbd.O and n ranges from 1 to 12.Type: GrantFiled: April 28, 1987Date of Patent: August 9, 1988Assignee: Rhone-Poulenc ChimieInventors: Michel Letoffe, Pierre-Michel Peccoux
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Patent number: 4760107Abstract: A resinous composition comprising:(i) at least one aromatic polycarbonate resin;(ii) at least one polyester resin; and(iii) a minor amount of a mixture of at least one polyol and at least one epoxide.Type: GrantFiled: December 22, 1986Date of Patent: July 26, 1988Assignee: General Electric CompanyInventor: Linda H. Nelson
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Patent number: 4758614Abstract: Substituted amino carbamate derivatives corresponding to the formula ##STR1## are effective in stabilizing organic materials against oxidative, thermal and actinic degradation, said derivatives being particularly effective as color improvers and process stabilizers in organic materials containing phenolic antioxidants and/or metal salts of fatty acids and/or hindered amine light stabilizers and/or organic phosphorus compounds; and certain of said derivatives as new compounds.Type: GrantFiled: April 25, 1986Date of Patent: July 19, 1988Assignee: Ciba-Geigy CorporationInventors: Stephen D. Pastor, Edward T. Hessell, Ramanathan Ravichandran
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Patent number: 4757102Abstract: Various substituted aminoxy alkylamine derivatives are effective in stabilizing organic materials against oxidative, thermal and actinic degradation, said derivatives being particularly effective as color improvers and process stabilizers in organic materials containing phenolic antioxidants and/or metal salts of fatty acids and/or hindered amine light stabilizers and/or organic phosphorus compounds; and certain of said derivatives as new compounds.Type: GrantFiled: May 12, 1986Date of Patent: July 12, 1988Assignee: Ciba-Geigy CorporationInventors: Ramanathan Ravichandran, Stephen D. Pastor, Thomas E. Snead
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Patent number: 4753970Abstract: Disclosed herein is a novel fire-retardant polyolefin composition comprising a polyolefin, an organohalogenous fire retardant and a carbonic acid ester represented by the formula (I): ##STR1## wherein R and R' respectively represent an alkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group, an aralkyl group or an aryl group, Z represents a residual group of an aliphatic diol, an alicyclic diol, an aromatic diol, a diphenyl ketone diol, or a diphenylsulfone diol and n is 0 or 1.Type: GrantFiled: August 19, 1986Date of Patent: June 28, 1988Assignee: Nippon Kasei Chemical Co., Ltd.Inventors: Hiroyasu Saito, Shun Suzuki, Fumio Tanimoto, Hisao Kitano
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Patent number: 4749733Abstract: Compounds of the formulae ##STR1## are useful stabilizers of organic polymeric materials which are subject to thermal, oxidative and/or actinic degradation.Type: GrantFiled: December 12, 1986Date of Patent: June 7, 1988Assignee: Ciba-Geigy CorporationInventors: Ramanathan Ravichandran, Raymond Seltzer
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Patent number: 4748242Abstract: The present invention is directed to a process for the production of polyisocyanates containing isocyanurate groups by trimerizing a mixture of aliphatic-cycloaliphatic diisocyanates having a sterically unhindered isocyanate group bound to a primary aliphatic carbon atom and a sterically hindered isocyanate group bound to a tertiary carbon atom which forms a part of a cycloaliphatic ring system and 1,6-diisocyanatohexane. The present invention is also directed to the polyisocyanates containing isocyanurate groups produced according to this process and to their use, optionally in blocked form, as an isocyanate component in the production of polyisocyanate polyaddition products, preferably polyurethane lacquers.Type: GrantFiled: November 12, 1986Date of Patent: May 31, 1988Assignee: Bayer AktiengesellschaftInventors: Reinhard Halpaap, Josef Pedain, Hans-Joachim Kreuder, Gerhard Klein, Dieter Arlt
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Patent number: 4731396Abstract: Stabilized acetal polymer molding compositions are formed by first preparing an intimate dispersion of an amidine stabilizer in a carrier resin comprising an ionic polymer, i.e. an "ionomer", and compounding the dispersion with the acetal polymer. The resulting composition is found in many cases to have improved stability over compositions prepared by adding the amidine compound in an undispersed form.Type: GrantFiled: January 15, 1986Date of Patent: March 15, 1988Assignee: Celanese CorporationInventors: Andrew B. Auerbach, Thomas C. Yu
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Patent number: 4731397Abstract: Stabilized acetal polymer molding compositions are formed by first preparing an intimate dispersion of cyanoguanidine or melamine in a carrier resin, e.g. a non-ionic carrier resin such as an ethylene/ethyl acrylate copolymer, and compounding the dispersion with the acetal polymer. The resulting composition is found in many cases to have improved thermal stability over compositions prepared by adding the cyanoguanidine or melamine as pure crystals.Type: GrantFiled: September 20, 1985Date of Patent: March 15, 1988Assignee: Celanese CorporationInventors: Andrew B. Auerbach, Tom C. Yu
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Patent number: 4727102Abstract: Polyolefins which are made self-extinguishing by means of flame-retarding compositions comprising ammonium polyphosphate, melamine cyanurate and a hydroxyalkyl-derivative of isocyanuric acid at least partially in the form of a homopolymer.Type: GrantFiled: July 15, 1985Date of Patent: February 23, 1988Assignee: V.A.M.P. S.r.l.Inventor: Luciano Scarso
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Patent number: 4727101Abstract: A carbonate polymer composition comprising a carbonate polymer such as a bisphenol-A homopolycarbonate which carbonate polymer contains an amount of a salt represented by the formula: ##STR1## wherein Ar is an aromatic group, R is a monovalent organic moiety, or Ar and R collectively are a divalent aromatic moiety M is a cation, and n is a number corresponding to the valence of M and an amount of a free aromatic sulfimide, which carbonate polymer composition resists combustion upon exposure to an ignition source, exhibits good optical properties, and exhibits molecular weight stability. Optionally, a halogenated organic compound may be added to the composition.Type: GrantFiled: June 26, 1986Date of Patent: February 23, 1988Assignee: The Dow Chemical CompanyInventors: Samuel A. Ogoe, Hani Farah, Kevin F. Dick, Grace M. Willis
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Patent number: 4727103Abstract: Isocyanurate esters of carboxyalkylthioalkanoesterphenols useful in the stabilization of organic materials normally susceptible to oxidative degradation are prepared by reacting an appropriate isocyanurate trithiol, which is a selected tris-mercapto alkanoic acid ester of tris-(2-hydroxyethyl) isocyanurate with an appropriate alkenyl compound, which is a selected 4-hydroxy-(mono- or di-alkyl)phenyl alkyl alkenoate. In a preferred embodiment, the ester is 1,3,5-tris [( 3,5-di-tert-butyl-4-hydroxyphenyl)-(3-propyl) oxycarbonylethylthiopropionyloxyethyl] isocyanurate.Type: GrantFiled: June 29, 1987Date of Patent: February 23, 1988Assignee: Mallinckrodt, Inc.Inventor: Neil Dunski
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Patent number: 4722806Abstract: A branched chain polyalkylenepolyamine ("PAPA") amine having plural amine groups including a secondary amine group intermediate terminal primary amine groups and having at least two carbon atoms between each amine group, is reductively alkylated with a ketone to provide a PAPA alkylated only at an unhindered primary amine group. A preselected degree of steric hindrance at amine groups near each end of the chain enables cyclization by the `ketoform synthesis` by reaction with a ketone in such a manner as to form a polysubstituted piperazinone ("PSP") ring which includes N atoms of proximate primary and secondary amine groups of the alkylated PAPA. The PSP so formed may then be reacted with a reactive triazine ring so that a PSP substituent is linked to the triazine ring through a single N atom and at least two C atoms, to form a 2-oxo-piperazinyl-triazine ("PIP-T"). Oligomers of the PIP-T may be prepared.Type: GrantFiled: April 9, 1985Date of Patent: February 2, 1988Assignee: The B. F. Goodrich CompanyInventors: John T. Lai, Pyong N. Son
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Patent number: 4722955Abstract: Carbonate polymer compositions exhibit good thermal stability and good non-yellowing characteristics. Compositions comprise a carbonate polymer (e.g., a homopolycarbonate of bisphenol A), a heat stabilizing phosphorous compound (e.g., an organo-phosphite or an organo-phosphonite), an epoxy compound containing internal acyclic ether linkages (e.g., a diglycidyl ether of a polypropylene glycol), and optionally a hindered phenol. Such compositions retain desirable properties upon exposure to hot and humid conditions.Type: GrantFiled: April 15, 1985Date of Patent: February 2, 1988Assignee: The Dow Chemical CompanyInventor: Kevin F. Dick
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Patent number: 4720517Abstract: N-hydroxyiminodiacetic and dipropionic acids and esters thereof corresponding to the formula ##STR1## are effective in stabilizing various organic materials against oxidative, thermal and actinic degradation, said derivatives being particularly effective as color improvers and process stabilizers in synthetic polymers containing phenolic antioxidants and/or metal salts of fatty acids and as stabilizers in lubricants.Type: GrantFiled: November 24, 1986Date of Patent: January 19, 1988Assignee: Ciba-Geigy CorporationInventors: Ramanathan Ravichandran, Thomas E. Snead
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Patent number: 4703073Abstract: Alkylated N,N-dibenzylhydroxylamine derivatives are effective in stabilizing polyolefin compositions containing a stabilizer or mixture of stabilizers selected from the group consisting of the phenolic antioxidants, the hindered amine light stabilizers, the alkylated hydroxybenzoate light stabilizers, the ultraviolet light absorbers, the organic phosphorus compounds, the alkaline metal salts of fatty acids and the thiosyner-gists, against degradation upon high temperature extrusion, exposure to the combustion products of natural gas, gamma irradiation or upon storage for extended periods.Type: GrantFiled: September 15, 1986Date of Patent: October 27, 1987Assignee: Ciba-Geigy CorporationInventors: Roland A. E. Winter, Ramanathan Ravichandran, Raymond Seltzer
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Patent number: 4699941Abstract: Hot melt pressure sensitive adhesive prepared from (a) a rubbery block copolymer containing a rubbery polyisoprene midblock portion and a plurality of crystalline poly(vinylarene) endblocks; (b) a tackifying resin compatible with the midblock portion and (c) poly(alkyloxazoline); and (d) an antioxidant. These adhesives are characterized by exceptional elastic memory, high tensile strength and excellent peel adhesion and, as such, are especially suited for use in elasticized bands for disposable items.Type: GrantFiled: August 12, 1985Date of Patent: October 13, 1987Assignee: National Starch and Chemical CorporationInventor: Catherine E. Salerno
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Patent number: 4699942Abstract: Compositions suitable for molding are produced by examining a (1) polyethylene terephthalate polyester, (2) a low molecular weight polyethylene mold release agent (3) talc as nucleating agent, (4) carbon black, (5) a hindered phenolic antioxidant and (6) other optional ingredients such as reinforcing glass fibers.Type: GrantFiled: August 30, 1985Date of Patent: October 13, 1987Assignee: Eastman Kodak Co.Inventors: James C. Weaver, Wayne P. Pruett
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Patent number: 4698424Abstract: The present invention relates to isocyanato-isocyanurates corresponding to the formula ##STR1## in which X.sub.1, X.sub.2 and X.sub.3 may be the same or different and represent radicals corresponding to the formula ##STR2## wherein R.sup.1 and R.sup.2 may be the same or different and represent hydrogen or C.sub.1 -C.sub.12 alkyl groups, and p is a whole or (on a statistical average) fractional number of from 1 to 5.The present invention also relates to a process for producing these isocyanato-isocyanurates and additionally relates to the use of the new isocyanato-isocyanurates, optionally blocked by blocking agents for isocyanate groups, as the isocyanate component in the produciton of isocyanate polyaddition products, preferably polyurethane lacquers.Type: GrantFiled: October 31, 1984Date of Patent: October 6, 1987Assignee: Bayer AktiengesellschaftInventors: Theodor Engbert, Hartmut Knofel, Gerhard Wegener
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Patent number: 4689361Abstract: Coating powders for the melt film coating method, based on polyamides and adhesion improving additives. The polyamides are aliphatic homo- and/or copolyamides having at least six carbon atoms containing functional groups consisting of at least 80% of primary, secondary, or mixtures of primary and secondary amino groups. As the adhesion improving additive there is added from 0.1 to 10% by weight referred to the polyamides of an isophoronediisocyanate capped with lactams, an isophoronediisocyanate capped with acetonoxime or an isophoronediisocyanate capped with an oligomer of acetonoxime.Type: GrantFiled: March 20, 1986Date of Patent: August 25, 1987Assignee: Huls AktiengesellschaftInventors: Salih Mumcu, Rainer Feldmann
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Patent number: 4680325Abstract: Isocyanurate esters of thioalkanoamidophenols useful in the stabilization of organic materials normally susceptible to oxidative degradation are prepared by reacting an appropriate isocyanurate trithiol, which is a selected tris-mercapto alkanoic acid ester of tris-(2-hydroxyethyl) isocyanurate with an appropriate alkenyl compound, which is a selected N-alkenyl[4-amino-(mono- or dialkyl)phenol] or, where the alkano moiety is a sole methylene group, by reaction of tris-(2-hydroxyethyl) isocyanurate with an appropriate [mercapto-N-(mono- or di-alkyl]-4-hydroxyphenylalkanamide alkenoic] acid. In a preferred embodiment, the ester is 1,3,5-tris{2-hydroxy ethyl-[3-mercapto-(3',5'-di-tert-butyl-4'-hydroxypropionanilide)]propionat e}isocyanurate.Type: GrantFiled: February 10, 1986Date of Patent: July 14, 1987Assignee: Mallinckrodt, Inc.Inventors: Neil Dunski, Ali A. Bazzi, Henry J. Buehler
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Patent number: 4678826Abstract: Substituted-(aminoxy)-pyrrolidine-2,5-dione derivatives of the formula ##STR1## are prepared by the reaction of the appropriate maleimide and hydroxylamine compounds and are useful as stabilizers for organic polymers.Type: GrantFiled: January 24, 1986Date of Patent: July 7, 1987Assignee: Ciba-Geigy CorporationInventors: Stephen D. Pastor, Edward T. Hessell
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Patent number: 4677028Abstract: The invention provides for a thixotropic coating composition comprising (1) a binder and (2) a sag control agent which is the reaction product of (a) an isocyanurate-trimer from a diisocyanate containing 3 to 20 carbon atoms and (b) an amine containing at least one primary amino group, the coating composition containing 0.1 to 30 percent by weight of the sag control agent. The invention also relates to a process for coating a substrate using said coating composition and to the coated substrate thus obtained.Type: GrantFiled: February 20, 1986Date of Patent: June 30, 1987Assignee: Akzo N.V.Inventors: Auke Heeringa, Johannes P. H. Juffermans, Bart Kaster
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Patent number: 4668721Abstract: N,N-Dibenzylhydroxylamine and other selected hydroxylamine derivatives are effective in stabilizing polyolefin compositions containing a stabilizer or mixture of stabilizers selected from the group consisting of the phenolic antioxidants, the hindered amine light stabilizers, the ultraviolet light absorbers, the organic phosphorus compounds, the alkaline metal salts of fatty acids and the thiosynergists, against degradation upon high temperature extrusion, exposure to the combustion products of natural gas, gamma irradiation or upon storage for extended periods.Type: GrantFiled: February 3, 1986Date of Patent: May 26, 1987Assignee: Ciba-Geigy CorporationInventors: Raymond Seltzer, Ambelal R. Patel, Peter W. Stewart, Charlene White
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Patent number: 4666962Abstract: Substituted aminoxy propanoate derivatives corresponding to the formula ##STR1## are effective in stabilizing organic materials against oxidative, thermal and actinic degradation, said derivatives being particularly effective as color improvers and process stabilizers in organic materials containing phenolic antioxidants and/or metal salts of fatty acids and/or hindered amine light stabilizers and/or organic phosphorus compounds; and certain of said derivatives as new compounds.Type: GrantFiled: April 4, 1986Date of Patent: May 19, 1987Assignee: Ciba-Geigy CorporationInventors: Ramanathan Ravichandran, Thomas E. Snead
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Patent number: 4666963Abstract: Substituted aminoxy succinate derivatives of the formula ##STR1## are effective in stabilizing organic materials against oxidative, thermal and actinic degradation, said derivatives being particularly effective as color improvers and process stabilizers in organic materials containing phenolic antioxidants and/or metal salts of fatty acids and/or hindered amine light stabilizers and/or organic phosphorus compounds.Type: GrantFiled: June 24, 1986Date of Patent: May 19, 1987Assignee: Ciba-Geigy CorporationInventors: Ramanathan Ravichandran, Thomas E. Snead
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Patent number: 4663372Abstract: A flame-retarded polyamide composition comprising a polyamide and a triazine addition compound consisting essentially of one mole of a triazine derivative having the formula (I): ##STR1## in which R is divalent hydrocarbon residue containing 1-12 carbon atoms, and one or two moles of one or two compounds selected from the group consisting of cyanuric acid and isocyanuric acid.Type: GrantFiled: November 1, 1985Date of Patent: May 5, 1987Assignee: UBE Industries Ltd.Inventors: Hidemasa Okamoto, Mitsuo Yamanaka, Kazuyoshi Fujii
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Patent number: 4663373Abstract: Substituted aminoxy silane derivatives corresponding to the formula ##STR1## are effective in stabilizing organic materials against oxidative, thermal and actinic degradation, said derivatives being particularly effective as color improvers and process stabilizers in organic materials containing phenolic antioxidants and/or metal salts of fatty acids and/or hindered amine light stabilizers and/or organic phosphorus compounds.Type: GrantFiled: May 1, 1986Date of Patent: May 5, 1987Assignee: Ciba-Geigy CorporationInventors: Ramanathan Ravichandran, Thomas E. Snead
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Patent number: 4623686Abstract: The invention relates to novel compositions for coating purposes comprising(A) polyvinyl plastisols,(B) surface modified, finely divided, stabilized polyisocyanates with retarded reactivity, in which 0.1 to 25 equivalents-% of the isocyanate groups of the unstabilized polyisocyanate have been deactivated on the surface, preferably by a reaction with polyamines, hydrazine, alkylhydrazines, polyhydrazide compounds and/or selected amidine and/or guanidine compounds; and(C) plasticizers and/or lightly branched, relatively high molecular weight polyhydroxyl compounds having melting points below 60.degree. C. and compatible with PVC plastisol.The invention also relates to the use of these storage stable but heat curable mixtures as primers for PVC coatings on plastics, foils, textile sheet products or filaments and as primer coats for flocking.Type: GrantFiled: January 24, 1985Date of Patent: November 18, 1986Assignee: Bayer AktiengesellschaftInventors: Helmut Hurnik, Gerhard Grogler, Heinrich Hess, Richard Kopp
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Patent number: 4607068Abstract: Radiation curable coating compositions, and especially electron beam-curable coating compositions, are disclosed in which magnetizable particles are dispersed in a liquid vehicle comprising a polyethylenically unsaturated polyurethane oligomer which includes a polycarbonate diol, and from 5% to 50%, based on the total weight of unsaturated material, of a polyethylenically unsaturated isocyanurate, such as a triacrylate of tris(2-hydroxyethyl) isocyanurate.Type: GrantFiled: June 3, 1985Date of Patent: August 19, 1986Assignee: DeSoto, Inc.Inventor: Robert E. Ansel
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Patent number: 4606853Abstract: A fire retardant polyamide composition comprising at least 35% by weight of polyamide having a molecular weight of at least 3000, at least 3.5% but preferably not more than 10% by weight of the condensation product of 2 moles perchlorocyclopentadiene and 1 mole of 1,5-cyclooctadiene, at least 2%, preferably at least 4% desirably not more than 10% by weight of melamine, a salt of melamine or an organic derivative of melamine and at least 0.5%, but preferably not more than 5.0% of at least one oxide selected from iron oxide and tin oxide, wherein the weight ratio of chlorinated compound to oxide is between 1:1 and 10:1 preferably between 2:1 and 6:1 and the constituents of the composition total 100%. The composition provides improved burning performance in the UL94 test in that dripping is prevented. The composition also provides acceptable burning performance at a lower concentration of total additives than when halogenated fire retardant/synergistic oxide combinations are used.Type: GrantFiled: July 24, 1984Date of Patent: August 19, 1986Assignee: Imperial Chemical Industries PLCInventor: Ian G. Williams
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Patent number: 4605596Abstract: An additive for coating compositions which is a blend of(A) 20-50% by weight of a polyisocyanate of one of the following formulas: ##STR1## where R.sup.1 is (CH.sub.2).sub.6, (B) 1-15% by weight of an ester of a polyalkylene glycol alkyl alkylate, an alkyl phthalate or an alkyl aromatic phthalate(C) 1-10% by weight of a blend of ultraviolet light stabilizers and(D) 25-78% by weight of organic solvent; the additive can be added to acrylic lacquers, nitrocellulose lacquers, acrylic-alkyd enamels and acrylic polyurethane enamels to provide flexible finishes for flexible substrates used in automobile and truck bodies.Type: GrantFiled: December 19, 1983Date of Patent: August 12, 1986Assignee: E. I. Du Pont de Nemours and CompanyInventor: Grant C. Fry
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Patent number: 4600734Abstract: Rubber mixtures containing salts of cyanuric acid or cyanuric acid derivatives are suitable for preventive fire protection.Type: GrantFiled: January 14, 1985Date of Patent: July 15, 1986Assignee: Bayer AktiengesellschaftInventors: Wulf von Bonin, Gerd Matenar
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Patent number: 4595720Abstract: The processing of elastomer gums, which can be natural rubber or synthetic elastomers such as copolymers of vinylidene fluoride and hexafluoropropylene, are improved by incorporating in said gum, along with conventional chemical and compounding ingredients, cyanuric acid or isocyanurate or cyanurate derivatives thereof to improve the processing of such gums, for example, to improve the extrudability thereof or the release of molded articles thereof from the mold.Type: GrantFiled: June 26, 1985Date of Patent: June 17, 1986Assignee: Minnesota Mining and Manufacturing CompanyInventors: David A. Stivers, Richard A. Guenthner
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Patent number: 4594376Abstract: A propylene polymer composition containing (i) 100 parts by weight of a polypropylene and/or a propylene-ethylene copolymer and (ii) 0.05 to 2 parts by weight of triallyl(iso)cyanurate and/or diallyl(iso)phthalate, or (i) 100 parts by weight of a polypropylene and/or a propylene-ethylene copolymer, (ii) 0.01 to 0.5 part by weight of triallyl(iso)cyanurate and/or diallyl(iso)phthalate, and (iii) 0.005 to 0.2 part by weight of an organic peroxide.This propylene composition has excellent resistance against high-energy radiation without impairing the desired properties of the propylene polymer per se.Type: GrantFiled: September 7, 1984Date of Patent: June 10, 1986Assignee: Showa Denko Kabushiki KaishaInventor: Yoshinori Hamada
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Patent number: 4594377Abstract: Novel modified polyetherimide esters are prepared from diols, dicarboxylic acids and a combination of polyoxyalkylene diimide diacids and dimer acid. These compositions have many excellent properties which make them particularly useful for extrusion and molding applications.Type: GrantFiled: June 3, 1985Date of Patent: June 10, 1986Assignee: General Electric CompanyInventor: Russell J. McCready
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Patent number: 4590231Abstract: N,N-Dibenzylhydroxylamine and other selected hydroxylamine derivatives are effective in stabilizing polyolefin compositions containing a stabilizer or mixture of stabilizers selected from the group consisting of the phenolic antioxidants, the hindered amine light stabilizers, the ultraviolet light absorbers, the organic phosphorus compounds, the alkaline metal salts of fatty acids and the thiosynergists, against degradation upon high temperature extrusion, exposure to the combustion products of natural gas, gamma irradiation or upon storage for extended periods.Type: GrantFiled: July 23, 1984Date of Patent: May 20, 1986Assignee: Ciba-Geigy CorporationInventors: Raymond Seltzer, Ambelal R. Patel, Peter W. Stewart, Charlene White
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Patent number: 4584146Abstract: Tetrakis(2,6-di-t-butyl-4-substituted phenyl)4,4'-substitutedbisphenyl diphosphites that are prepared from a hindered phenol and a non-hindered bisphenol have been found to be excellent stabilizers for organic materials subject to degradation, and form even more effective combinations with hydroxyphenylalkyleneyl isocyanurates, substantially and synergistically enhancing the stabilizing efficiency of the isocyanurate.Type: GrantFiled: October 20, 1983Date of Patent: April 22, 1986Assignee: The B. F. Goodrich CompanyInventor: Dwight W. Chasar
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Patent number: 4581397Abstract: A molding composition comprising a polycarbonate resin and an impact modifier containing an acrylate or a methacrylate functionality is imparted improved processability and freedom from splay upon the admixing of a certain stabilizer therewith.Type: GrantFiled: September 29, 1983Date of Patent: April 8, 1986Assignee: Mobay CorporationInventor: Mark W. Witman
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Patent number: 4579894Abstract: Self-extinguishing compositions comprising:(1) from 35.5 to 87% by weight of at least a polyolefin(2) from 5 to 20% by weight of an ammonium polyphosphate(3) from 2 to 20% by weight of polycarbonylpiperazine(4) from 3 to 10% by weight of melamine phosphate(5) from 0.5 to 3% by weight of titanium dioxide(6) from 0 to 1.5% by weight of a compound of formula R--SH wherein R is a radical of imidazole or of uracil.Type: GrantFiled: May 10, 1984Date of Patent: April 1, 1986Assignee: Montedison S.p.A.Inventors: Guido Bertelli, Renato Locatelli
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Patent number: 4578408Abstract: Disclosed is a photodiscoloration-resistant polyester resin composition comprising 100 parts by weight of a polyester resin and, incorporated therein, (1) 3 to 50 parts by weight of a brominated cyanuric acid ester compound; and (2) a benzotriazole-type ultraviolet stabilizer in an amount of up to 5 parts by weight per 100 parts by weight of the polyester resin. This composition is excellent in the flame retardance and photodiscoloration resistance, and bleeding of the contained flame retardant does not occur in this composition.Type: GrantFiled: August 6, 1982Date of Patent: March 25, 1986Assignee: Polyplastics Co., Ltd.Inventors: Masatoshi Matsuoka, Yukio Ikenaga, Osamu Matsuno
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Patent number: 4576983Abstract: District heating pipes for potable water contain a polymer composition which comprises a butene-1 homopolymer, sterically hindered phenolic antioxidant, lauryl-stearyl thiodipropionate, nucleating agent, mineral filler coated with acid acceptor and pigment.Type: GrantFiled: March 27, 1985Date of Patent: March 18, 1986Assignee: Shell Oil CompanyInventors: Ananda M. Chatterjee, Earl E. Hayden
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Patent number: 4569959Abstract: Isocyanurate esters of thioalkanoamidophenols useful in the stabilization of organic materials normally susceptible to oxidative degradation are prepared by reacting an appropriate isocyanurate trithiol, which is a selected tris-mercapto alkanoic acid ester of tris-(2-hydroxyethyl) isocyanurate with an appropriate alkenyl compound, which is a selected N-alkenoyl[4-amino-(mono- or dialkyl)phenol] or, where the alkano moiety is a sole methylene group, by reaction of tris-(2-hydroxyethyl) isocyanurate with an appropriate [mercapto-N-(mono- or di-alkyl-4-hydroxyphenylalkanamide alkenoic] acid. In a preferred embodiment, the ester is 1,3,5-tris{2-hydroxy ethyl-[3-mercapto-(3',5'-di tert-butyl-4'-hydroxypropionanilide)]propionate}isocyanurate.Type: GrantFiled: January 17, 1985Date of Patent: February 11, 1986Assignee: Mallinckrodt, Inc.Inventors: Neil Dunski, Ali A. Bazzi, Henry J. Buehler
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Patent number: 4569973Abstract: Novel copolyetherester elastomer molding compositions are prepared from diols, diacids, poly(alkylene ether) glycol and caprolactone or polycaprolactone.Type: GrantFiled: August 24, 1984Date of Patent: February 11, 1986Assignee: General Electric CompanyInventors: John A. Tyrell, Victor Mark
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Patent number: 4569736Abstract: YMedical instruments, e.g., syringes, which can be sterilized by gamma irradiation and which are made of polyolefin resins (preferably a polypropylene polymer) which are resistant to gamma irradiation. The polyolefin is compounded with a specific hindered amine and a specific phenol or its phosphorous ester, each in an amount of from 0.01 to 1 part by weight per 100 parts of the polyolefin.Type: GrantFiled: March 21, 1984Date of Patent: February 11, 1986Assignee: Terumo Kabushiki KaishaInventors: Kimiho Kosegaki, Ryushiro Takeshita, Kazuhiko Kobayashi
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Patent number: 4555550Abstract: Improved molding compositions based on high-molecular polyether ester amides are obtained by heating at 180.degree.-250.degree. C. a melt containing a mixture ofA. a polyether ester amide having a relative solution viscosity .eta..sub.rel of at least 1.5; andB. 0.05-1.5 parts by weight, based on 100 parts by weight of the molding composition, of a cyclic, trimerized isophorone diisocyanate or an oligomer thereof having a degree of oligomerization of 2-5 and an isocyanate functionality of 3-7.Type: GrantFiled: February 25, 1985Date of Patent: November 26, 1985Assignee: Chemische Werke Huels, A.G.Inventors: Michael Droescher, Salih Mumcu, Klaus Burzin, Christian Gerth, Horst Heuer
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Patent number: 4548971Abstract: Polymer compositions and method for improving processability of compositions of normally solid polymers of arylene sulfides by the addition of at least one of cyanurate and isocyanurate compounds in an amount effective to improve the processability of the composition. In a preferred embodiment the amount of cyanurate and isocyanurate in the total composition is in the range of about 0.1 to about 10 weight percent. The invention is applicable to improving the processing characteristics and other properties of arylene sulfide polymers and filled arylene sulfide polymers.Type: GrantFiled: July 30, 1984Date of Patent: October 22, 1985Assignee: Phillips Petroleum CompanyInventors: Robert J. Martinovich, Ronald D. Mathis, Roger T. Shiflet
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Patent number: 4548975Abstract: Increased resistance to discoloration induced by smog or heat is imparted to a spandex fiber by incorporating within the fiber a phenolic antioxidant and a dialkyl phenyl phosphite in which at least half of the alkyl groups are branched at the alpha position and the phenyl groups are unsubstituted or monoalkyl substituted.Type: GrantFiled: September 26, 1983Date of Patent: October 22, 1985Assignee: E. I. Du Pont de Nemours and CompanyInventor: William Lewis
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Patent number: 4543378Abstract: A polyamide composition having an enhanced adhesion to coatings, which comprises a polyamide with a ratio of the terminal amino group concentration to the terminal carboxyl group concentration of at least 1.5, an inorganic filler, and a triazine, wherein the amount of the inorganic filler is from 1 to 150 weight parts per 100 weight parts of the polyamide and the amount of the triazine is more than 1 weight part per 100 weight parts of the sum of the polyamide and the inorganic filler.Type: GrantFiled: July 20, 1983Date of Patent: September 24, 1985Assignees: Ube Industries, Ltd., Nissan Motor Company, Ltd.Inventors: Akito Suhara, Kazuhiko Takasugi, Toshihide Sato, Masashi Ono, Kazuo Higuchi, Tatsuya Chiba