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: 5063263Abstract: Incorporation into polyacetal molding compositions stabilized for processing with a non-meltable polymer stabilizer of 0.01-1.00 weight percent of at least one meltable co-stabilizer, said co-stabilizer being a thermal stabilizer for polyacetal, and 0.02-1.0 weight percent of at least one primary antioxidant results in significantly improved long term stability, as evidenced by greater retention of physical properties over time, of such compositions.Type: GrantFiled: June 11, 1990Date of Patent: November 5, 1991Assignee: E. I. du Pont de Nemours and CompanyInventors: Richard A. Hayes, Leonard E. R. Kosinski, Mark E. Wagman
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Patent number: 5059647Abstract: A spandex fiber is provided with discoloration resistance by a synergistic combination of a hydroxyphenyl-1,3,5-triazine ultraviolet light absorber and N,N-dialkylsemicarbazide groups, the groups being attached to the ends of the spandex polymer or as a substituent of an additive.Type: GrantFiled: September 29, 1989Date of Patent: October 22, 1991Assignee: E. I. Du Pont de Nemours and CompanyInventor: Akitsugu Kawaguchi
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Patent number: 5057564Abstract: The present invention relates to novel polymers which are adducts of an unsaturated hydrocarbon, wherein the novel polymers are produced by contacting cyclic carbonyl monomers with an unsaturated hydrocarbon to form novel cyclic carbonyl polymers having an Mn of about 500 to about 10.sup.7.Type: GrantFiled: July 23, 1990Date of Patent: October 15, 1991Assignee: Exxon Research and Engineering CompanyInventor: Stanley J. Brois
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Patent number: 5045577Abstract: The addition of hindered amines in combination with a phosphorus-III-ester to the polymerization of olefins on spherical Ziegler-Natta catalysts effects a thermo-oxidative stabilization of the prepared polymers. Phenolic antioxidants may be used additionally.Type: GrantFiled: June 21, 1989Date of Patent: September 3, 1991Assignee: Ciba-Geigy CorporationInventors: Rolf Mulhaupt, Paul Dubs
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Patent number: 5045578Abstract: The invention relates to polymer mixtures which comprise a polyphenylene ether, a sterically hindered amine, an epoxy compound, and a salt of a fatty acid. The polymer mixtures according to the invention have a good stability against discoloring by light.Type: GrantFiled: October 13, 1988Date of Patent: September 3, 1991Assignee: General Electric Co.Inventors: Christianus A. A. Claesen, Hideo Koike
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Patent number: 5037869Abstract: An improved process is disclosed for preparing flame retardant polyamide molding resins containing melamine cyanurate as a flame retarding agent which results in products with improved mechanical properties and good flame retarding properties. It comprises the addition of a glycol and a phthalate ester to the process wherein a polyamide, melamine or derivatives thereof and cyanuric acid are melt-blended in the presence of water.Type: GrantFiled: June 8, 1990Date of Patent: August 6, 1991Assignee: Monsanto CompanyInventor: William E. Sprenkle, Jr.
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Patent number: 5036125Abstract: Single-component diorganopolysiloxane compositions, stable in storage in the absence of atmospheric moisture and crosslinkable into elastomeric state in the presence of moisture, well adapted, e.g., as sealants and adhesives for the construction industry, contain (A) a diorganopolysiloxane polymer having silanol endgroups, (B) a ketiminoxysilane crosslinking agent, (C) a stabilizing amount of an isocyanurate of the formula: ##STR1## (D) an inorganic filler material, and (E) a metal curing catalyst.Type: GrantFiled: June 29, 1990Date of Patent: July 30, 1991Assignee: Rhone-Poulenc ChimieInventor: Patrice Perrin
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Patent number: 5036151Abstract: The invention relates to trimerized aliphatic isocyanates produced by special processes, to their use as mold release agents in thermoplastic aromatic polycarbonates and/or thermoplastic aromatic polyestercarbonates and/or thermoplastic aromatic polyesters, optionally using standard additives, to the readily demoldable molding compounds thus obtained on the basis of the thermoplastic polycarbonates, polyestercarbonates and/or polyesters and to processes for the production of these readily demoldable molding compounds.Type: GrantFiled: March 14, 1990Date of Patent: July 30, 1991Assignee: Bayer AktiengesellschaftInventors: Holger Ohst, Helmut-Martin Meier, Klaus Kircher
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Patent number: 5032631Abstract: Polyester molding compositions include an effective amount of a triazine-based antioxidant and a benzophenone ultraviolet light absorber sufficient to achieve a clor difference, as calculated in CIELab units under illuminant "D-65" according to ASTM Standard D-2244, of less than about 10,0, when exposed in a Xenon arc weather-ometer operated according to SAE J1885 for 315 Kj/sq.m. The triazine-based antioxidant is of the formula: ##STR1## wherein R is a phenolic group attached to the triazine ring via a C1 to C5 alkyl or an ester substituent. Preferably, the triazine-based antioxidant is 3,5-di-tert-butyl-4-hydroxyhydrocinnamic acid triester with 1,3,5-tris-(2-hydroxyethyl)-s-triazine-2,4,6-(1H, 3H, 5H) trione. The benzophenone UV-absorber is of the general formula: ##STR2## where R' is hydrogen or an alkyl radical.Type: GrantFiled: November 10, 1988Date of Patent: July 16, 1991Assignee: Hoechst Celanese CorporationInventors: Michael D. Golder, Bruce M. Mulholland
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Patent number: 5030671Abstract: A composition containing a) a chlorine-containing polymer, b) at least one Me(II) carboxylate and/or Me(II) phenolate, wherein Me(II) represents Ba, Ca, Mg, Sr or Zn, and c) at least one compound of formula I ##STR1## wherein n is 1, 2, 3, 4 or 6 and, when n is 1, X is C.sub.1 -C.sub.20 alkyl, C.sub.3 -C.sub.20 -alkenyl, C.sub.5 -C.sub.12 cycloalkyl, C.sub.5 -C.sub.12 cycloalkyl substituted by C.sub.1 -C.sub.4 alkyl, phenyl, C.sub.7 -C.sub.9 phenylalkyl, phenyl substituted by from 1 to 3 radicals or C.sub.7 -C.sub.9 phenylalkyl substituted on the phenyl ring by from 1 to 3 radicals, the radicals being selected from the group consisting of C.sub.1 -C.sub.4 alkyl, chlorine, hydroxy, methoxy and ethoxy; when n is 2, X is C.sub.2 -C.sub.12 alkylene, C.sub.2 -C.sub.12 alkylene substituted by phenyl, or C.sub.2 -C.sub.12 alkylene interrupted by oxygen or sulfur atoms; when n is 3, X is, for example, C.sub.3 -C.sub.7 alkanetriyl; when n is 4, X is, for example, C.sub.4 .varies.C.sub.Type: GrantFiled: October 16, 1989Date of Patent: July 9, 1991Assignee: Ciba-Geigy CorporationInventors: Wolfgang Wehner, Gerd Abeler
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Patent number: 5023283Abstract: Esters of N,N-bis(hydroxyethyl)hydroxylamines corresponding to the formula ##STR1## wherein R are various aliphatic and aromatic groups, and X is hydroxy or substituted carboxyethyl are effective in stabilizing various organic materials against oxidative, thermal and actinic degradation.Type: GrantFiled: April 25, 1989Date of Patent: June 11, 1991Assignee: Ciba-Geigy CorporationInventors: Ramanathan Ravichandran, Raymond Seltzer
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Patent number: 5015681Abstract: Thermoplastic molding materials contain, as essential components,(A) from 40 to 99.55% by weight of a thermoplastic polyamide,(B) from 0.45 to 15% by weight of a thermoplastic polyester elastomer,(C) from 0.05 to 1.99% by weight of melamine cyanurate and in addition(D) from 0 to 50% by weight of fibrous or particulate fillers or a mixture thereof.Type: GrantFiled: November 28, 1989Date of Patent: May 14, 1991Assignee: BASF AktiengesellschaftInventors: Peter Steiert, Walter Betz, Christoph Plachetta, Eckhard M. Koch
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Patent number: 5013838Abstract: The present invention relates to a process for the production of an isocyanurate group-containing polyisocyanate by(a) partially reacting the isocyanate groups of an organic diisocyanate containing aliphatically and/or cycloaliphatically bound isocyanate groups in the presence of an ammonium or phosphonium fluoride trimerization catalyst,(b) introducing carbon dioxide into the reaction mixture at least periodically during the reaction and(c) terminating the reaction at the desired degree of conversion.The present invention also relates to the isocyanurate group-containing polyisocyanates obtained in accordance with this process.Type: GrantFiled: January 19, 1990Date of Patent: May 7, 1991Assignee: Bayer AktiengesellschaftInventor: Hans-Joachim Scholl
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Patent number: 5006587Abstract: A polypropylene composition which demonstrates good color stability and water carry-over properties comprises polypropylene containing a hindered amine light stabilizer and about 0.01 to about 0.5 wt. % of a fluoborate salt. Ammonium fluoborate, sodium fluoborate and potassium fluoborate are particularly useful.Type: GrantFiled: September 25, 1989Date of Patent: April 9, 1991Assignee: Amoco CorporationInventor: Ivor R. Fielding
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Patent number: 5006577Abstract: N-hydroxy-substituted hindered amine light stabilizers impart outstanding stabilization properties to ambient cured coatings based on a variety of resins, the stabilized coatings exhibiting improved durability, weatherability, and the like.Type: GrantFiled: October 19, 1988Date of Patent: April 9, 1991Assignee: Ciba-Geigy CorporationInventors: Rudolf A. Behrens, Andrew Mar
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Patent number: 5000917Abstract: The corrosion tendencies of polymers of 4-methyl-1-pentene, when combined with tris-(3,5-ditert-butyl-4-hydroxybenzyl)isocyanurate and bis-(2,4-ditert-butyl)pentaerythritol, diphosphite are reduced. Optionally, metal stearates can be added to further reduce the polymer corrosion tendencies.Type: GrantFiled: July 30, 1990Date of Patent: March 19, 1991Assignee: Phillips Petroleum CompanyInventor: Kenneth W. Willcox
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Patent number: 4996244Abstract: Compounds having defined functional groups are described which color stabilize aromatic carbonate polymers or blends therewith upon exposure to sterilizing radiation.Type: GrantFiled: October 20, 1989Date of Patent: February 26, 1991Assignee: General Electric CompanyInventor: Roger W. Avakian
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Patent number: 4996253Abstract: A polyoxymethylene composition which exhibits improved stability against the degradative effects of ultraviolet light includes a triazine-based antioxidant and UV stabilizers. One preferred composition of the invention includes, based upon the total weight of the composition, an oxymethylene copolymer, between 0.015 to about 0.4 weight percent of 2,4,6-triamino-sym-triazine (as a formaldehyde scavenger), between about 0.25 to about 1.0 weight percent of each of 2-2(hydroxy-5-t-octylphenyl) benzotriazole, and bis(2,2,6,6-tetramethyl-4-piperidinyl)sebacate as UV light stabilizers, and between about 0.25 to about 1.0 weight percent of 3,5-di-tert-butyl-4-hydroxyhydrocinnamic acid triester with 1,3,5-tris(2-hydroxy-ethyl)-s-triazine-2,4,6-(1H, 3H, 5H)-trione as an antioxidant. Due to their enchanced UV-light stability property, the compositions of the invention find particular utility as molded automobile components.Type: GrantFiled: November 10, 1988Date of Patent: February 26, 1991Assignee: Hoechst Celanese CorporationInventor: Bruce M. Mulholland
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Patent number: 4992548Abstract: The present invention is directed to catalysts obtained by mixing alkali fluorides with quaternary ammonium or phosphonium salts.The present invention is also directed to a process for the production of these catalysts by stirring alkali fluorides and quaternary ammonium or phosphonium salts in alcohol, separating any deposits formed, removing the alcohol and converting the catalyst into useful form by dilution in solvents or absorption onto support materials.Finally, the present invention is directed to the use of the new catalysts as trimerization catalysts for the production of polyisocyanates containing isocyanurate groups.Type: GrantFiled: August 8, 1989Date of Patent: February 12, 1991Assignee: Bayer AktiengesellschaftInventors: Hans-Joachim Scholl, Josef Pedain
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Patent number: 4990578Abstract: Polyol-polycarbonates having a molecular weight comprising within the range from 750 to 2500, endowed with good rheologic characteristics and having a low glass transition temperature (Tg), are obtained by means of the reaction, under transesterification conditions, of(a) an organic carbonate;(b) a saturated alifatic .alpha.,.omega.-glycol; and(c) tris-(hydroxyethyl)-isocyanurate.These polyol-polycarbonates are useful as bases for paints in combination with polyisocyanates.Furthermore, the polyol-polycarbonates can be reacted with bicarboxy acids, or with cyclic anhydrides in order to yield the corresponding products with carboxy end groups which are useful as bases for paints in combination with melaminic or epoxy resins.Type: GrantFiled: June 19, 1989Date of Patent: February 5, 1991Assignee: Enichem Synthesis S.p.A.Inventors: Alberto Greco, Gabriele Lugli
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Patent number: 4983655Abstract: A plastisol composition comprising polyvinyl chloride as a main component, a plasticizer and a blocked compound of diisocyanate polymer with styrenated phenol as an adhesion-improver, and optionally a powdery curing agent having a melting point of 50.degree. to 150.degree. C. which is surface-treated, said composition having improved adhesion properties when gelated under low temperature conditions such as at 110.degree. to 130.degree. C. for 15 to 30 minutes and being useful as an adhesive, a sealant, or a coating agent, particularly as a sealant for the body of automobiles, and a novel blocked polyisocyanurate compound useful as an adhesion-improver for the above plastisol composition and also as an adhesive, a coating agent, a sealant, and an crosslinking agent for an active hydrogen-containing high molecular weight compound.Type: GrantFiled: June 23, 1989Date of Patent: January 8, 1991Assignee: Sunstar Giken Kabushiki KaishaInventors: Yoshihiro Nakata, Tadao Kunishige
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Patent number: 4972014Abstract: Incorporation into polyacetal molding compositions stabilized with a non-meltable polymer stabilizer of 0.02-1.0 weight percent of at least one amide-containing phenolic antioxidant results in significantly improved long term stability, as evidenced by greater retention of physical properties over time, of such compositions.Type: GrantFiled: June 15, 1989Date of Patent: November 20, 1990Assignee: E. I. du Pont de Nemours and CompanyInventors: Richard A. Hayes, Leonard E. R. Kosinski, Mark E. Wagman
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Patent number: 4968736Abstract: The corrosion tendencies of polymers of 4-methyl-1-pentene, when combined with tris-(3,5-ditert-butyl-4-hydroxybenzyl)isocyanurate and bis-(2,4-ditert-butyl)pentaerythritol diphosphite are reduced. Optionally, metal stearates can be added to further reduce the polymer corrosion tendencies.Type: GrantFiled: August 23, 1988Date of Patent: November 6, 1990Inventor: Kenneth W. Willcox
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Patent number: 4965301Abstract: In thermal stabilization of poly(.alpha.-olefin) fibers, such as a melt spun polypropylene, in which the poly(.alpha.-olefin) contains a hindered phenol, an organic phosphite, a hindered amine, and a metal salt of a fatty acid, the further inclusion of an alkali metal phosphate, such as sodium phosphate, results in improved thermal stability of the finished fiber.Type: GrantFiled: March 7, 1988Date of Patent: October 23, 1990Assignee: Phillips Petroleum CompanyInventor: James C. Leininger
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Patent number: 4945016Abstract: The present invention relates to an adhesive composition comprising 100 parts by weight of a polyester-polyurethane having an isocyanate group (--NCO) and 0.002-20 parts by weight of a halogenating agent, suitably used for the adhesion of polyolefin materials which are difficult to glue, such as car molding and base materials for electrostatic flocked products, the adhesion of trimming, the adhesion of rubber products and others.Type: GrantFiled: January 24, 1989Date of Patent: July 31, 1990Assignee: Toyoda Gosei Co., Ltd.Inventor: Tatsuya Murachi
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Patent number: 4925938Abstract: Novel hindered hydroxyphenyl alkyl isocyanurates are provided which are useful as stabilizers of resins made from at least one ethylenically unsaturated monomer.Type: GrantFiled: December 20, 1988Date of Patent: May 15, 1990Assignee: ICI Americas Inc.Inventors: James P. Neilan, John F. Stephen
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Patent number: 4902440Abstract: A UV-curable resin composition, which comprises blending urethane acrylate with tris(2-acryloxyethyl)isocyanurate, or with tris(2-acryloxyethyl)isocyanurate and with diacrylate, which composition has a low viscosity and a good drawing workability before curing and cures rapidly by ultraviolet radiation to give cured products having a high elastic modulus, a high elongation and a low water-absorption.Type: GrantFiled: July 20, 1987Date of Patent: February 20, 1990Assignee: The Yokohama Rubber Co., Ltd.Inventors: Hidekazu Takeyama, Yoshinobu Ohashi, Shuji Okagawa, Masayuki Nishimoto, Masao Nishimura
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Patent number: 4898901Abstract: Long chain N-alkyl-alpha-alkyl nitrones represent particularly valuable process stabilizers for polyolefin compositions. The nitrone derived from the long chain alkyl mixture present in di(hydrogenated tallow)amine is especially useful for this purpose.Type: GrantFiled: March 23, 1989Date of Patent: February 6, 1990Assignee: Ciba-Geigy CorporationInventors: Ramanathan Ravichandran, Stephen D. Pastor, Raymond Seltzer, Ambelal R. Patel
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Patent number: 4888370Abstract: Flame-resistant, thermoplastic polyamide moulding materials which contain 0.01-4% by weight of polyphenylene oxides as flameproofing agent and which are prepared by mixing the components in the melt.Type: GrantFiled: September 7, 1988Date of Patent: December 19, 1989Assignee: Bayer AktiengesellschaftInventors: Dieter Freitag, Thomas Joswig, Karsten Idel, Heinz-Josef Fullmann, Friedemann Muller
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Patent number: 4885326Abstract: A synthetic resin composition comprises 100 parts by weight of a synthetic resin, 0.001 to 10 parts by weight of a cyclic alkylphosphite compound of 2,2'-alkylidene-bisphenol (I) and 0.001 to 10 parts by weight of beta-(3,5-dialkyl-4-hydroxyphenyl)-propionic acid ester (II) and is stabilized to light and heat.Type: GrantFiled: March 24, 1989Date of Patent: December 5, 1989Assignee: Adeka Argus Chemical Co., Ltd.Inventors: Tohru Haruna, Kazunori Nishikawa, Mitsuhiro Hamajima
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Patent number: 4880854Abstract: Compounds having defined triazine functional groups are described which color stabilize aromatic carbonate polymers or blends therewith upon exposure to sterilizing radiation.Type: GrantFiled: December 22, 1987Date of Patent: November 14, 1989Assignee: General Electric CompanyInventor: Roger W. Avakian
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Patent number: 4879141Abstract: The present invention includes:(i) a method for making a coated particulate comprising the steps ofheating until liquid a polyolefin wax;fluidizing with a hot gas, additive particles selected from the group comprising an antioxidant, a processing stabilizer, an acid acceptor, and mixtures thereof;spraying the liquid polyolefin wax on the heated fluidized additive particles; andmaintaining the fluidized additive particles at a temperature which is sufficient to prevent the formation of fibers and adequate to form discrete substantially coated additive particles;(ii) a coated particulate made by the above process; and(iii) a process for providing in-reactor stabilization of a polyolefin during a polymerization reaction, using the coated additives prepared by the above described method.Type: GrantFiled: December 27, 1988Date of Patent: November 7, 1989Assignee: Shell Oil CompanyInventor: Ananda M. Chatterjee
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Patent number: 4877825Abstract: The invention relates to elasthane fibers which are protected against harmful environmental influences, particularly sunlight and combustion gases, by a synergistic stabilizer combination of(a) highly alkylated, phenolic antioxidants corresponding to the following formula ##STR1## in which R.sup.1, R.sup.2 and R.sup.3 are C.sub.1 -C.sub.3 alkyl radicals, in addition to which R.sup.3 may be C.sub.4 -C.sub.6 alkyl radicalsand(b) oligomeric, (cyclo)aliphatic phosphorous acid esters (oligomeric phosphites) obtained by reaction of pentaerythritol, perhydrobisphenol A and, optionally, a mono- alcohol with monomeric trialkyl or triaryl phosphites.Type: GrantFiled: March 10, 1989Date of Patent: October 31, 1989Assignee: Bayer AkteingesellschaftInventors: Michael Kausch, Hans-Josef Buysch, Hans Schroer, Carlhans Suling
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Patent number: 4873279Abstract: A resinous composition comprising:(i) at least one copolyester-carbonate 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: October 10, 1989Assignee: General Electric CompanyInventor: Linda H. Nelson
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Patent number: 4866114Abstract: Self-extinguishing, thermoplastic polyphenylene ether/polyamide molding materials contain, as essential components,(A) from 10 to 90% by weight of component (A), which consists of(A.sub.1) from 70 to 99% by weight of a modified polyphenylene ether,(A.sub.2) from 1 to 30% by weight of a compound containing bound phosphorus, the percentages by weight being based on the total weight of component (A), and(B) from 90 to 10% by weight of component (B), which consists of(B.sub.1) from 80 to 99% by weight of one or more polyamides and(B.sub.2) from 1 to 20% by weight of one or more compounds containing a bound triazine radical and from the group consisting of cyanuric acid and its derivatives.Type: GrantFiled: September 28, 1988Date of Patent: September 12, 1989Assignee: BASF AktiengesellschaftInventors: Christof Taubitz, Hermann Gausepohl, Klaus Boehlke
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Patent number: 4863982Abstract: Compounds of the formula I ##STR1## R.sup.4 is C.sub.5 -C.sub.7 -cycloalkyl which can be substituted by C.sub.1 -C.sub.4 -alkyl, and R.sup.5 to R.sup.9 are independently of one another C.sub.1 -C.sub.18 alkyl, unsubstituted or C.sub.1 -C.sub.4 -alkyl-substituted C.sub.5 -C.sub.7 -cycloalkyl, phenyl, benzyl or allyl, are suitable for stabilizing organic material against thermal, oxidative and/or actinic degradation.Type: GrantFiled: July 6, 1988Date of Patent: September 5, 1989Assignee: Ciba-Geigy CorporationInventors: Werner Stegmann, Eduard Troxler, Peter Hofmann, Hans-Rudolf Meier, Paul Dubs
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Patent number: 4853426Abstract: The present invention includes:(i) a method for making a coated particulate comprising the steps ofheating until liquid a polyolefin wax;fluidizing with a hot gas, additive particles selected from the group comprising an antioxidant, a processing stabilizer, an acid acceptor, and mixtures thereof;spraying the liquid polyolefin wax on the heated fluidized additive particles, andmaintaining the fluidized additive particles at a temperature which is sufficient to prevent the formation of fibers and adequate to form discrete substantially coated additive particles;(ii) a coated particulate made by the above process; and(iii) a process for providing in-reactor stabilization of a polyolefin during a polymerization reaction, using the coated additives prepared by the above described method.Type: GrantFiled: January 25, 1988Date of Patent: August 1, 1989Assignee: Shell Oil CompanyInventor: Ananda M. Chatterjee
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Patent number: 4829111Abstract: A stabilizer composition for synthetic resin is described comprising a piperazine derivative represented by the following formula (I): ##STR1## wherein R.sub.1 and R.sub.2 each represents an alkyl group having from 12 to 20 carbon atoms or a 2,2,6,6-tetramethyl-4-piperidyl group; R.sub.3 and R.sub.4 each represents a hydrogen atom or a methyl group; and n and m each represents 2 or 3.A synthetic resin composition is also described comprising polyolefin and the aforesaid piperazine derivative.Type: GrantFiled: February 2, 1988Date of Patent: May 9, 1989Assignee: Mitsubishi Petrochemical Co., Ltd.Inventors: Kazuyuki Iida, Hiroyuki Omori, Akiyoshi Oonishi, Masami Takahashi
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Patent number: 4826983Abstract: Novel hindered hydroxyphenyl alkyl isocyanurates are provided which are useful as stabilizers of resins made from at least one ethylenically unsaturated monomer.Type: GrantFiled: November 16, 1987Date of Patent: May 2, 1989Assignee: ICI Americas Inc.Inventors: James P. Neilan, John F. Stephen
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Patent number: 4822833Abstract: Rigid polyvinyl chloride stabilized against the adverse effects of ultraviolet radiation by the addition thereto of effective amounts of 2,2,6,6-tetraalkylpiperidine compound and an organotin carboxylate thermal stabilizer, optionally with reduced amounts of titanium dioxide, organotin mercapto esters and/or organotin mercaptide thermal stabilizers.Type: GrantFiled: February 3, 1988Date of Patent: April 18, 1989Assignee: Ciba-Geigy CorporationInventors: Jean M. Zappia, Gerald A. Capocci
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Patent number: 4820755Abstract: This invention provides polymers containing radiochromic hindered phenolic stabilizers which are characterized by including a blue compound which interacts with the hindered phenolic during irradiation to provide a color change indicative of sterility.Type: GrantFiled: August 18, 1987Date of Patent: April 11, 1989Assignee: American Cyanamid CompanyInventor: Joseph R. Webster
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Patent number: 4814103Abstract: The present invention is directed to the stabilization of a prepolymer based on methylene diphenyl isocyanate rich in the 2,4'-isomer. It was surprisingly found that the color stability, viscosity and aging characteristics of the prepolymer are improved markedly upon the incorporation therewith of a combination of a certain epoxide compound and a hindered phenol.Type: GrantFiled: February 18, 1988Date of Patent: March 21, 1989Assignee: Mobay CorporationInventors: Terry A. Potter, Richard S. Pantone, Russell P. Carter, Jr.
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Patent number: 4812500Abstract: An improved polyolefin pipe or wire and coating composition having improved resistance to deterioration in the presence of chlorinated and nonchlorinated water and having improved resistance to temperatures in the range of about 0.degree. C., as well as in cool water consisting of a blend of:(a) about 93 to about 99.5 percent by weight of an isotactic poly-1-butene polymer;(b) about 0.05 to about 0.50 percent by weight of a hindered amine UV stabilizer;(c) about 0.05 to about 1.1 by weight of a hindered phenolic thermal stabilizer having a molecular weight above 530;(d) about zero to about 0.5 percent by weight of a nucleating agent;(e) about zero to about 4 percent by weight of a pigment;(f) about zero to about 3.0 percent by weight of a filler; and(g) up to about 3.0 percent by weight of a chelating agent.Type: GrantFiled: September 30, 1987Date of Patent: March 14, 1989Assignee: Shell Oil CompanyInventor: Earl E. Hayden
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Patent number: 4812501Abstract: 1,3,2-oxazaphospholidine 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.Type: GrantFiled: March 16, 1988Date of Patent: March 14, 1989Assignee: Ciba-Geigy CorporationInventors: Paul A. Odorisio, Stephen D. Pastor, James L. Hyun
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Patent number: 4793972Abstract: The corrosion tendencies of polymers of 4-methyl-1-pentene, when combined with tris-(3,5-ditert-butyl-4-hydroxybenzyl)isocyanurate and bis(2,4-ditert-butyl)pentaerythritol diphosphite are reduced. Optionally, metal stearates and/or poly[[6-[(1,1,3,3-tetramethylbutyl)amino]-5-triazine-2,4-diyl][2,2,6,6-tet ramethyl-4-piperidyl)imino]hexamethylene[2,2,6,6-tetramethyl-4-piperidyl)im ino]] can be added to further reduce the polymer corrosion tendencies.Type: GrantFiled: February 29, 1988Date of Patent: December 27, 1988Assignee: Phillips Petroleum CompanyInventor: Kenneth W. Willcox
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Patent number: 4789698Abstract: Polyamide moulding materials which have been reinforced with unsized glass fibres and to which a flame-proof finish has been imparted by means of melamine or melamine cyanurate and which have a high glow wire resistance.Type: GrantFiled: March 9, 1987Date of Patent: December 6, 1988Assignee: Bayer AktiengesellschaftInventors: Heinz Bonten, Werner Nielinger, Dietrich Michael, Harald Selbeck, Rolf-Volker Meyer
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Patent number: 4786673Abstract: Flame retarded polyamides and methods for their preparation, the polyamides being obtained by anionic polymerization of lactams or by the hydrolytic polycondensation of monomers in the presence of chain terminators, the flame resistance being conferred by incorporating into the molten polyamide a mixture of melamine cyanurate and a polyol having at least four hydroxy groups.Type: GrantFiled: January 26, 1988Date of Patent: November 22, 1988Assignee: AtochemInventors: Genevieve Morival, Catherine Hervy
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Patent number: 4785035Abstract: A curing composition comprising a silane functional acrylic polymer component and a silane functional oligomer component. The polymer component is a co-polymer of functional silyl group-containing units derived from monomers of Formula:CH.sub.2 .dbd.CR.sup.1 CO.sub.2 (CH.sub.2).sub.a LThe oligomer component is of formulaE(GKL).sub.6in which E is derived from a multifunctional isocyanate oligomer, G is of general formula:--[O(CH.sub.2).sub.5 CO].sub.C [O(CH.sub.2).sub.d OCO(CH.sub.2).sub.2 ]--and K is of general formula:--[NR.sup.5 (CH.sub.2).sub.Type: GrantFiled: October 30, 1987Date of Patent: November 15, 1988Assignee: Imperial Chemical Industries PLCInventors: August L. L. Palluel, Stephen P. Davis, Angela C. Fletcher
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Patent number: 4777212Abstract: The present invention relates to thermoplastic moulding compositions comprising polydiorganosiloxane-polycarbonate block copolymers, copolymers of styrene and maleic anhydrides, graft polymers and, where appropriate, further customary additives and a process for preparing these moulding compositions.Type: GrantFiled: November 21, 1986Date of Patent: October 11, 1988Assignee: Bayer AktiengesellschaftInventors: Hans-Jurgen Kress, Winfried Paul, Horst Peters, Christian Lindner, Josef Buekers
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Patent number: 4769406Abstract: A hot melt adhesive suitable for bonding plastic, metal, and glass together has been developed by blending together into a homogenous mixture 10 to 20 weight percent of ethylene/vinyl acetate/acid functional terpolymer resin of low acid number, 15 to 50 weight percent of ethylene/vinyl acetate/acrylic acid terpolymer resin of high acid number and 30 to 60 weight percent of tackifying resins based on alpha-methylstyrene, rosin, or a terpene resin. Additionally, suitable antioxidants and surfactants are added to control the aging and application of the composition.Type: GrantFiled: March 2, 1987Date of Patent: September 6, 1988Assignee: Essex Specialty Products, Inc.Inventor: Robert J. Keithley