Six-membered Nitrogen Ring, E.g., Pyridine, Etc. Patents (Class 524/99)
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Patent number: 5350786Abstract: Stabilizers for organic polymers, consisting of one or more compounds of the classis of the sterically hindered amines (HALS) are directly added to the reaction mixture during the (co)polymerization of the .alpha.-olefins or of their mixtures with other unsaturated monomers.The so-obtained polymeric compositions result perfectly stabilized and show a thermo- and photo-oxidative resistance higher than that of the same polymeric compositions to which the same stabilizers are added by a traditional route.Type: GrantFiled: March 4, 1993Date of Patent: September 27, 1994Assignee: Enichem Synthesis S.p.A.Inventors: Silvestro Costanzi, Damiano Gussoni, Luciano Pallini
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Patent number: 5350449Abstract: 2-(2-Hydroxyphenyl)-4,6-diphenyl- and -4,6-di-p-tolyl-1,3,5-triazines are particularly suitable stabilisers, especially against light-induced degradation, for coating materials. They are superior in this respect to the corresponding 4,6-bis(2,4-dimethylphenyl) derivatives.Type: GrantFiled: January 11, 1994Date of Patent: September 27, 1994Assignee: Ciba-Geigy CorporationInventors: Andreas Valet, Jean-Luc Birbaum, Mario Slongo
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Patent number: 5340857Abstract: Described are novel reversible photochromic naphthopyran compounds substituted on the naphthyl portion at the carbon atom juxtaposed to the oxygen of the pyran ring with, for example, an acetoxy group. Also described are organic host materials that contain or that are coated with such compounds. Articles such as ophthalmic lenses or other plastic transparencies that incorporate the novel naphthopyran compounds or combinations thereof with complementary photochromic compounds, e.g., spiro(indolino)-oxazine type compounds, are also described.Type: GrantFiled: July 14, 1993Date of Patent: August 23, 1994Assignee: PPG Industries, Inc.Inventor: Barry Van Gemert
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Patent number: 5338853Abstract: N-(2,2,6,6-tetraalkyl-4-piperidinyl)amic acid hydrazides contain a light stabilizing group, a heat stabilizing group and an amic acid hydrazide functionality in the same molecule. The amic acid hydrazide functionality in the compounds enhances the photooxidative stabilizing properties of the hindered amine groups and contributes thermal and oxidative stabilizing and metal complexing properties to the compounds. The novel compounds are excellent light stabilizers for polyolefins, have low volatility and are not readily lost from polymeric systems via volatilization, migration or extraction.Type: GrantFiled: November 18, 1991Date of Patent: August 16, 1994Assignee: Elf Atochem North America, Inc.Inventors: Ronald E. MacLeay, Harold C. Lange
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Patent number: 5338780Abstract: A polyolefin resin (A) containing carbon black is blended with the following components:(B) a phenolic compound represented by the following formula (I): ##STR1## wherein R.sup.1 is alkyl of 1 to 4 carbon atoms; (C) an organic sulfur compound selected from the compounds represented by the following formulas (II-1) and (II-2):(R.sup.2 --OCOCH.sub.2 CH.sub.2).sub.2 S (II-1)(R.sup.2 --SCH.sub.2 CHCOOCH.sub.2).sub.4 C (II-2)wherein R.sup.2 is alkyl of 4 to 20 carbon atoms;(D) a piperidine compound having at least one 2,2,6,6-tetramethylpiperidine ring in a molecule; and(E) an epoxy compound of bisphenol A type glycidyl ether. The composition thus blended exhibits excellent stability against thermal oxidation.Type: GrantFiled: November 24, 1993Date of Patent: August 16, 1994Assignee: Sumitomo Chemical Company, LimitedInventors: Fumitoshi Kojima, Tetsuo Yamaguchi
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Patent number: 5334642Abstract: Stabilized polyaryl ether ketone molding compositions containing as essential componentsA) from 50 to 99.99% by weight of a polyaryl ether ketone prepared by electrophilic polycondensation and composed to an extent of not less than 50 mol % of units of the formula I' ##STR1## where s and t are each 0, 1, 2 or 3, T and T' are each --O-- or --CO-- and Ar is meta-phenylene, paraphenylene or two aromatic rings linked to each other in the meta or para position by a chemical bond, or the ring-substituted C.sub.1 -C.sub.8 -alkyl, C.sub.6 -C.sub.20 -aryl or halogen derivatives thereof,B) from 0.01 to 4% by weight of at least one organic compound which has a base constant pk.sub.b within the range from 2 to 12 and a boiling point of higher than 300.degree. C.,C) from 0 to 50% by weight of a further thermoplastic other than A), andD) from 0 to 45% by weight of fibrous or particulate fillers or mixtures thereof.Type: GrantFiled: December 30, 1992Date of Patent: August 2, 1994Assignee: BASF AktiengesellschaftInventors: Juergen Koch, Gerhard Heinz
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Patent number: 5331019Abstract: A lubricious polymeric composition which is stable toward sterilizing radiation includes a semicrystalline polyolefin of narrow molecular weight distribution having incorporated therein a liquid mobilizing additive, a radiation stabilizing amount of a hindered amine, a lubricating amount of an erucic acid derivative and a clarifying amount of a sorbitol derivative. The invention includes a sterilized article fabricated from the composition and a method to radiation sterilize the article.Type: GrantFiled: September 4, 1990Date of Patent: July 19, 1994Assignee: Becton, Dickinson and CompanyInventors: Donald N. Payne, Jr., Jess M. Waller, Richard P. Clarke, George R. Titus, David A. Martin
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Patent number: 5328623Abstract: There are disclosed compositions comprising: A) an organic material which is susceptible to thermal, oxidative and/or light-induced degradation, and B) at least one compound of formula I and/or II, ##STR1## wherein R.sub.0 is hydrogen, C.sub.1 -C.sub.12 alkyl, C.sub.5 -C.sub.12 cycloalkyl, C.sub.2 -C.sub.12 alkenyl, phenyl-C.sub.1 -C.sub.4 alkyl, --CO--R.sub.5 or --CO--OR.sub.5, R.sub.1 is hydrogen, methyl, ethyl or R.sub.1 together with R.sub.2 are ##STR2## R.sub.2 is hydrogen, methyl, ethyl or R.sub.2 together with R.sub.1 are ##STR3## R.sub.3 is hydrogen, methyl, ethyl or R.sub.3 together with R.sub.4 are ##STR4## R.sub.4 is hydrogen, methyl, ethyl or R.sub.4 together with R.sub.3 are ##STR5## R.sub.5 is C.sub.1 -C.sub.18 alkyl, C.sub.5 -C.sub.12 cycloalkyl, phenyl-C.sub.1 -C.sub.4 alkyl or phenyl, R.sub.6 and R.sub.7 are each independently of the other hydrogen, C.sub.1 -C.sub.12 alkyl, C.sub.5 -C.sub.12 cycloalkyl, phenyl or phenyl-C.sub.1 -C.sub.4 alkyl, R.sub.8 is C.sub.1 -C.sub.Type: GrantFiled: August 10, 1992Date of Patent: July 12, 1994Assignee: Ciba-Geigy CorporationInventor: Peter Nesvadba
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Patent number: 5322871Abstract: Compounds of the formula I ##STR1## in which x is 1, 2 or 3, and, if x=1, R.sup.1 is C.sub.1 -C.sub.30 alkyl, C.sub.1 -C.sub.18 alkyl substituted by halogen, --COOR.sup.2, --CN, --NR.sup.3 R.sup.4 or by --CONR.sup.3 R.sup.4, C.sub.2 -C.sub.18 alkyl which is interrupted by --NR.sup.5 --, --O-- or --S--, C.sub.3 -C.sub.18 alkenyl, C.sub.5 -C.sub.12 cycloalkyl, phenyl-C.sub.1 -C.sub.4 alkyl, phenyl which is unsubstituted or substituted by C.sub.1 -C.sub.12 alkyl, halogen, phenyl-C.sub.1 -C.sub.4 alkyl and/or C.sub.1 -C.sub.4 alkoxy, or R.sub.1 is naphthyl, a radical of the formula ##STR2## R.sub.2, R.sub.3, R.sub.4 and R.sub.5, independently of one another, are hydrogen, C.sub.1 -C.sub.18 alkyl, C.sub.5 -C.sub.12 cycloalkyl or phenyl-C.sub.1 -C.sub.4 alkyl, R.sup.6 is hydrogen, methyl, allyl or benzyl, R.sup.7 is hydrogen or --OR.sup.9, R.sup.8 is hydrogen or methyl, R.sup.9 is hydrogen or C.sub.1 -C.sub.30 alkyl, R.sup.10 and R.sup.11, independently of one another, are hydrogen or C.sub.1 -C.sub.Type: GrantFiled: April 20, 1993Date of Patent: June 21, 1994Assignee: Ciba-Geigy CorporationInventors: Rita Pitteloud, Peter Hofmann, Rudolf Maul, Volker Schenk, Eduard Troxler, Horst Zinke
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Patent number: 5322868Abstract: o-Hydroxyphenyl-s-triazines of formula I ##STR1## wherein n is 1 or 2 and R.sub.1 to R.sub.7 are as defined in claim 7, are good light stabilizers for coating compositions which contain a basic curing catalyst. In contradistinction to other UV absorbers, they do not cause discolorations in the presence of such catalysts.Type: GrantFiled: February 28, 1992Date of Patent: June 21, 1994Assignee: Ciba-Geigy CorporationInventors: Andreas Valet, Godwin Berner
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Patent number: 5321066Abstract: The present invention relates to novel piperidine compounds of the formula (I) ##STR1## in which A is e.g. a group of the formula ##STR2## where R.sub.4 is e.g. hydrogen or methyl, X.sub.3 is e.g. --O-- or --NH-- and R.sub.5 ' is e.g. ethylene, propylene or decamethylene, R.sub.1 is e.g. methyl, methoxy, ethoxy or OH, R.sub.2 and R.sub.3 are e.g. methyl, m+n is e.g. a number from 1 to 40, n varies e.g. from zero to 50% of the sum m+n, X.sub.1 is e.g. as defined for R.sub.1 or is a group (CH.sub.3).sub.3 SiO-- and X.sub.2 is e.g. hydrogen, methyl, ethyl, a group (CH.sub.3).sub.3 Si-- or a group ##STR3## and, when m+n is a number from 3 to 10, X.sub.1 and X.sub.2 together also form a direct bond. The compounds of the formula (I) are effective in stabilising an organic material against thermal, oxidative and light-induced degradation.Type: GrantFiled: February 19, 1993Date of Patent: June 14, 1994Assignee: Ciba-Geigy CorporationInventors: Primo Carrozza, Valerio Borzatta
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Patent number: 5318851Abstract: Curable compositions which are precursors for cured or partially cured light stabilized epoxy resins which are the product of the reaction of some or all of the epoxy groups of an epoxy resin with an N-(2,2,6,6-tetraalkyl-4-piperidinyl)amic acid hydrazide as well as the cured or partially cured reaction products thereof together with processes for their use and articles of manufacture produced thereby are disclosed.Type: GrantFiled: April 2, 1993Date of Patent: June 7, 1994Assignee: Elf Atochem N.A., Inc.Inventors: Arthur L. Baron, Ronald E. MacLeay, Jennifer P. Kmiec
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Patent number: 5312941Abstract: The invention describes basic calcium aluminum hydroxide dicarboxylates of the general formulaCa.sub.x Al.sub.2 (OH).sub.2(x+3-y) A.sub.y .multidot.m H.sub.2 Owhereinx means 2 to 12, ##EQU1## m means 0 to 12, and A means an aliphatic, aromatic or heteroaromatic dicarboxylic acid anion or combinations thereof,with the proviso that y.noteq. 1, if x= 2-8and a process for their production.The compounds according to the invention are particularly suited as stabilizers for halogen-containing thermoplastic resins, in particular PVC.Type: GrantFiled: August 6, 1993Date of Patent: May 17, 1994Assignee: Barlocher GmbHInventors: Coriolan Razvan, Reinhard Beck, Alfred Kurzinger, Michael Rosenthal, Albert W. Purzer
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Patent number: 5308899Abstract: Described are compositions protected against thermal and oxidative degradation that compriseA) a polyether polyol or mixtures of such polyols,B) at least one benzofuranone derivative of formula I, ##STR1## wherein L, G, m, R.sub.1 to R.sub.5 and R.sub.21 to R.sub.24 are as defined in claim 1,C) at least one compound from the group of the phenolic anti-oxidants, and/orD) at least one compound from the group of the amino anti-oxidants of the secondary amine type. Also polyurethane(s) (foam(s)) prepared therefrom are protected against thermal and oxidative degradation, especially against core scorching.Type: GrantFiled: November 16, 1992Date of Patent: May 3, 1994Assignee: Ciba-Geigy CorporationInventor: Peter Michaelis
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Patent number: 5306823Abstract: Novel compounds according to formula I ##STR1## are disclosed, as well as processes for their production and methods for their use.These compounds are useful as light stabilizers for polymeric materials, particularly in acid catalyzed stoving finishes such as those encountered in the top coat of two layer metallic finishes.Type: GrantFiled: February 14, 1992Date of Patent: April 26, 1994Assignee: Sandoz Ltd.Inventor: Lajos Avar
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Patent number: 5302497Abstract: Compounds of the formula ##STR1## wherein R.sub.o, is hydrogen or alkylene-COOR where R is alkyl or hydroxyalkyl, R.sub.1 is hydrogen, alkyl, hydroxyalkyl, alkenyl or acyl, R.sub.2 and R.sub.3 are independently hydrogen, alkyl, alkenyl or alkoxy, R.sub.6 is hydrogen or alkyl, and X is --CH.sub.2 --, --NH--, --S-- or --O--, are suitable as UV absorbers for use in photosensitive organic materials in combination with a sterically hindered amine or hydroxyphenylbenzotriazole derivative.Type: GrantFiled: August 19, 1992Date of Patent: April 12, 1994Assignee: Ciba-Geigy CorporationInventors: Godwin Berner, Andreas Valet
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Patent number: 5300545Abstract: N-(2,2,6,6-tetraalkyl-4-piperidinyl)amide-hydrazides of dicarboxylic acids contain a light stabilizing group, a heat stabilizing group, and a reactive hydrazide functionality in the same molecule. The reactive stabilizers are prepared by reacting 4-amino-2,2,6,6-tetraalkylpiperidines with diesters (or mono ester acid chlorides) of dicarboxylic acids or dialkyl itaconates followed by hydrazinolysis of the ester group of the intermediate mono esteramide. The compounds are useful for introducing permanent heat and light stability to coreactive polymers or copolymers. They are also useful in the stabilization of inert polymeric systems against the degradative effects of heat and light when merely mixed with, rather than reacted with, the polymers for which stabilization is sought.Type: GrantFiled: March 1, 1993Date of Patent: April 5, 1994Assignee: Elf Atochem North America, Inc.Inventors: Robert T. Kazmierczak, Ronald E. Mac Leay
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Patent number: 5298067Abstract: 2-(2-Hydroxyphenyl)-4,6-diphenyl- and -4,6-di-p-tolyl-1,3,5-triazines are particularly suitable stabilizers, especially against light-induced degradation, for coating materials. They are superior in this respect to the corresponding 4,6-bis(2,4 -dimethylphenyl) derivatives.Type: GrantFiled: February 13, 1992Date of Patent: March 29, 1994Assignee: Ciba-Geigy CorporationInventors: Andreas Valet, Jean-Luc Birbaum, Mario Slongo
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Patent number: 5290896Abstract: The present invention relates to a novel ethylene/pentene-1 copolymer whose molded film has a good balance between impact resistance and tear properties and high transparency, also is prominently reduced in a variation of the transparency even after subjected to a heat treatment, and further shows high blocking resistance, provided that the copolymer fulfills specific requisites. The invention also relates to a process for the preparation of the above-mentioned ethylene/pentene-1 copolymer and a formulation of the ethylene/pentene-1 copolymer composition using a stabilizer. According to the invention, there can be obtained an ethylene/pentene-1 copolymer composition which is excellent in heat stability in the molding stage, long-term heat stability and weatherability.Type: GrantFiled: February 27, 1991Date of Patent: March 1, 1994Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Mamoru Kioka, Tsuneo Yashiki, Takashi Ueda, Masaki Kohyama, Masaya Yamada, Seiichi Ikeyama, Yoshinori Akana, Kenji Iwata, Satoshi Matsumoto, Hideki Sakai
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Patent number: 5288777Abstract: ABS copolymers and similar styrene or .alpha.-methylstyrene copolymers which contain an elastomer phase are stabilized against light-induced degradation by a) incorporation of a copolymerizable sterically hindered amine in, and b) addition of a non-copolymerizable sterically hindered amine to, the copolymer. Preferred sterically hindered amines are polyalkylpiperidines.Type: GrantFiled: November 9, 1992Date of Patent: February 22, 1994Assignee: Ciba-Geigy CorporationInventors: Bernard Gilg, Gerhard Rytz, Werner Stauffer, Margot Clauss
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Patent number: 5286785Abstract: Ethylene-carbon monoxide copolymer composition with improved thermal stability wherein the insoluble copolymer content after exposure to a temperature of 265.degree. C. during 5 minutes is at most 40 wt. % and use of the composition for the manufacture of objects, essentially consisting of ethylene-carbon monoxide copolymer. The composition preferably contains an inorganic compound reacting as a base upon contact with water.Type: GrantFiled: June 25, 1992Date of Patent: February 15, 1994Assignee: DSM N.V.Inventors: Pieter Gijsman, Daniel J. M. Tummers
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Patent number: 5283273Abstract: Chlorine-containing polymers can be stabilized against thermal and actinic degradation by addition of a) a sterically hindered amine, b) a zinc compound, c) a calcium, magnesium and/or barium compound, and d) a 1,3-dicarbonyl compound. Other additives such as phosphites or epoxides can further improve the stabilization.Type: GrantFiled: February 16, 1993Date of Patent: February 1, 1994Assignee: Ciba-Geigy CorporationInventors: Hans J. Sander, Olaf-Rene Hartmann, Hermann O. Wirth
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Patent number: 5281643Abstract: A process for increasing the crystallization rate and crystallization temperature of thermoplastic polyesters by incorporating into the polyesters quaternary ammonium salts in amounts effective to increase the crystallization temperatures of the polyesters at least 15.degree. C., which quaternary ammonium salts are substantially free of metal salts of organic acid functional groups. Molding compositions of thermoplastic polyesters and quaternary ammonium salts present in amounts effective to increase the crystallization temperatures of the polyesters at least 15.degree. C.Type: GrantFiled: May 28, 1991Date of Patent: January 25, 1994Assignees: Istituto Guido Donegani S.p.A., Enichem S.p.A.Inventor: Kavilipalayam M. Natarajan
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Patent number: 5277709Abstract: A coating composition comprising a) an organic film-forming binder; and b) a corrosion-inhibiting amount of a substantially water-insoluble mono- or poly-basic salt of:i) a ketoacid having the formula I: ##STR1## in which m and n, independently, are 0 or an integer from 1 to 10 provided that the sum of m and n is at least 1; A is C.sub.1 -C.sub.15 alkyl, C.sub.2 -C.sub.15 alkenyl, optionally substituted C.sub.3 -C.sub.12 cycloalkyl, C.sub.2 -C.sub.15 alkyl interrupted by one or more O-, N- or S-atoms, optionally substituted C.sub.6 -C.sub.10 aryl, optionally substituted C.sub.7 -C.sub.12 aralkyl, optionally substituted C.sub.7 -C.sub.12 aralkenyl, a heterocyclic residue or a ferrocenyl residue; R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are the same or different and each is a substituent A, hydrogen, OH, O-C.sub.1 -C.sub.15 alkyl, NH.sub.2, NH(C.sub.1 -C.sub.15 alkyl), N(C.sub.1 -C.sub.15 alkyl).sub.2, CO.sub.2 H, CO.sub.2 (C.sub.1 -C.sub.15 alkyl), SO.sub.3 H, P(O) (OH).sub.2 P(O)(OH)(O-C.sub.1 -C.sub.Type: GrantFiled: January 16, 1992Date of Patent: January 11, 1994Assignee: Ciba-Geigy CorporationInventors: William P. Armstrong, Emyr Phillips
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Patent number: 5274132Abstract: Described are novel reversible photochromic naphthopyran compounds, examples of which are 3-aryl-3-arylalkenyl naphthopyrans. Also described are organic host materials that contain or that are coated with such compounds. Articles such as ophthalmic lenses or other plastic transparencies that incorporate the novel naphthopyran compounds or combinations thereof with complementary photochromic compounds, e.g., spiro(indoline) type compounds, are also described.Type: GrantFiled: September 30, 1992Date of Patent: December 28, 1993Assignee: Transitions Optical, Inc.Inventor: Barry VanGemert
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Patent number: 5256713Abstract: Glycoluril based amino resin powder coating compositions have improved flow out and viscosity characteristics when a rheology improving additive selected from alkali metal oxides, alkali metal hydroxides, alkali metal carbonates, alkaline earth metal carbonates, alkaline earth metal oxides, alkaline earth metal hydroxides, aluminum oxides, aluminum hydroxides, aluminum carbonates, zinc salts of long chain fatty acids, aluminum salts of long chain fatty acids, monoamines, dismines, or mixtures thereof are added.Type: GrantFiled: April 16, 1992Date of Patent: October 26, 1993Assignee: American Cyanamid CompanyInventors: William Jacobs, III, Donna A. Foster, Sami M. Sansur
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Patent number: 5254608Abstract: A blend of ultraviolet screeners which results in excellent screening, but which does not interfere with the optical clarity of polymeric films such as poly(vinyl fluoride).Type: GrantFiled: October 19, 1989Date of Patent: October 19, 1993Assignee: E. I. Du Pont de Nemours and CompanyInventor: George R. McClure
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Patent number: 5246991Abstract: A polyvinyl chloride resin containing blended therein a hindered amine light stabilizer having the following structural formula (I): ##STR1## wherein each of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 represents a lower alkyl group and R.sub.5 represents an alkylene or terminal acetyl group, in an amount of 0.01-5 parts by weight based on 100 parts by weight of a polyvinyl chloride resin.Type: GrantFiled: December 5, 1991Date of Patent: September 21, 1993Assignee: Sumitomo Chemical Company, LimitedInventors: Toshio Igarashi, Akira Wakatsuki, Yuu Shida
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Patent number: 5246990Abstract: A cured ethylene.multidot..alpha.-olefin copolymer-based rubber composition excellent in weathering resistance property is produced by curing with an organic peroxide an uncured rubber composition comprising 100 parts by weight of an ethylene .multidot..alpha.-olefin copolymer-based rubber, 1 to 10 parts by weight of a hindered amine-based weathering agent, 0.01 to 10 parts by weight of a phenol-based antioxidant, 0.01 to 10 parts by weight of a sulfur-based antioxidant, 0.01 to 10 parts by weight of a phosphite ester-based antioxidant, and 1 to 10 parts by weight of a benzotriazole-based ultraviolet absorber.Type: GrantFiled: November 15, 1991Date of Patent: September 21, 1993Assignee: Sumitomo Chemical Company, LimitedInventors: Masashi Aoshima, Hironobu Shigematsu, Takeru Wadaki
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Patent number: 5244602Abstract: Described are novel reversible photochromic naphthopyran compounds substituted on the naphthyl portion at the carbon atom juxtaposed to the oxygen of the pyran ring with, for example, an acetoxy group. Also described are organic host materials that contain or that are coated with such compounds. Articles such as ophthalmic lenses or other plastic transparencies that incorporate the novel naphthopyran compounds or combinations thereof with complementary photochromic compounds, e.g., spiro(indolino)-oxazine type compounds, are also described.Type: GrantFiled: December 3, 1990Date of Patent: September 14, 1993Assignee: PPG Industries, Inc.Inventor: Barry Van Gemert
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Patent number: 5244948Abstract: Polyolefins and olefin copolymers which are prepared by polymerization on a catalyst made from a magnesium halide, a titanium compound and an aluminium alkyl can be stabilized by the addition of certain sterically hindered triazinylpiperidines, which are substituted in the 1-position, to the polymerization.Type: GrantFiled: May 7, 1992Date of Patent: September 14, 1993Assignee: Ciba-Geigy CorporationInventors: Rolf Mulhaupt, Jean Rody, Mario Slongo
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Patent number: 5238981Abstract: Described are novel reversible photochromic naphthopyran compounds substituted at the number eight carbon atom on the naphtho portion of the naphthopyran ring with, for example, a methoxy group. Also described are organic host materials that contain or that are coated with such compounds. Articles such as ophthalmic lenses or other plastic transparencies that incorporate the novel naphthopyran compounds are also described.Type: GrantFiled: February 24, 1992Date of Patent: August 24, 1993Assignee: Transitions Optical, Inc.Inventor: David B. Knowles
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Patent number: 5235056Abstract: 1-Hydroxy-2,6-diaryl-4-piperidone ketal derivatives, such as the compound of formula I ##STR1## wherein Ar.sub.1 and Ar.sub.2 are each phenyl, R.sub.1 to R.sub.6 are all hydrogen, X.sub.1 and X.sub.2 are each --O-- and T is a direct bond, are novel compounds and are effective process stabilizers, such as polypropylene, for polymers processed at elevated tempertures providing both good melt flow stabilization and good resistance against discoloration during said processing.Type: GrantFiled: April 22, 1992Date of Patent: August 10, 1993Assignee: Ciba-Geigy CorporationInventors: Glen T. Cunkle, Donald J. Sabrsula
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Patent number: 5232969Abstract: Novel moldable, highly stable, normally solid polyoxymethylene resin compositions and molded articles formed of the same include a stabilizing effective amount of an alkoxy-substituted phenoxy-containing compound having the formula (I) or (II):Ar.sup.1 --O--X (I)Ar.sup.2 (--O--X).sub.s (II)where Ar.sup.1 represents an aryl group having no hydroxyl groups directly bonded thereto as a substituent, Ar.sup.2 represents a benzene or naphthalene ring having no hydroxyl groups directly bonded thereto as a substituent, and s represents the number of alkoxy-derivative substituents. Preferably, Ar.sup.1 in formula (I) is a phenyl, biphenyl or naphthyl group, and Ar.sup.2 in formula (II) is benzene (with s being 2). Ar.sup.1 and Ar.sup.2 in formulas (I) and (II) may only be substituted with the --OX group, or may also contain other alkoxy group substituents.Type: GrantFiled: December 19, 1991Date of Patent: August 3, 1993Assignee: Polyplastics Co., Ltd.Inventors: Toshiro Murao, Kaoru Yamamoto, Keiichi Kanaka, Mitsuharu Kusagaya
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Patent number: 5219905Abstract: The present invention relates to novel piperidine compounds of the formula (I) ##STR1## in which A is e.g. a group of the formula ##STR2## where R.sub.4 is e.g. hydrogen or methyl, X.sub.3 is e.g. --O-- or --NH-- and R.sub.5 ' is e.g. ethylene, propylene or decamethylene, R.sub.1 is e.g. methyl, methoxy, ethoxy or OH, R.sub.2 and R.sub.3 are e.g. methyl, m+n is e.g. a number from 1 to 40, n varies e.g. from zero to 50% of the sum m+n, X.sub.1 is e.g. as defined for R.sub.1 or is a group (CH.sub.3).sub.3 SiO-- and X.sub.2 is e.g. hydrogen, methyl, ethyl, a group (CH.sub.3).sub.3 Si-- or a group ##STR3## and, when m+n is a number from 3 to 10, X.sub.1 and X.sub.2 together also form a direct bond. The compounds of the formula (I) are effective in stabilising an organic material against thermal, oxidative and light-induced degradation.Type: GrantFiled: December 11, 1991Date of Patent: June 15, 1993Assignee: Ciba-Geigy CorporationInventors: Primo Carrozza, Valerio Borzatta
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Patent number: 5217650Abstract: Methods for preparing highly conductive, oriented polymers are disclosed. In the preferred embodiment, solution of conductive polymer is cast onto the surface of a stretchable support material, and oriented polymer is produced by removing solvent from the solution and stretching the support material. The invention is particularly useful for preparing oriented films of polyaniline which films have been shown to exhibit conductivities in the range of 300-2,500 S/cm.Type: GrantFiled: March 27, 1990Date of Patent: June 8, 1993Assignee: Trustees of the University of PennsylvaniaInventors: Nicholas Theophilou, Sanjeev Manohar, Elliot Scherr
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Patent number: 5210195Abstract: Polyoxyalkylene diamines react with excess acrylate to form diesters which react with 2,2',6,6'-tetramethyl-4-aminopiperidines to give a product of formula 1, useful as photostabilizer for photosensitive materials.Type: GrantFiled: November 8, 1991Date of Patent: May 11, 1993Assignee: Texaco Chemical Co.Inventors: Jiang-Jen Lin, George P. Speranza
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Patent number: 5210119Abstract: 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: July 3, 1991Date of Patent: May 11, 1993Assignee: General Electric CompanyInventors: Christianus A. A. Claesen, Hideo Koike
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Patent number: 5208278Abstract: Stabilized polyaryl ether ketone molding compositions containing as essential componentsA) from 50 to 99.99% by weight of a polyaryl ether ketone prepared by electrophilic polycondensation and composed to an extent of not less than 50 mol % of units of the formula I' ##STR1## where s and t are each 0, 1, 2 or 3, T and T' are each --0-- or --CO-- and Ar is meta-phenylene, paraphenylene or two aromatic rings linked to each other in the meta or para position by a chemical bond, or the ring-substituted C.sub.1 -C.sub.8 -alkyl, C.sub.6 -C.sub.20 -aryl or halogen derivatives thereof,B) from 0.01 to 4% by weight of at least one organic compound which has a base constant pk.sub.b within the range from 2 to 12 and a boiling point of higher than 300.degree. C.,C) from 0 to 50% by weight of a further thermoplastic other than A), andD) from 0 to 45% by weight of fibrous or particulate fillers or mixtures thereof.Type: GrantFiled: March 29, 1991Date of Patent: May 4, 1993Assignee: BASF AktiengesellschaftInventors: Juergen Koch, Gerhard Heinz
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Patent number: 5204390Abstract: The invention relates to a PSA hot melt composition that exhibits adhesive stability when exposed to ultraviolet light and is stable when contacted with plasticized surfaces.Type: GrantFiled: July 16, 1992Date of Patent: April 20, 1993Assignee: H.B. Fuller CompanyInventors: James P. Szymanski, Eugene R. Simmons, Jeffrey S. Lindquist
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Patent number: 5200444Abstract: Polymer matrices, e.g., halogenated polymers such as PVC, polyolefins, polystyrenes, polyalkadienes, etc., are stabilized against the adverse effects of heat and light, by incorporating therein an effective stabilizing amount of a compound of the formula (I): ##STR1## in which n is a number ranging from 1 to 3, and R is a methyl radical or a hydrogen atom.Type: GrantFiled: December 13, 1990Date of Patent: April 6, 1993Assignee: Rhone-Poulenc ChimieInventors: Michel Gay, Sylvie Lavault
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Patent number: 5200443Abstract: There is disclosed a radiation stabilized fabric of propylene polymer or copolymer of propylene which has improved odor characteristics. Radiation stabilization results from adding by weight 0.25 to 2.0 percent of an acetylated hindered amine light stabilizer known in the art as Cyasorb UV-3668 or by adding by weight 0.25 to 2.0 percent of an oligomeric, hindered amine substituted siloxane such as polymethyl propyl 3-oxy [4- (2, 2, 6, 6-tetramethyl) piperdinyl] siloxane.Type: GrantFiled: March 29, 1991Date of Patent: April 6, 1993Assignee: Kimberly-Clark CorporationInventor: Robert L. Hudson
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Patent number: 5194465Abstract: ABS copolymers and similar styrene or .alpha.-methylstyrene copolymers with contain an elastomer phase are stabilized against light-induced degradation by a) incorporation of a copolymerizable sterically hindered amine in, and b) addition of a non-copolymerizable sterically hindered amine to, the copolymer. Preferred sterically hindered amines are polyalkylpiperidines.Type: GrantFiled: September 30, 1991Date of Patent: March 16, 1993Assignee: Ciba-Geigy CorporationInventors: Bernard Gilg, Gerhard Rytz, Werner Stauffer, Margot Clauss
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Patent number: 5190999Abstract: Compositions comprising an organic material liable to oxidative, thermal and/or actinic degradation and at least one compound of the formula I ##STR1## are described in which n is 1-6, R, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are preferably hydrogen and A is a monovalent radical or polyvalent linking moiety.Some of the compounds of the formula I are novel. They are particularly suitable for the stabilization of lubricating oils, metal processing fluids and hydraulic fluids, and of thermoplastics and elastomers.Type: GrantFiled: June 24, 1991Date of Patent: March 2, 1993Assignee: Ciba-Geigy CorporationInventor: Peter Nesvadba
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Weather-resistant polyacetal resin compositions and weather-resistant molded articles formed thereof
Patent number: 5171770Abstract: Weather-resistant polyacetal compositions and molded parts formed of such compositions including a polyacetal base resin and a weather stabilization packaged which necessarily includes a UV-light stabilizer for the polyacetal resin, and a basic compound which contains at least one tertiary nitrogen atom and at least one metal carboxylate group in its molecule. The compositions of the present invention may optionally include a colorant.Type: GrantFiled: August 1, 1990Date of Patent: December 15, 1992Assignee: Polyplastics Co., Ltd.Inventor: Nozomu Nakagawa -
Patent number: 5169688Abstract: At least one antistatic agent is incorporated into a thermoplastic polymer by contacting a polyvinyl chloride polymer with a solution comprising a solvent capable of swelling the PVC surface and at least one antistatic agent selected from the group consisting of 1-dodecylpyridinium chloride monohydrate and (R.sup.1).sub.n (R.sup.2).sub.m ammonium halide, wherein n and m are integers of from 0-4 and n+m=4, and wherein R.sup.1 and R.sup.2 can be different or the same and are alkyl groups of from 1 to 20 carbon atoms.Type: GrantFiled: February 27, 1991Date of Patent: December 8, 1992Assignee: Atochem North America, Inc.Inventors: Dana S. Garcia, Joseph Silbermann
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Patent number: 5169949Abstract: Disclosed are monomeric hindered amine esters of monocarboxylic resin acids and olefin polymer compositions stabilized therewith.Type: GrantFiled: September 30, 1991Date of Patent: December 8, 1992Assignee: Himont IncorporatedInventor: Charles M. Wright
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Patent number: 5169925Abstract: Novel polymeric polyalkyl-1-oxa-diazaspirodecanes of the formula I ##STR1## are very effective stabilizers for natural any synthetic polymers. They have very low volatility, high migration resistance and high thermal stability.Type: GrantFiled: June 14, 1990Date of Patent: December 8, 1992Assignee: Hoechst AktiengesellschaftInventors: Georg Schmailzl, Gerhard Pfahler, Gunther Nowy
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Patent number: 5166291Abstract: Unsaturated polyester fiber reinforced molding compounds containing low profile additives achieve moldings with improved shrinkage control, improved surface appearance, less separation and lower coefficient of thermal expansion by the addition of lactams.Type: GrantFiled: January 27, 1992Date of Patent: November 24, 1992Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Kenneth E. Atkins, Gary C. Rex
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Patent number: RE34141Abstract: The weather and UV-light resistance of polyacetal resin compositions is improved by incorporating into polyacetal resin a stabilizing package comprised of at least one stabilizing agent selected from benzotriazoles, benzophenones, aromatic benzoates, cyanoacrylates, oxalanilides, and hindered amines, and an acylate resin selected from homopolymers or copolymers of acrylic or methacrylic acid, and ester derivatives thereof.Type: GrantFiled: August 1, 1991Date of Patent: December 8, 1992Assignee: Polyplastics Co., Ltd.Inventor: Sadatsugu Okuda