(c=x)x Group Patents (Class 524/219)
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Patent number: 4839408Abstract: The invention relates to a stabilized polyolefin composition, which composition is stabilized against deterioration caused by contact with heavy metals and improved in coloration properties. This is achieved by blending a polyolefin with:(A) a phenolic compound represented by the formula (I), ##STR1## wherein R.sub.1 represents a C.sub.1 -C.sub.3 alkyl group, (B) a metal deactivator having one or more ##STR2## groups in the side chain, and (C) a sulfur-containing compound represented by the formula (II-1), (II-2), (II-3) or (II-4): ##STR3## wherein R.sub.2 represents a C.sub.4 -C.sub.20 alkyl group, ##STR4## wherein R.sub.3 represents a C.sub.4 -C.sub.20 alkyl group, ##STR5## wherein R.sub.4 represents a C.sub.3 -C.sub.18 alkyl group, and R.sub.5 and R.sub.6 independently represent a hydrogen atom or a C.sub.1 -C.sub.6 alkyl group, ##STR6## wherein R.sub.7 represents a C.sub.3 -C.sub.18 alkyl group.Type: GrantFiled: August 15, 1988Date of Patent: June 13, 1989Assignee: Sumitomo Chemical Company, LimitedInventors: Yoshiharu Fukui, Kazuhisa Kuroda, Tamaki Ishii, Manji Sasaki
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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: 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: 4775709Abstract: An improved melt-processable composition of a thermoplastic polymer selected from the class consisting of hexafluoroisobutylene/vinylidene fluoride copolymer, and ethylene/chlorotrifluoroethylene copolymer, wherein added to said thermoplastic polymer are a phosphite ester and an oxamidoester. A preferred phosphite ester is tris (2,4-di-tert-butylphenyl) phosphite, and a preferred oxamidoester is 2,2'-oxamidobis [ethyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate]. In a preferred composition, about 1 wt. % of phosphite ester and about 0.5 wt. % of oxamidoester are added to a hexafluoroisobutylene/vinylidene fluoride copolymer.Type: GrantFiled: July 6, 1987Date of Patent: October 4, 1988Assignee: Ausimont, U.S.A., Inc.Inventors: Swayambu Chandrasekaran, Nikhil Kundel
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Patent number: 4764550Abstract: Tetrahalophthalate esters are disclosed herein as flame retardant processing aids for polyphenylene ether resins.Type: GrantFiled: August 15, 1986Date of Patent: August 16, 1988Assignee: Pennwalt CorporationInventors: Ronald F. Lovenguth, Joseph M. Bohen
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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: 4757103Abstract: Self-extinguishing polycarbonates consisting of mixtures of polycarbonates with at least one salt of particular carboxylic organic compounds, said salt being of metals of Group I A and/or B, and/or Group II A and/or B of the Periodic Table of elements, and/or of ammonium.Type: GrantFiled: October 23, 1986Date of Patent: July 12, 1988Assignee: Anic, S.p.A.Inventors: Giovanni Dozzi, Salvatore Cucinella, Giorgio Della Fortuna
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Patent number: 4713475Abstract: Long chain (4-hydroxyphenyl) propanoate derivatives of the formula ##STR1## are effective in stabilizing organic materials against oxidative and thermal degradation.Type: GrantFiled: June 12, 1986Date of Patent: December 15, 1987Assignee: Ciba-Geigy CorporationInventors: John D. Spivack, David H. Steinberg, Paul A. Odorisio
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Patent number: 4668725Abstract: Organic compounds of phenolic nature for stabilizing organic polymers are described together with the process for preparing said stabilizing compounds. Stabilized polymer compositions incorporating said stabilizing compounds are also described.Type: GrantFiled: October 16, 1985Date of Patent: May 26, 1987Assignees: Enichem Sintesi S.p.A., Bozzetto Industrie Chimiche S.p.A.Inventors: Fabio Broussard, Carlo Busetto
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Patent number: 4663375Abstract: A process for producing a thermoplastic resin molding which comprises adding to a thermoplastic resin an organic compound which is compatible with said thermoplastic resin to form a homogeneous phase at a molten state of said thermoplastic resin and causes phase separation by cooling, molding the composition by melting, and solidifying it by cooling; and the molding thus obtained.Type: GrantFiled: May 10, 1985Date of Patent: May 5, 1987Assignee: Mitsubishi Petrochemical Co., Ltd.Inventor: Yutaka Tamura
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Patent number: 4645853Abstract: Novel hindered phenolic compounds derived from oxamides are disclosed which are useful as stabilizers of synthetic polymer resins.Type: GrantFiled: August 30, 1985Date of Patent: February 24, 1987Assignee: ICI Americas Inc.Inventors: John F. Stephen, Jerry H. Smith, Makram H. Meshreki
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Patent number: 4634728Abstract: Polyol carboxyalkylthioalkanoamidophenol compounds useful in the stabilization of organic materials normally susceptible to oxidative degradation are prepared by (A) reaction of an appropriate polythiol, which is a selected tetra-(mercapto alkanoic acid) ester of pentaerythritol or a selected tri-(mercapto alkanoic acid) ester of a selected 1,1,1-trimethylolalkane, with an appropriate alkenyl compound, which is a selected N-alkenoyl[4-amino(mono- or dialkyl)phenol] or (B), where the alkanol moiety is a sole methylene group, by reaction of pentaerythritol or an appropriate 1,1,1-trimethylolalkane with an appropriate mercapto-N(mono- or di-alkyl-4-hydroxyphenylalkamide) alkanoic acid. In a preferred embodiment, the compound is pentaerythritol tetrakis[3-mercapto-N-(3',5'-di-ti-butyl-4'-hydroxyphenyl propanamide) propionate].Type: GrantFiled: August 20, 1985Date of Patent: January 6, 1987Assignee: Mallinckrodt, Inc.Inventors: Neil Dunski, Ali A. Bazzi, Henry J. Buehler
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Patent number: 4616051Abstract: Organic materials such as polypropylene are stabilized with a mixture of(A) N,N'-bis[2-(3-[3,5-di-t-butyl-hydroxyphenyl]propionyloxy)ethyl]oxamide with one of the following stabilizers:(B.sub.1) 2-hydroxy-4-n-octoxybenzophenone;(B.sub.2) 2-(3,5-di-t-butyl-5-hydroxyphenyl)-5-chlorobenzotriazole; or(B.sub.3) N-hydroxyethyl-2,2,6,6-tetramethylpiperidino succinic acid ester.Type: GrantFiled: September 13, 1982Date of Patent: October 7, 1986Assignee: Uniroyal Chemical Company, Inc.Inventor: Paula A. Paolino
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Patent number: 4552926Abstract: The title compounds correspond to the formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are alkyl, A is alkylene, X is --NH-- or --S--, m is 1 and n is 0 or 1, and are useful as stabilizers for organic polymers and lubricating oils to counteract the degradative effects of heat, light and air.Type: GrantFiled: September 26, 1983Date of Patent: November 12, 1985Assignee: Ciba-Geigy CorporationInventors: John D. Spivack, Stephen D. Pastor
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Patent number: 4546137Abstract: An additive combination for improving the cold flow properties of distillate fuels comprises a combination of:(A) a distillate flow improver which is an ethylene containing polymer, preferably a copolymer of ethylene with unsaturated esters, e.g. vinyl acetate;(B) a hydrocarbon polymer of C.sub.2 to C.sub.30 olefin of number average molecular weight of 10.sup.3 to 10.sup.6 or derivatized version thereof, for example copolymers of ethylene and propylene, or polyisobutylene, which are used as lubricating oil V.I. improvers; and(C) a polar oil soluble compound which includes amides, salts, carboxylates, sulfonates, sulfates, phosphates, phenates and borates, having hydrocarbon solubilizing groups, for example salts and amides of polycarboxylic acid such as phthalic anhydride reacted with hydrogenated secondary tallow amine.Type: GrantFiled: December 20, 1982Date of Patent: October 8, 1985Assignee: Exxon Research & Engineering Co.Inventors: Albert Rossi, David H. Rehrer, Alexis A. Oswald, Kenneth Lewtas, Robert D. Tack
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Patent number: 4537728Abstract: Novel polycarboxy benzene dianhydrides useful as surfactants are disclosed. The novel compounds of this invention are pyromellitate tetraesters wherein two ester moieties characteristically contain fluorinated alkyl groups or saturated hydrocarbon alkyl groups and wherein two ester moieties contain alkylene moieties having a terminal halogen.Type: GrantFiled: September 30, 1982Date of Patent: August 27, 1985Assignee: Allied CorporationInventors: Bryce C. Oxenrider, David J. Long
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Patent number: 4464496Abstract: A non-yellowing antioxidant-UV stabilizer combination especially useful in AES polymers comprising(A) at least one antioxidant selected from the group consisting of:(i) a thiodialkylene bis-(3,5-dialkyl-4-hydroxy) hydrocinnamate antioxidant;(ii) An N,N'-alkylene bis-(3,5-dialkyl-4-hydroxy) hydrocinnamamide antioxidant;(iii) an O,O-dialkyl-3,5-dialkyl-4-hydroxybenzyl phosphonate antioxidant;(iv) an oxamidobis alkyl (3,5)-dialkyl-4-hydroxyphenyl) propionate antioxidant; and(v) a [3-(3,5-dialkyl-4-hydroxyphenyl)propionamido]alkyl stearate antioxidant; and(B) a UV stabilizer package comprising:(vi) at least one UV stabilizer of the hindered amine type, with or without(vii) at least one UV absorber.Type: GrantFiled: March 26, 1982Date of Patent: August 7, 1984Assignee: Uniroyal, Inc.Inventors: Thomas L. Nemzek, Brendan J. Geelan
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Patent number: 4376189Abstract: Rubber compositions comprising diene rubber and N-carbamoyl maleamic acid, N-thiocarbamoyl maleamic acid or derivatives thereof exhibit improved green strength or tack properties. Treatment of diene rubber above 130.degree. C. with the same compounds is shown to be effective in obtaining rubber compositions of improved properties.Type: GrantFiled: November 17, 1981Date of Patent: March 8, 1983Assignee: Monsanto CompanyInventor: Chester D. Trivette
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Patent number: 4366278Abstract: A flame retardant silicone rubber with improved flame retardant properties and colorability can be obtained from a polydiorganosiloxane, a silica filler, a carboxamide, a platinum, an organic peroxide, and optionally cerium oxide or cerium hydroxide.Type: GrantFiled: March 20, 1981Date of Patent: December 28, 1982Assignee: Toray Silicone Co., Ltd.Inventors: Mitsuo Hamada, Sadami Yasuda
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Patent number: 4359570Abstract: Disclosed are colored polyester compositions containing copolymerized anthraquinone dyes as colorants, which compositions may be used, for example, for food packaging and to mold colored beverage bottles. The copolymerized dyes are thermally stable at the processing temperatures, and are colorfast and nonextractable. The useful dyes have the general formula: ##STR1## wherein either or both of rings A and B may contain in any position thereon one or two groups of the formula ##STR2## R and R.sup.3 each is hydrogen, lower alkyl or lower hydroxyalkyl; R.sup.1, R.sup.2, R.sup.4 and R.sup.5 each is hydrogen or 1-3 substituents such as lower alkyl, lower alkoxy, phenyl, Cl, Br, or the like; X is --S-- or --NH--; n is 1 or 2; m is 0, 1, or 2.Type: GrantFiled: October 26, 1981Date of Patent: November 16, 1982Assignee: Eastman Kodak CompanyInventors: Thomas G. Davis, Max A. Weaver
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Patent number: 4346024Abstract: Heat-stable polyphase polyamido compositions having improved mechanical properties are comprised of (i) from 55 to 99% by weight of a nylon polyamide resin matrix, said polyamide resin having a number-average molecular weight of at least 5,000, and (ii) from 1 to 45% by weight of a particulate disperse phase, said particulates having a particle size ranging from 0.01 to 10.mu., and said disperse phase comprising a polyesteramide having a content in amide groups of less than 40% of the amide groups comprising said polyamide matrix resin and a glass transition temperature of less than 5.degree. C.Type: GrantFiled: December 5, 1980Date of Patent: August 24, 1982Assignee: Rhone-Poulenc IndustriesInventors: Jean Coquard, Jean Goletto
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Patent number: 4325855Abstract: Adhesive compositions containing an adhesive polymer, a dispersant for the polymer and a gelling agent which is a salt of a compound of the formula: ##STR1## wherein R is hydrogen or alkyl of 1 to 18 carbon atoms and R.sub.1 is a hydrocarbon group of 1 to 18 carbon atoms.Type: GrantFiled: May 24, 1976Date of Patent: April 20, 1982Assignee: Lingner and Fischer GmbHInventors: Heinz H. Dickmann, Dieter Hechenberger, Richard Krattner