(c=x)x Group Patents (Class 524/219)
  • Patent number: 4839408
    Abstract: 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: Grant
    Filed: August 15, 1988
    Date of Patent: June 13, 1989
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Yoshiharu Fukui, Kazuhisa Kuroda, Tamaki Ishii, Manji Sasaki
  • Patent number: 4812501
    Abstract: 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: Grant
    Filed: March 16, 1988
    Date of Patent: March 14, 1989
    Assignee: Ciba-Geigy Corporation
    Inventors: Paul A. Odorisio, Stephen D. Pastor, James L. Hyun
  • Patent number: 4812500
    Abstract: 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: Grant
    Filed: September 30, 1987
    Date of Patent: March 14, 1989
    Assignee: Shell Oil Company
    Inventor: Earl E. Hayden
  • Patent number: 4775709
    Abstract: 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: Grant
    Filed: July 6, 1987
    Date of Patent: October 4, 1988
    Assignee: Ausimont, U.S.A., Inc.
    Inventors: Swayambu Chandrasekaran, Nikhil Kundel
  • Patent number: 4764550
    Abstract: Tetrahalophthalate esters are disclosed herein as flame retardant processing aids for polyphenylene ether resins.
    Type: Grant
    Filed: August 15, 1986
    Date of Patent: August 16, 1988
    Assignee: Pennwalt Corporation
    Inventors: Ronald F. Lovenguth, Joseph M. Bohen
  • Patent number: 4757102
    Abstract: 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: Grant
    Filed: May 12, 1986
    Date of Patent: July 12, 1988
    Assignee: Ciba-Geigy Corporation
    Inventors: Ramanathan Ravichandran, Stephen D. Pastor, Thomas E. Snead
  • Patent number: 4757103
    Abstract: 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: Grant
    Filed: October 23, 1986
    Date of Patent: July 12, 1988
    Assignee: Anic, S.p.A.
    Inventors: Giovanni Dozzi, Salvatore Cucinella, Giorgio Della Fortuna
  • Patent number: 4713475
    Abstract: Long chain (4-hydroxyphenyl) propanoate derivatives of the formula ##STR1## are effective in stabilizing organic materials against oxidative and thermal degradation.
    Type: Grant
    Filed: June 12, 1986
    Date of Patent: December 15, 1987
    Assignee: Ciba-Geigy Corporation
    Inventors: John D. Spivack, David H. Steinberg, Paul A. Odorisio
  • Patent number: 4668725
    Abstract: 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: Grant
    Filed: October 16, 1985
    Date of Patent: May 26, 1987
    Assignees: Enichem Sintesi S.p.A., Bozzetto Industrie Chimiche S.p.A.
    Inventors: Fabio Broussard, Carlo Busetto
  • Patent number: 4663375
    Abstract: 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: Grant
    Filed: May 10, 1985
    Date of Patent: May 5, 1987
    Assignee: Mitsubishi Petrochemical Co., Ltd.
    Inventor: Yutaka Tamura
  • Patent number: 4645853
    Abstract: Novel hindered phenolic compounds derived from oxamides are disclosed which are useful as stabilizers of synthetic polymer resins.
    Type: Grant
    Filed: August 30, 1985
    Date of Patent: February 24, 1987
    Assignee: ICI Americas Inc.
    Inventors: John F. Stephen, Jerry H. Smith, Makram H. Meshreki
  • Patent number: 4634728
    Abstract: 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: Grant
    Filed: August 20, 1985
    Date of Patent: January 6, 1987
    Assignee: Mallinckrodt, Inc.
    Inventors: Neil Dunski, Ali A. Bazzi, Henry J. Buehler
  • Patent number: 4616051
    Abstract: 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: Grant
    Filed: September 13, 1982
    Date of Patent: October 7, 1986
    Assignee: Uniroyal Chemical Company, Inc.
    Inventor: Paula A. Paolino
  • Patent number: 4552926
    Abstract: 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: Grant
    Filed: September 26, 1983
    Date of Patent: November 12, 1985
    Assignee: Ciba-Geigy Corporation
    Inventors: John D. Spivack, Stephen D. Pastor
  • Patent number: 4546137
    Abstract: 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: Grant
    Filed: December 20, 1982
    Date of Patent: October 8, 1985
    Assignee: Exxon Research & Engineering Co.
    Inventors: Albert Rossi, David H. Rehrer, Alexis A. Oswald, Kenneth Lewtas, Robert D. Tack
  • Patent number: 4537728
    Abstract: 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: Grant
    Filed: September 30, 1982
    Date of Patent: August 27, 1985
    Assignee: Allied Corporation
    Inventors: Bryce C. Oxenrider, David J. Long
  • Patent number: 4464496
    Abstract: 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: Grant
    Filed: March 26, 1982
    Date of Patent: August 7, 1984
    Assignee: Uniroyal, Inc.
    Inventors: Thomas L. Nemzek, Brendan J. Geelan
  • Patent number: 4376189
    Abstract: 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: Grant
    Filed: November 17, 1981
    Date of Patent: March 8, 1983
    Assignee: Monsanto Company
    Inventor: Chester D. Trivette
  • Patent number: 4366278
    Abstract: 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: Grant
    Filed: March 20, 1981
    Date of Patent: December 28, 1982
    Assignee: Toray Silicone Co., Ltd.
    Inventors: Mitsuo Hamada, Sadami Yasuda
  • Patent number: 4359570
    Abstract: 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: Grant
    Filed: October 26, 1981
    Date of Patent: November 16, 1982
    Assignee: Eastman Kodak Company
    Inventors: Thomas G. Davis, Max A. Weaver
  • Patent number: 4346024
    Abstract: 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: Grant
    Filed: December 5, 1980
    Date of Patent: August 24, 1982
    Assignee: Rhone-Poulenc Industries
    Inventors: Jean Coquard, Jean Goletto
  • Patent number: 4325855
    Abstract: 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: Grant
    Filed: May 24, 1976
    Date of Patent: April 20, 1982
    Assignee: Lingner and Fischer GmbH
    Inventors: Heinz H. Dickmann, Dieter Hechenberger, Richard Krattner