Sulfur Directly Bonded To Tin Patents (Class 524/180)
  • Patent number: 10233370
    Abstract: A formed body including: a polytetrafluoroethylene or a modified polytetrafluoroethylene; and an unmodified polymerization inhibitor, the content of the unmodified polymerization inhibitor being 0.02 to 15 wt %.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: March 19, 2019
    Assignee: NICHIAS CORPORATION
    Inventors: Kengo Iwahara, Mitsuru Fujimoto, Katsutoyo Itoi, Michio Machii, Masaki Yokoya
  • Patent number: 9120832
    Abstract: A compound represented by formula I or II and a method for preparing the same. The method includes: a) adding isooctyl mercaptopropionate to a reactor, adding dropwise an aqueous solution of methyltin chloride, stirring and allowing for a complete reaction, and adding aqueous ammonia, an aqueous solution of sodium hydroxide, an aqueous solution of sodium bicarbonate, an aqueous solution of sodium carbonate, or a solution of an organic base to regulate the pH value of a resulting mixture from a starting value of between 2 and 8 to an end value of between 6 and 10 for a primary stage of esterification; and b) allowing a product obtained from step a) to proceed to a secondary stage of the esterification, allowing the product to stand until phases are separated, collecting and washing an organic phase using deionized water, allowing a resulting mixture to stand until phases are separated.
    Type: Grant
    Filed: May 5, 2014
    Date of Patent: September 1, 2015
    Assignee: YUNNAN TIN COMPANY LIMITED
    Inventors: Yinghui Guo, Laoyong Yan, Baoliang Zhao, Qiangshun Yi, Bing Wei, Xiangyan Li, Shu Chen, Fuliang Duan
  • Publication number: 20150112006
    Abstract: An alkyl-tin stabilizer composition is treated with a calcium compound to reduce the carboxylate content level of the stabilizer.
    Type: Application
    Filed: October 17, 2014
    Publication date: April 23, 2015
    Inventors: Scott CHAMBERS, Davide ACHILUZZI, Chris TURNBULL, Anna JANKOWSKI
  • Publication number: 20140322469
    Abstract: The present invention relates to the thermal stabilization of halogen containing polymer compositions. More particularly the invention relates to a tin stabilizer composition for chlorine containing polymers, and more specifically a composition comprising a mono alkyltin compound as major compound of the tin stabilizer composition and a co-stabilizer. The present invention relates as well to the use of a mono alkyl tin compound as major compound of the tin stabilizer and a co-stabilizer as heat stabilizers for processing chlorine containing polymer composition.
    Type: Application
    Filed: April 13, 2012
    Publication date: October 30, 2014
    Applicant: PMC ORGANOMETALLIX, INC.
    Inventors: Anne Chabrol, Isabelle Tartarin, Berth Jan Deelman
  • Patent number: 8614268
    Abstract: This invention relates to the thermal stabilization of halogen-containing polymer compositions, more particularly, this invention relates to a poly(vinyl chloride) (PVC) or a chlorinated polyvinyl chloride (cPVC) composition comprising an alkyl tin stabilizer and at least one salt of a polymeric polyacid such as a polycarboxylic acid salt supported on a polymeric material.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: December 24, 2013
    Assignee: Rohm and Haas Company
    Inventors: Eric G. Lundquist, Jian-Yang Cho
  • Patent number: 8513340
    Abstract: A method for reducing chatter in an extrusion process, which includes the steps of preparing an extrusion composition by combining a polymer composition with a chatter-reducing formulation, and extruding the extrusion composition to provide a substantially continuous extrudate. The chatter-reducing formulation comprises an alkyltin mercaptide and dibutyltin dilaurate. The resultant extrudate exhibits reduced chatter, which is categorized according to the Reed Scale as less than or equal to 2.
    Type: Grant
    Filed: April 8, 2011
    Date of Patent: August 20, 2013
    Assignee: Georgia Gulf Corporation
    Inventors: Scott Chambers, Perry Reed, Tara Patterson
  • Patent number: 8168704
    Abstract: An adhesive composition includes a base polymer, the base polymer including a copolymer having at least one (meth)acrylic ester with a halogen element and at least one (meth)acrylate in a copolymeric unit, and an antistatic agent, the antistatic agent including an ionic compound.
    Type: Grant
    Filed: August 12, 2008
    Date of Patent: May 1, 2012
    Assignee: Cheil Industries, Inc.
    Inventors: Hiroshi Ogawa, Tatsuhiro Suwa, Cheong Hun Song
  • Publication number: 20120029126
    Abstract: A method for reducing chatter in an extrusion process, which includes the steps of preparing an extrusion composition by combining a polymer composition with a chatter-reducing formulation, and extruding the extrusion composition to provide a substantially continuous extrudate. The chatter-reducing formulation comprises an alkyltin mercaptide and dibutyltin dilaurate. The resultant extrudate exhibits reduced chatter, which is categorized according to the Reed Scale as less than or equal to 2.
    Type: Application
    Filed: April 8, 2011
    Publication date: February 2, 2012
    Applicant: ROYAL GROUP, INC.
    Inventors: Scott Chambers, Perry Reed, Tara Patterson
  • Patent number: 8088937
    Abstract: Disclosed herein are compounds of the formula: (R)x—Sn—(R?)4-x wherein: R is alkyl; R? is a moiety selected from the group consisting of: w is 0 or 1; x is 1 or 2; y is 1, 2, 3, or 4; and Z is a linear, branched, cyclic, or aromatic hydrocarbon. These compounds are excellent stabilizers for halogen-containing resins, such as PVC.
    Type: Grant
    Filed: July 8, 2010
    Date of Patent: January 3, 2012
    Assignee: Galata Chemicals, LLC
    Inventors: Edward Krainer, Peter Frenkel
  • Patent number: 8062709
    Abstract: A process for preparing polyurethane carpet backings uses a filled polyurethane-forming composition that contains a mixture of certain metal acetylacetonate and sulfur-containing organotin catalysts. The mixture of catalysts is particularly beneficial in instances where the composition is processed at temperatures of above 30 to about 500 C, as long pot life is provided together with a rapid thermally-induced cure.
    Type: Grant
    Filed: March 19, 2007
    Date of Patent: November 22, 2011
    Assignee: Dow Global Technologies LLC
    Inventor: Randall C. Jenkines
  • Publication number: 20100280155
    Abstract: An alkyltin compound of specified formula which has utility as an excellent stabilizer for a halogen-containing resin. The alkyltin compound has from 1-3 terminal thiol groups.
    Type: Application
    Filed: July 13, 2010
    Publication date: November 4, 2010
    Applicant: GALATA CHEMICALS, LLC
    Inventors: Edward Krainer, Peter Frenkel, Mukund Shah, Perry Reed, David J. Sikora
  • Publication number: 20100267872
    Abstract: This invention relates to the thermal stabilization of halogen-containing polymer compositions, more particularly, this invention relates to a poly(vinyl chloride) (PVC) or a chlorinated polyvinyl chloride (cPVC) composition comprising an alkyl tin stabilizer and at least one salt of a polymeric polyacid such as a polycarboxylic acid salt supported on a polymeric material.
    Type: Application
    Filed: March 26, 2010
    Publication date: October 21, 2010
    Inventors: Eric G. Lundquist, Jian-Yang Cho
  • Patent number: 7781504
    Abstract: Disclosed herein are compounds of the formula: (R)x—Sn—(R?)4-x wherein: R is alkyl; R? is a moiety selected from the group consisting of: w is 0 or 1; x is 1 or 2; y is 1, 2, 3, or 4; and Z is a linear, branched, cyclic, or aromatic hydrocarbon. These compounds are excellent stabilizers for halogen-containing resins, such as PVC.
    Type: Grant
    Filed: December 5, 2006
    Date of Patent: August 24, 2010
    Assignee: Galata Chemicals, LLC
    Inventors: Edward Krainer, Peter Frenkel
  • Patent number: 7767740
    Abstract: An alkyltin compound of specified formula which has utility as an excellent stabilizer for a halogen-containing resin. The alkyltin compound has from 1-3 terminal thiol groups.
    Type: Grant
    Filed: May 5, 2005
    Date of Patent: August 3, 2010
    Assignee: Galata Chemicals, LLC
    Inventors: Edward Krainer, Peter Frenkel, Mukund Shah, Perry Reed, David J. Sikora
  • Patent number: 7531587
    Abstract: Stabilizer compositions are used to stabilize halogen-containing vinyl polymers from, for example, degradation and discoloration. The stabilizer compositions comprise a mercaptoester, a reverse mercaptoester, and a Lewis acid.
    Type: Grant
    Filed: July 28, 2006
    Date of Patent: May 12, 2009
    Assignee: Rohm and Haas Company
    Inventor: Gene Kelly Norris
  • Patent number: 7423081
    Abstract: Thermoplastic formulations to manufacture pipe and fluid accessories for home and industrial use comprising a polyvinyl chlorinated thermoplastic compound (CPVC) at a level up to 100 phr, oxidizing agents, polymer promoter agents, and impact modifier agents characterized because it includes a blend of internal and external lubricant agents based on: paraffinic wax selected from paraffinic wax from calcium stearate, polyethylene wax, oxidized polyethylene wax, stearic acid and fatty acid waxes, polyethylene wax, homopolymer of oxidized ethylene, paraffinic wax and mercaptide thermostabilizing agents.
    Type: Grant
    Filed: March 7, 2005
    Date of Patent: September 9, 2008
    Assignee: Servicios Condumex S.A. de C.V.
    Inventors: Octavio Parra Tabla, Luis Vazquez Estrada, Alfonso Perez Sanchez
  • Publication number: 20080132621
    Abstract: Disclosed herein are compounds of the formula: (R)x—Sn—(R?)4-x wherein: R is alkyl; R? is a moiety selected from the group consisting of: w is 0 or 1; x is 1 or 2; y is 1, 2, 3, or 4; and Z is a linear, branched, cyclic, or aromatic hydrocarbon. These compounds are excellent stabilizers for halogen-containing resins, such as PVC.
    Type: Application
    Filed: December 5, 2006
    Publication date: June 5, 2008
    Inventors: Edward Krainer, Peter Frenkel
  • Patent number: 7238739
    Abstract: Poly(vinyl chloride) is compounded with a chalk-like, essentially pure calcium carbonate to provide improved weathering resistance of rigid poly(vinyl chloride) articles subjected to external exposures of heat and sunlight. Blends and alloys are also disclosed. Optionally, one can add either zinc alkyl ester scavenger, organotin stabilizer, or both to further improve the effectiveness of the essentially pure calcium carbonate.
    Type: Grant
    Filed: March 13, 2003
    Date of Patent: July 3, 2007
    Assignee: PolyOne Corporation
    Inventors: Roman B. Hawrylko, Peter W. Krause, Michel Levesque
  • Patent number: 7087193
    Abstract: A stabilizer composition, for use in polyvinyl chloride formulations, that is a mixture of: at least one organotin sulfide; at least one organotin chloride; and at least one free mercaptan.
    Type: Grant
    Filed: November 27, 2001
    Date of Patent: August 8, 2006
    Assignee: Akzo Nobel N.V.
    Inventor: Henry J. Barda
  • Patent number: 6919392
    Abstract: The heat and light stability imparted to vinyl halide polymers by metal compounds conventionally employed for this purpose is considerably improved by the presence of a mercapto ester such as 2-mercaptoethyl stearate. The esters can replace a substantial portion of the metal compound with no significant reduction in stability.
    Type: Grant
    Filed: April 20, 1992
    Date of Patent: July 19, 2005
    Assignee: Arkema Inc.
    Inventors: Jean-Yves Chenard, Jean-Claude Mendelsohn
  • Patent number: 6878310
    Abstract: A stabilizer composition, suitable for use in polyvinyl chloride compositions, can be formed by reacting a mixture of monoalkyltin trichloride, such as butyltin trichloride, and dialkyltin dichloride, such as dibutyltin dichloride, with at least one carboxylic acid, such as 2-ethylhexanoic acid, and 2-mercaptoethanol, in the presence of base, followed by reaction of the resulting product with a sulfide reagent, such as sodium sulfide. The final composition comprises a complex mixture of alkyl tin carboxylates and/or mercaptides, and of monoalkyltin sulfides and dialkyltin sulfides.
    Type: Grant
    Filed: November 27, 2001
    Date of Patent: April 12, 2005
    Assignee: Akzo Nobel N.V.
    Inventor: Henry J. Barda
  • Patent number: 6846861
    Abstract: A pleasant fragrance is imparted to the stabilizatiin of a halogen-containing polymer by the use of an organotin mercaptoalkyl heptanoate, and, optionally, up to about 50%, on an equivalents basis, of a sulfide thereof as the stabilizer. A mixture of the heptanoate with up to about 80% by weight of the mixture of a second carboxylate having from 8 to 20 carbon atoms in the carboxylate moiety may be used in place of the heptanoate.
    Type: Grant
    Filed: September 29, 2001
    Date of Patent: January 25, 2005
    Assignee: Rohm and Haas Company
    Inventors: Bruce C. Herzig, Gary M. Conroy, Paul B. Adams, Michael E. Skladani, Gene K. Norris
  • Publication number: 20030176544
    Abstract: Rigid PVC resins are compounded with a chalk-like Caribbean micritic calcium carbonate to provide improved weathering resistance of rigid PVC articles subjected to external exposures of heat and sunlight. The effective resistance to heat and sunlight is substantially increased by rigid PVC resins compounded with European chalk and Caribbean micritic calcium carbonate, zinc dialkyl ester scavenger and organotin stabilizer to provide considerably increased PVC degradation resistance.
    Type: Application
    Filed: March 15, 2002
    Publication date: September 18, 2003
    Applicant: PolyOne Corporation
    Inventors: Roman Bohdan Hawrylko, Peter Wolfgang Krause, Michel Levesque
  • Patent number: 6617392
    Abstract: The present invention provides the molding composition of siloxane, which is capable of extending mold lifetime where inhibitors alkene or acetylene polymerization are mixed in the molds composed of siloxane. The inhibitors can effectively inhibit the release of alkene or acetylene when a resin containing an alkene or acetylene is poured into the molds which extends lifetime of molds composed of siloxane. The inhibitors are compounds containing primarily sulfur, wherein sulfur is the most effective.
    Type: Grant
    Filed: January 3, 2002
    Date of Patent: September 9, 2003
    Inventor: Wen-Chen Yang
  • Publication number: 20030166752
    Abstract: The present invention relates to a halogen containing polymer compound containing a modified zeolite stabilizer. The modified zeolite stabilizer has a small particle diameter, narrow particle size distribution and less than 10 weight percent water. The modified zeolite stabilizer is formed by shock annealing, coating or a combination of the two methods.
    Type: Application
    Filed: March 7, 2003
    Publication date: September 4, 2003
    Applicant: Noveon IP Holdings Corp.
    Inventors: Robert E. Detterman, Nancy A. Hamerly, Carole A. Lepilleur, Anthony M. Mazany, David L. Milenius, Arthur L. Backman
  • Patent number: 6531526
    Abstract: The present invention relates to a halogen containing polymer compound containing a modified zeolite stabilizer. The modified zeolite stabilizer has a small particle diameter, narrow particle size distribution and less than 10 weight percent water. The modified zeolite stabilizer is formed by shock annealing, coating or a combination of the two methods.
    Type: Grant
    Filed: March 9, 2000
    Date of Patent: March 11, 2003
    Assignee: Noveon IP Holdings Corp.
    Inventors: Robert E. Detterman, Nancy A. Hamerly, Carole A. Lepilleur, Anthony M. Mazany, David L. Milenius, Arthur L. Backman
  • Patent number: 6531533
    Abstract: Halogen-containing polymers or the recyclates thereof are stabilized by the addition of (a) a halogen-containing polymer or a recyclate thereof; (b) at least one zeolite in the form of sodium, potasssium and/or lithium, in particular at least one zeolite of formula M2O.Al2O3.x SiO2.y H2O  (I), wherein M is Na, K or Li, x is 2 to 12, and y is 1 to 15, with the exception of zeolite A, Na12Al12Si12O48.27 H2O and clinoptilolite Na6Al6Si30O72.2 H2O, (c) at least one organic zinc, aluminium or rare earth compound, and/or (d) at least one organotin compound, as described in more detail in claim 1.
    Type: Grant
    Filed: February 12, 1997
    Date of Patent: March 11, 2003
    Assignee: Crompton Vinyl Additives GmbH
    Inventors: Karl Josef Kuhn, Wolfgang Wehner, Rolf Drewes
  • Patent number: 6258880
    Abstract: Stabilizer compositions useful for protecting clear polyvinyl chloride and other clear halogenated polymer compositions against discoloration and degradation caused by exposure to light and weathering in addition to heat comprising an organotin compound selected from the group consisting of organotin mercaptides, sulfides of organotin mercaptides, organotin sulfides, and/or organotin carboxylates, and a free phenyl salicylate compound. These stabilizers offer improved ultraviolet light stability and weatherability to clear polyvinyl chloride resins designed for weatherable applications without detracting from the desired thermal performance. Clear polyvinyl chloride resin and other clear halogenated polymer compositions are also provided, containing these compounds.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: July 10, 2001
    Assignee: Morton International, Inc.
    Inventors: Gary M. Conroy, Gene K. Norris
  • Patent number: 6225387
    Abstract: An organohalide-flame retardant polymer containing as a stabilizer blend: a) an acid scavenger, for example a hydrotalcite or an amorphous basic aluminum magnesium carbonate; b) a heat stabilizer comprising an organotin compound; and c) a polyhydroxyaliphatic costabilizer.
    Type: Grant
    Filed: February 17, 2000
    Date of Patent: May 1, 2001
    Assignee: Great Lakes Chemical Corporation
    Inventors: Donald Robert Hallenbeck, Cindy Nancy Doumen, Anne-Marie Prins
  • Patent number: 5969015
    Abstract: Compositions, comprising (i) a halogen-containing polymeric material, and(ii) at least one phosphite of formula I ##STR1## wherein n is a number from 1 to 6,R is a divalent linking group of formulae as defined herein as well as of novel compounds of formula I and their use as stabilisers.
    Type: Grant
    Filed: September 10, 1997
    Date of Patent: October 19, 1999
    Assignee: Witco Vinyl Additives GmbH
    Inventors: Horst Zinke, Karl Josef Kuhn, Wolfgang Wehner
  • Patent number: 5670563
    Abstract: The invention relates to compositions comprisinga) a chlorine-containing polymerb) at least one organotin compound andc) at least one phosphorus compound of formula(R.sub.7 S).sub.3 P.dbd.X.sub.nwherein the meaning of the individual substituents is as defined in the disclosure.
    Type: Grant
    Filed: July 17, 1995
    Date of Patent: September 23, 1997
    Assignee: Ciba-Specialty Chemicals Corporation
    Inventors: Horst Zinke, Johannes Kaufhold
  • Patent number: 5582873
    Abstract: The present invention relates to a method of making stabilized halogen containing organic polymer laminate comprising as one layer a halogen-containing organic polymer, an acid scavenger comprising a molecular sieve or zeolite; and a heat stabilizer and as the other layer, a similar composition devoid of a molecular sieve or zeolite.
    Type: Grant
    Filed: August 17, 1995
    Date of Patent: December 10, 1996
    Assignee: Carol M. Botsolas
    Inventor: Nirav Desai
  • Patent number: 5539055
    Abstract: An antistatic nonflammable resin composition comprising: (A) 30 to about 80 weight percent a styrene resin; (B) 70 to about 20 weight percent of a vinyl chloride resin; (C) 0.5 to about 5 weight parts based on (A)+(B) of at least one antistatic agent selected from the group consisting of alkyl sulfonates and alkyl benzene sulfonates; and (D) 0.1 to about 5 weight parts based on (A)+(B) of at least one organic tin stabilizer containing sulfur. Molded articles from said composition possess a good appearance, excellent antistatic property and dust-repellency on the surface thereof.
    Type: Grant
    Filed: February 15, 1995
    Date of Patent: July 23, 1996
    Assignee: Kanegafuchi Kagaku Kogyo Kabushiki Kaisha
    Inventors: Kenji Nishimoto, Yoshihiko Hashimoto
  • Patent number: 5532303
    Abstract: The presence of ammonium halide in a PVC composition along with conventional primary heat stabilizers enhances the heat stability during the early stages of extrusion into pipe and other articles of manufacture. The ammonium halide which is formed as a by-product of the reaction of a metal halide such as zinc chloride or an organotin chloride with a mercaptoester in the presence of ammonia or an amine may be left in the product or a separate source of the ammonium halide may be used to provide the enhanced heat stability.
    Type: Grant
    Filed: April 27, 1995
    Date of Patent: July 2, 1996
    Assignee: Morton International, Inc.
    Inventors: George F. Beekman, Gary M. Conroy, Jeffrey R. Hyde, Gene K. Norris
  • Patent number: 5527842
    Abstract: Disclosed are liquid stabilizer compositions useful in polyvinyl chloride formulations and which exhibit a reduced tendency to form precipitates on standing, comprising one or more aromatic ether alcohols of the formula (1)Ar--O--(CH.sub.2 CH(X)O).sub.n H (1)wherein Ar is aryl, X is --H or --CH.sub.3, and n is 1 to 5, and one or more thioglycolates of the formula (2)(R.sup.1).sub.a Sn(--SCH.sub.2 COOR.sup.2).sub.4-a (2)wherein R.sup.1 is C.sub.1-4 alkyl, a is 1-2, and R.sup.2 is C.sub.7-16 alkyl.
    Type: Grant
    Filed: March 10, 1995
    Date of Patent: June 18, 1996
    Assignee: Witco Corporation
    Inventor: Samuel Hoch
  • Patent number: 5464896
    Abstract: A stabilized halogen-containing resin composition contains 100 parts by weight of a halogenated polymer of an ethylenically unsaturated monomer, 0.01 to 5 parts by weight of at least one member selected from a perchloric acid-containing hydrotalcite compound and perchloric acid salt, and 0.01 to 10 parts by weight of a hydrotalcite compound prepared by removing crystal water therefrom under heat. The stabilized, halogen-containing resin composition is excellent in heat stability and gives molded articles free from deterioration in color tone.
    Type: Grant
    Filed: December 6, 1993
    Date of Patent: November 7, 1995
    Assignee: Kyowa Chemical Industry Co., Ltd.
    Inventors: Tsutomu Nosu, Yoshiyuki Nagae
  • Patent number: 5444111
    Abstract: The presence of ammonium halide in a PVC composition along with conventional primary heat stabilizers enhances the heat stability during the early stages of extrusion into pipe and other articles of manufacture. The ammonium halide which is formed as a by-product of the reaction of a metal halide such as zinc chloride or an organotin chloride with a mercaptoester in the presence of ammonia or an amine may be left in the product or a separate source of the ammonium halide may be used to provide the enhanced heat stability.
    Type: Grant
    Filed: June 6, 1994
    Date of Patent: August 22, 1995
    Assignee: Morton International, Inc.
    Inventors: George F. Beekman, Gary M. Conroy, Jeffrey R. Hyde, Gene K. Norris
  • Patent number: 5414035
    Abstract: The present invention provides an external lubricant composition for calendered vinyl polymer. The external lubricant provides rigid vinyl polymer compositions having improved plate out resistance, clarity, release, and stability. The external lubricant comprises an effective amount for lubricating vinyl polymer of polyethylene having a Brookfield viscosity at a temperature of 150.degree. C. of greater than about 85,000 centipoises and an acid number as determined by standardized titration of KOH of between about 5 and about 9.Sheets of the calendered vinyl polymer are used for blister packs and credit cards.
    Type: Grant
    Filed: July 1, 1994
    Date of Patent: May 9, 1995
    Assignee: AlliedSignal Inc.
    Inventors: Robert Lindner, Vincent Clarke
  • Patent number: 5340862
    Abstract: Improved stabilizer compositions are provided which impart significant long-term stabilization to halogen containing polymers such as polyvinyl chloride. The improved stabilizer compositions incorporate an alkali-metal hydrogen phosphate compound, such as anhydrous disodium hydrogen phosphate, of a predetermined surface area. The novel inorganic phosphate enables a reduction in the amount of organmetallic stabilizer, if desired, while still yielding long-term stability in the resultant polymer, or the ability to raise process temperature and reduce cycle times of molding operations.
    Type: Grant
    Filed: February 10, 1993
    Date of Patent: August 23, 1994
    Assignee: Elf Atochem North America, Inc.
    Inventors: Joseph Silbermann, William L. Smith
  • Patent number: 5304589
    Abstract: Oxidatively stabilized polyolefin polymers containing an antioxidant are made more resistant to loss of antioxidant by converting at least some of the antioxidant comprising a polymer of dicyclopentadiene and a phenolic compound into a form non extractable with cyclohexane. The conversion is preferably by reaction in the melt phase in the presence of a radical initiator. Addition of organotin esters, sulphides, oxides or thioethers reduces the color.
    Type: Grant
    Filed: January 18, 1991
    Date of Patent: April 19, 1994
    Assignee: BP Chemicals Limited
    Inventors: Neil S. Davidson, Hilda A. Leiper, Colette A. A. Di Murro, Kenneth Wilkinson
  • Patent number: 5252645
    Abstract: A halogen-containing resin composition containing 100 parts by weight of a halogen-containing resin, 0.01 to 10 parts by weight of a hydrotalcite, 0.01 to 10 parts by weight of a perchloric acid ion-containing hydrotalcite, and 0.01 to 5 parts by weight of at least one member selected from a .beta.-diketone compound, an organic acid metal salt and an organic tin compound, the resin composition being thermally stabilized against heat treatment and sun light and being improved in antistatic properties.
    Type: Grant
    Filed: December 4, 1991
    Date of Patent: October 12, 1993
    Assignee: Kyowa Chemical Industry Co., Ltd.
    Inventors: Tsutomu Nosu, Yoshiyuki Nagae
  • Patent number: 5236981
    Abstract: The present invention relates to new stabilized compositions based on halogenated polymer and more specifically on chlorinated polymer. It relates more particularly to stabilized compositions based on chlorinated polymer, which are characterized in that they contain:a) an effective quantity of at least one lead compound or of at least one organostannic compound, andb) an effective quantity of at least one essentially amorphous basic aluminum magnesium carbonate denoted by the formula (I):(MgO).sub.y.Al.sub.2 O.sub.3.(CO.sub.2).sub.x.(H.sub.2 O).sub.z (I).
    Type: Grant
    Filed: April 9, 1992
    Date of Patent: August 17, 1993
    Assignee: Rhone-Poulenc Chimie
    Inventors: Mireille Arfiche, Louis Carette, Pierre Pena Porta, Francois Pouenat
  • Patent number: 5229444
    Abstract: Antioxidant-containing polyolefin composition containing a polyolefin and an antioxidant compound having the general formula: ##STR1## wherein R, R', X and Y are the same or different and are selected from alkyl, phenyl, cyclohexyl, a mono or polyfunctional carboxylic acid ester, hydroxyalkyl, and aralkyl, which groups may be unsubstituted or substituted, linear or branched, or cyclic, and p indicates a degree of polymerization and is at least 2.
    Type: Grant
    Filed: August 15, 1991
    Date of Patent: July 20, 1993
    Assignee: Elf Atochem North America, Inc.
    Inventors: William L. Smith, Michel Foure', Dominique Ranceze, Pierre Tozzolino
  • Patent number: 5194471
    Abstract: CPVC compositions, pipe, and a method of preparing a pipe are disclosed and comprise CPVC having 63% to 70% by weight chlorine and preferably 65% to about 69% chlorine; a high rubber impact modifier comprising a graft copolymer of a rubbery polydiene and one or preferably more than one hardening monomer selected from a group consisting of a vinyl aromatic monomer, a (meth)acrylate, and a (meth)acrylonitrile monomer including mixtures. Said graft copolymer exhibits a Shore D hardness of less than about 64, and preferably between about 35 and 45; and a chlorinated polyethylene containing between 30% and 40% chlorine by weight, compression molded placques derived from the powder composition exhibit a minimum tensile strength, modulus, izod impact strength, Tg and dynamic thermal stability specified herein. A pipe extruded directly from said composition meets ASTM-D2846 and exhibits unexpected ductility down to 20.degree. F. (-6.6.degree. C.) under fixed drop dart impact testing.
    Type: Grant
    Filed: February 15, 1991
    Date of Patent: March 16, 1993
    Assignee: The B. F. Goodrich Company
    Inventor: Joachim E. Hartitz
  • Patent number: 5190580
    Abstract: A synergistic composition of biocides for the preparation of anti-fouling paint preferably containing at least one of the group of 3-iodo-2-propynyl-butyl carbamate, 3-iodo-2-propynyl-cyclohexyl carbamate, 3-iodo-2-propynyl phenyl carbamate, 3-iodo-2-propynylbenzyl carbamate, 3-iodo-2-propynyl propyl carbamate and 4-iodo-3-butynyl propyl carbamate and at least one of the group of tributyltin compounds consisting of bis(tributyltin) oxide, tributyltin fluoride, tributyltin methacrylate, tributyltin phosphate and tributyltin naphthenate. Said composition is more effective in protecting ship bottoms or underwater constructions than each component itself.
    Type: Grant
    Filed: October 25, 1991
    Date of Patent: March 2, 1993
    Assignee: Troy Chemical Corporation
    Inventor: Rainer Gruening
  • Patent number: 5166241
    Abstract: Thiol compounds are combined with an organometallic halide or metallic halide to provide thermal stability to vinyl halide polymers.
    Type: Grant
    Filed: November 22, 1989
    Date of Patent: November 24, 1992
    Inventor: Simon Kornbaum
  • Patent number: 5145896
    Abstract: A method of reducing the color of a hot melt adhesive formulation comprising a polymer of a conjugated diene which comprises adding to the formulation an amount of an alkyltin compound selected from the group consisting of mercaptides, mercaptocarboxylates, and carboxylates sufficient to reduce color formation.
    Type: Grant
    Filed: September 9, 1991
    Date of Patent: September 8, 1992
    Assignee: Shell Oil Company
    Inventor: Jeffrey G. Southwick
  • Patent number: 5116898
    Abstract: A flame retardant polypropylene based formulation which contains polypropylene and a flame retardant amount of decabromodiphenyl oxide and a polybrominated cycloalkane having an 8 to 12 carbon atom ring and at least 4 ring-attached bromine atoms.
    Type: Grant
    Filed: September 17, 1990
    Date of Patent: May 26, 1992
    Assignee: Ethyl Corporation
    Inventor: Robert A. Schleifstein
  • Patent number: 5109046
    Abstract: This invention relates to heat and light stabilizer compositions for vinyl halide resin compositions comprising organotinthioalkanol compounds that are stabilized against gelation and precipitation, to methods of preparing the stabilizer compositions, and to stabilized vinyl halide resin compositions.
    Type: Grant
    Filed: February 28, 1991
    Date of Patent: April 28, 1992
    Assignee: Atochem North America, Inc.
    Inventors: William A. Larkin, Robert C. Ringwood, Matthew T. Stershic
  • Patent number: 5100946
    Abstract: The present invention comprises a stabilized halogen containing polymer, preferably poly(vinyl halide), and more preferably poly(vinyl chloride) composition. A preferred polymer composition is a rigid halogenated polymer such as rigid poly(vinyl chloride). The composition contains at least one metal salt selected from the group consisting of at least one carboxylic acid or derivative thereof having at least two carboxyl groups, at least one carboxyl group and at least one hydroxyl group, at least one carboxyl group and at least one mercaptan, and an aromatic carboxylic acid having at least one carboxyl group. The metal salt is most preferably disodium adipate.
    Type: Grant
    Filed: December 27, 1990
    Date of Patent: March 31, 1992
    Assignee: Atochem North America, Inc.
    Inventors: Paul L. K. Hung, William L. Smith, Daniel B. Dess, Sriram Seshadri