Trivalent P (e.g., Phosphorous Acid, Phosphites, Etc.) Patents (Class 252/400.24)
  • Patent number: 10150857
    Abstract: The present invention relates to a phosphorous acid compound represented by formula (I): wherein R1 represents a C1-8 alkyl group, a C5-8 cycloalkyl group, a C6-12 alkyl cycloalkyl group, a C7-12 aralkyl group or a C6-12 aryl group; R2 represents a hydrogen atom or a C1-3 alkyl group; and R3 represents a C3-25 alkylene group, a stabilizer for organic materials containing the phosphorous acid compound, a method for stabilizing an organic material in which the phosphorous acid compound is added to the organic material, and a stabilized organic material composition containing an organic material and the phosphorous acid ester compound.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: December 11, 2018
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Shuhei Matsumoto, Natsuko Kimura
  • Patent number: 10035044
    Abstract: Golf balls having at least one layer comprising a polymer composition comprising a reaction mixture of a base polymer and at least one regenerating-type multi-functional antioxidant. A regenerating-type multi-functional antioxidant has at least two differing moieties selected for example from the group consisting of phenols, phosphites, amines or combinations thereof, and is macromolecular, having a molecular weight of at least 2,000 g/mol. and up to 2,000,000. The at least one layer may comprise at least one regenerating-type multi-functional antioxidant in an amount of from 0.10 to about 2.5 parts by weight per 100 parts by weight of the base polymer, or of less than 0.50 parts by weight per 100 parts by weight of the base polymer, or of less than 0.095 parts by weight per 100 parts by weight of the base polymer. The base polymer can comprise ionomer resin composition(s), polyurethane composition(s) and/or rubber composition(s).
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: July 31, 2018
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Brian Comeau, Michael Michalewich
  • Patent number: 9340665
    Abstract: Polyethylene is often stabilized with the combination of a primary antioxidant (such as a hindered phenol, a hydroxylamine or a lactone) and a secondary antioxidant (such as a phosphonite, a monophosphite, or a diphosphite). The diphosphite additives are not completely compatible with “linear” polyethylene. This results in “blooming” of the diphosphite to the surface of the finished polyethylene part or polyethylene film. The use of a preblend of ethylene vinyl alcohol (EVOH) and diphosphite mitigates this problem.
    Type: Grant
    Filed: April 2, 2013
    Date of Patent: May 17, 2016
    Assignee: NOVA Chemicals (International) S.A.
    Inventors: Tony Tikuisis, Kam Wah Ho, Nitin Borse
  • Patent number: 9045618
    Abstract: The present invention relates to two processes for providing stable liquid blends of a) pentaerythritol tetrakis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate, b) octadecyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate and c) tris-(2,4-di-tert-butylphenyl)phosphite. The first process comprises preparing a solid mixture comprising about 2 parts to about 3 parts by weight a), about 2 parts to about 3 parts by weight b) and about 2 parts to about 12 parts by weight c), heating the mixture to 185° C. or higher for a sufficient time to obtain a clear liquid blend of a), b) and c), cooling the liquid blend to a temperature of from 90° C. to 140° C. and maintaining the liquid blend at a temperature of from 90° C. to 140° C. The second process comprises preparing a solid mixture comprising about 2 parts to about 3 parts by weight a) and about 2 parts to about 3 parts by weight b), heating the mixture to 90° C.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: June 2, 2015
    Assignee: BASF SE
    Inventors: Jiong Yu, Roswell Easton King
  • Publication number: 20150087755
    Abstract: The present invention relates to a composition, which comprises a) an organic material susceptible to oxidative, thermal or light-induced degradation, which is a polymer, an oligohydroxy compound, a wax, a fat or a mineral oil, with the proviso that the polymer is not a polypeptide, agar-agar or a component of agar-agar and the oligohydroxy compound is not glucose or a component of agar-agar; and b) a compound of formula (I) n is 1, 2, 3 or 4; when n is 1, R5 is H, C1-C30-alkyl, C3-C10-cycloalkyl, C6-C10-aryl, which is unsubstituted or substituted by C1-C8-alkyl, C1-C8-alkoxy, halogen or one phenyl, C7-C13-aralkyl, C2-C22-alkenyl, C3-C12-alkinyl, OH, C1-C30-alkyloxy, C3-C10-cycloalkyloxy, C6-C12-aryloxy, C7-C13-aralkyloxy, hydroxy-C1-C8-alkyl, carboxy-C1-C12-alkyl, C1-C12-alkoxycarbonyl-C1-C12-alkyl, C2-C30-alkyl, which is interrupted by one or more oxygen atoms, C2-C16-alkyl, which is interrupted by one sulfur atom, or NR?1R?2; when n is 2, R5 is C1-C12-alkane-diyl, C6-C14-arylene, C4-C8-cycloalkane-bis-(C1-
    Type: Application
    Filed: March 19, 2013
    Publication date: March 26, 2015
    Applicant: BASF SE
    Inventors: Werner Hoelzl, Bruno Rotzinger
  • Publication number: 20150021523
    Abstract: Processes for alkylating hydroxyaryl compounds by reacting a hydroxyaryl with at least one olefin of a complex hydrocarbon stream. The complex hydrocarbon stream preferably comprises a fraction of a cracked hydrocarbon feed stream or the reaction products of a dehydrogenation of a paraffinic feedstock. The olefin of the complex hydrocarbon stream is preferably a branched olefin, e.g., isobutylene or isoamylene. The alkylated compositions are suitable for forming liquid phosphite compositions.
    Type: Application
    Filed: May 27, 2014
    Publication date: January 22, 2015
    Applicant: Addivant USA LLC
    Inventors: Jonathan S. Hill, Maurice Power, Paul Stott, Peter Smith
  • Patent number: 8921466
    Abstract: A process of modifying propylene polymers via melt grafting of polyfunctional monomer (PFMs) involving pre-initiative step thereby facilitating perfect absorption of PFMs on polymer matrix and initiate their grafting prior to reactive extrusion without using free radical initiators so that branching can be introduced in propylene polymer matrix. The modified propylene polymers showed enhanced shear sensitivity, increase in molecular weight, broadening of molecular weight distribution and strain hardening.
    Type: Grant
    Filed: January 14, 2011
    Date of Patent: December 30, 2014
    Assignee: Reliance Industries Limited
    Inventors: Uma Sankar Satpathy, Shashikant, Ajit Behari Mathur
  • Patent number: 8916065
    Abstract: Solid phosphite compositions comprising tris(4-t-alkylphenyl)phosphites and selected hydroxyalkyl amines exhibit surprising performance compared with other phosphite stabilizers in the stabilization of polymers, such as polyolefins and the like, particularly in the prevention of color formation during high temperature processing or when exposed to certain gasses during storage, e.g., “gas fading”.
    Type: Grant
    Filed: October 14, 2013
    Date of Patent: December 23, 2014
    Assignee: Addivant Switzerland GmbH
    Inventors: Hayder Zahalka, Maurice Power, Jonathan S. Hill, Peter Smith
  • Patent number: 8852468
    Abstract: Modified lignin having covalently attached phosphorous containing groups and methods for preparing such compounds are described herein. The modified lignin described herein provides a renewable source of flame retardant material.
    Type: Grant
    Filed: April 24, 2014
    Date of Patent: October 7, 2014
    Assignee: Empire Technology Development LLC
    Inventor: Glen Leon Brizius
  • Publication number: 20140225038
    Abstract: The present invention relates to two processes for providing stable liquid blends of a) pentaerythritol tetrakis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate, b) octadecyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate and c) tris-(2,4-di-tert-butylphenyl)phosphite. The first process comprises preparing a solid mixture comprising about 2 parts to about 3 parts by weight a), about 2 parts to about 3 parts by weight b) and about 2 parts to about 12 parts by weight c), heating the mixture to 185° C. or higher for a sufficient time to obtain a clear liquid blend of a), b) and c), cooling the liquid blend to a temperature of from 90° C. to 140° C. and maintaining the liquid blend at a temperature of from 90° C. to 140° C. The second process comprises preparing a solid mixture comprising about 2 parts to about 3 parts by weight a) and about 2 parts to about 3 parts by weight b), heating the mixture to 90° C.
    Type: Application
    Filed: September 27, 2012
    Publication date: August 14, 2014
    Applicant: BASF SE
    Inventors: Jiong Yu, Roswell Easton King
  • Patent number: 8747709
    Abstract: Modified lignin having covalently attached phosphorous containing groups and methods for preparing such compounds are described herein. The modified lignin described herein provides a renewable source of flame retardant material.
    Type: Grant
    Filed: May 3, 2012
    Date of Patent: June 10, 2014
    Assignee: Empire Technology Development LLC
    Inventor: Glen Leon Brizius
  • Patent number: 8735628
    Abstract: Processes for alkylating hydroxyaryl compounds by reacting a hydroxyaryl with at least one olefin of a complex hydrocarbon stream. The complex hydrocarbon stream preferably comprises a fraction of a cracked hydrocarbon feed stream or the reaction products of a dehydrogenation of a paraffinic feedstock. The olefin of the complex hydrocarbon stream is preferably a branched olefin, e.g., isobutylene or isoamylene. The alkylated compositions are suitable for forming liquid phosphite compositions.
    Type: Grant
    Filed: July 9, 2010
    Date of Patent: May 27, 2014
    Assignee: Addivant USA LLC
    Inventors: Jonathan S. Hill, Maurice Power, Paul Stott, Peter Smith
  • Publication number: 20140045981
    Abstract: Solid phosphite compositions comprising tris(4-t-alkylphenyl)phosphites and selected hydroxyalkyl amines exhibit surprising performance compared with other phosphite stabilizers in the stabilization of polymers, such as polyolefins and the like, particularly in the prevention of color formation during high temperature processing or when exposed to certain gasses during storage, e.g., “gas fading”.
    Type: Application
    Filed: October 14, 2013
    Publication date: February 13, 2014
    Inventors: Hayder Zahalka, Maurice Power, Jonathan S. Hill
  • Patent number: 8628699
    Abstract: The present invention relates to a stabilizer combination for stabilizing IR absorbers, comprising a) at least one stabilizer based on phosphine, b) at least one stabilizer based on phosphite, and c) at least one phenolic antioxidant stabilizer.
    Type: Grant
    Filed: May 10, 2011
    Date of Patent: January 14, 2014
    Assignee: Bayer MaterialScience AG
    Inventors: Alexander Meyer, Michael Wagner, Marc Schinner
  • Patent number: 8431202
    Abstract: A polyester composition containing: a) aluminum atoms; and b) alkaline earth atoms or alkali metal atoms or alkali compound residues such as lithium atoms; and c) particles comprising titanium, zirconium, vanadium, niobium, hafnium, tantalum, chromium, tungsten, molybdenum, iron, or nickel atoms or combinations thereof, where the particles improve the reheat rate of the polyester composition. The polyester polymer compositions may also contain phosphorus catalyst deactivators/stabilizers. The polyester compositions and the articles made from the compositions such as bottle preforms and stretch blow molded bottles have improved reheat rate while maintaining low haze, high L*, a b* below 3, and have low levels of acetaldehyde. In the process for making the polyester polymer, the polymer melt is polycondensed in the presence of a) and b), with the particles c) added in a melt phase process or added to the polymer in an injection molding machine or extruder.
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: April 30, 2013
    Assignee: Grupo Petrotemex, S.A. de C.V.
    Inventors: Donna Rice Quillen, Rodney Scott Armentrout, Mary Therese Jernigan, Steven Lee Stafford, Zhiyong Xia
  • Publication number: 20130059958
    Abstract: A process of modifying propylene polymers via melt grafting of polyfunctional monomer (PFMs) involving pre-initiative step thereby facilitating perfect absorption of PFMs on polymer matrix and initiate their grafting prior to reactive extrusion without using free radical initiators so that branching can be introduced in propylene polymer matrix. The modified propylene polymers showed enhanced shear sensitivity, increase in molecular weight, broadening of molecular weight distribution and strain hardening.
    Type: Application
    Filed: January 14, 2011
    Publication date: March 7, 2013
    Applicant: RELIANCE INDUSTRIES LIMITED
    Inventors: Uma Sankar Satpathy, Shashikant, Ajit Behari Mathur
  • Patent number: 8303851
    Abstract: Mixtures of additives in granular form comprising: one or more stabilizers for organic polymers; one or more organic or inorganic pigments; and/or one or more dyes; obtained by extrusion at a temperature capable of enabling the partial or total melting of the lowest-melting component. The above mixtures can be used in the stabilization and dyeing of organic polymers.
    Type: Grant
    Filed: January 18, 2008
    Date of Patent: November 6, 2012
    Assignee: Great Lakes Chemical (Europe) GmbH
    Inventors: Carlo Neri, Corrado Callierotti
  • Patent number: 8178005
    Abstract: A composition comprising at least two different alkylaryl phosphites, wherein some alkyl groups have a different number of carbon atoms than other alkyl groups and wherein the composition is a liquid at ambient conditions.
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: May 15, 2012
    Assignee: Chemtura Corporation
    Inventors: Michael E. Gelbin, Maurice Power, Jonathan Hill
  • Patent number: 8067490
    Abstract: A composition and method for increasing the hydrolytic stability of a stabilizer composition comprising a first phosphite, a second phosphite, an optional phosphonite and an acid scavenger.
    Type: Grant
    Filed: September 24, 2008
    Date of Patent: November 29, 2011
    Assignee: Chemtura Corporation
    Inventors: Hayder Zahalka, Karl Diefenbach
  • Publication number: 20110272647
    Abstract: The present invention relates to a stabilizer combination for stabilizing IR absorbers, comprising a) at least one stabilizer based on phosphine, b) at least one stabilizer based on phosphite, and c) at least one phenolic antioxidant stabilizer.
    Type: Application
    Filed: May 10, 2011
    Publication date: November 10, 2011
    Applicant: Bayer MaterialScience AG
    Inventors: Alexander Meyer, Michael Wagner, Marc Schinner
  • Patent number: 8021609
    Abstract: A highly stabilized hydrogen peroxide useful for chemical sterilization of packaging materials in high-speed aseptic packaging plants.
    Type: Grant
    Filed: March 19, 2004
    Date of Patent: September 20, 2011
    Assignee: Solvay Chemicals GmbH
    Inventors: Werner Doetsch, Otmar Woost
  • Patent number: 8021585
    Abstract: A method is described for preparing liquid concentrates of additives for incorporation in polymers, particularly polymers prepared in solution or slurry phase polymerization media. Additive concentrates according to the invention are characterized by a finer dispersion than would result from the direct addition of particulate or granular additives to the same liquid solvent.
    Type: Grant
    Filed: April 20, 2007
    Date of Patent: September 20, 2011
    Assignee: Ingenia Polymers Corp.
    Inventors: Zach Charlton, Larry Spino, George Kalantzakis, John Lefas, Salvatore D'Uva
  • Patent number: 7985456
    Abstract: Polymer blends are disclosed that comprise one or more polybutadiene homopolymers or copolymers having at least one functionality capable of entering into condensation reactions; one or more polyethylene terephthalate homopolymers or copolymers obtained using a catalyst system comprising aluminum atoms and one or more alkaline earth metal atoms, alkali metal atoms, or alkali compound residues, optionally obtained by a melt-phase polymerization process; and one or more transition metal atoms. The blends are useful for packaging, and exhibit improved oxygen-scavenging activity compared with blends made using many conventional polyethylene terephthalate polymers prepared with conventional catalyst systems.
    Type: Grant
    Filed: April 29, 2009
    Date of Patent: July 26, 2011
    Assignee: Grupo Petrotemex, S.A. de C.V.
    Inventors: Mark Edward Stewart, Rodney Scott Armentrout
  • Publication number: 20110166268
    Abstract: The present invention relates to high purity monoalkyltin compounds, more specifically to alkyltin compound compositions containing monoalkyltin as major compound, and minor quantities of di- and/or trialkyltin compounds. The present invention also relates to the preparation processes of such high purity monoalkyltin compounds, as well as to the uses of said monoalkyltin compounds as chlorine-containing polymer-stabilisers, glass coating chemicals and catalysts, as well as articles comprising at least one polymer matrix and a high purity monoalkyltin compound.
    Type: Application
    Filed: May 14, 2009
    Publication date: July 7, 2011
    Applicant: ARKEMA FRANCE
    Inventors: Berth Jan Deelman, Jeroen J.M. de Pater, Evert J. Saman, Isabelle Tartarin
  • Patent number: 7955525
    Abstract: Disclosed is an oil composition wherein the oil contains measurable amounts of peroxide resulting from peroxidation, and also includes an effective amount of a peroxide-reducing phosphorous compound, preferably an alkyl/aryl substituted phosphite compound or phosphinic acid (H3PO2) and its derivatives.
    Type: Grant
    Filed: August 19, 2010
    Date of Patent: June 7, 2011
    Assignee: Galata Chemicals, LLC
    Inventors: Michael G. Denoux, Ritchie Tregre, Garrett Mineo
  • Patent number: 7883642
    Abstract: An antioxidant composition containing an antioxidant represented by the following formula (I) and a metal salt of fatty acid of a carbon number of 4 to 18, wherein a weight ratio of the antioxidant (I) and the metal salt of fatty acid is in a range of (100:0.1) to (100:200).
    Type: Grant
    Filed: November 16, 2006
    Date of Patent: February 8, 2011
    Assignee: Sumitomo Chemical Company, Limited
    Inventor: Kenji Kimura
  • Publication number: 20110028619
    Abstract: Hydrolytically stable phosphites as secondary antioxidants for polymer resins comprising a phosphite and an amine compound. The phosphite may be a liquid phosphite composition. The amine compound may have the structure of formula I: wherein x is 1, 2 or 3; R1 is selected from the group consisting of hydrogen, and straight or branched C1-C6 alkyl, and R2 is selected from the group consisting of straight or branched C1-C30 alkyl.
    Type: Application
    Filed: July 28, 2010
    Publication date: February 3, 2011
    Inventors: Jonathan Hill, Maurice Power
  • Publication number: 20110028617
    Abstract: The invention is directed to various alkylaryl phosphite compositions that ideally are suitable for use as secondary antioxidants in polymers. In one aspect, the phosphite composition comprises a tris(dialkylaryl)phosphite in an amount from 20 to 93 weight percent; and at least one of: a bis(dialkylaryl)monoalkylaryl phosphite; a bis(monoalkylaryl)dialkylaryl phosphite; and a tris(monoalkylaryl)phosphite. The inventive phosphite composition is a solid at ambient conditions. The invention also relates to alkylate compositions and processes for forming such alkylate compositions and such phosphite compositions.
    Type: Application
    Filed: July 28, 2010
    Publication date: February 3, 2011
    Inventors: Jonathan S. Hill, Maurice Power, Peter Smith
  • Publication number: 20100256266
    Abstract: Stabilizer compositions comprise phosphate of the formula I or II, a phosphite of the formula III, and a phenol of the formula IV as these formulas are defined herein. The stabilizer compositions are useful for stabilizing polymers. Methods for making stabilized polymer compositions involve intermixing the stabilizer compositions and the polymers, e.g., by extruding, pelletizing, and/or molding.
    Type: Application
    Filed: June 15, 2010
    Publication date: October 7, 2010
    Applicant: CYTEC TECHNOLOGY CORP.
    Inventors: John Mathew ZENNER, Brent Sanders
  • Patent number: 7683112
    Abstract: There is provided a phosphite composition comprising 100 parts by weight of a phosphite represented by the formula (1) and 0.5 to 8 parts by weight of an aliphatic hydrocarbon lubricant having a softening point or a melting point of not higher than 115° C., wherein the content of the phosphite (1) in said composition is 30 to 99.5% by weight.
    Type: Grant
    Filed: November 9, 2007
    Date of Patent: March 23, 2010
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Kenji Kimura, Kunihito Miyake, Hideo Narahara
  • Publication number: 20100025636
    Abstract: A composition comprising at least two different alkylaryl phosphites, wherein some alkyl groups have a different number of carbon atoms than other alkyl groups and wherein the composition is a liquid at ambient conditions.
    Type: Application
    Filed: July 31, 2009
    Publication date: February 4, 2010
    Applicant: Chemtura Corporation
    Inventors: Michael E. Gelbin, Maurice Power, Jonathan Hill
  • Patent number: 7632424
    Abstract: A method for inhibiting the discoloration of methylenebisaniline compounds by adding a phosphine of the formula: (H)p—P—(R3)q (wherein R3 is an optionally substituted aryl group or an optionally substituted alkyl group; p is 0, 1 or 2 and q is 1, 2 or 3) to a compound of the formula: (wherein R1 and R2 are each independently a halogen atom or a C1-C6 alkyl group; a and b are each independently an integer of 0 to 4; m and n are each independently an integer of 1 to 5).
    Type: Grant
    Filed: December 20, 2004
    Date of Patent: December 15, 2009
    Assignee: Ihara Chemical Industry Co., Ltd.
    Inventors: Mato Nagasawa, Naoya Atsumi, Hirofumi Ichikawa
  • Publication number: 20090149581
    Abstract: Stabilizer compositions comprise phosphate of the formula (I) or (II), a phosphite of the formula (III), and a phenol of the formula (IV) as these formulas are defined herein. The stabilizer compositions are useful for stabilizing polymers. Methods for making stabilized polymer compositions involve intermixing the stabilizer compositions and the polymers, e.g., by extruding, pelletizing, and/or molding.
    Type: Application
    Filed: May 10, 2007
    Publication date: June 11, 2009
    Applicant: Cytec Technology Corp.
    Inventors: John Mathew Zenner, Brent Sanders
  • Publication number: 20080306192
    Abstract: An object of the present invention is to provide a low-dusting additive composition which can improve thermal coloration resistance of a thermoplastic resin. A granular additive composition comprising 5 to 70% by weight of fatty calcium and 5 to 50% by weight of a sulfur-based compound represented by the formula (1), wherein an infrared absorption spectrum of the composition has a maximum absorption peak A in which absorbance in 1540 cm?1 to 1543 cm?1 is a maximum value, and a maximum absorption peak B in which absorbance in 1575 cm?1 to 1583 cm?1 is a maximum value, and the absorbances of the peak A and the peak B are a maximum value and a next maximum value in 1540 cm?1 to 1583 cm?1. (R1—Y—S—C2H4CO2)m-Z??(1) [In the formula (1), R1 represents an alkyl group, Y represents a single bond, or a —C2H4CO2— group, m represents an integer of 1 to 4, and Z represents an alcohol residue].
    Type: Application
    Filed: April 25, 2008
    Publication date: December 11, 2008
    Inventors: Kenji Kimura, Hiroshi Kajikuri
  • Publication number: 20080250977
    Abstract: The present invention relates to an antiskinning composition containing an organic oxygen scavenger and at least one drying accelerator.
    Type: Application
    Filed: April 16, 2007
    Publication date: October 16, 2008
    Inventors: Andrew Mason, John Birkett, Paul Thomas
  • Patent number: 7425290
    Abstract: A compacted particulate polymer additive composition in a dry granular form formed from a substantially uniform mixture of the following components: (a) at least one particulate sterically-hindered phenolic compound; and (b) one or more particulate polymer additives other than a sterically-hindered phenolic compound; wherein the particles of said composition are held together in compacted dry granular form exclusively or substantially exclusively by contact with dried surfaces of in situ desolvated particles from particles of one or more at least partially solvated components of (a), and optionally by contact with dried surfaces of in situ desolvated particles from particles of one or more at least partially solvated components of (b). Compositions of this type except that there is no component (b) are also described.
    Type: Grant
    Filed: August 4, 2004
    Date of Patent: September 16, 2008
    Assignee: Albemarle Corporation
    Inventor: John Semen
  • Patent number: 7368493
    Abstract: A carbodiimide composition having an improved heat resistance which meets conventional requirements for a carbodiimide compound to be compounded in an ester-group-containing resin or a biodegradable plastic, and exhibiting no coloring problems due to yellowing, and having a superior stabilizing effect agains hydrolysis. The carbodiimide composition comprises a carbodiimide compound (A) and an antioxidant (B), having a 5% weight loss temperature not lower than 250° C. as determined by a thermogravimetric (TG) method, wherein an antioxidant (B) is dispersed and present in the composition by admixing during synthesis of a carbodiimide compound (A), a stabilizer against hydrolysis mainly comprising the carbodiimide composition and a thermoplastic resin composition containing the same.
    Type: Grant
    Filed: July 28, 2004
    Date of Patent: May 6, 2008
    Assignee: Nisshinbo Industries, Inc.
    Inventors: Ikuo Takahashi, Hirotaka Iida, Norimasa Nakamura
  • Patent number: 7323119
    Abstract: The present invention relates to the color stabilization of hydroquinone hydroxyethyl ethers by phosphite compounds containing the bis-cyclic structure of spiro phosphites, both rings being attached to the same tertiary carbon atom in the phosphite molecule.
    Type: Grant
    Filed: October 26, 2005
    Date of Patent: January 29, 2008
    Assignee: Arch Chemicals, Inc.
    Inventors: Jayne Mallwitz, Robert C. Hire, Kiran B. Chandalia
  • Patent number: 7320764
    Abstract: The invention relates to liquid polymer additive compositions comprising blends of phosphite esters selected from the group consisting of aryl phosphites, alkyl phosphites, aryl/alkyl phosphites, bisphenol-A phosphites, dialkylene glycol phosphites and polydialkylene glycol phosphites, pentaerythritol phosphites, p-cumyl phenol phosphites with from 50 to 800 ppm inclusive of zinc per 100 parts resin. The stabilizer is used as either a complete or a partial replacement of toxic-metal containing antioxidant stabilizer additives.
    Type: Grant
    Filed: May 11, 2004
    Date of Patent: January 22, 2008
    Assignee: Dover Chemical Corporation
    Inventors: Donald R. Stevenson, Thomas C. Jennings, Mark E. Harr, Michael R. Jakupca
  • Patent number: 7297746
    Abstract: A hardener composition for use as a component of a two component polyurethane coating composition, comprising a polyisocyanate, a catalyst for promoting reaction of the polyisocyanate with a reactive hydrogen compound, and one or more antioxidants selected from: a first antioxidant comprising one or more of sterically hindered phenol antioxidants and secondary aryl amine antioxidants, and a second antioxidant comprising one or more organophosphite antioxidant, exhibits improved color stability.
    Type: Grant
    Filed: July 14, 2004
    Date of Patent: November 20, 2007
    Assignee: Rhodia Inc.
    Inventors: Richard Rosen, Jean-Marie Bernard, Shiming Wo, Corinne Simone Duffy
  • Patent number: 7255813
    Abstract: The invention relates to a compound containing at least one health promoting isolated antioxidant A having a redox potential of less than 180 mV and at least one stabilising antioxidant B which has a standard redox potential which is less than the standard redox potential of the antioxidant A. The use of the inventive compound and method for the production thereof are also disclosed.
    Type: Grant
    Filed: November 19, 2003
    Date of Patent: August 14, 2007
    Assignee: Nutropia Ernahrungsmedizinische Forschungs GmbH
    Inventors: Behzad Sadeghi, Peter Kössler, Norbert Fuchs
  • Patent number: 7199181
    Abstract: A stabilizer composition is described and comprises a 2-cyano-3,3-diarylacrylate, a sterically hindered monomeric amine, a sterically hindered phenol and, where appropriate, a chromane derivative and/or an organic phosphite and/or phosphonite. The stabilizer composition is particularly suitable for stabilizing thermoplastic polyurethane with respect to light, oxygen, and heat.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: April 3, 2007
    Assignee: BASF Aktiengesellschaft
    Inventors: Thomas Heidenfelder, Manfred Appel
  • Patent number: 7196135
    Abstract: A stabilizer composition is described and comprises a 3-arylacrylate, a polymeric compound with molecular weight at least 2000, bearing, on a polymeric framework, side groups having amine functions, where all of the substituents in the ?-position to the amine nitrogen atom are other than hydrogen, and comprises a sterically hindered phenol. The stabilizer composition is particularly suitable for stabilizing thermoplastic polyurethane with respect to light, oxygen, and heat.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: March 27, 2007
    Assignee: BASF Aktiengesellschaft
    Inventors: Thomas Heidenfelder, Manfred Appel
  • Patent number: 7176252
    Abstract: A solid phosphite composite, having at least a portion in amorphous form, which includes at least one, preferably two or more phosphite antioxidants or alternatively at least one phosphite and at least one other polymer additive. The phosphites, at least one of which can initially be a liquid, are generally uniformly distributed since they are melt blended. A desired class of phosphites are the bis(arylalkylphenyl)pentaerythritol diphosphites, at least a portion of which is in amorphous form.
    Type: Grant
    Filed: February 13, 2004
    Date of Patent: February 13, 2007
    Assignee: Dover Chemical Corporation
    Inventors: Donald R. Stevenson, Satyan Kodali, Carroll W. Larke
  • Patent number: 7105590
    Abstract: The instant invention relates to stabilizer compositions for thermoplastic polymers comprising a) at least one organophosphine, b) at least one 2-phenylbenzofuranone, and c) at least one sterically hindered piperidine based stabilizer (HAS), wherein the weight ratio of component a) to component b) to component c) is from 1:0.05:0.5 to 1:3:5. The instant compositions need an overall lower concentration as compared with the conventional phenol-containing formulations. In polyolefin articles, particularly in polyolefin-fibers, discoloration during processing and service life by both the formation of quinoid products and by action of NOx gases (gasfading) is avoided.
    Type: Grant
    Filed: August 5, 2002
    Date of Patent: September 12, 2006
    Assignee: Clariant Finance (BVI) Limited
    Inventors: Christoph Kröhnke, Peter Staniek
  • Patent number: 7083743
    Abstract: The invention relates to a synergistic mixture comprising a) at least one compound from the group which consists of the phosphanes of the formula (I), (di/oligo)phosphanes of the formulae (II) and (III) and cyclophosphanes of the formula (IV) and b) at least one 6-hydroxychromane derivative of the general formula (V) and also to a process which stabilizes polymers with respect to thermooxidative degradation by addition and incorporation of this synergistic mixture.
    Type: Grant
    Filed: December 18, 2000
    Date of Patent: August 1, 2006
    Assignee: Clariant Finance (BVI) Limited
    Inventors: Christoph Kröhnke, Peter Staniek
  • Patent number: 7077981
    Abstract: The invention relates to stabilizer systems, containing at least: a) a perchlorate salt; b) at least one or more compounds from the group consisting of carbamides, indole derivatives and enamines of formula (I), wherein n=1 or 2 and X=O or NR1; n=3–6 and X=O; R1=H, C1–C4-alkyl, C2–C6-alkenyl, C6–C10-aryl, C7–C18-alkaryl or C7–C18-aralkyl; R2 (if n=1)=C1–C22-alkyl, C2–C22-alkenyl or aryl, preferably phenyl, optionally substituted with up to 3 hydroxy, C1–C4-alkoxy or C1–C9-alkyl; or R2 (if n=2–6)=linear or branched C1-22-alkylene, optionally interrupted by one or more O or S atoms, wherein R2 (if n=3) can also be a C2–C3-alkyl trisubstituted isocyanurate; if X=NH R2 can also be H. Said stabilizer systems are suitable for stabilizing halogen-containing polymers, more particularly PVC.
    Type: Grant
    Filed: December 12, 2001
    Date of Patent: July 18, 2006
    Assignee: Crompton Vinyl Additives GmbH
    Inventors: Wolfgang Wehner, Hans-Helmut Friedrich
  • Patent number: 6995200
    Abstract: The present invention relates to a stabilizer composition comprising a) at least one sterically hindered phenol, b) at least one phosphorus-containing secondary antioxidant, and c) at least one Leucine compound, wherein the weight ratio of component (a) to component (b) to component (c) is from 1:5:3 to 1:0,5:0,1 for the stabilization of polyolefine-based thermoplastic polymers against degradation, crosslinking and/or discoloration due to the exposure to heat and/or light, especially in the presence of oxygen.
    Type: Grant
    Filed: February 20, 2002
    Date of Patent: February 7, 2006
    Assignee: Clariant Finance (BVI) Limited
    Inventor: Christoph Kröhnke
  • Patent number: 6994804
    Abstract: The present invention relates to the color stabilization of hydroquinone hydroxyethyl ethers by phosphite compounds containing the bis-cyclic structure of spiro phosphites, both rings being attached to the same tertiary carbon atom in the phosphite molecule.
    Type: Grant
    Filed: June 30, 2004
    Date of Patent: February 7, 2006
    Assignee: Arch Chemicals, Inc.
    Inventors: Jayne Mallwitz, Robert C. Hire, Kiran B. Chandalia
  • Patent number: 6964746
    Abstract: The invention relates to mixtures of phosphonite (component A) and/or an ester and/or salt of a long-chain fatty acid (component B), and/or a carboxylic ester, and/or carboxylic amide (component C), and also to their use in polyamides or in polyesters.
    Type: Grant
    Filed: June 12, 2003
    Date of Patent: November 15, 2005
    Assignee: Clariant GmbH
    Inventors: Elke Schlosser, Wolfgang Wanzke, Christian Lechner