Patents Examined by Kriellion Morgan
  • Organic polymer stabilization
    Patent number: 4952619
    Abstract: Reactive stabilizing compounds, able to stabilize organic polymers, contain in their molecule a sterically hindered amino group and a hydrolyzable silyl function.In stabilizing organic polymers, said reactive stabilizing compounds can be hydrolyzed at the silyl function with the formation of silanol groups, which are made to interact in order to form complex resinous stabilizing structures. These latter are added in stabilizing quantities to the polymer to the stabilized.According to one particular embodiment, the hydrolysis at the silyl function and the formation of the resinous structure take place spontaneously within the polymer to be stabilized.According to a further embodiment, the reactive stabilizing compound is added to the polymer after being stably supported on a solid support by reaction with an inorganic solid having surface hydroxyl groups.
    Type: Grant
    Filed: May 14, 1987
    Date of Patent: August 28, 1990
    Assignee: Enichem Synthesis S.p.A.
    Inventors: Alberto Greco, Carlo Busetto, Luigi Cassar, Carlo Neri
  • Silylated U.V. stabilizers containing hindered tertiary amines
    Patent number: 4946880
    Abstract: Reactive stabilizer compounds, to be used in the stabilization of organic polymers, contain a sterically hindered, N-substituted piperidinic, morpholinic or pyrrolidinic group, and at least a hydrolysable silicic function.Such compounds give rise, by hydrolysis of the silicic function, to complex resinous structures endowed with stabilizing properties.The reactive stabilizer compounds can spontaneously hydrolyse inside the polymer, or they can be stably supported on a solid support, or they can be chemically linked to the polymeric chain to be stabilized.
    Type: Grant
    Filed: October 5, 1987
    Date of Patent: August 7, 1990
    Assignee: Enichem Synthesis S.p.A.
    Inventors: Silvestro Costanzi, Damiano Gussoni, Omero Zavattini, deceased, by Clara Pungiluppi, heir, by Renato Zavattini, heir, Luciano Pallini
  • Tire sidewall
    Patent number: 4946881
    Abstract: A new class of antiozonant compounds, namely tris(N-alkyl-p-phenylenediamino)-1,3,5-triazine compounds, are incorporated into thermosetting compositions having at least one highly unsaturated rubbery polymer and at least one other elastomer having lesser unsaturation, such as EPDM. Thermosetting compositions are most useful as tire sidewall compositions which may be preferably cured with blends of organic peroxide and sulfur donor accelerators.
    Type: Grant
    Filed: March 4, 1988
    Date of Patent: August 7, 1990
    Assignee: Uniroyal Chemical Company, Inc.
    Inventors: Robert J. Cornell, Edward L. Wheeler, Russell A. Mazzeo, Sung W. Hong
  • Perester compounds
    Patent number: 4946960
    Abstract: Perester compounds suitable for causing the polymerisation of addition polymerisable compounds on exposure to radiation have the general formulae ##STR1##
    Type: Grant
    Filed: October 9, 1987
    Date of Patent: August 7, 1990
    Assignee: Vickers PLC
    Inventors: John R. Wade, Rodney M. Potts, Michael J. Pratt
  • Crosslinkable flame retardant composition of polyolefin and polyphenylene ether
    Patent number: 4945018
    Abstract: Curable flame retardant mixtures of a polyolefin (non-rubbery), a polyphenylene ether resin, an aromatic phosphate, a brominated compound or polymer, and a crosslinking agent are described. Electrically conductive articles having insulation material made of the composition and methods for preparing such articles are also disclosed.
    Type: Grant
    Filed: February 27, 1989
    Date of Patent: July 31, 1990
    Assignee: General Electric Company
    Inventors: Visvaldis Abolins, Joseph E. Betts, Fred F. Holub, Gim F. Lee, Jr.
  • Polyarylene sulfide resin composition
    Patent number: 4933386
    Abstract: A polyarylene sulfide resin composition, being improved in thermal resistance and mouldability, comprises (A) 100 parts by weight of a polyarylene sulfide resin, (B) 0.
    Type: Grant
    Filed: February 17, 1989
    Date of Patent: June 12, 1990
    Assignee: Polyplastics Co., Ltd.
    Inventors: Toshikatsu Nitoh, Yoshihito Tsukamoto
  • Cyclic phosphites and stabilized polymeric compositions
    Patent number: 4929654
    Abstract: Disclosed are novel cyclic phosphite compounds having the formula ##STR1## wherein each R.sup.1 is independently selected from hydrogen, alkyl, aralkyl, aryl, carboxy, alkoxycarbonyl or halogen;each R.sup.2 is independently selected from hydrogen, alkyl, aralkyl, alkoxy, aryl, carboxy, alkoxycarbonyl or halogen;R.sup.3 is (a) hydrogen, alkyl, cyclohexyl or aryl when n is 1; (b) alkylene, cyclohexylene, cyclohexylenedialkylene, arylene or a divalent group having the formula ##STR2## wherein R.sup.1 and R.sup.2 are defined above and A.sup.2 is 1,3- or 1,4-phenylene when n is 2; (c) alkanetriyl when n is 3; or alkanetetrayl when n is 4;n is 1, 2, 3 or 4; andA.sup.1 is 1,3-phenylene.Also disclosed are synthetic polymeric materials stabilized with one of the above compounds and phosphite chloride compounds from which the above compounds are prepared.
    Type: Grant
    Filed: October 4, 1988
    Date of Patent: May 29, 1990
    Assignee: Eastman Kodak Company
    Inventors: Richard H. S. Wang, Garry L. Myers
  • Polyolefins stabilized against damage caused by light
    Patent number: 4929652
    Abstract: The invention relates to polyolefines stabilized against damage caused by light and containing(A) at least one polyalkylpiperidine light stabilizer,(B) an organic salt of zinc or magnesium and(C) either(C.sub.1) a UV absorber or(C.sub.2) a pigment or(C.sub.3) a UV absorber and a pigment.
    Type: Grant
    Filed: April 27, 1988
    Date of Patent: May 29, 1990
    Assignee: Ciba-Geigy Corporation
    Inventor: Francois Gugumus
  • Stabilized pigmented polypropylene fiber resistant to gas fade
    Patent number: 4929653
    Abstract: Excellent stabilization of pigmented polypropylene (PP) fiber against gas fade upon exposure to atmospheric pollutants is obtained with a hindered amine containing a polysubstituted piperazin-2-one (PSP) moiety, for example, a C.sub.2 -C.sub.12 alkylene connecting two PSP moieties, or a trisubstituted triazine ring with three PSP substituents, or a polyalkylene polyamine having pendant substituted oxo-piperazinyl-traizine moieties (PIP-T), that is, having pendant triazine rings substituted with PSP substituents. The stabilizers are unexpectedly effected when used without an antioxidant which produces yellowing, if used. Either pigmented or unpigmented PSP-stabilized PP fibers, and particularly fibers pigmented with white or pastel dyes, and having a non-alkaline "finish" are especially benefitted.
    Type: Grant
    Filed: July 13, 1987
    Date of Patent: May 29, 1990
    Assignee: The BF Goodrich Company
    Inventors: George Kletecka, John T. Lai, Pyong N. Son
  • Substituted aminoxyethyl sulfoxides and sulfones
    Patent number: 4929659
    Abstract: Substituted dibenzyl aminoxyethyl sulfoxides and sulfones of the formula ##STR1## are prepared by the reaction of the appropriate dibenzylhydroxylamine compound and the appropriate vinyl sulfoxide or sulfone, said compounds being useful as color improvers and stabilizers in various polymeric substrates.
    Type: Grant
    Filed: July 14, 1988
    Date of Patent: May 29, 1990
    Assignee: Ciba-Geigy Corporation
    Inventor: Ramanathan Ravichandran
  • Compositions containing stabilized unsaturated polyester resins
    Patent number: 4925904
    Abstract: A new composition is disclosed which contains a cross linkable unsaturated polyester and a phenothiazine. The new composition has substantially improved shelf life and is particularly useful as an adhesive and for trowelling.
    Type: Grant
    Filed: August 4, 1988
    Date of Patent: May 15, 1990
    Assignee: Hilti Aktiengesellschaft
    Inventor: Arno P. O. Schmidt
  • Mixture for stabilizing polyurethanes
    Patent number: 4925888
    Abstract: A mixture for stabilizing polyurethanes contains(a) an amine of the formula I ##STR1## (b) a mixture of the benzotriazoles II and III ##STR2## in which n is chosen so that the mean molecular weight of the mixture is greater than 600, and(c) .alpha.-tocopherol, if necessary mixed with tris-(nonylphenyl) phosphite, and polyurethanes contain from 0.005 to 5.0% by weight, based on the material to be stabilized, of this mixture.
    Type: Grant
    Filed: October 21, 1988
    Date of Patent: May 15, 1990
    Assignee: BASF Aktiengesellschaft
    Inventors: Alexander Aumueller, Peter Neumann, Peter Spang, Guenter Matzke, Hubert Trauth
  • Thermally stabilized resin coatings for optical fibers
    Patent number: 4923915
    Abstract: UV-curable urethane-acrylate resin systems of improved thermal stability in the cured state are provided, the resins being of polyurethane acrylate, polyurea acrylate, and/or polyurethane/polyurea acrylate composition and being thermally stabilized by the addition of a combination of stabilizers which includes a hindered piperidine derivative and a hindered phenol derivative. The stabilized resin systems, useful for example for the protective coating of glass optical fibers, retain their rapid UV curing characteristics.
    Type: Grant
    Filed: May 18, 1988
    Date of Patent: May 8, 1990
    Assignee: Corning Incorporated
    Inventor: Eric H. Urruti
  • Stabilizing polymers
    Patent number: 4921893
    Abstract: both R.sub.1 's are CH.sub.3 or together form --CH.sub.2).sub.5 ;both R.sub.2 's are CH.sub.3 or together form --CH.sub.2).sub.5 ;R.sub.3 has a significance of R, independently of R, except for oxygen;X is --O--, --NH-- or ##STR2## m is an integer from 1 to 4 inclusive; R.sub.4 is a saturated or unsaturated aliphatic group unsubstituted or substituted by one or two groups selected from --OH and C.sub.1-4 alkoxy and which can be interrupted by an oxygen or sulphur atom; or an aromatic group unsubstituted or substituted by one or two groups selected from --OH, C.sub.1-4 alkyl and C.sub.1-4 alkoxy are useful as U.V. light stabilizers in polymeric organic compounds.
    Type: Grant
    Filed: December 3, 1987
    Date of Patent: May 1, 1990
    Assignee: Sandoz Ltd.
    Inventor: Lajos Avar
  • Liquid crystalline polyester siloxanes
    Patent number: 4920191
    Abstract: Liquid crystalline polyester-siloxanes are provided resulting from the condensation of hydroxybenzoic acid with a mixture of 4,4'-(1,1,3,3-tetramethyl-1,3-disiloxanediyl)bisbenzoic acid and a dihydric phenol such as biphenol or hydroquinone. Terephthalic acid also can be used.
    Type: Grant
    Filed: March 6, 1989
    Date of Patent: April 24, 1990
    Assignee: General Electric Company
    Inventors: Matthew E. Langer, Peter P. Policastro, Allan R. Shultz
  • Scorch retarder for halogenated elastomers
    Patent number: 4920165
    Abstract: In accordance with the present invention there is provided a vulcanizable halogenated butyl rubber compound having an improved degree of scorch resistance without causing unreasonably long cure time. The compound is characterized in that it comprises a retarder conforming structurally to ##STR1## wherein X is a C.sub.1 -C.sub.6 alkyl andn is an integer from 0 to 4.The physical properties of the compound are substantially unchanged by the incorporation of the retarder.
    Type: Grant
    Filed: July 7, 1987
    Date of Patent: April 24, 1990
    Assignee: Mobay Corporation
    Inventors: Wolfgang Warrach, Mark S. Reed
  • N-(2,2,6,6,-tetraalkylpiperidinyl-4)-N'-phenyl oxalic acid diamides
    Patent number: 4916175
    Abstract: Compounds are provided which are useful as light stabilizers for polymeric materials and which have the formula ##STR1## wherein R.sub.1, R.sub.2 and R.sub.4 are organic radicals, R.sub.3 and R.sub.15 are hydrogen or organic radicals and R is hydrogen, oxygen or an organic radical.
    Type: Grant
    Filed: November 5, 1987
    Date of Patent: April 10, 1990
    Assignee: Sandoz Ltd.
    Inventor: Lajos Avar
  • Adducts of metabrominated phenols and polyfunctional epoxides
    Patent number: 4914185
    Abstract: Adducts of metabrominated monophenols such as 3,5-dibromo-2,4,6-trimethylphenol and multifunctional epoxides such as cresol-formaldehyde epoxy novolac resins are disclosed to be useful in formulations for encapsulating electronic components.
    Type: Grant
    Filed: April 14, 1986
    Date of Patent: April 3, 1990
    Assignee: The Dow Chemical Company
    Inventors: Chun S. Wang, Abel Mendoza
  • Ionically conductive macromolecular material
    Patent number: 4914161
    Abstract: Ionically conductive macromolecular material constituted by a salt in solution in a polymer, the said salt comprising an anion present in the form of a polyether chain one end of which carries an anionic function and which can be applied to the obtention of electrochemical accumulators.
    Type: Grant
    Filed: July 11, 1986
    Date of Patent: April 3, 1990
    Assignees: Societe Nationale Elf Aquitaine, Hydro-Quebec
    Inventors: Daniel Muller, Jean-Michel Chabagno, Herve Cheradame, Jean-Francois Le Pert, Michel Leveque
  • Crosslinkable flame retardant compositions of olefinic rubber and polyphenylene ether
    Patent number: 4910241
    Abstract: Flame retardant crosslinking admixtures of an olefinic rubber, a polyphenylene ether resin, an aromatic phosphate, a crosslinking agent, and optionally a stable brominated material are described. Electrically conductive articles, such as wires and cables, in which the compositions are incorporated as insulation material, and methods for their preparation, are also disclosed.
    Type: Grant
    Filed: August 25, 1983
    Date of Patent: March 20, 1990
    Assignee: General Electric Company
    Inventors: Visvaldis Abolins, Joseph E. Betts, Fred F. Holub, Gim F. Lee, Jr.