Patents Examined by Kriellion Morgan
  • Patent number: 5814691
    Abstract: The invention relates to a PVC composition comprising a stabilizer combination of (b) polyDHP of the formula I ##STR1## where the radicals T, L, R, R', R" are as defined in claim 1, (c) a substance from the group consisting ofcrystalline hydrotalcites,crystalline or amorphous zeolites,crystalline or amorphous dawsonites, magadiites or kenyaites, disaccharide alcohols andsterically hindered amines containing the structural unit ##STR2## in which R.degree. is hydrogen or methyl, and (d) at least one zinc, aluminium or lanthanoid compound.
    Type: Grant
    Filed: December 4, 1995
    Date of Patent: September 29, 1998
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Karl Josef Kuhn, Wolfgang Wehner
  • Patent number: 5576377
    Abstract: The present invention relates to colored polymer moulding materials which give rise to colored markings on a dark background with a very high contrast ratio on the absorption of laser energy.
    Type: Grant
    Filed: March 20, 1995
    Date of Patent: November 19, 1996
    Assignee: Bayer AG
    Inventors: Aziz El Sayed, Frank Gerling, Salvatore Messina, Herbert Magerstedt, Karsten-Josef Idel, Edgar Ostlinning
  • Patent number: 5278209
    Abstract: Only two symmetrical stabilizers in a polyolefin or copolymer thereof, provide thermooxidative ("TO") or antioxidative ("AO") stability. One is an arylphosphite or arylfluorophosphite; the other is a monomolecular tri-substituted triazine in which each of three chlorine atoms on a trihalo-s-triazine is substituted with a piperazinone in which the N atom in the 4-position is alkylated. Only a trace amount of phosphite, at least 0.01 phr but less than 0.1 phr, is used so that the ratio of the piperazinone-substituted stabilizer to ester is greater than 1; additional phosphite has no noticeable effect. The trace amount of phosphite has a surprising booster effect, giving the stabilized composition excellent TO stability. Articles thermoformed from the stabilized polyolefin or copolymer thereof may be used under the hood or the dash of a vehicle, and, in containers for packaging goods, all of which articles are subject to TO degradation even if they are not subject to ultraviolet light degradation.
    Type: Grant
    Filed: May 26, 1992
    Date of Patent: January 11, 1994
    Inventors: George Kletecka, John T. Lai
  • Patent number: 5087645
    Abstract: An O/W water paint having excellent dispersibility and stability is prepared according to a phase conversion process comprising adding ammonia or an amine and water to a solution of an epoxy resin, a hardener resin, and an acrylic resin in an organic solvent or to a molten mixture of these resins to neutralize the acrylic resin. In view of adhesion of a coat to metal and workability, branched alkylamines or heterocyclic amines are suitable as the neutralizing amine. In applying this paint, steam optionally containing fine water droplets is preferably applied to a wet coat prior to drying.
    Type: Grant
    Filed: November 17, 1988
    Date of Patent: February 11, 1992
    Assignee: Toyo Seikan Kaisha Ltd.
    Inventors: Shunji Kojima, Yoshiki Watanabe, Hiroaki Goto, Toshinori Moriga
  • Patent number: 5059643
    Abstract: Polyamides are stabilized by phenothiazines.
    Type: Grant
    Filed: June 12, 1987
    Date of Patent: October 22, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Josef Buysch, Hans-Georg Gelhaar, Erich Istel, Franz Zimmermann
  • Patent number: 5059675
    Abstract: Disclosed are compositions useful as surface coatings for nonwoven substrates which compositions are reaction products of a melamine formaldehyde compound, long chain saturated alcohols and long chain saturated or unsaturated polyethoxylated alcohols. The invention compositions when used to surface size paper impart oil, water and polar solvent resistance thereto. The compositions may be used alone or as substantial replacements for anionic or non-ionic fluorocarbon based surface sizes that are typically used to impart oil resistance to paper.
    Type: Grant
    Filed: November 14, 1988
    Date of Patent: October 22, 1991
    Assignee: PPG Industries, Inc.
    Inventors: William W. Carlin, Sai H. Hui, John D. Mansell
  • Patent number: 5057562
    Abstract: A process is disclosed for the photochemical stabilization of undyed and dyed polypropylene fibre material with light stabilizers, which process comprises treating said material with an aqueous solution containing a light stabilizer from the class of the sterically hindered amines.
    Type: Grant
    Filed: June 8, 1989
    Date of Patent: October 15, 1991
    Assignee: Ciba-Geigy Corporation
    Inventor: Gerhard Reinert
  • Patent number: 5039723
    Abstract: A synthetic resin composition stabilized particularly against the deterioration caused by the action of heat and light, which comprises 100 parts by weight of a synthetic resin, 0.001 to 10 parts by weight of a cyclic phosphite compound represented by the following general formula (I) and 0.001 to 10 parts by weight of a hindered amine compound having a group represented by the following general formula (II) in its molecule: ##STR1## wherein R.sub.1 stands for a tert-butyl or tert-amyl group; R.sub.2 stands for a C.sub.1.about.9 alkyl group; R.sub.3 stands for a hydrogen atom or a C.sub.1.about.4 alkyl group and R.sub.4 stands for a C.sub.1.about.30 alkyl group.
    Type: Grant
    Filed: July 31, 1989
    Date of Patent: August 13, 1991
    Assignee: Adeka Argus Chemical Co., Ltd.
    Inventors: Tohru Haruna, Kazunori Nishikawa
  • Patent number: 5037865
    Abstract: A resin dispersion type aqueous coating composition comprising a continuous phase of water medium and an aqueous resin and water insoluble resin microparticles uniformly dispersed, as a discontinuous phase, in said continuous phase, which is characterized in that said water insoluble resin is prepared by the reaction of a resin which is liquid at room temperatures and bears in its molecule functional groups capable of reacting with an epoxy or isocyanate group, and an epoxy compound or an isocyanate compound so as to give 10.about.100% reaction rate of the epoxy or isocyanate group contained in said compound. The present aqueous coating composition is excellent in its application characteristics and can give a coating with excellent gloss and smoothness.
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: August 6, 1991
    Assignee: Nippon Paint Co., Ltd.
    Inventors: Motoyoshi Yoshikawa, Hideyoshi Noda, Sakuichi Konishi
  • Patent number: 5032631
    Abstract: Polyester molding compositions include an effective amount of a triazine-based antioxidant and a benzophenone ultraviolet light absorber sufficient to achieve a clor difference, as calculated in CIELab units under illuminant "D-65" according to ASTM Standard D-2244, of less than about 10,0, when exposed in a Xenon arc weather-ometer operated according to SAE J1885 for 315 Kj/sq.m. The triazine-based antioxidant is of the formula: ##STR1## wherein R is a phenolic group attached to the triazine ring via a C1 to C5 alkyl or an ester substituent. Preferably, the triazine-based antioxidant is 3,5-di-tert-butyl-4-hydroxyhydrocinnamic acid triester with 1,3,5-tris-(2-hydroxyethyl)-s-triazine-2,4,6-(1H, 3H, 5H) trione. The benzophenone UV-absorber is of the general formula: ##STR2## where R' is hydrogen or an alkyl radical.
    Type: Grant
    Filed: November 10, 1988
    Date of Patent: July 16, 1991
    Assignee: Hoechst Celanese Corporation
    Inventors: Michael D. Golder, Bruce M. Mulholland
  • Patent number: 5030731
    Abstract: Blocked benzotriazoles of the formula I or II ##STR1## wherein x is 1 or 2, R.sup.1 in the case of x=1 and in the formula II is an acyl group of the formula --CO--R.sup.5, a sulfonyl group of the formula --SO.sub.2 --R.sup.6, a phosphoryl group of the formula --P(O).sub.r (R.sup.14)(R.sup.15), and in the case of x=2 is --CO-- or a diacyl group of the formula --CO--CO-- or --CO--R.sup.7 --CO--, and R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, R.sup.14 and R.sup.15 have the meanings defined in claim 1, are crypto light stabilizers which can be activated by short-wave irradiation. Their use in coating materials is of interest in cases in which light stabilizers containing the free OH compounds have disadvantages with regard to their application.
    Type: Grant
    Filed: October 24, 1989
    Date of Patent: July 9, 1991
    Assignee: Ciba-Geigy Corporation
    Inventors: Mario Slongo, Manfred Rembold
  • Patent number: 5028645
    Abstract: Di-(2,2,6,6-tetramethyl-4-piperidinyl) succinate and glutarate are very effective light stabilizers for thermoplastics, particularly for polyolefins.
    Type: Grant
    Filed: August 8, 1989
    Date of Patent: July 2, 1991
    Assignees: Ciba-Geigy Corp., Sankyo Company Ltd.
    Inventors: Francois Gugumus, Jean Rody
  • Patent number: 5026750
    Abstract: 1-Hydrocarbyloxy hindered amine mercaptoacid esters, thioacetals, sulfides and disulfides are effective light stabilizers for protecting a variety of polymer substrates from the deleterious effects of actinic light.
    Type: Grant
    Filed: February 14, 1990
    Date of Patent: June 25, 1991
    Assignee: Ciba-Geigy Corporation
    Inventor: Ramanathan Ravichandran
  • Patent number: 5026749
    Abstract: The novel compounds of the formula (I) ##STR1## in which n is 1 or 2, R.sub.1 is hydrogen, O.multidot., OH, NO, CH.sub.2 CN, C.sub.1 -C.sub.8 -alkyl, allyl, benzyl, hydroxyalkyl, alkoxy, cycloalkoxy or acyl, R.sub.2 is alkyl, cycloalkyl, phenylalkyl, alkoxyalkyl, tetrahydrofurfuryl or a group of the formula (II) and A is a monovalent or divalent moiety, in which R.sub.1 is as defined above, and, if n=1, A is a group of the formula (III) in which each R.sub.9 independently is hydrogen or methyl, r is zero or 1 and are useful as light stabilizers, heat stabilizers and oxidation stabilizers for organic materials.
    Type: Grant
    Filed: May 14, 1990
    Date of Patent: June 25, 1991
    Assignee: Ciba-Geigy Corporation
    Inventors: Giuseppe Cantatore, Valerio Borzatta, Franca Masina
  • Patent number: 5025050
    Abstract: This invention relates to an ultraviolet-radiation stabilizer flame retarding system containing an N,N'-ethylene-bis(tetrabromophthalimide) or an N,N'-bis(tetrabromophthalimide) predominate product, a hindered-amine light stabilizer, a 2-(2'-hydroxyphenyl)benzotriazole, a titanate, and, optionally, Mg(OH).sub.2 and/or ZnO.
    Type: Grant
    Filed: March 16, 1990
    Date of Patent: June 18, 1991
    Assignee: Ethyl Corporation
    Inventor: James E. Torres
  • Patent number: 5025048
    Abstract: A composition comprising (A) (i) a crosslinked organosilicon polymer or crosslinkable organosilicon prepolymer comprising alternating (a) cyclic polysiloxane or tetrahedral siloxysilane residues and (b) polycyclic hydrocarbon residues derived from polycyclic polyenes having at least two carbon-carbon double bonds in their rings linked through carbon to silicon bonds, wherein at least one of the cyclic polysiloxanes or tetrahedral siloxysilanes (a) or the polycyclic polyenes (b) used to form the polymer or prepolymer has more than two reactive sites; or (ii) a crosslinked or crosslinkable linear poly(organohydrosiloxane) polymer having a least 30% of its .tbd.SiH groups reacted to hydrocarbon residues derived from polycyclic polyenes having at least two carbon-carbon double bonds in their rings; and (B) as an antioxidant, a compound comprised of at least one hindered phenol and at least one hindered amine; and the process of making the same, are disclosed.
    Type: Grant
    Filed: April 12, 1990
    Date of Patent: June 18, 1991
    Assignee: Hercules Incorporated
    Inventor: Julia S. Burnier
  • Patent number: 5023284
    Abstract: This invention is directed to a stabilizer useful to retard transesterification in moldable polymer blends containing polyester(s) during processing of the blends at elevated temperatures, particularly at high temperatures above about 285.degree. C. More particularly, the stabilizer comprises a phosphate-epoxy adduct. The stabilizer may optionally further comprise a reactive functionality component comprising a compound having a imide or oxazoline functionality and/or a hindered phenol component. The invention is also directed to a composition comprising the stabilizer and a particularly defined polymer blend.
    Type: Grant
    Filed: August 9, 1989
    Date of Patent: June 11, 1991
    Assignee: Ford Motor Company
    Inventors: Mo-Fung Cheung, Amos Golovoy, Henk van Oene
  • Patent number: 5023285
    Abstract: A composition is provided which comprises a 3,9-bis (2,4,6-tri-t-alkylphenoxy)-2,4,8,10-tetroxa-3,9-diphosphaspiro[5.5]undecan e, and polymer compositions are provided which include a polymer and an effective amount of one or more 3,9-bis(2,4,6-tri-t-alkylphenoxy)-2,4,8,10-tetroxa-3,9-diphosphaspiro[5.5] undecane.
    Type: Grant
    Filed: July 25, 1988
    Date of Patent: June 11, 1991
    Assignee: G E Specialty Chemicals
    Inventor: William E. Horn
  • Patent number: 5021486
    Abstract: Bis(1-hydrocarbyloxy-2,2,6,6-tetraalkylpiperidin-4-yl) malonate or malonamide derivatives of 1,3,5-triazine corresponding to the formula ##STR1## are effective light stabilizers in a wide variety of substrate systems.
    Type: Grant
    Filed: February 14, 1989
    Date of Patent: June 4, 1991
    Assignee: Ciba-Geigy Corporation
    Inventor: James P. Galbo
  • Patent number: 5021480
    Abstract: Compounds which contain azo linkages as well as a hindered amine light stabilizer moiety of low basicity function as free radical polymerization initiators and provide a polymer containing a hindered amine stabilizer chemically bonded to said polymer. The low basicity of the instant compounds prevents interaction with acid catalysts used in some polymerization systems.
    Type: Grant
    Filed: February 14, 1990
    Date of Patent: June 4, 1991
    Assignee: Ciba-Geigy Corporation
    Inventor: Ramanathan Ravichandran