(c=x)x Group Patents (Class 524/219)
-
Patent number: 6423304Abstract: Blooming and/or syneresis in gel formulations can be reduced or eliminated by adding to an organic mixture an effective amount of a polyamide gelling agent having a softening point of less than about 105° C. wherein the polyamide is the reaction product of one or more diamines, optionally one or more mono-amines, one or more hydrogenated C36 dimer acids, optionally one or more C2-22 dicarboxylic acids, and optionally one or more C2-22 monocarboxylic acids.Type: GrantFiled: June 13, 2001Date of Patent: July 23, 2002Assignee: Cognis CorporationInventors: Shailesh Shah, Sobhy El-Hefnawi, Douglas C. Rhubright
-
Patent number: 6300390Abstract: The present invention provides a resin-based dental restorative that exhibits low volumetric shrinkage, high filler loading and the high strength required for load bearing restorations, yet maintains a glossy appearance, even after substantial wear. To this end, a dispersant is mixed with a methacrylate resin and a structural filler having a mean particle size between about 0.05 &mgr;m and about 0.50 &mgr;m. The composite is useful in stress bearing restorations and in cosmetic restorations. The structural filler used is typically ground to a mean particle size of less than 0.5 &mgr;m and also includes a microfill having a mean particle size less than 0.05 &mgr;m to improve handling and mechanical characteristics. The preferred dental composites maintain their surface finish even after substantial use and also have the strength properties of hybrid composite resins.Type: GrantFiled: May 6, 1999Date of Patent: October 9, 2001Assignee: Kerr CorporationInventor: Christos Angeletakis
-
Patent number: 6153304Abstract: Articles of manufacture are provided with a low surface energy, permanently non-stick, non-fouling and ice-phobic surface by a system of coating comprising applying a primary coating having a surface energy of 22-28 dynes/cm.sup.2 comprising a novel polymeric material having non-stick and hardness properties and then applying a top coating having lower surface energy of from about 18-21 dynes/cm.sup.2 comprising a siliconic polymer and interdigitating means to make the top coating permanent, the means preferably comprising a bi- or polyfunctional organic compound adapted to wet the surface of the primary coating and chemically or physically bond thereto and to couple to the siliconic polymeric substance in the top coating. The coated substrates are resistant to marking by graffiti, to adherence by marine fouling organisms, and frozen ice on the surface is easily removed.Type: GrantFiled: August 13, 1999Date of Patent: November 28, 2000Assignee: Decora IncorporatedInventors: John Ralph Smith, Nissim N. Garti
-
Patent number: 6127450Abstract: The present invention provides a resin-based dental restorative that exhibits high condensability, low volumetric shrinkage and low shrinkage stress. To this end, one or more of a rheological modifier, dispersant and fluorocopolymer are mixed with a methacrylate resin and a fine mineral filler in amounts effective to improve the condensability of the resulting composite to achieve amalgam-like condensation, to reduce the volumetric shrinkage to less than about 2% during polymerization, to improve wear resistance, and to provide a composite with generally improved physical properties.Type: GrantFiled: June 9, 1998Date of Patent: October 3, 2000Assignee: Kerr CorporationInventor: Christos Angeletakis
-
Patent number: 6111055Abstract: An ester-terminated dimer acid-based polyamide may be blended with a solvent to form a gel. The solvent may be flammable, and a wick may be added to the resulting gel so as to form a candle. Depending on the composition, the candle may be formed into a free standing pillar, or may be better suited to being placed in a container. The solvent may be mineral oil. A solid coating may be placed around the candle, for advantages including to enhance the mechanical stability of the gelled body, and to eliminate the tendency of a gel to have an oily feel and to accept noticeable fingerprints. The solvent which, in combination with the ester-terminated dimer acid-based polymer forms a gel, may be or include a fragrance material, an insecticide or an insect repellent. A wick may or may not be present in this gel, but in any event, the composition provides for the release of the fragrance, insecticide or insect-repellent.Type: GrantFiled: September 26, 1997Date of Patent: August 29, 2000Assignees: Union Camp Corporation, Bush Boake AllenInventors: Vivian Berger, Charles R. Frihart, Ronald L. Gordon, Jochen Heydel, Richard C. MacQueen, Mark S. Pavlin, Virgil Williams
-
Patent number: 6096813Abstract: Disclosed are curable compositions such as adhesives and coatings containing as an adhesion promoter N-acyl amino acids having the structure: ##STR1## wherein n is 0 or 1, R.sup.1 is an alkyl or aryl group having from one to 10 carbon atoms optionally including --COOH, R.sup.2 is an alkylene or arylene group having from one to 10 carbon atoms, and R.sup.3 is H, --COOH, alkyl or aryl groups having from one to 10 carbon atoms, or carboxyl-substituted alkyl or aryl groups having from one to 10 carbon atoms.Type: GrantFiled: September 24, 1997Date of Patent: August 1, 2000Assignee: PPG Industries Ohio, Inc.Inventors: Karl F. Schimmel, Dennis W. Jones, Umesh C. Desai
-
Patent number: 6080806Abstract: A water-redispersible powder composition comprising (a) 100 parts by weight of a powder consisting of a water-insoluble film-forming polymer prepared from at least one ethylenically unsaturated monomer and at least one monomer selected from monomers having a carboxylic function and acrylamide or methacrylamide, and (b) 2-40 parts by weight and preferably 8-22 parts by weight of at least one amino acid or a salt thereof. A method for preparing said composition and the use thereof are also disclosed.Type: GrantFiled: October 6, 1998Date of Patent: June 27, 2000Assignee: Rhodia ChimieInventors: William Bett, Jean-Francois Colombet
-
Patent number: 5998570Abstract: A low molecular weight, ester-terminated polyamide may be blended with a liquid hydrocarbon to form a transparent composition having gel consistency. The ester-terminated polyamide is prepared by reacting "x" equivalents of dicarboxylic acid wherein at least 50% of those equivalents are from polymerized fatty acid, "y" equivalents of diamine such as ethylene diamine, and "z" equivalents of monoalcohol having at least 4 carbon atoms. The stoichiometry of the reaction mixture is such that 0.9.ltoreq.{x/(y+z)}.ltoreq.1.1 and 0.1.ltoreq.{z/(y+z)}.ltoreq.0.7. The reactants are heated until they reach reaction equilibrium. The gel contains about 5-50% ester-terminated polyamide with the remainder preferably being pure hydrocarbon. The gels are useful in formulating personal care products and other articles wherein some degree of gel-like or self-supporting consistency is desired.Type: GrantFiled: May 6, 1998Date of Patent: December 7, 1999Assignee: Union Camp CorporationInventors: Mark S. Pavlin, Richard C. MacQueen
-
Patent number: 5981637Abstract: The invention relates to a rubber composition which contains a tris (maleamic acid derivative)amine as an anti-reversion additive. The invention also relates to a tire having a component of such rubber composition.Type: GrantFiled: August 17, 1998Date of Patent: November 9, 1999Assignee: The Goodyear Tire & Rubber CompanyInventors: Edward John Blok, Lawson Gibson Wideman, Paul Harry Sandstrom, John Eugene Varner
-
Patent number: 5952411Abstract: A novel compound bearing urethane linkage of formula as shown herebelow, which is an adduct of ricinoleic ester and isocyanate, useful as a plasticizer for polyvinylchloride (PVC) and a process for the preparing the compound bearing urethane linkage by reacting fatty acid esters bearing hydroxyl groups with an organic isocyanate in the presence of a catalyst at a temperature in the range of 30.degree.-100.degree. C.Type: GrantFiled: April 27, 1995Date of Patent: September 14, 1999Assignee: C.S.I.R.Inventors: Srinivasan Subbagiri Ramaswamy Iyengar, Raut Kundalik Ganpat, Saxena Prabhat Kumar, Sivaram Swaminathan
-
Patent number: 5925697Abstract: A thermoplastsic molding composition comprising thermoplastic polyurethane resin and about 0.05 to 2 percent of a wax is disclosed. The composition which offers processing advantages, including release and cosmetic properties, is characterized in that the wax contains acylation products of hydroxy groups and of amino groups of amino alcohols.Type: GrantFiled: February 20, 1997Date of Patent: July 20, 1999Assignee: Bayer AktiengesellschaftInventors: Wolfgang Brauer, Friedemann Muller, Jurgen Winkler, Hans-Georg Hoppe, Bernhard Schulte, Karl-Heinz Wolf, Hans-Georg Wussow
-
Patent number: 5874493Abstract: The subject matter of the invention is the use of certain piperidine compounds of formula I ##STR1## in combination with an oxalanide UV absorber for the stabilization of pigmented or unpigmented polyolefins against the negative consequences of UV radiation. The invention also relates to compositions comprising a piperidine compound of formula I, a polyolefin, and an oxalanide UV absorber and compositions comprising a compound of formula I and a second HALS compound.Type: GrantFiled: April 4, 1997Date of Patent: February 23, 1999Assignee: Clariant Finance (BVI) LimitedInventor: Joseph R. Webster
-
Patent number: 5837755Abstract: A urea-resin composition comprising a urea-formaldehyde reaction product, cellulose material, and at least one substance selected from the group cosisting of .alpha.-amino acid, powdered collagen and gelatin. The present invention provides urea-resin compositions which, having a property to harden under heating, are themselves biodegradable and have sufficient physical properties to be applied for practical purposes.Type: GrantFiled: March 29, 1996Date of Patent: November 17, 1998Assignee: Showa Highpolymer Co., Ltd.Inventors: Eiichiro Takiyama, Yoshitaka Hatano
-
Patent number: 5728757Abstract: The present invention relates to a zinc salt of the formula: ##STR1## and rubber compounds containing such salts.Type: GrantFiled: August 9, 1996Date of Patent: March 17, 1998Assignee: The Goodyear Tire & Rubber CompanyInventors: Richard Michael D'Sidocky, Lawson Gibson Wideman, Bernard Matthew Bezilla, Jr., Cheng Shaw
-
Patent number: 5700574Abstract: A sizing composition for glass is provided. The sizing composition comprises a vinyl acetate copolymer emulsion, a polyvinyl acetate copolymer latex, and a vinyl acrylic copolymer emulsion.Type: GrantFiled: June 7, 1995Date of Patent: December 23, 1997Assignee: Owens-Corning Fiberglas Technology, Inc.Inventors: Martin C. Flautt, Leonard J. Adzima, Douglas B. Mann
-
Patent number: 5696188Abstract: The present invention relates to rubber compounds containing acids of the formulae: ##STR1## or mixtures thereof.Type: GrantFiled: August 9, 1996Date of Patent: December 9, 1997Assignee: The Goodyear Tire & Rubber CompanyInventors: Richard Michael D'Sidocky, Lawson Gibson Wideman
-
Patent number: 5602208Abstract: The invention relates to the use of aminoalkanolamide esters as processing aids, more particularly as lubricants and/or mold release agents, for thermoplastics.Type: GrantFiled: March 14, 1994Date of Patent: February 11, 1997Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Joerg-Dieter Klamann, Dieter Kramptiz, Andreas Lippmann, Uwe Ploog
-
Patent number: 5580913Abstract: A process for the homogeneous incorporation of a stabilizers into a polycondensate in which the stabilizer is first applied to a finely divided solid polycondensate and the mixture is then revolved in the solid phase of the polycondensate, at temperatures of at least 80.degree. C.Products having an improved color and stability are obtained by this mild incorporation of stabilizer.Type: GrantFiled: December 29, 1994Date of Patent: December 3, 1996Assignee: Huels AktiengesellschaftInventors: Salih Mumcu, Hasso Daebel
-
Patent number: 5531546Abstract: For fastening anchoring means, such as anchor rods, in solid accommodating materials without expansion pressure, mortar compositions are used, which consist of a hardener and a resin. To improve the strength properties, vinyl ester urethane resin is employed, which optionally can be accelerated.Type: GrantFiled: April 19, 1995Date of Patent: July 2, 1996Assignee: Hilti AktiengesellschaftInventors: Alwin Herdlicka, Ludwig Gebauer, Gabriele Grundmann
-
Patent number: 5521236Abstract: Flame retarded and stabilized polyester composition contain: (a) a polyester resin derived from a cyclohexanemethanol and a carbocyclic acid; (b) a polyphosphate containing a bridging unit between the phosphate moieties therein which is derived from an arylene-containing diol; and (c) a stabilizer which is either:(i) a combination of a hindered phenol-substituted isocyanurate and an epichlorohydrin-bisphenol A reaction product; or(ii) a combination of an ester of a hindered phenol and oxidized polyethylene; when the arylene-containing diol is a monoarylene-containing diol, such as resorcinol or hydroquinone; or(iii) a hindered phenol-substituted isocyanurate; or(iv) a phenolic oxamide antioxidant; or(v) combination of a hindered phenol-substituted isocyanurate and an epichlorohydrin-bisphenol A reaction product; or(vi) combination of an ester of a hindered phenol and oxidized polyethylene;when the arylene-containing diol is a biarylene-containing diol with an alkylene bridging group between the two arylene grType: GrantFiled: November 1, 1994Date of Patent: May 28, 1996Assignee: Akzo Nobel N.V.Inventors: Paul Y. Moy, Gerald R. Alessio
-
Patent number: 5498652Abstract: A composition of matter comprising a polyolefin and an effective amount of an omega-acetoxy N-substituted carbonamide selected from the group consisting of (1) an N-(omega-acetoxyalkyl) carbonamide of the formula: ##STR1## wherein x is 1 to 6, R is alkenyl or alkyl group of 11 to 23 carbon atoms and (2) an N-alkyl omega-acetoxycarbonamide of the formula: ##STR2## wherein y is 1 to 15, R' is alkenyl group of 12 to 24 carbon atoms.Type: GrantFiled: August 18, 1994Date of Patent: March 12, 1996Assignee: Witco CorporationInventor: Bing-Lin Chen
-
Patent number: 5424349Abstract: Tertiary amides have been developed which have low volatility and good thermal stability and which are effective in stabilizing organic materials that are normally susceptible to oxidative deterioration. The novel antioxidants are tertiary amides corresponding to the formula: ##STR1## wherein R is a mono-, di-, or trivalent aromatic or saturated aliphatic hydrocarbon group containing 1-20 carbons; n is an integer of 1-3 which is equal to the valence of R; R' is phenyl, benzyl, or C.sub.1 -C.sub.6 alkyl; m is an integer of 1-3; R" is a C.sub.1 -C.sub.4 alkylene group; Z and Z' are independently selected from hydrogen and alkyl; and Q is carbonyl or sulfonyl.Type: GrantFiled: August 9, 1993Date of Patent: June 13, 1995Assignee: Albemarle CorporationInventor: Vincent J. Gatto
-
Patent number: 5393814Abstract: A composition of matter comprising a polyolefin and an effective amount of at least one alkenyl monoamide of a dicarboxylic acid wherein the alkenyl group has from about 12 to about 24 carbon atoms.Type: GrantFiled: November 17, 1993Date of Patent: February 28, 1995Assignee: Witco CorporationInventor: Bing-Lin Chen
-
Patent number: 5358665Abstract: Diethanolamine and monocarboxylic acid ester represented by the formula:RC(O)OR'are reacted to produce a reaction mixture comprising diethanol amide of monocarboxylic acid represented by the formula:RC(O)N(CH.sub.2 CH.sub.2 OH).sub.2and hydroxy-functional amide ester represented by the formula: ##STR1## wherein each R is independently a hydrophobic hydrocarbon group and R' is an alkyl group containing from 1 to about 18 carbon atoms. The reaction mixture is useful as an antistatic composition for formulating with polymers, especially polyolefins.Type: GrantFiled: August 21, 1991Date of Patent: October 25, 1994Assignee: PPG Industries, Inc.Inventors: Kenneth J. Sienkowski, Paritosh M. Chakrabarti
-
Patent number: 5310773Abstract: Perfluoroalkyl substituted neopentyl alcohols can be reacted with substituted hydroxphenylalkanoic esters to form perfluoroalkyl containing hydroxyphenylalkanoic ester antioxidants. The perfluoroalkyl substituted hindered hydroxyphenyl alkanoates are stablizers which confer superior processing stability to polymers processed at elevated temperatures such as polypropylene, as well as protecting said polymers from thermal and oxidative degradation.Type: GrantFiled: June 4, 1992Date of Patent: May 10, 1994Assignee: Ciba-Geigy CorporationInventors: Robert A. Falk, Eduard K. Kleiner
-
Patent number: 5290881Abstract: The properties of polyphenylene ether-polyarylene sulphide mixtures are improved by the addition of an agent as it is known for the improvement of the properties of polyphenylene ether-polyamide mixtures.Type: GrantFiled: May 3, 1989Date of Patent: March 1, 1994Assignee: General Electric CompanyInventor: Marinus E. J. Dekkers
-
Patent number: 5194476Abstract: Polymeric compositions characterized by their excellent thermal stability containing a polyphenylene ether or one of its blends with at least one (co)polymer of styrene and at least one compound belonging to the group of linear and/or cyclic beta diketones.Beta-diketones are capable of giving polyphenylene ether and/or its blends with styrenic polymers a long-lasting thermal stability in the molten state and of guaranteeing sufficient fluidity to ensure better processability compared to the same polymers in the known art.Type: GrantFiled: October 8, 1991Date of Patent: March 16, 1993Assignee: ECP Enichem Polimeri s.r.l.Inventors: Andrea Casarini, Giorgio della Fortuna, Aurelio De Chirico
-
Patent number: 5191003Abstract: A rubber composition comprising a rubber, a filler and a diamide compound represented by the formula: ##STR1## wherein X is hydrogen, alkyl of 1 to 18 carbon atoms, alkoxy of 1 to 18 carbon atoms, alkanoyl of 2 to 19 total carbon atoms, amino, nitro, cyano, hydroxy, carboxy or halogen, and n is an integer of 2 to 12. This rubber composition is increased in its loss factor and is useful for tires and rubber vibration isolators. For example, the resulting tires prepared from the rubber composition are improved in their gripping performance.Type: GrantFiled: August 7, 1991Date of Patent: March 2, 1993Assignee: Sumitomo Chemical Company, LimitedInventors: Naoki Inui, Chinehito Ebina, Miyuki Oikawa, Hideo Nagasaki, Shinichi Yachigo, Manji Sasaki
-
Patent number: 5162405Abstract: The present invention comprises novel single-functional and mixtures of multi-functional oligomeric performance additive compounds having one or more components of Structure A R1 ? ? ##STR1## (The definitions of R, Z1, Z2, Z3, A1, A2, A3 and y are given in the Summary Section), their uses and polymeric compounds and compositions containing them which have enhanced oxidative stabilities, enhanced ultraviolet (UV) and light stabilites and/or enhanced flame retardance. An example is the bis sulfonic acid bispotassium salt reaction product from an oligomeric caprolactone diol (TONE.RTM. 260), 2-sulfobenzoic acid anhydride and potassium carbonate, and use of this product, at levels up to about 3.0%, in a general purpose bisphenol A polycarbonate resin, to enhance the fire resistance or flame retardance of the polycarbonate resin.Type: GrantFiled: March 22, 1991Date of Patent: November 10, 1992Assignee: ELF Atochem North America, Inc.Inventors: Ronald E. MacLeay, Jose Sanchez, Daryl L. Stein
-
Patent number: 5151458Abstract: This invention relates to new highly fluid polyarylene sulphide-(PAS)-moulding compounds, preferably polyphenylene sulphide-(PPS)-moulding compounds containing low molecular weight, liquid crystalline ester(amide)s.Type: GrantFiled: April 27, 1990Date of Patent: September 29, 1992Assignee: Bayer AktiengesellschaftInventors: Hans-Detlef Heinz, Harald Pielartzik, Klaus Reinking, Rolf-Volker Meyer, Siegfried Korte
-
Patent number: 5143958Abstract: The permeability of high-permeability zones in a oil reservoir can be reduced by using a gellable aqueous composition with delayed gelation.The composition comprises:a) water;b) a high-molecular weight natural or synthetic water-soluble polymer cross-linkable by means of Cr.sup.3+ ions;c) a water-soluble inorganic Cr.sup.Type: GrantFiled: March 27, 1990Date of Patent: September 1, 1992Assignee: Eniricerche S.p.A. and Agip S.p.A.Inventors: Thomas P. Lockhart, Giovanni Burrafato
-
Patent number: 5143956Abstract: The invention relates to free-flowing polyamide molding compounds which are characterized by a content of new liquid-crystalline compounds corresponding to general formulae (I) and/or (II) and to the new liquid-crystalline compounds corresponding to general formulae (I) and/or (II).Type: GrantFiled: February 19, 1991Date of Patent: September 1, 1992Assignee: Bayer AktiengesellschaftInventors: Harald Pielartzik, Hans-Detlef Heinz, Rolf Dhein, Aziz E. Sayed
-
Patent number: 5102935Abstract: The invention relates to new, free-flowing polyamide molding compounds and blends, characterized in that they are prepared by mixing of polyamides known per se in the melt with low molecular weight, liquid-crystalline esters and/or ester amides corresponding to formula (I) and/or liquid-crystalline, oligomeric esters and/or ester amides corresponding to formula (II) and, optionally, other additives, at least one polymeric blending component being used as a further additive in the case of polyamide blends, and to the use of these liquid-crystalline (LC) additives I and/or II as flow promoters in polyamide molding compounds and blends and to a process for the production of the new polyamide molding compounds and blends. The invention also relates to the new oligomeric esters and/or ester amides corresponding to formula (II).Type: GrantFiled: September 5, 1989Date of Patent: April 7, 1992Assignee: Bayer AktiengesellschaftInventors: Hans-Detlef Heinz, Harald Pielartzik, Aziz El-Sayed, Rolf-Volker Meyer, Martin Wandel, Peter-Roger Nyssen
-
Patent number: 5086102Abstract: The invention relates to mixtures of poly(arylene sulphides), glass fibres and maleamidic acids, which are remarkable for good mechanical properties and an increased melt viscosity of the matrix resin.Type: GrantFiled: July 5, 1990Date of Patent: February 4, 1992Assignee: Bayer AktiengesellschaftInventors: Harald Pielartzik, Burkhard Kohler, Hans-Joachim Traenckner, Wolfgang Jakob, William C. Bushong
-
Patent number: 5086104Abstract: Polyester resin compositions include a crystalline thermoplastic polyester resin (such as polybutylene terephthalate), a polyester elastomer (such as a copolymer including recurring hard and soft segments) and between 0.005 to 10 parts by weight, based on 100 parts of the crystalline and elastomeric resins, of an amide compound having the formula (I) ##STR1## wherein R is an organic group such as an aromatic ring, X is an alkylene of C.sub.2 to C.sub.10 such as ethylene and propylene, Y is --COOH, --OH, --SH or --NH.sub.2 and n is 2 to 4, inclusive.Type: GrantFiled: January 31, 1991Date of Patent: February 4, 1992Assignee: Polyplastics Co., Ltd.Inventors: Mitsuo Wada, Koichi Kato
-
Patent number: 5063263Abstract: Incorporation into polyacetal molding compositions stabilized for processing with a non-meltable polymer stabilizer of 0.01-1.00 weight percent of at least one meltable co-stabilizer, said co-stabilizer being a thermal stabilizer for polyacetal, and 0.02-1.0 weight percent of at least one primary antioxidant results in significantly improved long term stability, as evidenced by greater retention of physical properties over time, of such compositions.Type: GrantFiled: June 11, 1990Date of Patent: November 5, 1991Assignee: E. I. du Pont de Nemours and CompanyInventors: Richard A. Hayes, Leonard E. R. Kosinski, Mark E. Wagman
-
Patent number: 5032632Abstract: A composition of a copolymer of ethylene and vinyl alcohol, 0.01 to 0.5 weight percent of a monovalent or divalent metal salt of an aliphatic carboxylic acid having 3 to 9 carbon atoms and 0.05 to 0.5 weight percent of a hindered phenolic antioxidant exhibits improved stability toward oxidative gel formation at elevated temperatures.Type: GrantFiled: May 15, 1990Date of Patent: July 16, 1991Assignee: E. I. du Pont de Nemours and CompanyInventor: Ronald L. Saxton
-
Patent number: 5008459Abstract: Novel compositions are described which comprise an elastomer or a lubricant and at least one compound of the formulae I or II ##STR1## The symbols R.sub.1, R.sub.2, R.sub.3, Z.sub.1 and Z.sub.2 are as defined in claim 1.The compounds of the formula II and some of the compounds of the formula I are novel, and they are used especially as antioxidants.Type: GrantFiled: December 22, 1987Date of Patent: April 16, 1991Assignee: Ciba-Geigy CorporationInventors: Hans R. Meier, Samuel Evans, Paul Dubs
-
Patent number: 4992499Abstract: Linear alternating polymers of carbon monoxide and at least one ethylenically unsaturated hydrocarbon are stabilized against thermal degradation by the inclusion therein of a stabilizing amount of a combination of a phenolic compound and an aromatic amine.Type: GrantFiled: November 30, 1989Date of Patent: February 12, 1991Assignee: Shell Oil CompanyInventors: Johannes L. M. Syrier, Hendrik Van De Weg, Robert Q. Kluttz
-
Patent number: 4972014Abstract: Incorporation into polyacetal molding compositions stabilized with a non-meltable polymer stabilizer of 0.02-1.0 weight percent of at least one amide-containing phenolic antioxidant results in significantly improved long term stability, as evidenced by greater retention of physical properties over time, of such compositions.Type: GrantFiled: June 15, 1989Date of Patent: November 20, 1990Assignee: E. I. du Pont de Nemours and CompanyInventors: Richard A. Hayes, Leonard E. R. Kosinski, Mark E. Wagman
-
Patent number: 4963605Abstract: The invention relates to a stabilized polyolefin composition, which composition is stabilized against deterioration caused by contact with heavy metals and improved in coloration properties. This is achieved by blending a polyolefin with:(A) a phenolic compound represented by the formula (I), ##STR1## wherein R.sub.1 represents a C.sub.1 -C.sub.3 alkyl group, (B) a metal deactivator having one or more ##STR2## groups in the side chain, and (C) a sulfur-containing compound represented by the formula (II-1), (II-2), (II-3) or (II-4): ##STR3## wherein R.sub.2 represents a C.sub.4 -C.sub.20 alkyl group, ##STR4## wherein R.sub.3 represents a C.sub.4 -C.sub.20 alkyl group, ##STR5## wherein R.sub.4 represents a C.sub.3 -C.sub.18 alkyl group, and R.sub.5 and R.sub.6 independently represent a hydrogen atom or a C.sub.1 -C.sub.6 alkyl group, ##STR6## wherein R.sub.7 represents a C.sub.3 -C.sub.18 alkyl group.Type: GrantFiled: March 16, 1989Date of Patent: October 16, 1990Assignee: Sumitomo Chemical Company, LimitedInventors: Yoshiharu Fukui, Kazuhisa Kuroda, Tamaki Ishii, Manji Sasaki
-
Patent number: 4954542Abstract: Tetrahalophthalate esters are disclosed herein as flame retardant processing aids for polybutylene terephthalate (PBT) resins.Type: GrantFiled: March 25, 1988Date of Patent: September 4, 1990Assignee: Pennwalt CorporationInventors: Joseph M. Bohen, Ronald F. Lovenguth
-
Patent number: 4938894Abstract: Tetrahalophthalate esters are disclosed herein as flame retardant processing aids for ABS (acrylonitrile-butadienestyrene terpolymer) resins.Type: GrantFiled: October 30, 1987Date of Patent: July 3, 1990Assignee: Pennwalt CorporationInventors: Joseph M. Bohen, Ronald F. Lovenguth
-
Patent number: 4929658Abstract: This invention is concerned with a composition to be used as an agent for aligning liquid crystals in a liquid crystal cell, wherein liquid crystal molecules are aligned with an increased pretilt angle with respect to the substrate, such composition consists essentially of a polyimide resin precursor having repeating units represented by the formula (I) ##STR1## wherein R.sub.1 denotes an organic group constituting a tetracarboxylic acid or its derivative; and R.sub.2 represents a divalent organic group constituting a diamine; anda precursor of a diimide compound represented by the formula (II) or (III): ##STR2## wherein R.sub.3 denotes a divalent organic group constituting a diamine; each of R.sub.4 and R.sub.5 represents an organic groups constituting a dicarboxylic acid containing an alkyl group having 6 to 20 carbon atoms, or its derivative, ##STR3## wherein R.sub.6 denotes an organic group constituting a tetracarboxylic acid or its derivative, and each of R.sub.7 and R.sub.Type: GrantFiled: April 7, 1989Date of Patent: May 29, 1990Assignee: Nissan Chemical Industries Ltd.Inventors: Noriaki Kohtoh, Yoshihiro Tsuruoka, Toyohiko Abe, Hiroyoshi Fukuro
-
Patent number: 4923916Abstract: Tetrahalophthalate esters are disclosed herein as flame retardant processing aids for polystyrene resins.Type: GrantFiled: July 19, 1988Date of Patent: May 8, 1990Assignee: Pennwalt CorporationInventors: Joseph M. Bohen, Ronald F. Lovenguth
-
Patent number: 4920169Abstract: A compound of formula I ##STR1## in which each R.sub.1, independently is selected from hydrogen, C.sub.1-12 alkyl, C.sub.1-12 alkoxy and halogen;R.sub.2 has a significance of R.sub.1, independently of R.sub.1, or is --OH;R.sub.20 is --CO--OR.sub.6 or, when each R.sub.1 is hydrogen and R.sub.2 is 2-C.sub.1-4 alkoxy, R.sub.20 is additionally --OH;R.sub.3 is hydrogen or methyl (more preferably hydrogen); andR.sub.6 is hydrogen; unsubstituted C.sub.6-22 alkyl, uninterrupted or interrupted by 1 or 2 oxygen atoms or C.sub.1-22 alkyl mono- or di-substituted by OH and uninterrupted or interrupted by 1 or 2 oxygen atoms;provided when each RF.sub.1 and R.sub.2 is hydrogen, then R.sub.6 is not hydrogen.Type: GrantFiled: May 26, 1989Date of Patent: April 24, 1990Assignee: Sandoz Ltd.Inventor: Lajos Avar
-
Patent number: 4912249Abstract: Useful for the stabilization of polymers, especially polypropylene and polyethylene are esters of 3-tert-butyl or 3-tert-butyl-5-alkyl-4-hydroxyphenyl(alkane) carboxylic acids with oxethylates of bis-(4- or 2-hydroxyphenyl) alkanes, oxides, sulfides or sulfones, with oxethylates of tris-(4-hydroxyphenyl) alkanes, or with oxethylates of 1,3,5-tris-(4-hydroxyphenyl isopropylidene) aryls, the oxethylate preferably comprising a hydroxyethoxy group substituted for each hydroxyl group.Type: GrantFiled: November 18, 1987Date of Patent: March 27, 1990Assignee: Huels AktiengesellschaftInventors: Friedrich-Wilhelm Kupper, Heinz-Werner Voges, Werner Patzold, Richard Schaaf
-
Patent number: 4882366Abstract: Compounds having defined nitrogen containing functional groups are described which color stabilize aromatic carbonate polymers or blends therewith upon exposure to sterilizing radiation.Type: GrantFiled: December 22, 1987Date of Patent: November 21, 1989Assignee: General Electric CompanyInventors: Linda H. Nelson, Roger W. Avakian, Arnold Factor
-
Patent number: 4876299Abstract: A compound of formula I ##STR1## in which R, R.sub.1, R.sub.10 and R.sub.11 are organic radicals. These compounds are suitable as U.V. absorbers.Type: GrantFiled: April 1, 1987Date of Patent: October 24, 1989Assignee: Sandoz Ltd.Inventor: Lajos Avar
-
Patent number: 4859725Abstract: A compound of formula I ##STR1## in which R to R.sub.5 are organic radicals, for use as a light stabilizer in polymeric systems.Type: GrantFiled: August 23, 1988Date of Patent: August 22, 1989Assignee: Sandoz Ltd.Inventor: Lajos Avar