Two Or More C(c=o)c Groups Patents (Class 524/357)
  • Patent number: 4994323
    Abstract: Colored, high strength, high modulus p-aramid fibers are prepared by including an organic pigment which is soluble in but not degraded by concentrated sulfuric acid in a p-aramid spinning dope wherein the solvent is concentrated sulfuric acid and spinning the pigment containing dope through an air gap into a coagulation bath and washing and drying the resulting fibers. The dissolved pigment is precipitated by the coagulation bath as particles with a diameter of less than 0.50 microns.
    Type: Grant
    Filed: August 1, 1988
    Date of Patent: February 19, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Kiu-Seung Lee
  • Patent number: 4994517
    Abstract: An anticorrosion lacquer which can be used in the ink-jet process for coating metal cans and receptacle parts, especially, with viscosity and surface tension allowing the use of the dispenser nozzles of ink-jet printing machines. The low viscosity anticorrosion lacquer contains polyvinylalcohol acetal, epoxy resin based upon epichlorhydrin and diphenylolpropane and nonplastified methyl esterified melamineformaldehyde resin in a mixture of alcohols and aromatic hydrocarbons.
    Type: Grant
    Filed: June 8, 1989
    Date of Patent: February 19, 1991
    Assignee: Schmalbach-Lubeca AG
    Inventor: Klaus-Peter Vohrer
  • Patent number: 4992504
    Abstract: Composition containing a chlorine-containing polymer and at least one compound of the formula IA ##STR1## in which R.sup.1 and R.sup.3 independently of one another are C.sub.1 -C.sub.12 alkyl, phenyl, phenyl which is substituted by one to three C.sub.1 -C.sub.12 alkyl groups, C.sub.7 -C.sub.10 phenylalkyl or C.sub.7 -C.sub.10 phenylalkyl which is substituted on the phenyl ring by one to three C.sub.1 -C.sub.12 alkyl groups and R.sup.1 is additionally --R.sup.2 --X--R.sup.3, R.sup.2' is C.sub.1 -C.sub.10 alkylene, R.sup.4 is hydrogen, C.sub.2 -C.sub.5 alkoxycarbonyl or C.sub.2 -C.sub.5 alkanoyl and X is oxygen or sulfur.Compounds of the formula IA in which R.sup.
    Type: Grant
    Filed: January 5, 1990
    Date of Patent: February 12, 1991
    Assignee: Ciba-Geigy Corporation
    Inventors: Hermann O. Wirth, Hans-Helmut Friedrich
  • Patent number: 4990555
    Abstract: The specification discloses a method of preparing a polysiloxane by chain extension of a silicon compound having chain terminating units including a silicon-bonded hydroxyl group which comprises bringing about condensation of the silicon-bonded hydroxyl groups at a temperature of less than 50.degree. C. in presence of an acidic condensation catalyst of the formula RSO.sub.3 H and water, to an extent of less than 7 moles per mole of acidic condensation catalyst. The silicon compound may comprise a hydroxyl end-blocked polydimethylsiloxane having a viscosity at 25.degree. C. in the range 30 to 100,000 mm.sup.2 /s, and it may be polymerized to provide an .alpha.,.omega. dihydroxy polydimethylsiloxane having a viscosity in the range 1,000 mm.sup.2 /s to 100,000 mm.sup.2 /s or more. Preferred acidic condensation catalysts are those in which R is an alkyl group having a chain of 6 to 18 carbon atoms or a group R"C.sub.6 H.sub.
    Type: Grant
    Filed: January 18, 1990
    Date of Patent: February 5, 1991
    Assignee: Dow Corning S.A.
    Inventor: Brian R. Trego
  • Patent number: 4963429
    Abstract: Very thin polymer/MOC film, on the order of 500A to 1000A thick, is prepared by dissolving both the polymer and the MOC sequentially in the same solvent to obtain an emulsion consisting of a discontinuous phase of finite globules of the MOC solution dispersed in a continuous phase of the polymer solution, then partially evaporating the solvent from a layer of the emulsion, and finally subjecting the resultant polymer/MOC layer, while the solvent continues to evaporate, to a controlled treatment permitting attainment of a desired arrangement of the MOC phase in and throughout the film, depending on the specific film properties sought to be achieved, while the polymer crystallizes. The treatment may be a drawing operation or, if the metal component of the MOC is magnetic, the application of a magnetic field either parallel or perpendicular to the plane of the layer.
    Type: Grant
    Filed: December 29, 1988
    Date of Patent: October 16, 1990
    Assignee: Wea Manufacturing Inc.
    Inventors: Karl H. Norian, Ulrich Rieck
  • Patent number: 4954552
    Abstract: Linear alternating polymers of carbon monoxide and at least one ethylenically unsaturated hydrocarbon are provided melt stability by the inclusion therein of barium acetylacetonate or titanium acetylacetonate.
    Type: Grant
    Filed: May 15, 1989
    Date of Patent: September 4, 1990
    Assignee: Shell Oil Company
    Inventor: Edgar J. Smutny
  • Patent number: 4950705
    Abstract: Rubber compositions excellent in adhesion to metals, particularly suitable for steel cord coating rubbers, having a high vulcanizing rate and little offensive smell in an unvulcanized state, which comprise 100 parts by weight of a rubber and 0.01.about.1 part by weight as a cobalt element content of at least one cobalt oxyketone complex represented by the following general formula: ##STR1## wherein R.sub.1 .about.R.sub.4 are same or different C.sub.1.about.18 alkyl, C.sub.5.about.12 cycloalkyl, C.sub.6.about.14 aryl-C.sub.1.about.4 alkyl, C.sub.1.about.18 alkoxyl, C.sub.5.about.12 cycloalkoxyl, C.sub.6.about.14 aryloxyl, C.sub.6.about.14 aryl-C.sub.1.about.4 alkoxyl groups, or C.sub.2.about.18 hydrocarbon groups having at least one double bond.
    Type: Grant
    Filed: September 1, 1988
    Date of Patent: August 21, 1990
    Assignee: Bridgestone Corporation
    Inventors: Takeshi Kinoshita, Koichi Morita, Yoshiyuki Kumamoto
  • Patent number: 4950704
    Abstract: Motor vehicle components are provided having an improved stability at moderate temperatures and shaped from polyvinyl chloride resin compositions, comprising a polyvinyl chloride resin, at least one heat stabilizer in a sufficient amount to impart heat processing stability, and a .beta.-diketone in a sufficient amount to provide, after forming, stability at moderate temperatures not provided by any residual heat stabilizer, as well as polyvinyl chloride resin stabilizer compositions and polyvinyl chloride resin compositions containing such heat stabilizer compositions suitable for use in forming motor vehicle components, comprising at least one heat stabilizer and a .beta.-diketone.
    Type: Grant
    Filed: May 18, 1989
    Date of Patent: August 21, 1990
    Assignee: Argus Chemical Corporation
    Inventors: Michael A. Croce, Kook J. Bae, Stuart D. Brilliant
  • Patent number: 4939197
    Abstract: A composition for injection molding a ceramic powder to make ceramic shapes is described. The composition comprises a ceramic powder and a binder system. The binder system comprises a distilled thermosetting polycarbosilane containing from about 0.4 to about 0.7 weight percent of a cross-linking inhibitor, a surfactant, and with or without a lubricant. The cross-linking inhibitor is selected from the group consisting of p-benzoquinone, benzophenone, and mixtures thereof.
    Type: Grant
    Filed: October 3, 1988
    Date of Patent: July 3, 1990
    Assignee: GTE Laboratories Incorporated
    Inventor: Sophia R. Su
  • 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
  • Patent number: 4897307
    Abstract: The present invention relates to a process for the solvent-induced crystallization of amorphous poly(etheretherketone)-type polymer to produce an article, which process comprises:A. contacting a preformed article of a polymer comprising amorphous poly(etheretherketone)-type polymer with at least one organic compound in its liquid state which consists essentially of atoms of carbon and hydrogen, optionally with oxygen, nitrogen, sulfur, halogen or mixtures thereof having a molecular weight of between about 160 and 320 daltons at a temperature of between about 85.degree. C. and 145.degree. C. for a time effective to crystallize the poly(etheretherketone)-type polymer,B. removing the organic compound, andC. recovering the article comprising crystallized poly(etheretherketone)-type polymer. Poly(etheretherketone), poly(phenylenesulfide) or mixtures thereof are preferred polymer systems.
    Type: Grant
    Filed: August 11, 1987
    Date of Patent: January 30, 1990
    Assignee: The Dow Chemical Company
    Inventors: Henry N. Beck, Robert M. Nowak
  • Patent number: 4880853
    Abstract: Compounds havign defined ketone functional groups are described which color stabilize aromatic carbonate polymers or blends therewith upon exposure to sterilizing radiation.
    Type: Grant
    Filed: December 22, 1987
    Date of Patent: November 14, 1989
    Assignee: General Electric Company
    Inventors: Linda H. Nelson, Roger W. Avakian, Arnold Factor
  • Patent number: 4855348
    Abstract: A storage stable water-based paint comprising a solid silicone resin and an ammonium salt of a drying oil modified acrylic copolymer provide a coating for barbecue grills and other appliances that are subjected to temperatures as high as 1300.degree. F. A smooth and continuous coating remains on the metal after burning off of the acrylic resin and firing of the metal at 1300.degree. F. The paint is redispersible and may be drawn down to 1.5 mils after storage at 120.degree. F. for more than 3 months when the pH is at least about 8.
    Type: Grant
    Filed: July 14, 1988
    Date of Patent: August 8, 1989
    Assignee: DAP Inc.
    Inventor: Hartzel G. Strader
  • Patent number: 4847315
    Abstract: A water-soluble, thermosetting resin comprising units derived from tris(2-aminoethyl)amine, and preferably units derived from dicyandiamide and/or epichlorohydrin, is useful as an accelerator in paper sizing, e.g. using an alkyl ketene dimer.
    Type: Grant
    Filed: June 3, 1987
    Date of Patent: July 11, 1989
    Assignee: W. R. Grace AB
    Inventor: Thord G. G. Hassler
  • Patent number: 4824903
    Abstract: A heat-resistant silicone rubber is obtained from a composition of a vinyl-containing polyorganosiloxane, a hydrogenpolyorganosiloxane, a platinum-containing catalyst, carbon black, and an acetylacetone salt of a metal wherein the metal can be copper, zinc, aluminum, iron, cerium, zirconium, or titanium. The silicone rubber can maintain its rubber properties at temperatures of 350.degree. C. for prolonged periods of time.
    Type: Grant
    Filed: December 2, 1986
    Date of Patent: April 25, 1989
    Assignee: Dow Corning Kabushiki Kaisha
    Inventors: Koichi Aizawa, Shingo Sewa, Kiyoshi Mizushima, Minoru Emoto
  • Patent number: 4812492
    Abstract: Aqueous pigment preparations which contain (a) 5 to 80% by weight of a finely-divided inorganic and/or organic pigment, (b) 5 to 80% by weight of an aequeous polyurethane dispersion, (c) 2 to 80% by weight of water and (d) 0 to 50% by weight of an organic solvent.
    Type: Grant
    Filed: July 27, 1987
    Date of Patent: March 14, 1989
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Helmut Eckes, Rainer Winter, Albert Munkel
  • Patent number: 4751261
    Abstract: Magnesium oxide is incorporated into a polyvinyl chloride resin composition comprising a polyvinyl chloride, a hydrotalcite, a .beta.-diketone compound and an organic acid salt of zinc or a polyvinyl chloride resin composition comprising a polyvinyl chloride, a hydrotalcite and an organic tin compound. Bubbling as well as discoloration can be prevented in a molded article prepared from the polyvinyl chloride resin composition. Magnesium oxide having a specific surface area of at least 50 m.sup.2 /g and an average secondary particle size smaller than 5 .mu.m is preferably used.
    Type: Grant
    Filed: August 13, 1987
    Date of Patent: June 14, 1988
    Assignee: Kyowa Chemical Industry Co., Ltd.
    Inventors: Shigeo Miyata, Tsutomu Nosu
  • Patent number: 4683251
    Abstract: Room temperature-curable organopolysiloxane compositions are made from essentially linear organopolysiloxanes having hydroxyl or hydrolyzable end groups, a crosslinking agent, a filler, optionally a curing catalyst, an unsaturated ester having at least ten carbon atoms in the unsaturated fatty acid component of the ester, and a photosensitizer. These compositions cure to elastomeric materials which do not soil on the surface or the surrounding areas of the substrate in contact with the cure product. The adhesion of these cured products is not reduced.
    Type: Grant
    Filed: June 20, 1986
    Date of Patent: July 28, 1987
    Assignee: Toray Silicone Co., Ltd.
    Inventor: Ryuzo Mikami
  • Patent number: 4657956
    Abstract: Additives for rubber compositions, giving vulcanizates having improved retention of optimum physical properties, are compounds having the formula R--S--B--S--R where B is an organic bridging group and R is an electron-withdrawing group, for example CN, CCl.sub.3, a radical containing an activated methylene group linked to the sulphur atom or the enolic tautomer of a keto-activated methylene group. Also useful as stabilizing agents are oligomeric analogues of such compounds.
    Type: Grant
    Filed: September 13, 1985
    Date of Patent: April 14, 1987
    Assignee: Monsanto Europe, S. A.
    Inventors: Albert F. L. G. Devaux, Philippe G. Moniotte
  • Patent number: 4622344
    Abstract: There is disclosed novel copper ion-exchange media and processes for the recovery of cupric ion from ammoniacal copper solutions and for the recovery of spent printed circuit board etchant. The novel ion-exchange media comprise hydrophobic nonporous polymer plasticized and swollen with a monomeric organic liquid copper ion-exchange agent such as beta-diketones or hydroxyoximes. A novel copper ion-complexing agent, 1-n-octylphenyl-p-1,3-butanedione, is also disclosed. The processes essentially comprise contacting the ammoniacal cupric ion-containing solution or spent etchant with the novel copper ion-exchange media to extract copper in cupric ion form. Copper can be recovered therefrom by conventional methods such as acid stripping and electrowinning.
    Type: Grant
    Filed: March 5, 1984
    Date of Patent: November 11, 1986
    Assignee: Bend Research, Inc.
    Inventors: Walter C. Babcock, Mark E. Tuttle, James W. Brooke
  • Patent number: 4612339
    Abstract: The polyamide polymers, notably the nylons, are effectively heat stabilized, characteristically with good retention of mechanical properties, by formulating therewith stabilizing amounts of (i) at least one lanthanide or yttrium-based compound and (ii) at least one ammonium, or alkali or alkaline earth metal halide.
    Type: Grant
    Filed: March 8, 1985
    Date of Patent: September 16, 1986
    Assignee: Rhone-Poulenc Specialites Chimiques
    Inventor: Bruno Giroud-Abel
  • Patent number: 4595721
    Abstract: Additives for rubber compositions, giving vulcanizates having improved retention of optimum physical properties, are compounds having the formula R-S-B-S-R where B is an organic bridging group and R is an electron-withdrawing group, for example CN, CCl.sub.3, a radical containing an activated methylene group linked to the sulphur atom or the enolic tautomer of a keto-activated methylene group. Also useful as stabilizing agents are oligomeric analogues of such compounds.
    Type: Grant
    Filed: June 4, 1984
    Date of Patent: June 17, 1986
    Assignee: Monsanto Europe, S.A.
    Inventors: Albert F. L. G. Devaux, Philippe G. Moniotte
  • Patent number: 4590233
    Abstract: In a stabilized polyvinyl chloride molding mixture containing a stabilizer combination based upon alkali metal, alkaline earth metal, and/or zinc soaps, co-stabilizers, powdered, crystalline, hydrous aluminosilicate, and flow promoters, as well as optionally additional conventional additives, the improvement which comprises, per 100 parts by weight of polyvinyl chloride,(a) from about 0.2 to 5 parts by weight of a synthetic, crystalline, powdered alkali metal aluminosilicate containing from about 13 to 25 percent by weight of water of crystallization; and(b) from about 0.1 to 5 parts by weight of at least one co-stabilizer selected from the group consisting of .beta.-diketones, .alpha.-ketoenol esters, .alpha.-acyllactones, substituted 1,4-dihydropyridine-3,5-dicarboxylic acids, and pyrrole, the pyrrole being unsubstituted or substituted.
    Type: Grant
    Filed: December 14, 1984
    Date of Patent: May 20, 1986
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Werner Erwied, Bernd Wegemund, Peter Wedl, Kurt Worschech
  • Patent number: 4562219
    Abstract: A coating system especially useful on transparent plastic substrates is provided which includes: (1) an initial primer coat of polymethylmethacrylate in a solution of ethylene glycol monoethyl ether and diacetone alcohol, containing a small amount of an ultraviolet light absorbing compound, or a combination of an ultraviolet light absorbing compound and an ultraviolet radiation stabilizing agent, and (2) a secondary coat of a silicon resin coating composition. Such a coating system has a longer service life and improved resistance to delamination and discoloring compared to silicone resin coatings used with unmodified primers or coatings where ultraviolet light absorbers are added to the resin component only. Moreover, modification of the primer according to the invention will not significantly decrease the desirable adhesion properties, abrasion-resistance and optical clarity of silicone resin coating compositions.
    Type: Grant
    Filed: July 27, 1984
    Date of Patent: December 31, 1985
    Assignee: General Electric Company
    Inventor: Robert B. Frye
  • Patent number: 4559372
    Abstract: The polyamides are fireproofed and, e.g., phosphine-inhibited, by formulating red phosphorus and at least one lanthanide or yttrium compound therewith.
    Type: Grant
    Filed: October 22, 1984
    Date of Patent: December 17, 1985
    Assignee: Rhone-Poulenc Specialities Chimiques
    Inventor: Bruno Giroud-Abel
  • Patent number: 4549594
    Abstract: A composition comprising at least one sulfur-vulcanizable rubber, this composition being intended to adhere to at least one metallic surface during the course of vulcanization, is characterized by the fact that it further comprises from 0.1 to 2 parts by weight of nickel, present in the form of nickel (II) acetylacetonate, per 100 parts by weight of rubber.
    Type: Grant
    Filed: April 18, 1984
    Date of Patent: October 29, 1985
    Assignee: Compagnie Generale des Etablissements Michelin
    Inventors: Christian Ancel, Pierre Philibert
  • Patent number: 4530940
    Abstract: Stabilized melamine resin foams contain, as a stabilizer, a copper or iron compound in an amount corresponding to from 10 ppm to 3%, based on the weight of the melamine resin, of Cu or Fe, preferably an oxide, hydroxide or carbonate of copper.
    Type: Grant
    Filed: June 28, 1984
    Date of Patent: July 23, 1985
    Assignee: BASF Aktiengesellschaft
    Inventors: Frank P. Woerner, Horst Reimann, Harald Mahnke, Peter Neumann, Gerhard Turznik, Hanshelmut Kaeppel
  • Patent number: 4525504
    Abstract: Disclosed are stabilized polyester compositions having significantly improved weatherability, said polyesters consisting of homopolyesters derived from a dicarboxylic acid component wherein at least a major portion of which is 1,4-cyclohexanedicarboxylic acid (or ester) having a trans isomer content of at least 65% and a glycol component wherein at least a major portion of which is 2,2,4,4-tetramethyl-1,3-cyclobutanediol and copolyesters thereof with modifying aliphatic glycols and/or aliphatic dicarboxylic acids, said polyesters being stabilized with the combination of at least one ultraviolet light stabilizing compound compatible with said polyester and at least one hindered amine light stabilizer having the formulae ##STR1## the groups shown as R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each independently selected from various substituents.
    Type: Grant
    Filed: October 24, 1983
    Date of Patent: June 25, 1985
    Assignee: Eastman Kodak Company
    Inventors: John C. Morris, Joseph S. Zannucci
  • Patent number: 4513110
    Abstract: Treatment of diene rubber with a diketo compound, in which the keto groups are part of a six-carbon hydrocarbon ring containing carbon-to-carbon unsaturation, or a tautomer of the compound, is performed at temperatures above 130.degree. C. Rubber compositions treated in this manner exhibit increased green strength, decreased plasticity, and, when vulcanized, decreased hysteresis.
    Type: Grant
    Filed: June 9, 1983
    Date of Patent: April 23, 1985
    Assignee: Monsanto Company
    Inventor: Charles P. Rader
  • Patent number: 4507419
    Abstract: Contact adhesives based on polyurethane rubber, in which the rubber solution is combined with 2.5 to 100% by weight, based on the solid rubber, of a phenolate of titanium, zirconium and/or preferably aluminum and optionally hydroxyl group-containing compounds, and their use for bonding organic or inorganic material such as leather, polyvinyl chloride, rubber, textiles, polyurethane or glass.
    Type: Grant
    Filed: October 28, 1983
    Date of Patent: March 26, 1985
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Wolfgang Hesse, Richard Sattelmeyer, Erich Schunck
  • Patent number: 4506052
    Abstract: A one component room temperature setting composition having an excellent storage stability comprising a hydrolyzable silyl group-containing vinyl polymer, a hardener and a stabilizer selected from a hydrolyzable ester compound and a .beta.-diketone compound, which may further contain a pigment and a solvent. The storage stability of the composition containing the hydrolyzable silyl group-containing vinyl polymer which is crosslinkable in the presence of water to harden at room temperature, can be remarkably improved by the presence of the above stabilizer.
    Type: Grant
    Filed: February 29, 1984
    Date of Patent: March 19, 1985
    Assignee: Kanegafuchi Kagaku Kogyo Kabushiki Kaisha
    Inventors: Hisao Furukawa, Yasushi Kato
  • Patent number: 4490282
    Abstract: A conductive paint composition is disclosed comprising a hardenable fluid binder, metal particles selected from the group of nickel particles, aluminum particles and mixtures thereof, carbon particles, 2,4-pentanedione and a tintinate coupling agent. Nickel particles are the preferred metal particles. Solid particles comprise from about 20% to about 80% by weight of the composition. The weight ratio of metal particles to carbon particles is preferably from about 3:1 to about 15:1.
    Type: Grant
    Filed: February 18, 1983
    Date of Patent: December 25, 1984
    Inventors: Thomas A. Corboy, Joseph Philipson
  • Patent number: 4483951
    Abstract: This disclosure relates to novel adhesive compositions and composite structures utilizing the same, wherein said adhesive compositions contain an elastomer, a chemically compatible ethylenically unsaturated monomer, a tackifier, an adhesion promoter, and optionally, pigments, fillers, thickeners and flow control agents which are converted from the liquid to the solid state by exposure to high energy ionizing radiation such as electron beam. A particularly useful application for such adhesive compositions comprises the assembly of certain composite structures or laminates consisting of, for example, a fiber flocked rubber sheet and a metal base with the adhesive fulfilling the multiple functions of adhering the flocked fiber to the rubber sheet as well as adhering the rubber sheet to the metal base.
    Type: Grant
    Filed: December 2, 1981
    Date of Patent: November 20, 1984
    Assignee: The Standard Products Company
    Inventor: Walter Brenner
  • Patent number: 4451602
    Abstract: A one component room temperature setting composition having an excellent storage stability comprising a hydrolyzable silyl group-containing vinyl polymer, a hardener and a stabilizer selected from a hydrolyzable ester compound and a .beta.-diketone compound, which may further contain a pigment and a solvent. The storage stability of the composition containing the hydrolyzable silyl group-containing vinyl polymer which is crosslinkable in the presence of water to harden at room temperature, can be remarkably improved by the presence of the above stabilizer.
    Type: Grant
    Filed: July 27, 1982
    Date of Patent: May 29, 1984
    Assignee: Kanegafuchi Kagaku Kogyo Kabushiki Kaisha
    Inventors: Hisao Furukawa, Yasushi Kato
  • Patent number: 4427816
    Abstract: Stabilizer compositions for halogen-containing polymers are provided composed of a .beta.-diketone as well as metal and organotin enolate salts thereof; and a hydrotalcite having the general formula:Mg.sub.1-x Al.sub.x (OH).sub.2 A.sub.x/2.mH.sub.2 Owhereinx is a number from 0 to 0.5;A is CO.sub.3.sup.= or SO.sub.4.sup.=, andm is a number representing the number of H.sub.2 O in the molecule.The stabilizer compositions are effective in enhancing the resistance to deterioration by heat and light of halogen-containing polymers and especially polyvinyl halide resins. The .beta.-diketone and hydrotalcite in these compositions exhibit a synergistic stabilizing effectiveness superior to either alone in like amount.
    Type: Grant
    Filed: January 29, 1982
    Date of Patent: January 24, 1984
    Assignee: Adeka Argus Chemical Co., Ltd.
    Inventors: Toshihiro Aoki, Yoshio Iida
  • Patent number: 4421889
    Abstract: Dispersion paints with high wet adhesion are obtained if, as the binder thereof, an aqueous plastics dispersion is used, the polymer content of which includes monomeric units of an acetoacetic acid ester of an unsaturated alcohol, especially vinyl or allyl alcohol or a diester of a dihydroxy compound in which one acyl radical is acetoacetyl and the other acyl radical is an acrylic or methacrylic radical. The preparation of paints with a low pigment content is especially facilitated by the use of such a dispersion.
    Type: Grant
    Filed: May 13, 1983
    Date of Patent: December 20, 1983
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Helmut Braun, Helmut Rinno, Werner Stelzel
  • Patent number: 4408002
    Abstract: The gelling of zinc-containing iminated acrylate coating compositions is prevented by including an effective chelating amount of 2,4-pentanedione in the composition.
    Type: Grant
    Filed: April 30, 1982
    Date of Patent: October 4, 1983
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Paul E. Wills
  • Patent number: 4376839
    Abstract: A heat-stable, polymer-forming composition of a polymerizable material, a transition metal compound, a polymer chain terminator, and, optionally, a preventive antioxidant is disclosed as well as particular uses of such composition.
    Type: Grant
    Filed: January 21, 1980
    Date of Patent: March 15, 1983
    Assignee: Technicon Instruments Corporation
    Inventor: Miachael J. Malin
  • Patent number: 4371651
    Abstract: Stabilizer compositions and polyvinyl halide resin compositions containing 1,3-dicarbonyl compounds having the formula: ##STR1## as well as metal and organotin enolate salts thereof, effective in enhancing the resistance to deterioration by heat and light of polyvinyl halide resins.
    Type: Grant
    Filed: January 21, 1981
    Date of Patent: February 1, 1983
    Assignee: Phoenix Chemical Corporation
    Inventors: William E. Leistner, Motonobu Minagawa, Kouji Tsuruga, Masashi Harada
  • Patent number: 4368313
    Abstract: A method for stabilizing silanol hydrolysates of organosilanes in an acid medium is described. The method comprises adding a neutralizing agent containing a chelatable metal ion to the silanol hydrolysate in an acid medium to reduce the acidity of the medium; removing solids from the medium; and adding a chelating agent to form a chelate with metal in the medium. In a preferred embodiment, methyltrimethoxysilane is hydrolyzed with an excess of slightly acidic water; calcium carbonate neutralizing agent is added thereto to reduce the acidity of the medium; excess calcium carbonate and other solids in the medium are removed by filtration; and acetylacetone is added as a chelating agent to form a chelate or to interact with the calcium from the calcium carbonate neutralizing agent in the medium. The process of this invention stops haze formation in the products formed by the process of the invention and substantially extends the shelf life of silanol hydrolysates of organolsilanes.
    Type: Grant
    Filed: September 18, 1981
    Date of Patent: January 11, 1983
    Assignee: General Electric Company
    Inventor: Susan E. Hayes
  • Patent number: 4352905
    Abstract: Normally intractable polymers of the structure: ##STR1## wherein X is O or NH, provided at least one X is O, such as poly(parabanic acids) are made extrudable by composition with from 10 to 60 weight percent of diaryl ketone.
    Type: Grant
    Filed: October 26, 1981
    Date of Patent: October 5, 1982
    Assignee: Exxon Research & Engineering Co.
    Inventor: Tad L. Patton
  • Patent number: 4336323
    Abstract: A light insensitive imageable layer comprising a synthetic polymeric binder, a dye, a nitrate salt, and an acid.
    Type: Grant
    Filed: October 22, 1980
    Date of Patent: June 22, 1982
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: John M. Winslow