Two Or More C(c=o)c Groups Patents (Class 524/357)
-
Patent number: 4994323Abstract: 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: GrantFiled: August 1, 1988Date of Patent: February 19, 1991Assignee: E. I. Du Pont de Nemours and CompanyInventor: Kiu-Seung Lee
-
Patent number: 4994517Abstract: 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: GrantFiled: June 8, 1989Date of Patent: February 19, 1991Assignee: Schmalbach-Lubeca AGInventor: Klaus-Peter Vohrer
-
Patent number: 4992504Abstract: 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: GrantFiled: January 5, 1990Date of Patent: February 12, 1991Assignee: Ciba-Geigy CorporationInventors: Hermann O. Wirth, Hans-Helmut Friedrich
-
Patent number: 4990555Abstract: 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: GrantFiled: January 18, 1990Date of Patent: February 5, 1991Assignee: Dow Corning S.A.Inventor: Brian R. Trego
-
Patent number: 4963429Abstract: 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: GrantFiled: December 29, 1988Date of Patent: October 16, 1990Assignee: Wea Manufacturing Inc.Inventors: Karl H. Norian, Ulrich Rieck
-
Patent number: 4954552Abstract: 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: GrantFiled: May 15, 1989Date of Patent: September 4, 1990Assignee: Shell Oil CompanyInventor: Edgar J. Smutny
-
Patent number: 4950705Abstract: 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: GrantFiled: September 1, 1988Date of Patent: August 21, 1990Assignee: Bridgestone CorporationInventors: Takeshi Kinoshita, Koichi Morita, Yoshiyuki Kumamoto
-
Patent number: 4950704Abstract: 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: GrantFiled: May 18, 1989Date of Patent: August 21, 1990Assignee: Argus Chemical CorporationInventors: Michael A. Croce, Kook J. Bae, Stuart D. Brilliant
-
Patent number: 4939197Abstract: 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: GrantFiled: October 3, 1988Date of Patent: July 3, 1990Assignee: GTE Laboratories IncorporatedInventor: Sophia R. Su
-
Patent number: 4929652Abstract: 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: GrantFiled: April 27, 1988Date of Patent: May 29, 1990Assignee: Ciba-Geigy CorporationInventor: Francois Gugumus
-
Patent number: 4897307Abstract: 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: GrantFiled: August 11, 1987Date of Patent: January 30, 1990Assignee: The Dow Chemical CompanyInventors: Henry N. Beck, Robert M. Nowak
-
Patent number: 4880853Abstract: Compounds havign defined ketone 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 14, 1989Assignee: General Electric CompanyInventors: Linda H. Nelson, Roger W. Avakian, Arnold Factor
-
Patent number: 4855348Abstract: 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: GrantFiled: July 14, 1988Date of Patent: August 8, 1989Assignee: DAP Inc.Inventor: Hartzel G. Strader
-
Patent number: 4847315Abstract: 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: GrantFiled: June 3, 1987Date of Patent: July 11, 1989Assignee: W. R. Grace ABInventor: Thord G. G. Hassler
-
Patent number: 4824903Abstract: 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: GrantFiled: December 2, 1986Date of Patent: April 25, 1989Assignee: Dow Corning Kabushiki KaishaInventors: Koichi Aizawa, Shingo Sewa, Kiyoshi Mizushima, Minoru Emoto
-
Patent number: 4812492Abstract: 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: GrantFiled: July 27, 1987Date of Patent: March 14, 1989Assignee: Hoechst AktiengesellschaftInventors: Helmut Eckes, Rainer Winter, Albert Munkel
-
Patent number: 4751261Abstract: 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: GrantFiled: August 13, 1987Date of Patent: June 14, 1988Assignee: Kyowa Chemical Industry Co., Ltd.Inventors: Shigeo Miyata, Tsutomu Nosu
-
Patent number: 4683251Abstract: 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: GrantFiled: June 20, 1986Date of Patent: July 28, 1987Assignee: Toray Silicone Co., Ltd.Inventor: Ryuzo Mikami
-
Patent number: 4657956Abstract: 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: GrantFiled: September 13, 1985Date of Patent: April 14, 1987Assignee: Monsanto Europe, S. A.Inventors: Albert F. L. G. Devaux, Philippe G. Moniotte
-
Patent number: 4622344Abstract: 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: GrantFiled: March 5, 1984Date of Patent: November 11, 1986Assignee: Bend Research, Inc.Inventors: Walter C. Babcock, Mark E. Tuttle, James W. Brooke
-
Patent number: 4612339Abstract: 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: GrantFiled: March 8, 1985Date of Patent: September 16, 1986Assignee: Rhone-Poulenc Specialites ChimiquesInventor: Bruno Giroud-Abel
-
Patent number: 4595721Abstract: 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: GrantFiled: June 4, 1984Date of Patent: June 17, 1986Assignee: Monsanto Europe, S.A.Inventors: Albert F. L. G. Devaux, Philippe G. Moniotte
-
Patent number: 4590233Abstract: 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: GrantFiled: December 14, 1984Date of Patent: May 20, 1986Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Werner Erwied, Bernd Wegemund, Peter Wedl, Kurt Worschech
-
Patent number: 4562219Abstract: 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: GrantFiled: July 27, 1984Date of Patent: December 31, 1985Assignee: General Electric CompanyInventor: Robert B. Frye
-
Patent number: 4559372Abstract: The polyamides are fireproofed and, e.g., phosphine-inhibited, by formulating red phosphorus and at least one lanthanide or yttrium compound therewith.Type: GrantFiled: October 22, 1984Date of Patent: December 17, 1985Assignee: Rhone-Poulenc Specialities ChimiquesInventor: Bruno Giroud-Abel
-
Patent number: 4549594Abstract: 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: GrantFiled: April 18, 1984Date of Patent: October 29, 1985Assignee: Compagnie Generale des Etablissements MichelinInventors: Christian Ancel, Pierre Philibert
-
Patent number: 4530940Abstract: 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: GrantFiled: June 28, 1984Date of Patent: July 23, 1985Assignee: BASF AktiengesellschaftInventors: Frank P. Woerner, Horst Reimann, Harald Mahnke, Peter Neumann, Gerhard Turznik, Hanshelmut Kaeppel
-
Patent number: 4525504Abstract: 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: GrantFiled: October 24, 1983Date of Patent: June 25, 1985Assignee: Eastman Kodak CompanyInventors: John C. Morris, Joseph S. Zannucci
-
Patent number: 4513110Abstract: 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: GrantFiled: June 9, 1983Date of Patent: April 23, 1985Assignee: Monsanto CompanyInventor: Charles P. Rader
-
Patent number: 4507419Abstract: 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: GrantFiled: October 28, 1983Date of Patent: March 26, 1985Assignee: Hoechst AktiengesellschaftInventors: Wolfgang Hesse, Richard Sattelmeyer, Erich Schunck
-
Patent number: 4506052Abstract: 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: GrantFiled: February 29, 1984Date of Patent: March 19, 1985Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Hisao Furukawa, Yasushi Kato
-
Patent number: 4490282Abstract: 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: GrantFiled: February 18, 1983Date of Patent: December 25, 1984Inventors: Thomas A. Corboy, Joseph Philipson
-
Patent number: 4483951Abstract: 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: GrantFiled: December 2, 1981Date of Patent: November 20, 1984Assignee: The Standard Products CompanyInventor: Walter Brenner
-
Patent number: 4451602Abstract: 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: GrantFiled: July 27, 1982Date of Patent: May 29, 1984Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Hisao Furukawa, Yasushi Kato
-
Patent number: 4427816Abstract: 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: GrantFiled: January 29, 1982Date of Patent: January 24, 1984Assignee: Adeka Argus Chemical Co., Ltd.Inventors: Toshihiro Aoki, Yoshio Iida
-
Patent number: 4421889Abstract: 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: GrantFiled: May 13, 1983Date of Patent: December 20, 1983Assignee: Hoechst AktiengesellschaftInventors: Helmut Braun, Helmut Rinno, Werner Stelzel
-
Patent number: 4408002Abstract: 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: GrantFiled: April 30, 1982Date of Patent: October 4, 1983Assignee: E. I. Du Pont de Nemours and CompanyInventor: Paul E. Wills
-
Patent number: 4376839Abstract: 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: GrantFiled: January 21, 1980Date of Patent: March 15, 1983Assignee: Technicon Instruments CorporationInventor: Miachael J. Malin
-
Patent number: 4371651Abstract: 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: GrantFiled: January 21, 1981Date of Patent: February 1, 1983Assignee: Phoenix Chemical CorporationInventors: William E. Leistner, Motonobu Minagawa, Kouji Tsuruga, Masashi Harada
-
Patent number: 4368313Abstract: 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: GrantFiled: September 18, 1981Date of Patent: January 11, 1983Assignee: General Electric CompanyInventor: Susan E. Hayes
-
Patent number: 4352905Abstract: 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: GrantFiled: October 26, 1981Date of Patent: October 5, 1982Assignee: Exxon Research & Engineering Co.Inventor: Tad L. Patton
-
Patent number: 4336323Abstract: A light insensitive imageable layer comprising a synthetic polymeric binder, a dye, a nitrate salt, and an acid.Type: GrantFiled: October 22, 1980Date of Patent: June 22, 1982Assignee: Minnesota Mining and Manufacturing CompanyInventor: John M. Winslow