Oh Group Other Than As Part Of A Cooh Group, E.g., Salicylic Acid, Etc. Patents (Class 524/291)
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Patent number: 4859731Abstract: Polymer dihydroxy compounds corresponding to the following formula ##STR1## in whichR.sup.1, R.sup.2, R.sup.3 =H or C.sub.1 -C.sub.4 alkyl,R.sup.4 =H or C.sub.1 -C.sub.4 alkyl,R.sup.5 =--C.sub.6 H.sub.5, --C.sub.6 H.sub.4 CH.sub.3, --CH.dbd.CH.sub.2, or --CO.sub.2 R.sup.7,R.sup.6 =C.sub.1 -C.sub.4 alkyl, aryl, or H,R.sup.7 =C.sub.1 -C.sub.4 alkyl,m=0 or 1,n=5 to 100,q=0 or 1,a process for their production and their use in thermoplastic molding compositions.Type: GrantFiled: July 25, 1988Date of Patent: August 22, 1989Assignee: Bayer AktiengesellschaftInventors: Herbert Eichenauer, Hartwig Hocker, Thomas Heitz
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Patent number: 4857573Abstract: Plastic material compositions which comprise a plastic material matrix containing a benzhydrol-tetracarboxylic acid tetraester as a plasticizer are disclosed. The plasticizer is firmly anchored within the matrix such that migration of the plasticizer, and any other optionally present matrix components having a molecular weight of at least 100, are inhibited within the matrix. The plasticizer and matrix components are inhibited from eluting from the matrix when the matrix is brought in intimate contact with a liquid or solid material. These compositions are particularly useful as shaped bodies possessing highly elastic and adhesive characteristics.Type: GrantFiled: October 6, 1987Date of Patent: August 15, 1989Assignee: Firma Willi MollerInventors: Wilhelm Simon, Urs Oesch
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Patent number: 4851462Abstract: A solvent based contact adhesive suitable for bonding cured EPDM membranes is disclosed. The adhesive includes a crosslinked halogenated butyl rubber, a low molecular weight, high softening point, thermoplastic aliphatic-type-based hydrocarbon resin and at least one organic solvent employed as a dispersion medium for the crosslinked halogenated butyl rubber and the resin. The disclosed adhesive exhibits superior heat aging and hot water immersion properties which are significant characteristics in roof applications.Type: GrantFiled: January 21, 1988Date of Patent: July 25, 1989Assignee: Uniroyal Plastics Company, Inc.Inventors: Chester T. Chmiel, David A. Young
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Patent number: 4845142Abstract: Optical devices such as optical disk substrates and lenses are prepared by molding a resin composition comprising 100 parts by weight of a mixture of 30 to 70% by weight of a polymer in which 50% by weight or more is composed of aromatic vinyl monomer units and 70 to 30% by weight of a polyphenylene ether, and 0.005 to 2 parts by weight of an organic carboxylic acid.Type: GrantFiled: June 13, 1988Date of Patent: July 4, 1989Assignee: Sumitomo Chemical Company, LimitedInventors: Masahiro Niwano, Kenji Manabe
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Patent number: 4837400Abstract: Polyoxymethylene molding materials having improved heat stability and consisting of(A) one or more polyoxymethylene homopolymers and/or copolymers and(B) one or more antioxidants having a sterically hindered phenolic structure,(C) with or without additives, contain(D) as an additive, one or more alkaline earth metal silicates and/or alkaline earth metal glycerophosphates, advantageously in an amount of from 0.002 to 2.0% by weight, based on the weight of component (A),for improving the heat stability, reducing the tendency to discoloration and minimizing the free formaldehyde content.To prepare the novel polyoxymethylene molding materials, the components are advantageously melted in an extruder at from 150.degree. to 260.degree. C.The polyoxymethylene molding materials are useful for the production of films or, preferably, moldings, which are used, for example, in the automotive, electrical appliances and electronics industries.Type: GrantFiled: February 4, 1988Date of Patent: June 6, 1989Assignee: BASF AktiengesellschaftInventors: Manfred Walter, Wilhelm Schuette, Heiner Goerrissen
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Patent number: 4837259Abstract: Polypropylene are stabilized against oxidative degradation by the presence therein of a stabilizing amount of an antioxidant composition which comprises:(a) at least one aralkyl-substituted diarylamine and;(b) at least one sterically hindered phenol.Type: GrantFiled: September 16, 1988Date of Patent: June 6, 1989Assignee: Uniroyal Chemical Company, Inc.Inventor: Thomas M. Chucta
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Patent number: 4835200Abstract: A hot melt adhesive composition possessing color stability and resistance to heat degradation, oxidation and skin formation. The adhesive composition contains a block copolymer prepared using a bromide based coupling agent, a tackifying resin, and an effective amount of a stabilizer composition. The stabilizer composition contains a thio compound, a phenolic antioxidant, a tris-(nonylated phenyl) phosphite, and an aliphatic compatible epoxy compound. Optionally, the adhesive composition may also contain a plasticizer and/or a petroleum derived wax.Type: GrantFiled: December 19, 1986Date of Patent: May 30, 1989Assignee: Shell Oil CompanyInventor: David J. St. Clair
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Patent number: 4835204Abstract: A plasto-elastomeric composition is described comprising thermoplastic olefinic resins and EPDM elastomers wherein the elastomeric phase is fully or partially crosslinked by means of an aromatic carboxylic acid and a non-halogenated phenolic resin.Type: GrantFiled: May 20, 1988Date of Patent: May 30, 1989Assignee: SO.F.TER. S.p.A.Inventor: Italo Carfagnini
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Patent number: 4829110Abstract: Stabilized compositions based on alpha-olefin polymers stabilized against degradation by oxidizing liquids, based on polymers of alpha-olefins such as propylene, containing a phenolic antioxidant, a phosphonite and a sulphur-containing stabilizer chosen from the esters derived from aliphatic polyols and alkylthiodipropionic acids and from combinations of a metal sulfide with one of these esters or with an organic polysulfide and optionally also containing an organic phosphite and an anti-acid agent. These compositions exhibit outstanding resistance to the phenomenon of oxidative degradation produced particularly by the contact with hot washing products of all kinds.Type: GrantFiled: November 18, 1986Date of Patent: May 9, 1989Assignee: Solvay & Cie (Societe Anonyme)Inventors: Roger Van Asbroeck, Serge Blanc
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Patent number: 4829111Abstract: A stabilizer composition for synthetic resin is described comprising a piperazine derivative represented by the following formula (I): ##STR1## wherein R.sub.1 and R.sub.2 each represents an alkyl group having from 12 to 20 carbon atoms or a 2,2,6,6-tetramethyl-4-piperidyl group; R.sub.3 and R.sub.4 each represents a hydrogen atom or a methyl group; and n and m each represents 2 or 3.A synthetic resin composition is also described comprising polyolefin and the aforesaid piperazine derivative.Type: GrantFiled: February 2, 1988Date of Patent: May 9, 1989Assignee: Mitsubishi Petrochemical Co., Ltd.Inventors: Kazuyuki Iida, Hiroyuki Omori, Akiyoshi Oonishi, Masami Takahashi
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Patent number: 4826903Abstract: Composition useful for molding into articles such as food containers, beverage bottles, cured structural plastics and the like comprising molding grade linear or unsaturated polyester or polycarbonate (a) containing a mono-4-acryloxystyryl or bis-4-acyloxystyryl compound or (b) having reacted therewith or copolymerized therein a styryl residue derived from a mono-4-acryloxystyryl or bis-4-acyloxystyryl compound, having the formula ##STR1## wherein R.sup.4 and R.sup.5 represent the acyl radical and the other radicals are as defined in the specification.Preferred compositions comprise a linear polyester containing a styryl residue as an integral part of the polymer chain. The styryl residues absorb ultraviolet radiation in the range of about 250 to about 390 nm. The residues are non-extractable from the polymer and stable at the conditions at which the polymers are manufactured and processed.Type: GrantFiled: February 22, 1988Date of Patent: May 2, 1989Assignee: Eastman Kodak CompanyInventors: Max A. Weaver, Samuel D. Hilbert, Wayne P. Pruett, Clarence A. Coates, Jr.
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Patent number: 4824892Abstract: Benzophenone derivatives having at least one hydroxyl group in the ortho-position relative to the carbonyl group are used for stabilizing numerous substrates against the action of UV light. 1,3-bis-(4-Benzoyl-3-hydroxyphenoxy)-2-propanol is a photo-absorber containing two benzophenone groups. Particularly suitable stabilizers are esters of this substituted propanol with unsaturated carboxylic acids, for example esters of acrylic acid and methacrylic acid. These compounds are prepared by esterifying the substituted propanol with an unsaturated acid or by esterifying the substituted propanol with a saturated acid containing a reactive methylene group and subjecting the product to subsequent condensation with a keto compound. They can be polymerized and are suitable for the preparation of homopolymers and copolymers.Type: GrantFiled: December 15, 1987Date of Patent: April 25, 1989Assignee: Riedel-de Haen AktiengesellschaftInventors: Kurt Eiglmeier, Joachim Schulz
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Patent number: 4824889Abstract: A hot melt adhesive comprising a blend of:from about 10% by weight to about 90% by weight of a blend of from 10% by weight to 90% by weight of an at least partially crystalline copolymer of butene-1 and ethylene, wherein the ethylene content is from about 1 mole percent to about 20 mole percent of said copolymer, and from 10% by weight to 90% by weight of a butene-1 homopolymer;from about 10% by weight to about 90% by weight of a tackifying resin; andfrom about 0.1 phr to about 0.5 phr of an antioxidizing agent.Type: GrantFiled: October 30, 1987Date of Patent: April 25, 1989Assignee: Shell Oil CompanyInventor: Simon Mostert
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Patent number: 4822839Abstract: A polyunsaturated hydrocarbon polymer-compatible anti-oxidant composition is provided which comprises a mixture of at least one sterically hindered phenolic compound and at least one aryl amine compound in a molar ratio ranging from about 0.1 to about 10.Type: GrantFiled: November 25, 1987Date of Patent: April 18, 1989Assignee: Hercules IncorporatedInventor: Martin J. Paisner
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Patent number: 4820755Abstract: This invention provides polymers containing radiochromic hindered phenolic stabilizers which are characterized by including a blue compound which interacts with the hindered phenolic during irradiation to provide a color change indicative of sterility.Type: GrantFiled: August 18, 1987Date of Patent: April 11, 1989Assignee: American Cyanamid CompanyInventor: Joseph R. Webster
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Patent number: 4812501Abstract: 1,3,2-oxazaphospholidine derivatives of the formula ##STR1## are effective in stabilizing organic materials against oxidative, thermal and actinic degradation, said derivatives being particularly effective as color improvers and process stabilizers in organic materials containing phenolic antioxidants.Type: GrantFiled: March 16, 1988Date of Patent: March 14, 1989Assignee: Ciba-Geigy CorporationInventors: Paul A. Odorisio, Stephen D. Pastor, James L. Hyun
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Patent number: 4783395Abstract: The invention provides an organic solvent free, phosphate free, lithographic desensitizing composition which comprises:(a) from about 0.1% to about 20.0% by weight of the composition of a copolymer of polymethyl vinyl ether and maleic acid having the formula ##STR1## which has a molecular weight in an amount of from about 20,000 to about 70,000; and(b) from about 0.1% to about 20.0% by weight of the composition of a desensitizing component comprising one or more hydroxy carboxylic acids or salts; and(c) sufficient water to formulate a desensitizing composition; and(d) sufficient base to adjust the pH of the composition into the range of from about 6.5 to about 7.5.Type: GrantFiled: November 5, 1987Date of Patent: November 8, 1988Assignee: Hoechst Celanese CorporationInventors: Shane Hsieh, Wayne A. Mitchell
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Patent number: 4783492Abstract: A composition for selectively reducing the permeability of the higher permeability zones of a subterranean reservoir having heterogeneous permeability, such permeability reduction extending continuously from nearby the well as far into the reservoir as is desired. Said composition comprises an aqueous solution or solutions of a water-soluble polymer, a material capable under certain conditions of at least partially cross-linking the polymer to form a gelatinuous precipitate, a water-soluble alkaline material in an amount sufficient to maintain the pH of the polymer-containing composition above the pH at which cross-linking occurs until the composition has passed a desired distance through the reservoir, and a temperature-activated water-soluble acidic material dissolved in the aqueous solution in an amount sufficient to lower the pH of the overall solution to the pH at which cross-linking occurs when said solution is subjected to an elevated temperature.Type: GrantFiled: April 24, 1985Date of Patent: November 8, 1988Assignee: Union Oil Company of CaliforniaInventors: Hoai T. Dovan, Richard D. Hutchins
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Patent number: 4774274Abstract: A process for producing a bisphenol compound useful as deterioration preventor capable of stabilizing organic substances against the decompositions caused by heat, light and oxygen, represented by the following general formula: ##STR1## wherein R.sub.1 represents alkyl group having 1 to 3 carbon atoms, alkenyl group having 2 to 4 carbon atoms, phenyl group or 2-phenylethenyl group; R.sub.2 represents alkyl group having 1 to 5 carbon atoms, or cyclohexyl group; R.sub.3 represents alkyl group having 1 to 9 carbon atoms, cyclohexyl group or phenyl group; and R.sub.4 represents alkyl group having 1 to 11 carbon atoms or phenyl group, which comprises reacting a carboxylic acid represented by the following general formula: ##STR2## wherein R.sub.1 is as defined above, with a bisphenol compound represented by the following general formula: ##STR3## wherein R.sub.2, R.sub.3 and R.sub.Type: GrantFiled: June 22, 1987Date of Patent: September 27, 1988Assignee: Sumitomo Chemical Company, LimitedInventors: Takeshi Takata, Shin-ichi Yachigo, Tatsuo Kaneoya, Haruki Okamura, Yukoh Takahashi
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Patent number: 4774044Abstract: There is disclosed a method for rendering fine denier polypropylene filaments and fibers flame retardant. The method includes mixing flame retardant compounds, such as an aromatic bromine and antimony oxide, with an anti-oxidant and low density polyethylene prior to mixing with the polypropylene resin.Type: GrantFiled: June 26, 1986Date of Patent: September 27, 1988Assignee: Techlon Fibers CorporationInventors: Bobby L. Cline, Gerard M. O'Mahony
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Patent number: 4757102Abstract: Various substituted aminoxy alkylamine derivatives are effective in stabilizing organic materials against oxidative, thermal and actinic degradation, said derivatives being particularly effective as color improvers and process stabilizers in organic materials containing phenolic antioxidants and/or metal salts of fatty acids and/or hindered amine light stabilizers and/or organic phosphorus compounds; and certain of said derivatives as new compounds.Type: GrantFiled: May 12, 1986Date of Patent: July 12, 1988Assignee: Ciba-Geigy CorporationInventors: Ramanathan Ravichandran, Stephen D. Pastor, Thomas E. Snead
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Patent number: 4735980Abstract: This invention is concerned with compounds of the structural formula: ##STR1## wherein R.sup.1 and R.sup.2 may be the same or different radical selected from the group consisting of hydrogen and methyl radicals; when R.sup.1 is a hydrogen radical, R is an alkyl radical of 5 to 11 carbon atoms; when R.sup.1 is a methyl radical, R is a radical of 4 to 10 carbon atoms; when R.sup.2 is a hydrogen radical, R.sup.3 is an alkyl radical of 5 to 11 carbon atoms; when R.sup.2 is a methyl radical, R.sup.3 is an alkyl radical of 4 to 10 carbon atoms. These compounds have utility as synergists for phenolic type and amine type antioxidants in the stabilization of natural and synthetic rubbers.Type: GrantFiled: March 9, 1987Date of Patent: April 5, 1988Assignee: The Goodyear Tire & Rubber CompanyInventors: Budd H. Sturm, Joseph A. Kuczkowski, Joel Muse
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Patent number: 4732923Abstract: A butadiene polymer composition having incorporated the following stabilizers therein:A phenolic compound (I) of the formula: ##STR1## wherein R.sub.1 represents a C.sub.1 -C.sub.4 alkyl group, and a sulfur-containing compound (II) represented by the general formula, ##STR2## wherein R.sub.2 and R.sub.3 independently represent a hydrogen atom or a C.sub.1 -C.sub.6 alkyl group, and R.sub.4 represents a C.sub.3 -C.sub.18 alkyl group, wherein the weight ratio of (I) to (II) is 1 to 0.5-10. The butadiene polymer composition of the present invention is quite effective to prevent gel formation caused by heat, especially in the absence of oxygen.Type: GrantFiled: July 16, 1986Date of Patent: March 22, 1988Assignee: Sumitomo Chemical Co., Ltd.Inventors: Takeshi Takata, Shinichi Yachigo, Yukoh Takahashi, Manji Sasaki, Taisuke Okita
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Patent number: 4731404Abstract: The present invention is a composition comprising a linear saturated polyester and from 0.5 to 30 percent by weight of the polyester of at least one ester of a polyfunctional alcohol having a molecular weight of from 900 to about 1,500. The ester is of an alcohol and a carboxylic acid wherein the alcohol has the formulaR.sup.1 [(OR.sup.2).sub.n OH].sub.mwherein R.sup.1 is a hydrocarbon radical of from 3 to 10 carbon atoms, R.sup.2 is a hydrocarbon radical of from 2 to 4 carbon atoms, n can be the same or a different interger of from 2 to 15, m is an integer of from 3 to 6. The alcohol has greater than 20 carbon atoms. The acid is a carboxylic acid of from 1 to 25 and preferably 3 to 10 carbon atoms, and from 1 to 10 carboxyl groups. Preferably the acid has from 3 to 10 carbon atoms and one carboxyl group.Type: GrantFiled: August 25, 1986Date of Patent: March 15, 1988Assignee: Allied CorporationInventors: John C. Haylock, Harold W. Tuller, John A. Bander
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Patent number: 4730015Abstract: A polyacetal resin composition comprises a polyacetal resin as the matrix, (A) 0.01 to 2.0 percent by weight of a stabilizer selected from a benzotriazole compound, a benzophenone compound and an aromatic benzoate compound and (B) 0.01 to 2.0 percent by weight of a hindered amine compound and is improved in whetherability.Type: GrantFiled: July 22, 1985Date of Patent: March 8, 1988Assignee: Polyplastics Co., Ltd.Inventors: Yukio Ikenaga, Masami Yamawaki, Kunio Suzuki
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Patent number: 4727103Abstract: Isocyanurate esters of carboxyalkylthioalkanoesterphenols useful in the stabilization of organic materials normally susceptible to oxidative degradation are prepared by reacting an appropriate isocyanurate trithiol, which is a selected tris-mercapto alkanoic acid ester of tris-(2-hydroxyethyl) isocyanurate with an appropriate alkenyl compound, which is a selected 4-hydroxy-(mono- or di-alkyl)phenyl alkyl alkenoate. In a preferred embodiment, the ester is 1,3,5-tris [( 3,5-di-tert-butyl-4-hydroxyphenyl)-(3-propyl) oxycarbonylethylthiopropionyloxyethyl] isocyanurate.Type: GrantFiled: June 29, 1987Date of Patent: February 23, 1988Assignee: Mallinckrodt, Inc.Inventor: Neil Dunski
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Patent number: 4722955Abstract: Carbonate polymer compositions exhibit good thermal stability and good non-yellowing characteristics. Compositions comprise a carbonate polymer (e.g., a homopolycarbonate of bisphenol A), a heat stabilizing phosphorous compound (e.g., an organo-phosphite or an organo-phosphonite), an epoxy compound containing internal acyclic ether linkages (e.g., a diglycidyl ether of a polypropylene glycol), and optionally a hindered phenol. Such compositions retain desirable properties upon exposure to hot and humid conditions.Type: GrantFiled: April 15, 1985Date of Patent: February 2, 1988Assignee: The Dow Chemical CompanyInventor: Kevin F. Dick
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Patent number: 4714801Abstract: A sealant material that is relatively chemically inert toward plastics and adhesives is comprised of a homogeneous mixture of polymeric adipate polyester and fumed silica, the polyester comprising about 80 to 85 percent by weight of the mixture and the fumed silica comprising about 15 percent to 20 percent by weight of the mixture. In the preferred embodiment, the sealant material further contains about 0.02 to 0.04 percent of an organofunctional silane and about 0.03 percent to 0.07 percent of a fluorosurfactant.Type: GrantFiled: August 20, 1985Date of Patent: December 22, 1987Assignee: AMP IncorporatedInventors: Francis F. Koblitz, Lynn K. Snyder
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Patent number: 4708979Abstract: Spherically polymerized polyolefins can be advantageously stabilized by being treated with at least one emulsion or dispersion containing a stabilizer or a mixture of stabilizers and an amine of formula I ##STR1## wherein R.sub.1 is C.sub.1 -C.sub.20 alkyl which may be substituted by --OH, or is C.sub.3 -C.sub.50 alkyl which is interrupted by one or more oxygen atoms, or is C.sub.1 -C.sub.8 alkoxy, and each of R.sub.2 and R.sub.3 independently of the other is hydrogen or has one of the meanings indicated for R.sub.1, or R.sub.2 and Rphd 3, together with the nitrogen atom to which they are attached, form a 5- to 7-membered heterocyclic ring.Type: GrantFiled: April 25, 1986Date of Patent: November 24, 1987Assignee: Ciba-Geigy CorporationInventors: Enea Pedrazzetti, Andre Schmitter, Walter W. Meyer
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Patent number: 4703073Abstract: Alkylated N,N-dibenzylhydroxylamine derivatives are effective in stabilizing polyolefin compositions containing a stabilizer or mixture of stabilizers selected from the group consisting of the phenolic antioxidants, the hindered amine light stabilizers, the alkylated hydroxybenzoate light stabilizers, the ultraviolet light absorbers, the organic phosphorus compounds, the alkaline metal salts of fatty acids and the thiosyner-gists, against degradation upon high temperature extrusion, exposure to the combustion products of natural gas, gamma irradiation or upon storage for extended periods.Type: GrantFiled: September 15, 1986Date of Patent: October 27, 1987Assignee: Ciba-Geigy CorporationInventors: Roland A. E. Winter, Ramanathan Ravichandran, Raymond Seltzer
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Patent number: 4699939Abstract: Compounds of formula I ##STR1## wherein R.sub.1, R.sub.2 and A are essentially hydrocarbyl or substituted hydrocarbyl groups with at least one of R.sub.1 and R.sub.2 being cyclohexyl, n is 0, 1 or 2, m is an integer of 1 to 4 and X is oxygen or --N(R.sub.3)-- wherein R.sub.3 is hydrogen, C.sub.1 -C.sub.4 alkyl or phenyl.Type: GrantFiled: October 8, 1986Date of Patent: October 13, 1987Assignee: Ciba-Geigy CorporationInventors: Ivan Orban, Hans-Rudolf Meier, Paul Dubs, Samuel Evans, Peter Hofmann
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Patent number: 4699942Abstract: Compositions suitable for molding are produced by examining a (1) polyethylene terephthalate polyester, (2) a low molecular weight polyethylene mold release agent (3) talc as nucleating agent, (4) carbon black, (5) a hindered phenolic antioxidant and (6) other optional ingredients such as reinforcing glass fibers.Type: GrantFiled: August 30, 1985Date of Patent: October 13, 1987Assignee: Eastman Kodak Co.Inventors: James C. Weaver, Wayne P. Pruett
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Patent number: 4684687Abstract: A composition for use in piping and pump systems for elevated temperature, steam and certain chemical resistant applications of ethylene-propylene copolymer with peroxide generated carbon to carbon crosslinkage. Effective amounts of antioxidants, carbon black, lubricant, thermal stabilizer and aid to peroxide crosslinkage is added. An antioxidant and thermal stabilizer system is used to produce a product with unusual thermal stability characteristics. The composition may also have a mixture of high and low particle size carbon black which acts as an antioxidant and reinforcing system. The composition may also use very fine particle carbon black for a highly elastic application. The composition can be used for rubber components which are exposed to a high temperature or to certain chemical environments, or where unusually high elasticity is required.Type: GrantFiled: December 13, 1985Date of Patent: August 4, 1987Assignee: Hydril CompanyInventors: William D. Breach, Edwin W. Vaclavik
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Patent number: 4680325Abstract: Isocyanurate esters of thioalkanoamidophenols useful in the stabilization of organic materials normally susceptible to oxidative degradation are prepared by reacting an appropriate isocyanurate trithiol, which is a selected tris-mercapto alkanoic acid ester of tris-(2-hydroxyethyl) isocyanurate with an appropriate alkenyl compound, which is a selected N-alkenyl[4-amino-(mono- or dialkyl)phenol] or, where the alkano moiety is a sole methylene group, by reaction of tris-(2-hydroxyethyl) isocyanurate with an appropriate [mercapto-N-(mono- or di-alkyl]-4-hydroxyphenylalkanamide alkenoic] acid. In a preferred embodiment, the ester is 1,3,5-tris{2-hydroxy ethyl-[3-mercapto-(3',5'-di-tert-butyl-4'-hydroxypropionanilide)]propionat e}isocyanurate.Type: GrantFiled: February 10, 1986Date of Patent: July 14, 1987Assignee: Mallinckrodt, Inc.Inventors: Neil Dunski, Ali A. Bazzi, Henry J. Buehler
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Patent number: 4670491Abstract: Polyolefin compositions which are pigmented with titanium dioxide are rendered actinic radiation stabilized by incorporating therein a C.sub.12-20 alkyl ester of 3,5-di-tert.butyl-4-hydroxybenzoic acid.Type: GrantFiled: August 14, 1985Date of Patent: June 2, 1987Assignee: American Cyanamid CompanyInventors: Joseph A. Stretanski, Frank F. Loffelman
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Patent number: 4670495Abstract: Novel o-bridged polynuclear polyphenols of the formula I ##STR1## which contain at least one organic radical, such as alkyl, cycloalkyl or aryl, per phenyl nucleus and are formed by condensation of the monomeric phenolic components with customary bridging reagents, such as formaldehyde, acetone or sulfur dichloride, or by oxidative coupling of the monomeric phenolic components, and which, depending on the reaction procedure, can contain between 2 and 50 monomer units, are described.The substances according to the invention can be used for stabilizing plastics from oxidative degradation and have a good resistance to extraction.Type: GrantFiled: June 20, 1986Date of Patent: June 2, 1987Assignee: Ciba-Geigy CorporationInventor: Samuel Evans
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Patent number: 4670493Abstract: Stabilized against degradation by oxidizing liquids, based on polymers of alpha-olefins such as propylene, containing a phenolic antioxidant, a phosphonite and a sulfur-containing stabilizer chosen from the esters derived from aliphatic polyols and alkylthiodipropionic acids and from combinations of a metal sulfide with one of these esters or with an organic polysulfide and optionally also containing an organic phosphite and an anti-acid agent. These compositions exhibit outstanding resistance to the phenomenon of oxidative degradation produced particularly by the contact with hot washing products of all kinds.Type: GrantFiled: January 4, 1985Date of Patent: June 2, 1987Assignee: Solvay & Cie (Societe Anonyme)Inventors: Roger Van Asbroeck, Serge Blanc
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Patent number: 4668725Abstract: Organic compounds of phenolic nature for stabilizing organic polymers are described together with the process for preparing said stabilizing compounds. Stabilized polymer compositions incorporating said stabilizing compounds are also described.Type: GrantFiled: October 16, 1985Date of Patent: May 26, 1987Assignees: Enichem Sintesi S.p.A., Bozzetto Industrie Chimiche S.p.A.Inventors: Fabio Broussard, Carlo Busetto
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Patent number: 4644027Abstract: Phthalate polyester polyols comprising reaction products of a phthalic acid compound, a low molecular weight diol compound and a hydrophobic compound are provided which are compatibilized with fluorocarbon blowing agents and which possess a variety of other desirable characteristics. The polyols are producible by a simple heating process and are blendable with various conventional polyols and other additives to make resin prepolymer blends which can be catalytically reacted with organic isocyanates to produce cellular polyurethanes and polyurethane/polyisocyanurates.Type: GrantFiled: July 15, 1985Date of Patent: February 17, 1987Assignee: Stepan CompanyInventors: George Magnus, Melvin Loeb, Robert J. Wood
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Patent number: 4619957Abstract: Rigid polyvinyl chloride containing reduced amounts of titanium dioxide and a tin mercaptide thermal stabilizer, said polyvinyl chloride being stabilized against the adverse effects of ultraviolet radiation by the addition thereto of effective amounts of benzoate compounds.Type: GrantFiled: August 9, 1985Date of Patent: October 28, 1986Assignee: Ciba-Geigy CorporationInventors: William J. Reid, Jean M. Zappia, Gerald A. Capocci, John D. Spivack
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Patent number: 4617336Abstract: Acylated calixarene derivatives of the formula ##STR1## are prepared by the reaction of the appropriate hydroxyphenyl alkanoate and paraformaldehyde and are useful stabilizers of organic materials.Type: GrantFiled: November 22, 1985Date of Patent: October 14, 1986Assignee: Ciba-Geigy CorporationInventors: Stephen D. Pastor, Paul Odorisio
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Patent number: 4606931Abstract: A lift-off process for depositing a metallurgy layer on a substrate wherein the improvement is the use of a sacrificial masking layer that is substantially unaffected by exposure to high intensity radiation. The process includes the steps of (1) preparing a resin mixture of a polyaryl sulfone polymer, and a compound of the following: ##STR1## wherein R.sub.1 is a methyl ethyl or an .alpha. branched alkyl group from 3 to 10 atoms, R.sub.2 is a hydrogen, methyl, ethyl or a branched alkyl group of from 3 to 10 carbon atoms, and X has a value of 1 to 6, and Z is an aliphatic hydrocarbon of the formula C.sub.5 H.sub.8 the compound being present in the amount of from 0.5 to 3.Type: GrantFiled: June 27, 1983Date of Patent: August 19, 1986Assignee: International Business Machines CorporationInventors: Beverly L. Olsen, Augustus C. Ouano
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Patent number: 4603159Abstract: Synthetic resins, such as polyolefins, are stabilized with phenolic compounds of the formula ##STR1## where n is 1 to 4 and A is ##STR2## where R.sub.1 is C.sub.1 -C.sub.3 alkyl.Type: GrantFiled: February 27, 1985Date of Patent: July 29, 1986Assignee: Sumitomo Chemical Company, Ltd.Inventors: Tamaki Ishii, Shinichi Yachigo, Manji Sasaki, Haruki Okamura, Masahisa Shinoya
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Patent number: 4598113Abstract: Novel hydroxyalkylarylalkanoates of ethoxylated bisphenol A are provided which are useful as stabilizers of resins made from at least one ethylenically unsaturated monomer. A process for manufacture of these stabilizers is also provided.Type: GrantFiled: August 15, 1985Date of Patent: July 1, 1986Assignee: ICI Americas Inc.Inventors: John F. Stephen, Jerry H. Smith, Makram H. Meshreki
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Patent number: 4593057Abstract: Novel phenolic compounds derived from hexitans are disclosed which are useful stabilizers of synthetic polymer resins. A process for manufacture of these stabilizers is also provided.Type: GrantFiled: August 15, 1985Date of Patent: June 3, 1986Assignee: ICI Americas Inc.Inventors: John F. Stephen, Jerry H. Smith
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Patent number: 4590221Abstract: A method for producing foam polyolefin products which are light-stable and weather-resistant are obtained by the combined use of the following stabilizers:(a) phenolic antioxidants,(b) substituted benzophenones and/or substituted benzotriazoles, and(c) sterically hindered amines.Type: GrantFiled: November 28, 1984Date of Patent: May 20, 1986Assignee: Dynamit Nobel AGInventors: Werner Kuhnel, Paul Spielau
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Patent number: 4590231Abstract: N,N-Dibenzylhydroxylamine and other selected hydroxylamine derivatives are effective in stabilizing polyolefin compositions containing a stabilizer or mixture of stabilizers selected from the group consisting of the phenolic antioxidants, the hindered amine light stabilizers, the ultraviolet light absorbers, the organic phosphorus compounds, the alkaline metal salts of fatty acids and the thiosynergists, against degradation upon high temperature extrusion, exposure to the combustion products of natural gas, gamma irradiation or upon storage for extended periods.Type: GrantFiled: July 23, 1984Date of Patent: May 20, 1986Assignee: Ciba-Geigy CorporationInventors: Raymond Seltzer, Ambelal R. Patel, Peter W. Stewart, Charlene White
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Patent number: 4588807Abstract: The present invention relates to new benzylidenemalonic or vinylogous benzylidenemalonic acid polyesters containing structural units of the formula (I) ##STR1## their preparation and their use for the UV stabilization of thermoplastics, preferably thermoplastic, aromatic polycarbonates, thermoplastic, aromatic polyesters or thermoplastic polymethylmethacrylates.Type: GrantFiled: October 17, 1984Date of Patent: May 13, 1986Assignee: Bayer AktiengesellschaftInventors: Thomas Scholl, Reinhard Preuss, Burkhard Lachmann, Hartmut Lower, Peter R. Muller
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Patent number: 4584215Abstract: Polyvinylidene fluoride compositions have their flexibility improved by incorporation therewith of a minor proportion of one or more esters formed between at least one aliphatic diol such as 2,2-dimethyl 1,3-propanediol, a polyethylene glycol, propylene glycol, a polypropylene glycol, tetramethyleneglycol, a polytetramethyleneglycol or an aliphatic triol such as glycerol, and a monocarboxylic acid of aliphatic chain containing 2 to 10 carbon atoms or a monocarboxylic acid of aromatic radical such as benzoic acid. Polyvinylidene fluorides of improved flexibility are particularly useful for manufacturing flexible tubes for conveying various fluids such as, for example, hot water, chemical products, hydrocarbons.Type: GrantFiled: March 6, 1985Date of Patent: April 22, 1986Assignee: Institut Francais du PetroleInventors: Anne Bre, Marc Mollard, Maseh Osgan
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Patent number: 4579900Abstract: District heating pipes for potable water contain a polymer composition which comprises a butene-1 homopolymer, sterically hindered phenolic antioxidant, lauryl-stearyl thiodipropionate, nucleating agent, mineral filler coated with acid acceptor and pigment.Type: GrantFiled: March 27, 1985Date of Patent: April 1, 1986Assignee: Shell Oil CompanyInventors: Ananda M. Chatterjee, Earl E. Hayden