Tin Compound Is Dibutyl Tin Dilaurate Or Stannous Octoate Patents (Class 521/127)
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Patent number: 4353995Abstract: The instant invention is directed to a novel catalyst system for the production of polyurethane resin, and the method of use of such catalyst system. The catalyst systems of the instant invention broadly comprise(a) a tertiary amine,(b) a tin compound capable of catalyzing the reaction between an isocyanate group and an active hydrogen atom, and(c) a compound of the formula:(R--COO--.sub.2 Mewherein Me represents calcium or barium, andR represents a hydrocarbon group. It has been found that the component (c) tends to catalyze size reactions which occur during foaming between isocyanate groups and the initial reaction products of isocyanates and active hydrogen containing compounds.Type: GrantFiled: December 26, 1979Date of Patent: October 12, 1982Assignee: Mobay Chemical CorporationInventors: John F. Szabat, Gert F. Baumann, Gaeta L. Copeland
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Patent number: 4350779Abstract: The invention is a method for making reaction injection molded polyurethane of improved paintability properties. The product comprises the reaction product of a high molecular weight polyhydric polyether, a low molecular weight active hydrogen containing compound of at least two functionality, a polyisocyanate and a catalyst combination comprising methyldiethanolamine, dibutyltin dilaurate and an alkyltin mercaptide. This catalyst combination results in improved processing, a minimum of surface defects, excellent green strength and improved paintability using certain paints. Reaction injection molded elastomers are useful as molded articles of commerce including, but not limited to, vehicle body parts.Type: GrantFiled: May 29, 1981Date of Patent: September 21, 1982Assignee: Texaco Inc.Inventors: Richard J. G. Dominguez, David R. McCoy
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Patent number: 4345042Abstract: A polyurethane-modified polyisocyanurate foam having an excellent heat-resistance and flame-resistance and a reduced smoke-generation, comprises a reaction product of a mixture containing (A) at least one polyisocyanate compounds; (B) at least one polyol compound including, benzylic ether type phenolic resin of the formula (1): ##STR1## wherein R=H, hydrocarbon, oxyhydrocarbon or halogen, X=H or methylol, the molar ratio methylol/H.gtoreq.1, m+n.gtoreq.2 and m/m.gtoreq.1; p=1.about.3, (C) a trimerization catalyst, and; (D) a blowing agent, the ratio of the isocyanate equivalent of the isocyanate compound to the hydroxyl equivalent of the polyol compound being from 1.5 t 10.Type: GrantFiled: March 6, 1981Date of Patent: August 17, 1982Assignee: Hodogaya Chemical Co., Ltd.Inventors: Akira Kuroda, Tsutomu Nakamura, Masatoshi Onishi
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Patent number: 4310632Abstract: A process for making a polyurethane which comprises reacting an organic polyisocyanate with a higher molecular weight organic polyhydroxyl compound in the presence of a catalyst having the following formula: ##STR1## wherein X is sulfur or NH and n is a whole number from 2 to 6. Also used is a catalyst which is a combination of the above-mentioned catalyst and an organic tin compound.Type: GrantFiled: January 26, 1981Date of Patent: January 12, 1982Assignee: BASF AktiengesellschaftInventors: Heinrich Horacek, Manfred Barl, Rolf Wurmb, Matthias Marx
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Patent number: 4304875Abstract: A flexible, elastic, uniform polyurethane foam is cold foamed and set from a composition of matter comprising (i) a polyisocyanate, (ii) a polyether-polyol having a molecular weight ranging from 800 to 50,000 and at least 2.1 hydroxyl radicals per mol, of which hydroxyl radicals at least 35% are primary hydroxyl radicals, (iii) a stabilizing amount of an organosilicon stabilizer therefor, and (iv) a blowing agent; said organo silicon stabilizer being a triorganosilylated polypentaerythritol having the structural formula:(R.sub.3 SiOCH.sub.2).sub.4-a C{CH.sub.2 OCH.sub.2 C(CH.sub.2 OSiR.sub.3).sub.3 }.sub.awherein each R, which may be the same or different, is methyl, ethyl or vinyl, at least one R per each --SiR.sub.3 group being methyl, and further wherein a is 1, 2, 3 or 4.Type: GrantFiled: October 10, 1980Date of Patent: December 8, 1981Assignee: Rhone-Poulenc IndustriesInventors: Maurice Duvernay, Francesco Farina, Andre Guillaume
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Patent number: 4303755Abstract: A safety fuel tank for automobiles and the vehicles, wherein substantially skeletal reticulated flexible polyurethane foam is integrally foamed, is produced by reacting a mixture of (a) poly(oxypropylene-oxyethylene)polyetherpolyol having 51-98% by weight of ethylene oxide component and (b) poly(oxypropylene-oxyethylene)polyetherpolyol having not less than 51% by weight of propylene oxide component as the polyhydroxyl compound with an organic polyisocyanate in the presence of a catalyst, a foaming agent, a surfactant and an additive in a fuel tank.Type: GrantFiled: November 16, 1979Date of Patent: December 1, 1981Assignee: Bridgestone Tire Co., Ltd.Inventors: Toshio Yukuta, Kazuo Yagura, Nobuhisa Fuchigami
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Patent number: 4299923Abstract: Organosiloxane copolymers containing alkyl groups having from 5 to 20 carbon atoms that have beneficial utility as foam stabilizers in the manufacture of low density high resilience polyurethane foam; solutions of such copolymers; a process for producing low density high resilience polyurethane foam utilizing as a foam stabilizer said organosiloxane copolymers; and the foams derived therefrom.Type: GrantFiled: March 27, 1980Date of Patent: November 10, 1981Assignee: Union Carbide CorporationInventors: Feyyaz O. Baskent, James D. Reedy
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Patent number: 4289856Abstract: A process for preparing an integral-skinned polyurethane foam wherein a foamable composition for formation of polyurethane which comprises a polyol, polyisocyanate, cross-linking agent, catalyst, and blowing agent is reacted and expanded in a mold, characterized in that(a) said polyol is a polyether polyol having a terminal ethylene oxide adduct rate of at least 60%, an OH number of 20 to 100 and a functionality of 4 to 8, or a polyester polyol having a functionality of 4 to 8;(b) said polyisocyanate is a non-aromatic polyisocyanate having an isocyanate index of 90 to 130;(c) said cross-linking agent is diethanolamine and ranges from 0.5 to 20 parts by weight based on 100 parts by weight of said polyol;(d) said catalyst is an organometallic salt; and(e) said blowing agent is a halogenated hydrocarbon of a low boiling point.Type: GrantFiled: November 14, 1979Date of Patent: September 15, 1981Assignee: The Toyo Rubber Industry Co., Ltd.Inventors: Masaki Yamamoto, Ichiro Azuma
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Patent number: 4284730Abstract: The invention relates to carbodiimide- and/or uretonimine-isocyanurate-containing polyisocyanates, to the process for their preparation, and to microcellular foams prepared therefrom.These compositions may be prepared in the presence of the appropriate catalyst by(a) a partial trimerization of a mixture of polyisocyanate and carbodiimide and uretonimine containing polyisocyanate with trimer catalyst to the desired free isocyanate level,(b) sequential, partial carbodiimidization followed by partial trimerization of a polyisocyanate to the desired free isocyanate level(c) sequential partial trimerization of a polyisocyanate followed by partial carbodiimidization,(d) simultaneous conversion using the mixed catalyst system of carbodiimide and isocyanurate catalysts reacted to the desired free isocyanate level, and(e) blending liquid polyisocyanate with the carbodiimide and uretonimine containing polyisocyanate and isocyanurate containing polyisocyanate to the desired isocyanate level.Type: GrantFiled: February 7, 1980Date of Patent: August 18, 1981Assignee: BASF Wyandotte CorporationInventors: Thirumurti Narayan, Peter T. Kan
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Patent number: 4273908Abstract: Poly (polyisocyanate-polyol-alkali metal silicate) solid or foamed products are produced by mixing a dry granular alkali metal silicate with a polyol while heating to form an emulsion which is then reacted with an organic polyisocyanate.Type: GrantFiled: May 5, 1980Date of Patent: June 16, 1981Inventor: David H. Blount
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Patent number: 4273885Abstract: The invention is a method for making reaction injection molded polyurethane of improved properties. The product comprises the reaction product of a high molecular weight polyhydric polyether, a low molecular weight active hydrogen containing compound of at least two functionality, a polyisocyanate and a catalyst combination comprising a weak tertiary amine, a fast gelation organo tin compound and a delayed action organo tin catalyst. This catalyst combination results in improved processing, a minimum of surface defects and excellent green strength. Reaction injection molded elastomers are useful as molded articles of commerce including, but not limited to, vehicle body parts.Type: GrantFiled: April 1, 1980Date of Patent: June 16, 1981Assignee: Texaco Development Corp.Inventors: Richard J. G. Dominguez, Doris M. Rice
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Patent number: 4264744Abstract: The use of methylene chloride as a blowing agent for resinous foams, particularly urethane foams is improved by incorporating a low molecular weight polyhydroxy aliphatic compound having more than two hydroxyl groups. Simultaneously with the addition the amount of gelling catalyst (e.g., stannous octoate) required to obtain good foam, particularly the very soft foams, is reduced over that required using the methylene chloride without the addition of the polyhydroxy compound. Similarly, when the polyhydroxy compound of this invention is used, smaller amounts of the gelling catalyst are employed for equal foam properties when the fluorinated halocarbons are employed either alone or in combination with the methylene chloride.Type: GrantFiled: December 26, 1979Date of Patent: April 28, 1981Assignee: The Dow Chemical CompanyInventors: Olga L. Milovanovic, Wolf Sehr, Richard S. Sayad
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Patent number: 4259452Abstract: A method of producing flexible polyether polyurethane foams, which have a substantially skeletal reticulated structure, is disclosed. When the flexible foam is produced by reacting a polyhydroxyl compound with an organic polyisocyanate in the presence of a blowing agent by one-shot process, a catalyst and other additives, a mixture of (a) poly(oxyethylene-oxypropylene)polyether polyol containing 51 to 98% by weight of ethylene oxide component and (b) poly(oxyethylene-oxypropylene)polyether polyol containing not less than 51% by weight of propylene oxide component is used as the polyhydroxyl compound.Type: GrantFiled: May 15, 1979Date of Patent: March 31, 1981Assignee: Bridgestone Tire Company LimitedInventors: Toshio Yukuta, Kazuo Yagura, Nobuhisa Fuchigami
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Patent number: 4256841Abstract: To prepare light-stable polyurethane integral skin foams, especially soft integral foams, aliphatic and/or cycloaliphatic polyisocyanates, both categories preferably containing urethane groups and/or biuret groups, are reacted with polyols in the presence of blowing agents and of a synergistic catalyst combination comprising an alkali metal hydroxide, alkali metal alcoholate, alkali metal phenolate, alkali metal salt of a weak acid and/or hexahydrotriazine derivative and an organic tin, zinc and/or iron(II) compound, in the presence or absence of assistants and adjuvants.The preferred catalyst combination is tri-(dimethylaminopropyl)-s-hexahydrotriazine and dibutyl-tin dilaurate.Type: GrantFiled: May 14, 1979Date of Patent: March 17, 1981Assignee: BASF AktiengesellschaftInventors: Heinrich Horacek, Ernst Schoen, Erhardt Reich, Otto Volkert
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Patent number: 4248930Abstract: A process is disclosed for producing polyurethane resins using novel catalysts selected from the group consisting of a process for the production of cellular or non-cellular polyurethane resins comprising reacting:(a) polyisocyanates; with(b) compounds having at least 2 isocyanate reactive hydrogen atoms; in the presence of(c) tertiary amines as catalysts; optionally with the addition of(d) blowing agents, stabilizers and other known additives; characterized in that the substances used as component (c) comprise compounds selected from the group consisting of ##STR1## and mixtures thereof in which formulae: the symbols R may be the same or different and represent straight or branched-chain alkyl groups having from 1 to 4 carbon atoms;the symbols n may be the same or different and represent 2 or 3;the symbols m may be the same or different and represent 2 or 3; andk represents an integer of from 1 to 5.Type: GrantFiled: December 26, 1979Date of Patent: February 3, 1981Assignee: Bayer AktiengesellschaftInventors: Peter Haas, Johannes Blahak, Werner Mormann, Manfred Kapps
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Patent number: 4246356Abstract: A foam material, such as a polyurethane foam, is formed by mixing a polymer forming material with a blowing agent and two catalysts, one catalyst being provided to catalyze polymer formation and the other catalyst being provided to catalyze blowing. An auxiliary blowing agent in the form of a vaporizable substance, such as methylene chloride, is also incorporated. In one embodiment, the mixed components are maintained in a reaction vessel prior to application of same to a surface on which the foam is allowed to expand. In a further embodiment, in the case where the foam is polyurethane foam and the vaporizable substance is methylene chloride, the mixed components are maintained in a reaction vessel prior to application of same to a surface on which the foam is allowed to expand and the methylene chloride is used in an amount in excess of 12% of the weight of the polyurethane-forming material.Type: GrantFiled: May 18, 1979Date of Patent: January 20, 1981Inventor: Graham D. Walmsley
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Patent number: 4243760Abstract: Covers a polyurethane elastomer of improved moldability, particularly useful in RIM applications which comprises the reaction product of an aromatic polyisocyanate, a high molecular weight polyether triol containing an internal mixed propylene oxide-ethylene oxide segment comprising 2-35% ethylene oxide by weight and 65-98% by weight of propylene oxide and an ethylene oxide cap such that said polyol has a primary hydroxyl content greater than 50% and preferably greater than 90%, and a chain-extending agent. Also covers the method of making said elastomer.Type: GrantFiled: May 23, 1979Date of Patent: January 6, 1981Assignee: Texaco Development CorporationInventors: Kenneth G. McDaniel, Doris M. Rice, Michael Cuscurida
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Patent number: 4242463Abstract: This disclosure relates to a new color stable integral skin polyurethane foam and method of producing the same wherein an integral skin foam is provided which will not "yellow" or change color severely when exposed to ultraviolet light or other visible radiation. The foam composition in its most basic aspect involves the combination of a polyol, an isocyanate, and a crosslinker or chainextender, with a catalyst comprised of stannous octoate and dimethyltin dilaurate. Other ingredients such as a blowing agent, a pigment, an ultraviolet stabilizer, an anti-oxidant, and an anti-ozonant may be added depending upon the final properties desired.Type: GrantFiled: December 19, 1979Date of Patent: December 30, 1980Assignee: Sheller-Globe CorporationInventors: John L. Sanok, Albert F. Reilly
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Patent number: 4240950Abstract: The instant invention is directed to a process for the production of non-disintegrating suspensions of inorganic fillers in polyhydroxyl compounds of the type used for the production of polyurethanes, comprising reacting a suspension of an inorganic filler in a polyhydroxyl compound with from 0.1 to 2%, by weight, of a polyisocyanate, based on the weight of the suspension, at a temperature of from 30.degree. to 200.degree. C. The invention is also directed to the use of the suspension as the polyol component in the production of cellular polyurethane plastics.Type: GrantFiled: July 30, 1979Date of Patent: December 23, 1980Assignee: Bayer AktiengesellschaftInventors: Wulf von Bonin, Peter Vehlewald, Hans-Walter Illger
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Patent number: 4237235Abstract: Urethane polymers are produced by reacting isocyanate with hydroxyl compounds in the presence of a catalytic amount of a chelating catalyst or cocatalyst which is a complex of a chelating agent with metallic ions and which does not react with the reagents.Type: GrantFiled: August 21, 1978Date of Patent: December 2, 1980Inventor: Rosalba Mazzucco
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Patent number: 4223098Abstract: Low density flexible polyurethane foams can be prepared using water and relatively large amounts of methylene chloride as the foaming agents in the presence of an organic or inorganic tin compound as the gel catalyst and a foaming catalyst consisting essentially of catalytically effective amounts of an antimony carboxylate, a potassium carboxylate and a zinc carboxylate.Type: GrantFiled: October 30, 1978Date of Patent: September 16, 1980Assignee: M&T Chemicals Inc.Inventor: Kenneth Treadwell
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Patent number: 4221877Abstract: Covers a water-modified diisocyanate mixture obtained from water-treating a diphenylmethane diisocyanate to provide a diisocyanate mixture comprising 3-25 percent by weight of diphenylmethane biuret isocyanate and 75-97 percent diphenylmethane diisocyanate. Also covers the use of said water-modified diphenylmethane diisocyanate in preparing an improved polyurethane or polyisocyanurate polymer. Also covers said polymers.Type: GrantFiled: January 27, 1978Date of Patent: September 9, 1980Assignee: Texaco Development Corp.Inventors: Michael Cuscurida, Robert L. Zimmerman, Bobbie J. Ramey, deceased
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Patent number: 4218543Abstract: The instant invention relates to a one-step process for the production of elastomeric moldings which have a compact surface by the technique of reaction injection molding, using highly reactive systems of specific polyisocyanates, polyhydroxyl compounds and specific active aromatic polyamines. The instant invention further relates to active hydrogen containing blends useful in preparing elastomeric moldings, said blends comprising polyhydroxyl compounds, and specific active aromatic diamines. The blends herein may also contain catalyst for the reaction between hydroxyl groups and isocyanate groups.Type: GrantFiled: January 15, 1979Date of Patent: August 19, 1980Assignee: Bayer AktiengesellschaftInventors: Christian Weber, Hermann Schafer
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Patent number: 4217247Abstract: The instant invention is directed to a novel catalyst system for the production of polyurethane resin, and the method of use of such catalyst system. The catalyst systems of the instant invention broadly comprise(a) a tertiary amine,(b) a tin compound capable of catalyzing the reaction between an isocyanate group and an active hydrogen atom, and(c) a compound of the formula:(R-COO--.sub.2 Mewherein Me represents calcium or barium, andR represents a hydrocarbon group. It has been found that the component (c) tends to catalyze side reactions which occur during foaming between isocyanate groups and the initial reaction products of isocyanates and active hydrogen containing compounds.Type: GrantFiled: March 7, 1979Date of Patent: August 12, 1980Assignee: Mobay Chemical CorporationInventors: John F. Szabat, Gert F. Baumann, Gaeta L. Copeland
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Patent number: 4212952Abstract: A process for preparation of a urethane foam which comprises reacting an aromatic polyisocyanate with a polyol in the presence of a blowing agent and a catalytic amount of a compound of the formula(CH.sub.3).sub.2 NCH.sub.2 CH.sub.2 (CH.sub.2).sub.n CH.sub.2 CH.sub.2 N(CH.sub.3).sub.2wherein n is 4, 3, 2, 1, or 0.Type: GrantFiled: December 21, 1978Date of Patent: July 15, 1980Assignee: Union Carbide CorporationInventors: Gerald J. Murphy, Bernard Kanner
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Patent number: 4205136Abstract: A process for producing a rigid polyurethane foam having excellent flame retardance and low-smoke development is disclosed. When the rigid polyurethane foam is produced by reacting a polyhydroxyl compound with an organic polyisocyanate in the presence of a blowing agent, a surfactant, a catalyst and other additives, 3-methylpentane-1,3,5-triol is used as a part of the polyhydroxyl compound.Type: GrantFiled: February 21, 1979Date of Patent: May 27, 1980Assignee: Bridgestone Tire Company LimitedInventors: Takashi Ohashi, Minoru Kojima, Masako Yoshida, Toru Okuyama, Ryozo Sakata
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Patent number: 4204051Abstract: This invention relates to a process for the preparation of new organic compounds having blocked hydroxyl groups, which compounds are converted by the action of moisture into compounds having free hydroxyl groups, the preferred compounds obtainable by this process, and a process for the preparation of polyurethanes in which mixtures containing polyisocyanates and compounds which can be converted into polyols by hydrolysis are reacted with water.Type: GrantFiled: June 12, 1978Date of Patent: May 20, 1980Assignee: Bayer AktiengesellschaftInventors: Wolfgang Wellner, Hermann Gruber
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Patent number: 4189542Abstract: The instant invention is directed to a process for the production of weather-resistant rigid molded foams based on polyurethanes having a dimensional stability under heat according to DIN 53 432 of at least 70.degree. C. and a compact surface, a cellular core and an integral density distribution throughout the cross-section of the moldings, comprising foaming a foamable reaction mixture of polyisocyanates, polyhydroxyl compounds, blowing agents and, optionally, other isocyanate-reactive compounds, activators and other auxiliaries in a closed mold under the conditions of in-mold foaming, the improvement wherein the polyisocyanates used are reaction products containing isocyanate groups and urethane groups, said reaction products formed by reacting diisocyanates containing at least one cycloaliphatically bound isocyanate group and no more than one aliphatically bound isocyanate group with sub-stoichiometric quantities of organic polyhydroxyl compounds.Type: GrantFiled: August 2, 1978Date of Patent: February 19, 1980Assignee: Bayer AktiengesellschaftInventors: Helmut Kleimann, Holger Meyborg, Hans-Jurgen Lienert, Gerhard Grogler
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Patent number: 4177333Abstract: Polyimide foam products having greatly improved burn-through and flame-spread resistance are prepared by the reaction of aromatic polyisocyanates with aromatic dianhydrides in the presence of metallic salts of octoic acid. The salts, for example stannous octoate, ferric octoate and aluminum octoate, favor the formation of imide linkages at the expense of other possible reactions.Type: GrantFiled: February 24, 1978Date of Patent: December 4, 1979Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: Salvatore R. Riccitiello, Paul M. Sawko, Carlos A. Estrella
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Patent number: 4176217Abstract: Production of foamed plastics with improved combustion characteristics by condensing aqueous solutions of aminoplast precondensates with at least bifunctional organic isocyanate whereby an acid curing catalyst and an accelerator for polyurethane formation is used. For performing the condensation, the aqueous solution of the precondensate is added to the mixture of isocyanate and the accelerator at the same time as but separately from the acid curing catalyst.Type: GrantFiled: January 4, 1979Date of Patent: November 27, 1979Assignee: Chemie Linz AktiengesellschaftInventors: Leopold Golser, Hubert Czepel, Gernard Stern
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Patent number: 4172186Abstract: A novel glycol and silicate-based surfactant composition is prepared by (a) obtaining a silicate-based component by a selective process involving (i) reaction of silicon tetrahalide with water and alcohol followed by (ii) transesterification with a polyether alcohol, and (b) subsequently combining the silicate-based component with glycols and/or polyglycol ethers. The resulting surfactant composition is utilized as a stabilizer in the production of polyurethane foam.Type: GrantFiled: March 13, 1978Date of Patent: October 23, 1979Assignee: Olin CorporationInventors: Robert N. Scott, Thomas A. Knowles
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Patent number: 4170697Abstract: Silicon halides will react chemically with polyols to produce polyol silicate resinous products which will react chemically with polyisocyanates to produce polyisocyanate silicate solid or cellular solid products.Type: GrantFiled: June 23, 1978Date of Patent: October 9, 1979Inventor: David H. Blount
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Patent number: 4166164Abstract: Rigid foams characterized by carbodiimide and isocyanurate linkages are prepared by catalytically condensing an organic polyisocyanate in the presence of (a) a carbodiimide-promoting compound and (b) certain C.sub.1 -C.sub.8 alkali metal carboxylates as trimerization catalysts.Type: GrantFiled: December 5, 1977Date of Patent: August 28, 1979Assignee: BASF Wyandotte CorporationInventors: Moses Cenker, Thirumurti Narayan, Harald P. Wulff
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Patent number: 4163086Abstract: Liquid oxyalkylated polyol prepolymers are prepared by oxyalkylating a prepolymer prepared from a hydroxy aromatic compound, an aldehyde and furfuryl alcohol with an alkylene oxide containing about 2-4 carbon atoms. The oxyalkylated polyol prepolymers have a viscosity of 1,000-500,000 centipoises at 25.degree. C. and contain about 1.1-6 moles of interpolymerized aldehyde, about 3.1-15 moles of interpolymerized furfuryl alcohol, and about 1-10 moles of interpolymerized alkylene oxide for each mole of interpolymerized hydroxy aromatic compound. The resultant prepolymers are highly reactive and may be further polymerized with or without monomers such as polyisocyanate to produce flame retardant solid or cellular interpolymers. Flame retardant solid or cellular polyurethanes are prepared in one variant by interpolymerizing organic polyisocyanates with the oxyalkylated polyol prepolymers. In another variant, flame retardant closed cell cellular interpolymers are provided.Type: GrantFiled: March 31, 1978Date of Patent: July 31, 1979Assignee: BASF Wyandotte CorporationInventors: Thirumurti Narayan, Moses Cenker
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Patent number: 4156759Abstract: Polyurethane foams are prepared by reacting an active hydrogen-containing organic compound with an organic polyisocyanate in the presence of a blowing agent and an amylaceous material which has been stabilized (a) by treating with a stabilizing agent containing an effective amount of an antioxidant capable of inhibiting the formation of oxidation products in the amylaceous material upon exposure to an oxidizing atmosphere or (b) by removing substantially all, or at least a major portion, of the oxidizable materials, particularly fatty acids or fats, from the amylaceous material.Type: GrantFiled: January 16, 1978Date of Patent: May 29, 1979Assignee: Krause Milling CompanyInventor: Fritz Hostettler
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Patent number: 4152497Abstract: Flame retarded polyurethane foams are prepared from a reaction mixture comprising as the flame retardant additive a compound containing 2,2,2-trichloroethyl group.Type: GrantFiled: March 27, 1978Date of Patent: May 1, 1979Assignee: Pennwalt CorporationInventors: Jeffrey D. Miano, Stanley R. Sandler
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Patent number: 4150212Abstract: This invention relates to new catalyst combinations having improved catalytic activity for isocyanate polyaddition reactions. The catalysts are combinations of known metal catalysts with aromatic compounds which contain at least one nitrogen atom as a hetero atom and have at least one primary amino group in the ortho- or para-position to the hetero atom. Preferred aromatic compounds include ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 which may be the same or different, each represent a hydrogen atom, an aliphatic hydrocarbon group having from 1 to 6 carbon atoms or an aromatic hydrocarbon group having from 6 to 12 carbon atoms or two of the groups R.sub.1 to R.sub.4 represent a condensed aromatic ring.Type: GrantFiled: June 23, 1978Date of Patent: April 17, 1979Assignee: Bayer AktiengesellschaftInventor: Holger Meyborg
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Patent number: 4147847Abstract: A method of preparing flexible flame retardant, one-shot polyether based polyurethane foams is disclosed, in which the flame retardancy and the physical properties of the resulting foams are maintained by utilizing specific foam stabilizers which reduce the normal amount of required flame retardant additives.Type: GrantFiled: November 14, 1973Date of Patent: April 3, 1979Assignee: Dow Corning CorporationInventor: Carl W. Schweiger
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Patent number: 4136241Abstract: In a process for producing polyurethane foam, which process comprises reacting in one step a polyether polyol and a crosslinking agent with a polyisocyanate in the presence of a catalyst and a blowing agent, the improvement of employing as at least a major proportion of the crosslinking agent a soluble amine salt obtained by reacting a cycloaliphatic polyamine having at least two primary amine groups with approximately the stoichiometric amount of a carboxylic acid.Type: GrantFiled: March 24, 1978Date of Patent: January 23, 1979Assignee: The Dow Chemical CompanyInventor: Rudolf Ammann
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Patent number: 4134994Abstract: Amine salts of tertiary amino acids have been found to be effective as catalysts for polyurethane synthesis and they have been found to exhibit delayed action, in many instances, in the polymerization of urethanes. Typically, the amine salts of tertiary amino acids are formed by initially reacting a primary or secondary amine with an aldehyde and disubstituted acid to form a Mannich adduct and then reacting the resulting Mannich acid adduct with an amine.Type: GrantFiled: December 1, 1976Date of Patent: January 16, 1979Assignee: Air Products and Chemicals, Inc.Inventors: Ibrahim S. Bechara, Philip J. Zaluska, Rocco L. Mascioli
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Patent number: 4131662Abstract: The instant invention is directed to novel mold release agents for polyurethane resins and to the use thereof, particularly in the closed mold forming of polyurethane foams. The mold release agents disclosed herein are applied to the surface of the mold prior to molding and broadly comprise talc dispersed in an emulsion of water and an organic solvent.Type: GrantFiled: January 3, 1978Date of Patent: December 26, 1978Assignee: Mobay Chemical CorporationInventors: Mark E. Cekoric, Robert M. Loring, William A. Ludwico
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Patent number: 4119584Abstract: This invention provides a low density (<2 pcf.) modified phenolic foam produced by combining a resole resin with a phosphorus-containing isocyanate-terminated prepolymer in the presence of a minor amount of a surfactant, a catalytic amount of an organotin catalyst, and a halocarbon blowing agent. Foam products producted by the method of the invention have a good combination of low combustibility, friability resistance and compressive strength.Type: GrantFiled: March 25, 1977Date of Patent: October 10, 1978Assignee: Union Carbide CorporationInventors: Anthony Joseph Papa, Richard Lee Rollins, Frank Edward Critchfield
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Patent number: 4115634Abstract: The amine salts of amino acid compositions have been found to be effective as a delayed action catalyst for organometallic catalyzed urethane synthesis. The acid which provides the basis for the salts is characterized generally by reacting an amine with an unsaturated acid, or with formaldehyde and hydrogen cyanide followed by hydrolysis of the resulting nitrile.Type: GrantFiled: December 1, 1976Date of Patent: September 19, 1978Assignee: Air Products & Chemicals, Inc.Inventors: Ibrahim S. Bechara, Rocco L. Mascioli, Philip J. Zaluska
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Patent number: 4115320Abstract: This invention relates to new catalyst combinations having improved catalytic activity for isocyanate polyaddition reactions. The catalysts are combinations of known metal catalysts with aromatic compounds which contain at least one nitrogen atom as a hetero atom and have at least one primary amino group in the ortho- or para-position to the hetero atom. Preferred aromatic compounds include ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 which may be the same or different, each represent a hydrogen atom, an aliphatic hydrocarbon group having from 1 to 6 carbon atoms or an aromatic hydrocarbon group having from 6 to 12 carbon atoms or two of the groups R.sub.1 to R.sub.4 represent a condensed aromatic ring.Type: GrantFiled: January 7, 1977Date of Patent: September 19, 1978Assignee: Bayer AktiengesellschaftInventor: Holger Meyborg
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Patent number: RE30887Abstract: Flame retardant polyurethane foams are prepared from compositions containing as flame retardant additives, a select group of halogenated phosphate esters.Type: GrantFiled: October 1, 1979Date of Patent: March 23, 1982Assignee: Olin CorporationInventor: Richard J. Turley