Ingredient Contains A -c-xh Group Wherein X Is A Chalcogen Atom And The Carbon Atom Is Not Double-bonded To A Chalcogen Atom, Phenol, Etc. Patents (Class 521/117)
  • Patent number: 5173559
    Abstract: The present invention relates to reactive systems comprising(a) a storable mixture of (i) a polyisocyanate component comprising at least one organic polyisocyanate, and (ii) an epoxide component stabilized by heating in the presence of an alkylating agent, wherein said heating is optionally carried out in the further presence of part of the polyisocyanate component (i),(b) an isocyanate-reactive component containing at least two isocyanate-reactive groups in a quantity such that 0.1 to 0.9 isocyanate-reactive groups are present for every isocyanate group in component (a), wherein at least 10% by weight of component (b) comprises compounds having a molecular weight greater than about 2000,(c) optionally, tertiary amines in a quantity such that the total storable mixture contains at least 0.005 mole of tertiary amine nitrogen atoms for each 100 g of the total amount of the storable mixture, and, optionally,(d) other auxiliaries and additives.
    Type: Grant
    Filed: October 20, 1989
    Date of Patent: December 22, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hanns-Peter Muller, Otto Ganster, Bruno Luckas
  • Patent number: 5166182
    Abstract: Blowing agents and blowing agent mixtures for preparing a cellular thermosetting plastic foam comprise either (1) a non-chlorinated, partially hydrogenated fluorocarbon with the general formula H.sub.x F.sub.y C.sub.z ; (2) a non-chlorinated, partially hydrogenated fluorocarbon ether with the general formula H.sub.x F.sub.y C.sub.z --O--C.sub.m F.sub.n H.sub.p ; (3) a non-chlorinated, non-hydrogenated, fully fluoronated fluorocarbon; (4) an azeotropic mixture having a boiling point below 50 degrees Celsius; or (5) any mixture of the foregoing. The azeotropic mixtures are produced from organic compounds having surface active properties that enable the blended azeotropic mixture to become miscible with polymer resins. Among the preferred compounds for use in azeotropic mixtures are n-pentane, acetone, methyl alcohol, methyl formate, ethyl formate, ethyl alcohol, 2-methyl butane, nitromethane, cyclopentane, 2,3,-dimethyl butane, 2,2,-dimethyl butane, and dimethyl sulfide.
    Type: Grant
    Filed: March 23, 1992
    Date of Patent: November 24, 1992
    Assignee: Atlas Roofing Corporation
    Inventor: Robert H. Blanpied
  • Patent number: 5155248
    Abstract: Reaction products of dibutyl tin oxide with selected aromatic aminocarboxylic acids, a process for their preparation and their use as catalysts for the preparation of polyurethanes.
    Type: Grant
    Filed: November 29, 1991
    Date of Patent: October 13, 1992
    Assignee: Rhein Chemie Rheinau GmbH
    Inventors: Volker Ullrich, Clemens Schudok
  • Patent number: 5153231
    Abstract: A multi-component foamable silicone composition is described and claimed which is capable of curing quickly at 20.degree. C. to provide a low density foamed mass. The composition comprises (A) one or more polydiorganosiloxanes having not less than three alkyl-hydrogensiloxane units per molecule, (B) one or more polydiorganosiloxanes having not less than two alkenyl-siloxane units (C) a liquid alcohol, (D) a fluorinated silicone foam stabilizing material and (E) a platinum catalyst for promoting reaction between the components. The composition may be packaged as two or more individually stable parts of substantially equal volume and viscosity each in a receptacle of material which is adapted to be opened by rupture so as to release the components for admixture. The composition is intended for use in forming a foam medical dressing by dispensing onto a surface e.g. an open wound and allowing the composition to cure at room temperature.
    Type: Grant
    Filed: March 12, 1992
    Date of Patent: October 6, 1992
    Assignee: Dow Corning France S.A.
    Inventors: Philippe L. Bouquet, David Pocknell
  • Patent number: 5147937
    Abstract: Uniformly sized polymer particles of 1-50 .mu.m diameter are made by gradually combining a water-insoluble monomer mixture with an aqueous dispersion of emulsion-polymerized polymer particles in the presence of a dispersion stabilizer and an oil-soluble, free-radical polymerization initiator.
    Type: Grant
    Filed: March 1, 1991
    Date of Patent: September 15, 1992
    Assignee: Rohm and Haas Company
    Inventors: Mark S. Frazza, Kim S. Ho, Alexander Kowalski, Robert R. Raney, Martin Vogel
  • Patent number: 5145976
    Abstract: Useful as catalysts for the reaction of a polyisocyanate or a partially blocked polyisocyanate with a hydroxy-containing compound are organotin compositions obtained by reacting a diorganotin oxide of the formula R.sub.2 SnO of a diorganotin dichloride of the formula R.sub.2 SnCl.sub.2 with a compound of the formula HS--CH.sub.2 CH(OH)CH.sub.2 XH where R is a C.sub.1 -C.sub.8 alkyl or an aryl group and X is --O-- or --S--.Also disclosed are cationic electrodepositable (CED) compositions containing such catalysts.
    Type: Grant
    Filed: September 6, 1991
    Date of Patent: September 8, 1992
    Assignee: Air Products and Chemicals, Inc.
    Inventors: James D. Nichols, John B. Dickenson
  • Patent number: 5143943
    Abstract: Polyether polyols and polyurethane foams are stabilized by including therein a liquid stabilizer composition of (a) 2,6-di-tert-butyl-4-sec-butylphenol, (b) a reaction product of diisobutylene, styrene and diphenylamine and (c) phenothiazine or C.sub.9-26 -alkyl substituted phenothiazine and wherein the ratio of the phenol to the reaction product is about 1:5 to 5:1 and the ratio of the mixture of components (a) and (b) to the phenothiazine compound is about 5.0:0.1 to 4.0:1.0. The stabilizer composition may further contain trihydrocarbyl phosphite to stabilize the color of same.
    Type: Grant
    Filed: February 18, 1992
    Date of Patent: September 1, 1992
    Assignee: R. T. Vanderbilt Company, Inc.
    Inventors: Richard A. Suhoza, Bruce R. Garney, Robert B. Lauder
  • Patent number: 5137929
    Abstract: The present invention relates to foam compositions which are expanded with hydrohalocarbon blowing agents in the presence of additives which decrease the formation of haloalkenes during the polymerization. Thus, the present invention provides compositions comprising polyisocyanate, polyol, hydrohalocarbon blowing agent, catalyst, surfactant, and at least one additive wherein the additive is capable of decreasing the amount of decomposition of said dehydrohalocarbon blowing agent to haloalkenes during polymerization of the polyisocyanate and the polyol.Depending upon the polyol and polyisocyanate used and the quantity of polyisocyanate used, the compositions may be used in pour-in-place molded foams; rigid urethane spray foams; rigid high and low density foams for slabstock, froth foams, and molded foams; rigid laminated boardstock; or specialty foams.
    Type: Grant
    Filed: June 21, 1991
    Date of Patent: August 11, 1992
    Assignee: Allied-Signal Inc.
    Inventors: Timothy R. Demmin, Richard E. Eibeck, Gary M. Knopeck, Robert C. Parker, Donna M. Ruszaj, Stephen F. Yates, George D. Green, Keith A. Horn, Willis Hammond, Raymond H. P. Thomas
  • Patent number: 5135961
    Abstract: Polyol compositions comprising a polyol and a halogenated flame retardant are stabilized for storage and handling by the addition of a stabilizing amount of an amine.
    Type: Grant
    Filed: July 27, 1990
    Date of Patent: August 4, 1992
    Assignee: Ethyl Corporation
    Inventor: Elbert F. Feske
  • Patent number: 5132333
    Abstract: A method for the preparation of flexible foams containing urethane groups and having a reduced hardness is disclosed. Polyethers, having at least two hydroxyl groups and a molecular weight of 400 to 12,000 are reacted with polyisocyanates in the presence of catalysts and water and, optionally, in the presence of emulsifiers, stabilizers, cross linking agents, blowing agents and conventional auxiliaries and additives. The method is carried out in the presence of 0.01 to 1.0 parts by weight, based on 100 parts by weight of the polyol, of the alkali salt or the alkaline earth metal salt of a hydroxycarboxylic acid. The method enables the use of chlorofluorocarbons to be omitted largely or completely as physical blowing agents.
    Type: Grant
    Filed: August 15, 1991
    Date of Patent: July 21, 1992
    Assignee: Th. Goldschmidt AG
    Inventors: Georg Burkhart, Hans-Heinrich Schlons, Volker Zellmer
  • Patent number: 5132040
    Abstract: A method for the preparation of polymeric foams which comprises reacting an organic polyisocyanate with a cyclic carbonate having at least one isocyanate-reactive substitutent attached to the carbonate ring.
    Type: Grant
    Filed: August 20, 1991
    Date of Patent: July 21, 1992
    Assignee: Imperial Chemical Industries PLC
    Inventors: David Randall, Rik De Vos
  • Patent number: 5132332
    Abstract: A method for preparing hard polyurethane and polyisocyanurate foams wherein an isocyanate and an active hydrogen containing compound are made to react in the presence of a catalyst, a foam stabilizer and a blowing agent which contains chloropropane, the used foam stabilizer being mainly of the non silicon type.
    Type: Grant
    Filed: March 2, 1990
    Date of Patent: July 21, 1992
    Assignee: Recticel
    Inventors: Bart Wallaeys, Eddie DuPrez
  • Patent number: 5128381
    Abstract: Disclosed herein is a polyurethane foam for cushioning materials. The polyurethane foam is formed by reacting a mixture of a polyol component, a polyisocyanate component and other optional components. The polyol component contains a mixed polyol which is composed of a low-hydroxyl-number polyol having a hydroxyl number of 30-80 and a high-hydroxyl-number polyol having a hydroxyl number of 350-600 and has an average hydroxyl number of 120-170. The mixture may additionally contain a plasticizer component containing at least one kind of plasticizer having one active hydrogen atom per molecule.
    Type: Grant
    Filed: December 27, 1990
    Date of Patent: July 7, 1992
    Assignees: Achilles Corporation, Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Kouichi Tane, Katsuya Motojima, Yasumasa Sawachika, Tetsuya Oda, Yoshio Sakaguchi
  • Patent number: 5122546
    Abstract: A slurry is produced by adding to a polyimide precursor comprising carboxylic and diamine components at least one foam-enhancing polar, protic additive of the formula ROH, where R is hydrogen, or C.sub.1 to C.sub.12 linear or branched alkyl or cycloalkyl, affording a slurry. The slurry is then brought to a temperature in the range of about 40.degree. C. to about 105.degree. C., producing a homogeneous, transparent solution, opaque suspension, or melt. When heated to a higher temperature the melt foams and cures.
    Type: Grant
    Filed: February 8, 1991
    Date of Patent: June 16, 1992
    Assignee: Ethyl Corporation
    Inventor: Raymond Lee
  • Patent number: 5112879
    Abstract: A method for the preparation of polymeric foams which comprises reacting an organic polyisocyanate with a cyclic carbonate having at least one isocyanate-reactive substituent attached to the carbonate ring.
    Type: Grant
    Filed: September 19, 1990
    Date of Patent: May 12, 1992
    Assignee: Imperial Chemical Industries PLC
    Inventors: David Randall, Rik De Vos
  • Patent number: 5096932
    Abstract: Polyimide foam of desired density is produced by adding to a polyimide precursor comprising carboxylic and diamine components at least one foam-enhancing polar, protic additive of the formula ROH, where R is hydrogen, or C.sub.1 to C.sub.12 linear or branched alkyl or cycloalkyl, unsubstituted or substituted with halo, aryl, alkoxy or hydroxy, and heating the resultant slurry to a temperature that does not exceed about 105.degree. C. to form a homogeneous melt. When heated to a higher temperature the melt foams and cures. The density of the foam is affected by the amount of foam-enhancing additive which is utilized.
    Type: Grant
    Filed: August 31, 1990
    Date of Patent: March 17, 1992
    Assignee: Ethyl Corporation
    Inventors: James R. Barringer, H. Eugene Broemmelsiek, Carroll W. Lanier, Raymond Lee
  • Patent number: 5079270
    Abstract: A method and composition are disclosed for the preparation of polyurethane and polyurea molded articles, particularly according to the RIM method, in which liquid polybutadiene with an average molecular weight of 1,500 to 6,000 is used as an internal release agent in an amount of 0.5 to 5% by weight, based on the reaction formulation. The release agent is highly effective and demolded products which contain this release agent can be painted over without formation of surface defects.
    Type: Grant
    Filed: October 23, 1989
    Date of Patent: January 7, 1992
    Assignee: Th. Goldschmidt AG
    Inventors: Georg Burkhart, Hans-Joachim Kollmeier, Helmut Lammerting
  • Patent number: 5077318
    Abstract: Polyimide foam of desired density is produced by adding to a polyimide precursor comprising carboxylic and diamine components at least one foam-enhancing polar, protic additive of the formula ROH, where R is hydrogen, or C.sub.1 to C.sub.12 linear or branched alkyl or cycloalkyl, unsubstituted or substituted with halo, aryl, alkoxy or hydroxy, and heating the resultant slurry to a temperature that does not exceed about 105.degree. C. to form a homogeneous melt. When heated to a higher temperature the melt foams and cures. The density of the foam is affected by the amount of foam-enhancing additive which is utilized.
    Type: Grant
    Filed: June 24, 1991
    Date of Patent: December 31, 1991
    Assignee: Ethyl Corporation
    Inventors: James R. Barringer, H. Eugene Broemmelsiek, Carroll W. Lanier, Raymond Lee
  • Patent number: 5077321
    Abstract: A process for the preparation of polyurethane substances in any desired form by reaction ofa) polyisocyanates withb) compounds comprising at least two hydrogen atoms that are reactive towards isocyanates, in the presence ofc) catalysts known per se andd) specific stabilizer systems,wherein there is used as component d) a stabilizer system comprising at least two compounds of at least two structurally different stabilizer types of formulae (1), (2), (3) and (4), in which formula (1) represents formulae (1a), (1b), (1c), (1d) or (1e) ##STR1## and the other formulae (2), (3) and (4) are as follows: ##STR2## wherein R.sub.1 each independently of the other is C.sub.1 -C.sub.4 alkyl, R.sub.2 and R.sub.5 each independently of the other are C.sub.1 -C.sub.18 alkyl, C.sub.5 -C.sub.7 cycloalkyl, benzyl, phenyl or a group of the formula --CH.sub.2 COO--C.sub.6 -C.sub.18 alkyl, R.sub.3 is --H or --CH.sub.3, and R.sub.4 is C.sub.1 -C.sub.12 alkyl, R.sub.6 and R.sub.8 each independently of the other are C.sub.1 -C.sub.
    Type: Grant
    Filed: June 3, 1991
    Date of Patent: December 31, 1991
    Assignee: Ciba-Geigy Corporation
    Inventor: Peter Michaelis
  • Patent number: 5071885
    Abstract: A method is provided for preparing a silicone foam having reduced density of about 5 to about 6 pounds per cubic foot, comprising the step of agitating a mixture of ingredients comprising (A) a silicone composition, comprising by weight: (1) 100 parts of a vinyl-terminated polydiorganosiloxane (2) about 0.5 to about 5 parts by weight of an aqueous buffer solution having a pH in the range of about 9 to about 10; and (3) about 25 to about 140 parts per million of a platinum catalyst; (B) about 2.5 to about 20 parts of a substantially linear hydride polysiloxane (C) about 0.1 to about 15 parts of a cyclic hydride polysiloxane; and (D) about 0.1 to about 5 parts of a hydroxyl source selected from the group consisting of water, organic alcohol, or a mixture of the foregoing.
    Type: Grant
    Filed: August 20, 1990
    Date of Patent: December 10, 1991
    Assignee: General Electric Company
    Inventor: Donald S. Johnson
  • Patent number: 5025039
    Abstract: The present invention is directed to a process for the production of molded polyurethane foams having a compact surface and a density of at least 250 kg/m.sup.3 by the in-mold foaming of a reaction mixture containinga) a polyisocyanate component containing at least one aromatic polyisocyanate,b) an isocyanate-reactive component containing at least one organic compound having at least two isocyanate-reactive groups andc) a blowing agentat an isocyanate index of 75 to 1500, characterized in that organic carboxylic acids are used as blowing agents c), optionally in addition to other chemical or physical blowing agents.The present invention is also directed to the molded polyurethane foams obtained by this process.
    Type: Grant
    Filed: November 22, 1989
    Date of Patent: June 18, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Alfred Neuhaus, Otto Ganster, Richard Kopp
  • Patent number: 5019600
    Abstract: The present invention is directed to a novel mold release agent, a composition containing the mold release, and a method of use of the mold release. The mold release broadly comprises a zinc carboxylate and a specific salt of an amidine-group containing compound.
    Type: Grant
    Filed: September 12, 1989
    Date of Patent: May 28, 1991
    Assignee: Mobay Corporation
    Inventor: John E. Dewhurst
  • Patent number: 5017624
    Abstract: A method is provided for preparing a silicone foam having reduced density of about 5 to about 6 pounds per cubic foot, comprising the step of agitating a mixture of ingredients comprising (A) a silicon composition, comprising by weight: (1) 100 parts of a vinyl-terminated polydiorganosiloxane (2) about 0.5 to about 5 parts by weight of an aqueous buffer solution having a pH in the range of about 9 to about 10; and (3) about 25 to about 140 parts per million of a platinum catalyst; (8) about 2.5 to about 20 parts of a substantially linear hydride polysiloxane (C) about 0.1 to about 15 parts of a cyclic hydride polysiloxane; and (D) about 0.1 to about 5 parts of a hydroxyl source selected from the group consisting of water, organic alcohol, or a mixture of the foregoing.
    Type: Grant
    Filed: October 15, 1990
    Date of Patent: May 21, 1991
    Assignee: General Electric Company
    Inventor: Donald S. Johnson
  • Patent number: 5011865
    Abstract: A method is provided for preparing a silicon foam having reduced density of about 5 to about 6 pounds per cubic foot, comprising the step of agitating a mixture of ingredients comprising (A) a silicon composition, comprising by weight: (1) 100 parts of a vinyl-terminated polydiorganosiloxane (2) about 0.5 to about 5 parts by weight of an aqueous buffer solution having a pH in the range of about 9 to about 10; and (3) about 25 to about 140 parts per million of a platinum catalyst; (B) about 2.5 to about 20 parts of a substantially linear hydride polysiloxane (C) about 0.1 to about 15 parts of a cyclic hydride polysiloxane; and (D) about 0.1 to about 5 parts of a hydroxyl source selected from the group consisting of water, organic alcohol, or a mixture of the foregoing.
    Type: Grant
    Filed: April 2, 1990
    Date of Patent: April 30, 1991
    Assignee: General Electric Company
    Inventor: Donald S. Johnson
  • Patent number: 4994501
    Abstract: A hole repair method and composition suitable for mufflers, and engine exhaust systems, and any situation where high temperature resistance is needed. A putty like mass of polyimide resin and from 28% to 35% of low boiling alcohol is used to fill the hole, then foamed by heating into a mechanically seated and adherent plug which is high temperature resistant and securely in place.
    Type: Grant
    Filed: April 13, 1990
    Date of Patent: February 19, 1991
    Assignee: Thermo-Foam, Inc.
    Inventor: Garson P. Shulman
  • Patent number: 4983641
    Abstract: A method is provided for controlling the cure time of a platinum-catalyzed addition cured silicone foamable composition, comprising the step of adding to the composition an aqueous buffer solution having a pH of about 2 to about 10, wherein cure time is increased if the pH of the buffer solution is higher than the pH of the composition prior to the addition thereto of the buffer solution and decreased if the pH of the buffer solution is lower than the pH of the composition prior to the addition thereto of the buffer solution.
    Type: Grant
    Filed: April 2, 1990
    Date of Patent: January 8, 1991
    Assignee: General Electric Company
    Inventors: David C. Gross, Donald S. Johnson, Connie H. Shannon
  • Patent number: 4980385
    Abstract: A molded flexible polyurethane composition having improved polycarbonate compatibility comprising an organic polyisocyanate, a polyol and reactive tertiary amine catalyst. This catalyst contains at least one active hydrogen and/or hydroxyl group in its structure. Another embodiment of this invention relates to a molded flexible polyurethane composition having improved polycarbonate compatibility comprising an organic polyisocyanate, a polyol, a non-reactive tertiary amine catalyst and, an amine scavenger composition which may or may not also contain reactive tertiary amine catalysts. Also disclosed are processes for making said molded flexible polyurethane compositions having improved polycarbonate compatibility.
    Type: Grant
    Filed: May 22, 1989
    Date of Patent: December 25, 1990
    Assignee: BASF Corporation
    Inventors: Michael Scarpati, Mark J. Hughes
  • Patent number: 4962133
    Abstract: A precipitation polymerization process for the production of a macroporous cross-linked copolymer in which there is added to a reactor equipped with a stirrer, at least one monounsaturated monomer and at least one polyunsaturated monomer, dissolving an inorganic polymerization reaction initiator in a homogeneous minimum-boiling binary azeotrope including a solvent and water, and conducting the polymerization in the azeotrope.
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: October 9, 1990
    Assignee: Dow Corning Corporation
    Inventors: Richard C. Chromecek, Milan F. Sojka, William L. Klein, Walter J. Carmody
  • Patent number: 4933375
    Abstract: A hole repair method and composition suitable for mufflers, and engine exhaust systems, and any situation where high temperature resistance is needed. A putty like mass of polyimide resin and from 28% to 35% of low boiling alcohol is used to fill the hole, then foamed by heating into a mechnically seated and adherent plug which is high temperature resistant and securely in place.
    Type: Grant
    Filed: December 7, 1988
    Date of Patent: June 12, 1990
    Assignee: Thermo-Foam, Inc.
    Inventor: Garson P. Shulman
  • Patent number: 4933374
    Abstract: Polyether polyols and polyurethane foams are stabilized by including therein a stabilizer composition of 2,6-di-tert-butyl-4-sec-butylphenol and a reaction product of diisobutylene, styrene and diphenylamine wherein the ratio of the phenol to the reaction product is about 1:5 to 5:1. The stabilizer composition may further include trihydrocarbyl phosphite to stabilize the color of same.
    Type: Grant
    Filed: May 24, 1989
    Date of Patent: June 12, 1990
    Assignee: R. T. Vanderbilt Company, Inc.
    Inventors: Richard A. Suhoza, Bruce R. Garney
  • Patent number: 4914137
    Abstract: This invention relates to the stabilization of polyurethane foam by using a combination of a phenothiazine with at least a co-stabilizing effective amount of a compound selected from the group consisting of certain dithiocarbamates, thiuramsulfides, mercaptobenzothiazole, phosphites, phosphonites, phenolic antioxidants, pentaerythritol-tetrakis(beta-laurylthiopropionate), 4,4'-thiobis(2-t-butyl-5-methylphenol) and mixtures thereof.
    Type: Grant
    Filed: August 11, 1988
    Date of Patent: April 3, 1990
    Assignee: Uniroyal Chemical Company, Inc.
    Inventors: Bernard C. Smith, Frank Powell, John F. Sierakowski
  • Patent number: 4886838
    Abstract: The present invention is directed to a novel mold release agent, a composition containing the mold release, and a method of use of the mold release. The mold release broadly comprises a zinc carboxylate and a specific salt of an amidine-group containing compound.
    Type: Grant
    Filed: August 31, 1988
    Date of Patent: December 12, 1989
    Assignee: Mobay Corporation
    Inventor: John E. Dewhurst
  • Patent number: 4883824
    Abstract: The invention relates to the preparation of closed cell phenolic resin foams produced from compositions of phenol-aldehyde resole resins, and the foam products thus prepared. More particularly the present invention relates to the preparation of phenolic resin foams by a method employing a novel modified phenolic foam catalyst. The invention also relates to these modified phenolic foam catalysts which include an aromatic sulphonic acid and resorcinol.
    Type: Grant
    Filed: February 9, 1989
    Date of Patent: November 28, 1989
    Assignee: Fiberglas Canada, Inc.
    Inventors: Paul J. Meunier, James Lunt, Edwin J. MacPherson
  • Patent number: 4879317
    Abstract: A method is provided for reducing the density of silicone foam resulting from the generation of hydrogen gas by employing a hydride polysiloxane in the form of a mixture of linear hydride polysiloxane and cyclic hydride polysiloxane. Aqueous methanol is also found to be an effective density-reducing agent.
    Type: Grant
    Filed: January 24, 1989
    Date of Patent: November 7, 1989
    Assignee: General Electric Company
    Inventors: Kennith A. Smith, Connie L. Haig
  • Patent number: 4871781
    Abstract: The invention relates to compositions comprising (A) polydiorganosiloxanes containing vinyl groups, (B) polyorganohydrogensiloxanes, (C) platinum catalysts, and (D) a saturated polyhydric alcohol having at least two hydroxyl groups per molecule, which can be cured at temperatures of from room temperature to over 100.degree. C. by the addition of the Si-bonded H atoms in the polyorganohydrogensiloxane (B) to the vinyl groups in the polydiorganosiloxanes (A) with the aid of the platinum catalysts (C), to form elastomeric foams. The density and type of pores may be controlled by compound (D) containing hydroxyl groups as a "blowing agent".
    Type: Grant
    Filed: April 15, 1988
    Date of Patent: October 3, 1989
    Assignee: Wacker-Chemie GmbH
    Inventor: Carlos Weise
  • Patent number: 4843103
    Abstract: Foamed resinous products having excellent fire resistance, high thermal insulation and good resistance to heat are obtained at temperatures as low as room temperature and without the need for an added blowing agent by forming a mixture of a phenolic resole having a specified reactivity, an acid hardener for the resole and, uniformly dispersed through the mixture of resole and hardener, at least 20% by weight of a finely divided inert and insoluble particulate solid; products capable of being employed as wood-substitutes are obtained when a dihydric compound is included in the mixture and the solid is talc, fly ash and/or a hydraulic cement.
    Type: Grant
    Filed: April 2, 1986
    Date of Patent: June 27, 1989
    Assignee: Company "A" (Foam) Limited
    Inventors: Aldino Albertelli, Lothar M. Hohmann, Anthony N. Curtis
  • Patent number: 4837245
    Abstract: This invention relates to a process for the preparation of non-cellular or cellular polyurethane elastomers by the reaction of(a) an organic polyisocyanate, preferably in the form of NCO groups containing prepolymers and/or modified urethane group containing organic polyisocyanates with(b) a higher molecular weight compound having at least two reactive hydrogen atoms,(c) a polyester polyol containing tin and/or titanium compounds as catalysts, and optionally(d) a chain extending agent and/or crosslinking agent in the presence of(e) blowing agents,(f) auxiliaries and/or additiveswhereby from 0.1 to 10 parts by weight, based on 100 parts by weight of the (b) component, of a polyester polyol is used as a catalyst, which is prepared by the polycondensation of organic polycarboxylic acid with multivalent alcohols in the presence of from 0.002 to 5 weight percent, based on the weight of the polycondensation mixture, of a titanium and/or tin compound used as a catalyst at temperatures from 150.degree. to 200.degree.
    Type: Grant
    Filed: November 4, 1987
    Date of Patent: June 6, 1989
    Assignee: BASF Aktiengesellschaft
    Inventors: Joachim Streu, Wolfgang Straehle, Gerhard Ramlow
  • Patent number: 4820742
    Abstract: A method and apparatus for continuously manufacturing water absorbing resin. A mixed monomer solution is stored in a storage vessel and a polymerization initiator stored in an initiator storage vessel. The monomer solution is fed by gravity or otherwise through a conduit to a lower position (below the liquid surface) of a reaction chamber of a reaction vessel at a rate of, for example, 4 gallons per minute. Simultaneously, the polymerization initiator is fed at a rate of, for example, 0.2 gallons per minute by gravity or otherwise through a conduit to an opposite side of the reaction chamber, again at a lower portion (below a continuously maintained liquid level) to begin polymerization. The reaction product forms from an upper surface of the reactant mixture (mixed monomer solution plus initiator) and travels upwardly through a truncated frustoconical cone shaped upper portion of the reaction chamber as a solid resin.
    Type: Grant
    Filed: December 29, 1986
    Date of Patent: April 11, 1989
    Assignee: American Colloid Company
    Inventors: William Alexander, Maynard Teppo
  • Patent number: 4816492
    Abstract: This invention is directed to a novel translucent polymerized panel which can be used as is or be foamed or reinforced with glass fibre or other types of fibre, or reinforcing materials. These panels have good light transmitting, weathering and insulating qualities and do not yellow upon prolonged exposure to ultraviolet light. The invention is directed to a process of producing an acrylic product which is susceptible to foaming upon the application of heat, if a blowing agent is incorporated therein, or can be used with glass fibre reinforcement as a laminating panel. The process comprises: mixing an acrylate or methacrylate monomer, a vinyl monomer, vinyl acetate monomer, polyvinyl chloride monomer, or co-monomers thereof, a polymerization initiator, a molecular weight controlling agent, a catalyst and a metal substitute organic initiator, and polymerizing the mixture to produce a polymerized solid clear product.
    Type: Grant
    Filed: May 19, 1987
    Date of Patent: March 28, 1989
    Inventors: Rolf M. Schiller, Jost H. Schiller
  • Patent number: 4814360
    Abstract: High resiliency polyurethane foams are typically prepared by reaction of polyols blends comprising conventional and polymer containing polyols with aromatic polyisocyanates. Improved physical properties such as tensile strength, tear strength, and elongation of these foams can be achieved by incorporating 0.5 to 3.0 parts 2,3-dibromopropanol into the foam formulation.
    Type: Grant
    Filed: October 26, 1987
    Date of Patent: March 21, 1989
    Assignee: BASF Corporation
    Inventor: Robert L. McBrayer
  • Patent number: 4794126
    Abstract: Polyurethane foams containing halogenated phosphorus-based flame retardants are protected from scorching by the incorporation therein of an anti-scorch package which comprises a diaryl arylenediamine, the reaction product of a diarylamine and a lower alkyl ketone, and a hindered phenol.
    Type: Grant
    Filed: May 2, 1988
    Date of Patent: December 27, 1988
    Assignee: Akzo America Inc.
    Inventors: Gerald Fesman, Barry Jacobs, Barbara Williams
  • Patent number: 4791146
    Abstract: An open celled, dimensionally stable, flexible urethane foam and method of preparing such foam, which method comprises adding a cell opening dimensionally stabilizing amount of an additive to a foamable urethane composition, and thereafter foaming the composition containing such additive to provide a dimensionally stable, flexible urethane foam product. The additive mixture employed comprises an ester reaction product of a long chain acid with polyethylene or polypropylene glycols and/or contains free acid to provide for a desired acid value. The dimensionally stable, flexible foam product produced is particularly useful in the automotive industry as a flexible molded-type foam for use as cushions and seats.
    Type: Grant
    Filed: April 29, 1988
    Date of Patent: December 13, 1988
    Inventor: Eugene J. Tylenda
  • Patent number: 4783489
    Abstract: The first invention relates to a novel manufacturing process of mold containing continuous holes and used for filter materials, gas dispersive materials, and mold materials. By this invention, the epoxy resin mixture including an epoxy compound having one or more epoxy groups in each molecule, a hardener which reacts with and hardens the epoxy compound, emulsifiers, water or water-surface active agent, and fillers respectively is used as the molding material. As the emulsifier, at least two kinds of three different kinds of nonionic emulsifiers of 4-8, 8-17, and 11-15.6 HLB respectively are used together. This is the primary feature of the invention and no molding materials including such emulsifiers are known so far. The molding material is cured to a desired shape to prepare a mold containing continuous holes and for molding, conventional methods such as hardening after casting, for example, are adopted.The second invention relates to a novel casting mold suitable be for slip discharge casting.
    Type: Grant
    Filed: February 6, 1986
    Date of Patent: November 8, 1988
    Assignees: Inax Corp., IN Technical Lab Co., Ltd.
    Inventors: Saihachi Inoue, Shigeru Kiriyama, Kazuhiro Imada
  • Patent number: 4774268
    Abstract: Flame resistant foams and other compositions containing polyurethane and/or polyisocyanurate groups are prepared by reacting an organic polyisocyanate with a polyol in the presence of flame retardants, catalysts, blowing agents as well as optionally chain extenders, cross-linkers auxiliaries and additives. The flame retardents comprise a phenol or melamine formaldehyde condensate, pentaerythritol as well as ammonium phosphate and preferably in addition dicyandiamide.
    Type: Grant
    Filed: January 20, 1988
    Date of Patent: September 27, 1988
    Assignee: Dr. Wolman GmbH
    Inventors: Hans-Norbert Marx, Wendelin Hettler
  • Patent number: 4767794
    Abstract: Amine compounds are added to foamable elastomeric silicone foam to reduce foam density.
    Type: Grant
    Filed: October 26, 1987
    Date of Patent: August 30, 1988
    Assignee: General Electric Company
    Inventors: Frank J. Modic, Richard A. Striker, Wayne L. Delker, Richard K. Sammel
  • Patent number: 4751253
    Abstract: An open celled, dimensionally stable, flexible urethane foam and method of preparing such foam, which method comprises adding a cell opening dimensionally stabilizing amount of an additive to a foamable urethane composition, and thereafter foaming the composition containing such additive to provide a dimensionally stable, flexible urethane foam product. The additive mixture employed comprises an ester reaction product of a long chain acid with polyethylene or polypropylene glycols and/or contains free acid to provide for a desired acid value. The dimensionally stable, flexible foam product produced is particularly useful in the automotive industry as a flexible molded-type foam for use as cushions and seats.
    Type: Grant
    Filed: October 6, 1986
    Date of Patent: June 14, 1988
    Inventor: Eugene J. Tylenda
  • Patent number: 4720510
    Abstract: This invention relates to a process for producing phenolformaldehyde foams, also known as phenolic foams, of improved properties. The inventive feature resides in using a controlled combination of the various components in the curing reaction mixture and in controlling the temperature within the mass of the curing mixture. The process is applicable to production of block or laminated foams. Phenolic foams find increasing use in building applications where their thermal insulation and fire resistant properties are of value.
    Type: Grant
    Filed: May 21, 1985
    Date of Patent: January 19, 1988
    Assignee: BP Chemicals Limited
    Inventors: Gerald C. Marks, Kenneth C. Thomas, Per I. Quist
  • Patent number: 4715746
    Abstract: The present invention relates to a method of strengthening geological formations in underground workings or mines by introducing reaction mixtures containing a polyisocyanate component (a), a polyol component (b) and optionally auxiliary agents and additives (c) into the formation which is required to be strengthened and reacting the mixtures to form polyurethanes, wherein polyol component (b) contains mixtures of (i) organic polyhydroxyl compounds having a hydroxyl number of about 100 to 800 and (ii) monovalent alcohols having a molecular weight of 32 to about 600, component (ii) being present in an amount of about 0.01 to 20% by weight, based on the total quantity of component (b).
    Type: Grant
    Filed: April 15, 1987
    Date of Patent: December 29, 1987
    Assignees: Bergwerksverband GmbH, Bayer Aktiengesellschaft
    Inventors: Max Mann, Manfred Kapps
  • Patent number: 4704408
    Abstract: A process for manufacturing foamed silicone compositions by foaming a cross-linkable composition which comprises:(a) 100 parts by weight of a vinyl-containing polysiloxane containing 0.0002 to 3% by weight of vinyl groups and a viscosity of from 0.1 to 1,000 Pascal-seconds at 25.degree. C.,(b) up to 10 parts by weight of a silanol-containing silicon compound with a viscosity from 0.01 to 10 Pascal-seconds at 25.degree. C.,(c) up to 200 parts by weight of filler,(d) 1 to 50 parts by weight of a polysiloxane with a viscosity of 0.005 to 0.1 Pascal-seconds at 25.degree. C., and(e) a platinum catalyst, is characterized by foaming the cross-linkable composition with a substance containing hydroxyl groups at temperatures of 50.degree. to 150.degree. C.
    Type: Grant
    Filed: November 20, 1985
    Date of Patent: November 3, 1987
    Assignee: Bayer Aktiengesellschaft
    Inventors: Wolfgang Krug, Gottfried Knispel, Dieter Wrobel
  • Patent number: 4699931
    Abstract: Oxazolidone-containing isocyanurate foams characterized by thermal stability at a temperature of about 140.degree. C. or higher. These foams are produced by reacting at least one polyisocyanate with at least one polyepoxide in the presence of catalyst, surfactant, and blowing agent.
    Type: Grant
    Filed: April 25, 1986
    Date of Patent: October 13, 1987
    Assignee: Olin Corporation
    Inventors: Stephen Fuzesi, Robert W. Brown