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: 5725815
    Abstract: The process of controlling foam in a foam-generating system by adding to the system a foam-inhibiting effective amount of a block copolymer containing alkylene oxide units obtained by reacting a homopolymer or copolymer of alkylene oxides with a diisocyanate or a dicarboxylic acid derivative containing 2 to 44 carbon atoms.
    Type: Grant
    Filed: November 9, 1995
    Date of Patent: March 10, 1998
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Horst-Werner Wollenweber, Thomas Moeller, Hans-Juergen Sladek, Heinz-Guenther Schulte, Wolfgang Gress, Ulrich Eicken, Herbert Fischer, Christian De Haut
  • Patent number: 5710190
    Abstract: The invention provides a biodegradable thermoplastic composition made of soy protein, a plasticizing agent, a foaming agent, and water, that can be molded into biodegradable articles that have a foamed structure and are water-resistant with a high level of physical strength and/or thermal insulating properties.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: January 20, 1998
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: Jay-lin Jane, Su She Zhang
  • Patent number: 5691392
    Abstract: A composition comprising a particulate dispersion of from 50% to 98.9% by weight of a siloxane-polyoxyalkylene copolymer surfactant, from 1% to 49.9% by weight of a nonionic organic surfactant other than the siloxane-polyoxyalkylene copolymer surfactant and from 0.1% to 25% by weight, based on the total weight of the composition, of a particulate material having a particle size of less than 20 microns, is described. A method of preparing such a composition, and polyurethane and polyisocyanurate foams containing such a composition are also described. The nonionic organic surfactant is preferably an ethoxylated nonylphenol. The particulate material is preferably a hydrophobic precipitated silica. The composition of the invention is useful as an additive in the preparation of rigid polyurethane and polyisocyanurate foams.
    Type: Grant
    Filed: February 5, 1997
    Date of Patent: November 25, 1997
    Assignee: PPG Industries, Inc.
    Inventors: Michael O. Okoroafor, William H. McDonald, Alan E. Wang
  • Patent number: 5690855
    Abstract: A polyol blend is disclosed for making cellular polyurethane foam products in the absence of halogenated hydrocarbon blowing agents. The products have good insulating performance, good compressive strength, and excellent dimensional stability. The blend comprises first and second polyols and is suitable for one-shot and two component reaction systems. The first polyol is the reaction product of one or more alkylene oxides and a compound selected from the group consisting of aliphatic diols, triols, pentaerythritol, water in an amount sufficient to form a diol upon reaction with alkylene oxide, and mixtures thereof.
    Type: Grant
    Filed: January 11, 1994
    Date of Patent: November 25, 1997
    Assignee: Sealed Air Corporation
    Inventors: Charles B. Nichols, Michael R. Sandner, Richard R. Zielinski, II
  • Patent number: 5683527
    Abstract: A foamable, curable organosiloxane composition comprising an alkenyl-functional polyorganosiloxane, an organohydrogensiloxane, a blowing agent, a platinum catalyst and an adhesion promoter comprising an epoxy-functional compound, a hydroxyl-functional compound, a tetraalkylorthosilicate, an organotitanate and an aluminum or zirconium compound.
    Type: Grant
    Filed: December 30, 1996
    Date of Patent: November 4, 1997
    Assignee: Dow Corning Corporation
    Inventors: Gloria Lynne Angell, Michael Andrew Lutz
  • Patent number: 5679718
    Abstract: Disclosed is an evacuated and unevacuated microcellular foam containing an infrared attenuating agent (IAA). The evacuated foam has an average cell size of about 70 micrometers or less. The unevacuated foam has an average cell size of 1.0 micrometers or less. The IAA provide a greater proportional reduction in foam thermal conductivity in these foams than in foams of larger cell size. Further disclosed is a method of using the foams.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: October 21, 1997
    Assignee: The Dow Chemical Company
    Inventors: Kyung W. Suh, Michio Yamada, Creston D. Shmidt, Daniel D. Imeokparia
  • Patent number: 5674918
    Abstract: Polyurethane, polyisocyanurate and polyurea polymers, particularly foamed polymers can be prepared from formulations including non-silicone polyether surfactants. The non-silicone polyether surfactants can be polyethers having from about 10 to about 90 weight percent oxyethylene units and from about 10 to about 90 weight percent oxyalkylene units having at least 4 carbons. The non-silicone polyether surfactants can be used to prepare foams having properties substantially similar to foams prepared with conventional silicone based surfactants.
    Type: Grant
    Filed: August 22, 1996
    Date of Patent: October 7, 1997
    Assignee: The Dow Chemical Company
    Inventors: Debkumar Bhattacharjee, Jerram B. Nichols, Warren A. Kaplan, Vaughn M. Nace
  • Patent number: 5652276
    Abstract: A foaming resin composition consisting essentially of (A) an organic compound having a carbon-carbon double bond, (B) a compound having an SiH group, and (C) a compound having an OH group is foamed and cured at room temperature or under heat at relatively low temperatures, to obtain hard, semi-hard or soft plastic foam having good weather resistance and good compatibility with coating compositions and adhesives.
    Type: Grant
    Filed: September 5, 1996
    Date of Patent: July 29, 1997
    Assignee: Kanegafuchi Chemical Industry Co., Ltd.
    Inventors: Hiroshi Ando, Kensuke Kondo, Naoaki Nakanishi, Hiroshi Ito, Shigeki Hamaguchi, Kazuya Yonezawa
  • Patent number: 5624969
    Abstract: In a process for producing rigid foams based on isocyanate, the blowing agent used is a mixture of at least one low-boiling hydrocarbon having from 3 to 7 carbon atoms, low molecular weight monohydric alcohols containing primary or secondary hydroxyl groups and having from 1 to 4 carbon atoms, and, if desired, the carbon dioxide formed from water and isocyanate. The rigid foams can be used as insulation material.
    Type: Grant
    Filed: July 10, 1996
    Date of Patent: April 29, 1997
    Assignee: BASF Aktiengesellschaft
    Inventors: Holger Seifert, Renate Hempel, Gottfried Knorr, Udo Rotermund
  • Patent number: 5624966
    Abstract: The present invention relates to water-blown integral skin polyurethane foam compositions, molded polyurethane articles, a process of preparing said articles, and an isocyanate composition for use therein. In particular, the invention relates to water-blown integral skin molded polyurethane articles having particularly advantageous physical properties, and compositions useful for producing such articles.In particular, the invention provides a polyurethane composition which has an isocyanate component (a) an isocyanate reactive component (b), a blowing agent comprising water (c), a polyether (d) selected from the group consisting of polytetrahydrofuran and polyethylene glycol having a number average molecular weight of from 200 to 2000 and optionally, one or more additives (e) from the group consisting of catalysts, chain extenders, oxo alcohols, and mixtures thereof.
    Type: Grant
    Filed: October 30, 1995
    Date of Patent: April 29, 1997
    Assignee: BASF Corporation
    Inventors: Thirumurti Narayan, Valeri L. Voloppi
  • Patent number: 5614567
    Abstract: A method of preparing a self-releasing silicone foam in which a composition containing a siloxane polymer, an organohydrogensiloxane, a platinum catalyst, a polyol, and preferably a monofunctional alcohol is foamed, cured, and then post cured at an elevated temperature. A method of reducing the cycle time of preparing a cured silicone foam in which the above composition is applied to a plastic substrate, foamed, cured, post cured at an elevated temperature and then separated from the plastic substrate.
    Type: Grant
    Filed: January 22, 1996
    Date of Patent: March 25, 1997
    Assignee: Dow Corning Corporation
    Inventors: Jack R. Harper, Brian P. Loiselle, William R. Nicholson, Lawrence J. Rapson
  • Patent number: 5600019
    Abstract: Polyurethane, polyisocyanurate and polyurea polymers, particularly foamed polymers can be prepared from formulations including non-silicone polyether surfactants. The non-silicone polyether surfactants can be polyethers having from about 10 to about 90 weight percent oxyethylene units and from about 10 to about 90 weight percent oxyalkylene units having at least 4 carbons. The non-silicone polyether surfactants can be used to prepare foams having properties substantially similar to foams prepared with conventional silicone based surfactants.
    Type: Grant
    Filed: November 23, 1994
    Date of Patent: February 4, 1997
    Assignee: The Dow Chemical Company
    Inventors: Debkumar Bhattacharjee, Jerram B. Nichols, Warren A. Kaplan, Vaughn M. Nace
  • Patent number: 5580906
    Abstract: Azeotropic or azeotrope-like compositions of effective amounts of 1,1,1,2,3,4,4,5,5,5-decafluoropentane, heptane and an alcohol such as methanol, ethanol, n-propanol or isopropanol, to form an azeotropic or azeotrope-like composition are disclosed that are useful as cleaning agents, refrigerants, aerosol propellants, heat transfer media, gaseous dielectrics, fire extinguishing agents, expansion agents for polyolefins and polyurethanes and as power cycle working fluids.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: December 3, 1996
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Abid N. Merchant, Barbara H. Minor
  • Patent number: 5574073
    Abstract: What is disclosed herein relates to curable silicone compositions which provide high strength foams or elastomers. These foams or elastomers have high strength properties which are provided by a combination of non-resinous organopolysiloxanes as the base polymer. The high strength properties are better than the high strength properties of cured silicone compositions where only one non-resinous organopolysiloxane polymer type is employed. These compositions have the added benefit of being less expensive than resin based formulations.
    Type: Grant
    Filed: January 17, 1996
    Date of Patent: November 12, 1996
    Assignee: Dow Corning Corporation
    Inventors: Donnie R. Juen, William R. Nicholson, Lawrence J. Rapson
  • Patent number: 5571529
    Abstract: A polyurethane foam suitable for use as a wound-contact layer in a wound dressing is made by mixing 1 part by weight of an isocyanate-capped prepolymer having from 0.5 to 1.2 meq NCO groups/g with from 0.4 to 1.0 parts by weight of water in the presence of from 0.05 to 0.4 parts by weight of a C.sub.1 to C.sub.3 monohydric alcohol, and then drying the product. The monohydric alcohol is preferably methanol, and the isocyanate-capped prepolymer is preferably an isocyanate-capped ethyleneoxy/propyleneoxy copolymer.
    Type: Grant
    Filed: November 4, 1992
    Date of Patent: November 5, 1996
    Assignee: Johnson & Johnson Medical, Inc.
    Inventor: Catherine L. Cheong
  • Patent number: 5523332
    Abstract: There is now provided a polyisocyanate-based foam made by reacting an organic polyisocyanate with a polyol solution containing a C.sub.4 -C.sub.7 aliphatic and/or cycloaliphatic hydrocarbon as a blowing agent. The hydrocarbon blowing agent is soluble in the polyol solution having polyols with polyester linkages by using a reacted or unreacted compatibilizing agent represented by the formula: ##STR1## wherein R.sup.1 is preferentially OH, and R.sup.2 is a C.sub.6 -C.sub.24 aliphatic, branched or unbranched, hydrocarbon group.
    Type: Grant
    Filed: September 5, 1995
    Date of Patent: June 4, 1996
    Assignee: Basf Corporation
    Inventors: Thomas L. Fishback, Thomas B. Lee
  • Patent number: 5519068
    Abstract: There is provided a method of producing an open cell rigid polyurethane foam which comprises reacting a specified polyol mixture by use of water as the substantially sole blowing agent without the use of a volatile hlorofluorocarbon as a blowing agent. There is provided a further method of producing an open cell rigid polyurethane foam particularly suitable for use as a shock absorbing material which comprises reacting a specified polyol/monool mixture. Water is used in an amount of 0.5-5.5 parts by weight in relation to 100 parts by weight of the polyol mixture or polyol/monool mixture used.
    Type: Grant
    Filed: April 26, 1994
    Date of Patent: May 21, 1996
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Kazuo Okada, Yoshihiko Tairaka
  • Patent number: 5512602
    Abstract: A process for the preparation of polyurethane foams, preferably semirigid polyurethane foams, having an improved foam structure involves reactinga) organic and/or modified organic polyisocyanates withb) polyhydroxyl compounds containing at least 2 reactive hydrogen atoms andc) crosslinking agents which comprise at least one polyoxyalkylene-polyol having a mean functionality of from 3 to 8 and a hydroxyl number of from 200 to 1300 ppm and a content of alkali metal ions of from 150 to 1200 ppm,in the presence ofd) blowing agents,e) if desired catalysts,f) inorganic and/or organic acids as additives andg) if desired auxiliaries.
    Type: Grant
    Filed: March 11, 1994
    Date of Patent: April 30, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter Horn, Werner Hinz, Ludwig Jung
  • Patent number: 5512604
    Abstract: Novel porous copolymers are disclosed which can be used to prepare ion-exchange resins and polymeric adsorbents. The copolymers comprise a copolymer of at least one monovinylidene monomer and a crosslinking monomer and have a unique cellular pore structure. The cellular structure comprises a macroporous void phase which is dispersed within a continuous copolymer phase. The porous void phase comprises a plurality of cellular void spaces which are at least partially enclosed by walls of the continuous copolymer phase. Also disclosed are processes which can be used to prepare the porous copolymers, as well as ion-exchange resins and polymeric adsorbents using the porous copolymers.
    Type: Grant
    Filed: August 28, 1992
    Date of Patent: April 30, 1996
    Assignee: The Dow Chemical Company
    Inventor: Tom N. Demopolis
  • Patent number: 5504125
    Abstract: There is now provided a polyisocyanate-based foam made by reacting an organic polyisocyanate with a polyol solution containing a C.sub.4 -C.sub.7 aliphatic and/or cycloaliphatic hydrocarbon as a blowing agent. The hydrocarbon blowing agent is soluble in the polyol solution having polyols with polyester linkages by using a reacted or unreacted compatibilizing agent represented by the formula: ##STR1## wherein R.sup.1 is preferentially OH, and R.sup.2 is a C.sub.6 -C.sub.24 aliphatic, branched or unbranched, hydrocarbon group.
    Type: Grant
    Filed: September 5, 1995
    Date of Patent: April 2, 1996
    Assignee: BASF Corporation
    Inventors: Thomas L. Fishback, Thomas B. Lee
  • Patent number: 5489618
    Abstract: A process for preparing a polyurethane foam according to the one-shot foaming process by reactions between a polyisocyanate and an active hydrogen-containing component including water and an organic polyol wherein said reactions are conducted in the presence of a salt of a tertiary amine and a carboxylic acid having hydroxyl functionality.
    Type: Grant
    Filed: November 29, 1993
    Date of Patent: February 6, 1996
    Assignee: OSi Specialties, Inc.
    Inventor: Richard M. Gerkin
  • Patent number: 5478494
    Abstract: A polyol composition is provided which when reacted with an organic isocyanate, has good flow characteristics and makes a rigid polyurethane foam having good dimensional stability at low densities. The polyol compostion has a polyol component which must have present a polyoxyalkylene polyether polyol having an equivalent weight of 130 or less and a hydroxyl number of 400 or more, a polyoxyalkylene polyether polyol having an average functionality from 1.5 to 3.1 and a viscosity of less than 800 cP at 25.degree. C., and a polyoxyalkylene polyether polyol having an average functionality of greater than 3.1 and a viscosity of 5,000 cp or less at 25.degree. C. The polyol composition also has formic acid or a mixture of formic acid and water as blowing agents, and further contains a delayed action blow catalyst and a delayed action gel catalyst.
    Type: Grant
    Filed: September 22, 1993
    Date of Patent: December 26, 1995
    Assignee: BASF Corporation
    Inventors: Thomas B. Lee, Thomas L. Fishback, Curtis J. Reichel, Donald L. Christman
  • Patent number: 5470501
    Abstract: There is now provided a polyisocyanate-based foam made by an organic polyisocyanate with a polyol solution containing a C.sub.4 -C.sub.7 aliphatic and/or cycloaliphatic hydrocarbon as a blowing agent. The hydrocarbon blowing agent is soluble in the polyol solution having polyols with polyester linkages by using a reacted or unreacted compatibilizing agent represented by the formula: ##STR1## wherein R.sup.1 is preferentially OH, and R.sup.2 is a C.sub.6 -C.sub.24 aliphatic, branched or unbranched, hydrocarbon group.
    Type: Grant
    Filed: May 8, 1995
    Date of Patent: November 28, 1995
    Assignee: BASF Corporation
    Inventors: Thomas L. Fishback, Thomas B. Lee
  • Patent number: 5445879
    Abstract: The present invention is directed to an improved process for the preparation of composite bodies by back-foaming plastics sheets with a polyurethane reaction mixture. The improvement is in using certain hydroxycarboxylic acids present in the alkali salt form as the catalyst.
    Type: Grant
    Filed: December 1, 1994
    Date of Patent: August 29, 1995
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ulrich Liman, Dirk Wegener, Hartwig Grammes
  • Patent number: 5436274
    Abstract: Silicone foams having low density and small cell size are prepared by blending a mixture of at least one polyorganosiloxane having vinyl groups attached to silicon, at least one hydride polysiloxane, a mixture of at least one monohydroxyaliphatic compound and at least one dihydroxyaliphatic compound each of which contains at least 5 carbon atoms in an equivalent ratio in the range of about 1.5-4.0:1, water, a platinum group catalyst and a filler. Said mixture comprises at least about 5% of the combination of silica and silicon-containing compounds having a high proportion of Q units.
    Type: Grant
    Filed: September 30, 1994
    Date of Patent: July 25, 1995
    Assignee: General Electric Company
    Inventors: Chris A. Sumpter, Larry N. Lewis
  • Patent number: 5403655
    Abstract: Toughened thermosetting resins are disclosed comprising a thermosetting resin having a Tg of at least 150.degree. C., preferably 180.degree. C., and having dispersed substantially uniformly therethrough microspheres of a thermoplastic resin having a Tg of at least 150.degree. C., preferably 180.degree. C. It is preferred to use thermoplastic resins with functional groups on the surface thereof capable of bonding to an available group on the thermosetting resin. High performance structural composites made from such toughened resins are disclosed as well as the process of making such composites.
    Type: Grant
    Filed: October 5, 1994
    Date of Patent: April 4, 1995
    Assignee: Southwest Research Institute
    Inventors: Marvin L. Deviney, Joel J. Kampa
  • Patent number: 5373028
    Abstract: In a method of preparing a poly-urethane and/or -urea foam from a formulation including (a) a polyisocyanate, (b) an isocyanate-reactive component, and (c) a visible emissions producing component, wherein (a), (b) and (e) are reacted under reaction conditions sufficient to form a poly-urethane and/or -urea foam and the foam is then cooled, whereby visible emissions are emitted during cooling, an improvement comprising including in the formulation a visible emissions reducing agent, such that the amount of the visible emissions is reduced as compared with the amount emitted by a foam prepared from a formulation which does not contain the visible emissions reducing agent but which is otherwise substantially similar. Foams prepared therefrom exhibit reduction in visible emissions during the cure period, which is particularly evident when the foams are mechanically cooled. They also exhibit generally good physical properties.
    Type: Grant
    Filed: October 15, 1993
    Date of Patent: December 13, 1994
    Assignee: The Dow Chemical Company
    Inventors: Carl D. McAfee, Richard G. Skorpenske, Don H. Ridgway, Stephen K. Lewis, Eugene P. Wiltz, Jr.
  • Patent number: 5350777
    Abstract: A method of producing an open cell rigid polyurethane foam which comprises reacting a polyol with a polymethylene polyphenyl polyisocyanate prepolymer with a monool exemplified by diethylene glycol monomethyl ether by use of a substitute such as 1,1-dichloro-1-fluoroethane or methylene chloride as a volatile blowing agent, or a mixture of the volatile blowing agent with water, for trichlorofluoromethane as a blowing agent in the presence of a catalyst, a foam stabilizer and a cell opening agent. The resultant open cell rigid polyurethane foam has a cell size of about 200-250 microns, and is suitable for use, for example, as a core material in a vacuum heat insulating material. The foam may be enclosed in a container under a vacuum of 0.1-0.01 mmHg readily attainable to provide a vacuum heat insulating material of a high heat insulating performance.
    Type: Grant
    Filed: July 23, 1993
    Date of Patent: September 27, 1994
    Assignees: Matsushita Refrigeration Company, Takeda Chemical Industries, Ltd.
    Inventors: Kiyohiro Yuge, Hitoshi Muramatsu, Yasuto Masuda, Kazutaka Uekado, Yasuaki Tanimoto
  • Patent number: 5346928
    Abstract: A process is provided for the preparation of rigid forms which comprises the step of reacting an organic polyisocyanate with an isocyanate-reactive material in the presence of a blowing promotor being an isocyanate-reactive cyclic compound of formula: ##STR1## wherein Y is O or NR.sup.1 wherein each R.sup.1 independently is a lower alkyl radical of C.sub.1 -C.sub.6 or a lower alkyl radical substituted with an isocyanate-reactive group;each R independently is hydrogen, a lower alkyl radical of C.sub.1 -C.sub.6 or (CH.sub.2).sub.m --X wherein X is an isocyanate-reactive group which is OH or NH.sub.2 and m is 0, 1 or 2; andn is 1 or 2;with the proviso that at least one of R.sup.
    Type: Grant
    Filed: September 9, 1993
    Date of Patent: September 13, 1994
    Assignee: Imperial Chemical Industries PLC
    Inventors: Rik De Vos, N. Washington Keane
  • Patent number: 5338478
    Abstract: A stabilizer composition useful as an additive for polyether polyols, particularly those employed in the manufacture of polyurethane foams, is provided which comprises a diarylamine, a sterically hindered phenol and a pentaerythritol diphosphite.
    Type: Grant
    Filed: July 27, 1993
    Date of Patent: August 16, 1994
    Assignee: Uniroyal Chemical Company, Inc.
    Inventors: Lawrence B. Barry, Mark C. Richardson
  • Patent number: 5331016
    Abstract: To arrive at an economical method of producing water-expanded polymer resin moldings, it is proposed that a monomer component and a cross-linker on an acrylate basis and/or a PMMA prepolymer be used as resin-forming components of a curable mixture.
    Type: Grant
    Filed: October 18, 1993
    Date of Patent: July 19, 1994
    Assignee: Schock & Co., GmbH
    Inventors: Lothar Frank, deceased, Gunter Hieber
  • Patent number: 5310766
    Abstract: This invention relates to a polyurethane foam stabilizing additive that comprises from about 10 to about 50 weight percent a hydrocarbon oil, and in from about 90 to about 50 weight percent a polyester polyol which is a solid at room temperature. Use of the additive in a polyurethane foaming process provides for improved dimensional stability of the resulting foam. The additive is especially of value when preparing water blown polyether polyol-based polyurethane foam useful, for example, in sealant applications.
    Type: Grant
    Filed: June 15, 1992
    Date of Patent: May 10, 1994
    Assignee: The Dow Chemical Company
    Inventors: Robert Baumann, Rajinder Sood
  • Patent number: 5306738
    Abstract: Process for producing a flexible polyurethane foam through reaction of a polyol with a polyisocyanate in the presence of an amine catalyst, a blowing agent, and a foam stabilizer, the amine catalyst comprising at least one of the imidazoles represented by the general formula below: ##STR1## wherein R.sup.1 is alkyl of 1 to 4 carbons, dimethylaminopropyl, benzyl, vinyl, or hydroxyalkyl of 1 to 3 carbons; R.sup.2 is hydrogen, alkyl of 1 to 4 carbons, allyl, benzyl, or phenyl; and R.sup.3 and R.sup.4 are respectively hydrogen, alkyl of 1 to 4 carbons, or hydroxymethyl.
    Type: Grant
    Filed: February 12, 1993
    Date of Patent: April 26, 1994
    Assignee: Tosoh Corporation
    Inventors: Hiroyuki Yoshimura, Yutaka Tamano, Shoji Arai
  • Patent number: 5268394
    Abstract: The invention relates to the use of an acridans of Structure (I) as a stabilizer, preferably combined with hindered amine, phenolic, and phosphite stabilizers for stabilizing polyether polyols for polyurethane flexible foams and as stabilizers for the polyglycols, heat transfer fluids, lubricating additives.
    Type: Grant
    Filed: February 9, 1993
    Date of Patent: December 7, 1993
    Assignee: Uniroyal Chemical Company, Inc.
    Inventors: Edward L. Wheeler, Lawrence B. Barry, Mark C. Richardson
  • Patent number: 5264463
    Abstract: The invention relates to flame-retardant rigid polyurethane foams produced using halogenated polyetherpolyols and at least one blowing agent chosen from 1,1-dichloro-1-fluoroethane and 1,1,1-trifluoro-2,2-dichloroethane in the presence of ethylene glycol. It also relates to compositions intended for their manufacture and to a process for manufacturing them.The rigid foams according to the invention exhibit an improved fire resistance and an improved dimensional stability.
    Type: Grant
    Filed: April 2, 1993
    Date of Patent: November 23, 1993
    Assignee: Solvay (Societe Anonyme)
    Inventors: Pierre Barthelemy, Annie Leroy
  • Patent number: 5262448
    Abstract: The present invention relates to a process for the production of an optionally cellular elastomeric molded article having a compact surface and based on a polyurea elastomer containing urethane groups which is the reaction product ofa) a polyisocyanate component based on a polyisocyanate of the diphenylmethane series,b) a polyol component based on a polyether polyol, a polyester polyol or mixtures thereof andc) a polyamine component containing1) 50 to 95% by weight, based on the weight of component c), of at least one sterically hindered aromatic diamine and2) 5 to 50% by weight, based on the weight of component c), of at least one compound which has a molecular weight of about 1,000 to 12,000,by reacting component a) with at least 90% by weight of component b) at an NCO/OH equivalent ratio of at least 4:1 to form an NCO semi-prepolymer and subsequently reacting the NCO semi-prepolymer with component c) and the remainder of component b) by the reaction injection molding process to form the polyurea elastomer
    Type: Grant
    Filed: April 27, 1990
    Date of Patent: November 16, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Andreas Ruckes, Hans-Joachim Meiners, Heinrich Boden, Manfred Schmidt
  • Patent number: 5256333
    Abstract: A stabilizer composition useful as an additive for polyether polyols, particularly those employed in the manufacture of polyurethane foams, is provided which comprises a diarylamine, a sterically hindered phenol and a pentaerythritol diphosphite.
    Type: Grant
    Filed: March 25, 1993
    Date of Patent: October 26, 1993
    Assignee: Uniroyal Chemical Company, Inc.
    Inventors: Lawrence B. Barry, Mark C. Richardson
  • Patent number: 5254599
    Abstract: To arrive at an economical method of producing water-expanded polymer resin moldings, it is proposed that a monomer component and a cross-linker on an acrylate basis and/or a PMMA prepolymer be used as resin-forming components of a curable mixture, with the weight ratio of the water component to the resin-forming component being at least 1:1.
    Type: Grant
    Filed: February 12, 1992
    Date of Patent: October 19, 1993
    Assignee: Schock & Co. GmbH
    Inventor: Lothar Frank, deceased
  • Patent number: 5244931
    Abstract: The invention relates to low density cellular, rigid polyurethanes which employ the dimethyl esters of adipic, glutaric and succinic acids and mixtures thereof in conjunction with nonylphenol as cell-opening agents. The use of this ester phenol mixture obviates the need of other surfactants, particularly silicone surfactants which reduce the adhesion of the urethanes to fabrics in pour-behind-fabric applications.
    Type: Grant
    Filed: March 25, 1992
    Date of Patent: September 14, 1993
    Assignee: BASF Corporation
    Inventor: Gregg S. Kuyzin
  • Patent number: 5242953
    Abstract: The present invention relates to a stabilized composition containing a polyol/melamine and an effective stabilizing amount of an amine terminated polyether.
    Type: Grant
    Filed: October 17, 1991
    Date of Patent: September 7, 1993
    Assignee: Miles Inc.
    Inventors: Edmund J. Madaj, Josef Sanders, Robson Mafoti
  • Patent number: 5236964
    Abstract: A method for preparing a reduced density MDI based polyurethane foam by reacting a polyol with an MDI composition using at least 4 parts by weight water based on 100 parts of polyol as the blowing agent and a catalyst composition consisting essentially of the addition product of triethylenediamine and a boron compound of the formulaR.sub.n B(OH).sub.3-nwheren=0 or 1, andR=C.sub.1 -C.sub.8 alkyl, C.sub.5 -C.sub.8 cycloalkyl or C.sub.6 -C.sub.10 aryl.
    Type: Grant
    Filed: December 4, 1992
    Date of Patent: August 17, 1993
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Ann C. L. Savoca, Alan M. Franson
  • Patent number: 5234961
    Abstract: The present invention relates to water blown integral skin polyurethane foams. These foams are prepared using a diphenylmethane diisocyanate:polytetrahydrofuran prepolymer. The polyurethane foams prepared with this prepolymer exhibit improved abrasion resistance and cold flex characteristics when compared to water blown integral skin foams prepared without the prepolymer. These foams are suitable for use in shoe sole applications.
    Type: Grant
    Filed: December 7, 1992
    Date of Patent: August 10, 1993
    Assignee: BASF Corporation
    Inventor: Rick A. Tanis
  • Patent number: 5234966
    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: October 13, 1992
    Date of Patent: August 10, 1993
    Assignee: Ethyl Corporation
    Inventors: James R. Barringer, H. Eugene Broemmelsiek, Carroll W. Lanier, Raymond Lee
  • Patent number: 5219892
    Abstract: Polyether polyols and polyurethane foams are stabilized by including therein a stabilizer composition of (a) tetrakis[methylene(3,5-di-tert-butyl-4-hydroxyhydrocinnamate)]methane and (b) a reaction product of diphenylamine and diisobutylene wherein the molar ratio of the amine to the diisobutylene is 1:1.1 to 1:2.5. The stabilizer composition may contain a third synergistic component, phenothiazine or certain alkyl derivatives of phenothiazine. The stabilizer composition may further contain trihydrocarbyl phosphite to stabilize the color of same.
    Type: Grant
    Filed: June 16, 1992
    Date of Patent: June 15, 1993
    Assignee: R. T. Vanderbilt Company, Inc.
    Inventor: Richard A. Suhoza
  • Patent number: 5190985
    Abstract: Stable, emission-free, low-shrinkage, fireproof aminoplastic cellular foams are obtained by using an unsaturated, halogenated polyalcohol in the resin precondensate constituent and a dodecylbenzolsulphonic acid partially esterified preferably with a fatty alcohol and a long-chain polyhydric alcohol, preferably a polyethylene glycol, in the foaming agent hardener consituent. The foams are particularly suitable for building construction and for covering, as well as in the agricultural sector and or oil absorption. For certain of these applications, the resin pre-condensate constituent of the invention can be processed with a conventional foamer hardener constituent or the foamer hardener constituent of the invention can be processed with a conventional resin precondensate constituent.
    Type: Grant
    Filed: January 21, 1992
    Date of Patent: March 2, 1993
    Assignee: IDC System AG
    Inventor: Karl J. Mader
  • Patent number: 5189068
    Abstract: A process for the preparation of cellular plastics, preferably hard structural polyurethane foams, by the polyisocyanate polyaddition process involves reactinga) an organic and/or modified organic polyisocyanate withb) at least one high-molecular-weight compound containing at least two reactive hydrogen atoms and, if desired,c) a low-molecular-weight chain extender and/or cross-linking agent,in the presence ofd) a blowing agent from the group comprising tertiary alcohols (di), preferably tertiary butanol, or a mixture of at least one tertiary alcohol (di) and water (dii),e) a catalyst and, if desired,f) assistants and/or additives.
    Type: Grant
    Filed: July 20, 1992
    Date of Patent: February 23, 1993
    Assignee: BASF Aktiengesellschaft
    Inventors: Ralf Boehme, Otto Volkert
  • Patent number: 5182314
    Abstract: A method for producing a flexible polyurethane foam by the reaction of an active-hydrogen-containing component composed of an active hydrogen compound, a blowing agent, and an additive with an organic polyisocyanate compound: said blowing agent being carbon dioxide which is generated by the reaction of water with free isocyanate groups, said organic polyisocyanate compound being a mixture of diphenylmethane diisocyanates and polyphenylmethane polyisocyanate, which the mixture contains said diphenylmethane diisocyanate and said polyphenylmethane polyisocyanate in a mixing ratio of not more than 1.0 and 4,4'-MDI in a ratio of not more than 60% by weight based on the whole isocyanate mixture, and said polyphenylmethane polyisocyanate having an average functionality (hereinafter referred to as "f") of not less than 2.9 and containing diphenylmethane diisocyanate in an amount of less than 35% by weight.
    Type: Grant
    Filed: September 27, 1990
    Date of Patent: January 26, 1993
    Assignee: 501 Nippon Polyurethane Industry Co., Ltd.
    Inventors: Kensuke Tani, Yoshiaki Tonomura
  • Patent number: 5182310
    Abstract: The present invention refers to isocyanate-reactive compositions containing hindered phenolic antioxidants having a molecular weight of at least 700. These compositions, when used to prepare flexible polyurethane foams, especially slabstock foam, provide foams which exhibit a significant reduction of scorch.
    Type: Grant
    Filed: July 25, 1991
    Date of Patent: January 26, 1993
    Assignee: Dow Chemical Company
    Inventors: Richard G. Skorpenske, Alan K. Schrock
  • Patent number: 5180755
    Abstract: A method for producing antistatic polyurethane resins according to the present invention comprises a reaction of a compound having at least two active hydrogen atoms with an organic isocyanate in the presence of at least one kind of complex compounds represented by a general formula [Me(ClO.sub.4).sub.n ].sub.x [R(OH).sub.y ].sub.z and being liquid at room temperature, wherein Me is an element belonging to Group I or II in the periodic table; n is a number of 1-2; x is a number of 1-5; y is a number of 1-3; z is a number of 1-6; and R is a residual group other than hydroxyl group in a polyhydric alcohol or its derivative. Me of said complex compounds is preferably Li, Na, K, Ca or Ba.As antistatic agents are liquid at room temperature in the present invention, they can be formulated uniformly within raw materials of polyurethane resins. By virtue thereof, the antistatic effect is exhibited homogeneously and so highly.
    Type: Grant
    Filed: June 26, 1991
    Date of Patent: January 19, 1993
    Assignee: Bridgestone Corporation
    Inventors: Kuniaki Yasunaga, Shigeru Ueno
  • Patent number: 5177117
    Abstract: Preparation of a polyurethane and/or polyisocyanurate product by the reaction of a composition containing an organic polyisocyanate, an active hydrogen containing compound and water as a blowing agent using an effective amount of a molecular sieve containing sorbed amine catalyst and/or crosslinker.
    Type: Grant
    Filed: March 23, 1990
    Date of Patent: January 5, 1993
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Charles G. Coe, Robert G. Petrella