Organic Metal Compound Contains Tin Patents (Class 521/126)
  • Patent number: 5798533
    Abstract: A polyol composition is provided which when reacted with and organic isocyanate, has good flow characteristics and makes an all water blown rigid polyurethane foam having good dimensional stability at low core densities of 1.1 pcf to 2.0 pcf. The polyol composition has a polyol component which must have present a polyoxyalkylene polyether polyol having an equivalent weight of 130 or less, an average functionality of 3.1 or greater, 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 an equivalent weight of greater than 130. The polyol composition also has water as the blowing agent, and further contains a blow catalyst, a delayed action gel catalyst, and preferably a cure catalyst and a surfactant.
    Type: Grant
    Filed: April 21, 1995
    Date of Patent: August 25, 1998
    Assignee: BASF Corporation
    Inventors: Thomas L. Fishback, Curtis J. Reichel, Thomas B. Lee
  • Patent number: 5721285
    Abstract: The present invention provides a thermal insulating foamed material with excellent thermal insulating properties and a method of manufacturing the same. The method comprises the steps of: concurrently mixing and blowing a polyurethane material to produce a foamed polyurethane resin composition with a multiplicity of closed cells, the polyurethane material including a reactive blowing agent, a volatile compound having a boiling point of not higher than 150.degree. C. and a molecular weight of not less than 70, an epoxy compound, and a carbon dioxide fixation catalyst, wherein the closed cells are filled with the volatile compound and carbon dioxide produced by a reaction of the reactive blowing agent with a polyisocyanate; and allowing the carbon dioxide to chemically react with epoxy groups of the epoxy compound in the presence of the carbon dioxide fixation catalyst to form a solid or liquid cyclic carbonate.
    Type: Grant
    Filed: January 26, 1996
    Date of Patent: February 24, 1998
    Assignees: Matsushita Electric Industrial Co., Ltd., Matsushita Refrigeration Company
    Inventors: Hideo Nakamoto, Tomohisa Tenra, Tsukasa Takushima, Takayoshi Ueno, Masaaki Suzuki, Fumihiro Inagaki, Takashi Hashida, Yoshio Kishimoto
  • Patent number: 5688834
    Abstract: The present invention relates to foam compositions which are expanded with hydrohalocarbon blowing agents in the presence of catalysts which result in a decreased amount of decomposition of the hydrohalocarbon blowing agents to haloalkenes during the polymerization. Thus, the present invention provides compositions comprising polyisocyanate, polyol, hydrohalocarbon blowing agent, surfactant, and at least one catalyst for polymerization of the polyisocyanate and polyol wherein the catalyst is less volatile than N,N-dimethylcyclohexylamine or the catalyst is a tertiary amine having at least one isocyanate-reactive functionality selected from the group consisting of --OH and --NH-- and the catalyst results in a decreased amount of decomposition of the hydrohalocarbon blowing agents to haloalkenes during polymerization of the polyisocyanate and the polyol and especially during use of the foam samples at a temperature of at least about 54.degree. C.
    Type: Grant
    Filed: October 15, 1991
    Date of Patent: November 18, 1997
    Assignee: AlliedSignal, Inc.
    Inventors: Robert Christian Parker, Timothy Rech Demmin
  • Patent number: 5681868
    Abstract: A pressure sensitive adhesive consisting of a polyurethane foam is used for adhering decorative parts to automobiles and other vehicles. The adhesive is characterized by high tensile strength and elongation, excellent peel strength and good thermal and mechanical stress tolerance.
    Type: Grant
    Filed: November 3, 1995
    Date of Patent: October 28, 1997
    Assignee: Norton Performance Plastics Corporation
    Inventors: Dean A. Waldenberger, Charles A. Smith
  • Patent number: 5656677
    Abstract: A method for preparing a light stable polyurethane, sprayable by means of a spray pistol, wherein use is made of an active hydrogen containing compound, wherein the functional groups consist for at least 50% of an active CH.sub.2 OH, NH and/or NH.sub.2 group, the functionality of which varies from 2 to 8 and the equivalent weight of which is comprised between 100 and 3500, together with 2 to 300 parts, per 100 parts of said compounds of a chain extender and/or a cross-linker, the functional groups of which are OH groups, at least 50% of which are primary OH groups, the equivalent weight of which is less than 100 and the functionality of which varies from 2 to 6, and with a catalytic system which comprises at least an organic lead, bismuth and/or tin (IV) compound and at least an amine initiator, having a functionality of 2 to 6, an equivalent weight lower than or equal to 200, and at least one aliphatic NH.sub.2 or NH group.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: August 12, 1997
    Assignee: Recticel
    Inventors: Lucien Jourquin, Eddie Du Prez
  • Patent number: 5646195
    Abstract: Polyurethane foam backed textiles, particularly polyurethane backed carpets can be prepared using a formulation including a dialkyltin sulfide catalyst. Use of the dialkyltin sulfide catalyst allows for a delayed gellation without substantially increasing the time from gellation to cure. The delay in gellation provides for improved handling and backing quality.
    Type: Grant
    Filed: March 7, 1995
    Date of Patent: July 8, 1997
    Assignee: The Dow Chemical Company
    Inventor: Larry Wayne Mobley
  • Patent number: 5633292
    Abstract: The invention relates to a method for the production of high resilience polyurethane foams by reacting a mixture of highly reactive polyols, which usually have an average molecular weight of between about 4800 and 6500 g/mole and at least 70% primary hydroxyl groups and optionally contain fillers, polyfunctional isocyanates, amine activators, cross-linking agents, tin catalysts, blowing agents and stabilizers, compounds of the general formula ##STR1## being used as stabilizers, in which R.sup.1 is the same or different in the average molecule and represents a methyl group or a group of the general formula --CH.sub.2 --CH.sub.2 --(CH.sub.2).sub.a --C.sub.6 H.sub.3 (R.sup.2).sub.2 (a=0 or 1; R.sup.2 =--O--CH.sub.3), with the proviso that at least one R.sup.1 group is a group having the formula --CH.sub.2 --CH.sub.2 --(CH.sub.2)a--C.sub.6 H.sub.3 (R.sup.2).sub.2n has an average numerical value of 2 to 11,m has an average numerical value of 1 to 6,with the proviso that the quotient p=(n+m+2)/m is 1.66 to 12.
    Type: Grant
    Filed: December 7, 1995
    Date of Patent: May 27, 1997
    Assignee: Th. Goldschmidt AG.
    Inventors: Anette Brune, Georg Burkhart, Volker Zellmer
  • Patent number: 5599851
    Abstract: This invention relates to a kind of superfine microelemental biochemical mixture and its foamed plastic products. The mixture contains titanium oxide, zirconia, silica, yttrium oxide, cerium oxide, tin dioxide, silver phosphate and other microelements, and has certain impact on human body's micro-circulation. The plastic products comprise the mixture according to the invention and base materials which conventionally are used in preparation for foamed plastics.
    Type: Grant
    Filed: September 1, 1995
    Date of Patent: February 4, 1997
    Assignee: Wonder & Bioenergy Hi-Tech International Inc.
    Inventors: Rui Jin, Jun Liu, Qibiao Yang
  • Patent number: 5596021
    Abstract: The present invention relates to a crosslinkable polyester/isocyanate composition suitable for preparing composite manufactured articles endowed with high structural mechanical properties, by means of injection processes, comprising:A--a polyfunctional isocyanate;B--an unsaturated polyester resin, or a vinyl ester resin, or a mixture of both said resins, wherein said resin can contain free hydroxy groups;C--a free-radical polymerization initiator;D--a promoter of decomposition of (C) initiator;E--a catalyst of (A) isocyanate trimerization.
    Type: Grant
    Filed: September 15, 1994
    Date of Patent: January 21, 1997
    Assignee: Sir Industriale S.p.A.
    Inventors: Andrea Adembri, Lino Credali, Giovanni Di Drusco
  • Patent number: 5585412
    Abstract: The present invention relates to a process for producing a flexible polyurethane foam by reacting, at a reaction temperature within a temperature range of between about 70.degree. F. and about 150.degree. F., a reaction mixture comprised of a polyol, an organic isocyanate, water, an encapsulated blowing agent, and a reaction catalyst, wherein the encapsulated blowing agent comprises a shell and a core, said shell comprising a polymer having a melting point above the initial reaction temperature, and said core comprising a gaseous blowing agent or blowing agent precursor for blowing said reaction mixture at said reaction temperature. In another aspect, the present invention relates to a process for cooling a hot polyurethane foam utilizing encapsulated water contained in the foam forming reaction mixture.
    Type: Grant
    Filed: November 1, 1991
    Date of Patent: December 17, 1996
    Assignee: Olin Corporation
    Inventors: Frank S. Natoli, Kiran B. Chandalia
  • Patent number: 5514723
    Abstract: The present invention is directed to an integral skin foam prepared by reacting an isocyanate, an isocyanate reactive component and water as the only blowing agent and to a catalyst useful therein. The catalyst broadly comprises a diorganotin sulfide, a tertiary amine and a tin compound other than a diorganotin sulfide.
    Type: Grant
    Filed: September 26, 1995
    Date of Patent: May 7, 1996
    Assignee: Bayer Corporation
    Inventors: Edmund J. Madaj, Kurt E. Walter
  • Patent number: 5502150
    Abstract: The present invention is directed to polyurethane moldings produced via the RIM process. These polyurethane moldings have excellent reactivity, demold properties (at a 30s demold), and good elongation and tear strength, and comprise the reaction product of an HDI prepolymer having an NCO content of 5 to 25%, a functionality of less than 2.3, and a monomer content of less than 10%, with an isocyanate-reactive component comprising b1) at least one relatively high molecular weight organic compound containing at least about two isocyanate-reactive hydroxyl groups; b2) at least one relatively low molecular weight organic compound selected from the group consisting of diols, aminoalcohols, and mixtures thereof; and b3) at least one relatively low molecular weight hydroxyl-based crosslinking compound containing no more than one aliphatic amine hydrogen atoms capable of reacting with isocyanate groups; in the presence of at least one catalyst.
    Type: Grant
    Filed: June 29, 1994
    Date of Patent: March 26, 1996
    Assignee: Bayer Corporation
    Inventors: David D. Steppan, Ronald A. Cageao, Neil H. Nodelman, William E. Slack, Frank Sanns, Jr.
  • Patent number: 5491174
    Abstract: Novel catalyst compositions comprising complexes of tin(IV) salts and amine compounds are used to prepare polyurethanes, polyureas, polycarbodiimides and polyisocyanurates. The complexes, which preferably employ primary amines, allow delay of gelation until they dissociate under certain reaction conditions. The complexes can be prepared neat or in situ in an active hydrogen containing formulation component. The complexes serve to delay gelation of the formulation because they can be prepared to be relatively stable to moisture and will predictably dissociate upon heating, either as a result of the exothermic nature of the reaction being catalyzed or with application of an external heat source. The catalyst compositions are particularly useful for preparation of carpet underlay and in other applications requiring significant delay prior to gelation.
    Type: Grant
    Filed: April 7, 1995
    Date of Patent: February 13, 1996
    Assignee: The Dow Chemical Company
    Inventors: Laura A. Grier, Paul L. Neill, Ralph D. Priester, Larry W. Mobley, Kenneth W. Skaggs, Robert B. Turner
  • Patent number: 5395859
    Abstract: The present invention relates to foam compositions which are expanded with hydrohalocarbon blowing agents in the presence of catalysts which are capable of decreasing the amount of decomposition of the hydrohalocarbon blowing agents to haloalkenes during the polymerization. Thus, the present invention provides compositions comprising polyisocyanate, polyol, hydrohalocarbon blowing agent, surfactant, and catalyst for polymerization of the polyisocyanate and polyol wherein the catalyst is capable of decreasing the amount of decomposition of the hydrohalocarbon blowing agents to haloalkenes during polymerization of the polyisocyanate and the polyol.
    Type: Grant
    Filed: August 30, 1991
    Date of Patent: March 7, 1995
    Assignee: AlliedSignal Inc.
    Inventors: Timothy R. Demmin, Robert C. Parker, Richard E. Eibeck, Gary M. Knopeck, Donna M. Ruszaj
  • Patent number: 5393569
    Abstract: A water-permeable and fire-resistant film and the preparing method thereof is disclosed. The water-permeable and fire-resistant film comprises polyurethane resin; a first fire-resistant agent; a second fire-resistant agent, an inorganic fire-resistant agent and an additive agent. The first fire-resistant agent used is selected from the group consisting of paraffine chlorinated, decabromodiphenyl oxide, hexachloro benzene, hexabromo benzene, pentabromo ethyl benzene, pentabromo diphenyl oxide and octabromo diphenyl ether. The second fire-resistant agent used is selected from the group consisting of Sb203 and Sb205. The surface of the film produced is smooth.
    Type: Grant
    Filed: February 14, 1994
    Date of Patent: February 28, 1995
    Assignee: China Textile Institute
    Inventors: Shin-Chuan Yao, Jong-Fu Wu, Kun-Lin Cheng, Chiu-Hsiung Tsai, Farn-Ping Koong, Kun-Lung Chuang, Shu-Lan Yao, Chin-Liu Liu
  • Patent number: 5391583
    Abstract: Flame-retardant poly (polyisocyanate-organic phosphorus) products are produced by mixing and reacting an organic phosphorus containing compound and a polyisocyanate compound in the presence of a polyisocyante catalyst. No other blowing agent is necessary.The flame-retardant polyurethane foam products may be used for thermal and sound-insulation, for cushioning, for molding useful objects and as a cavity filler.
    Type: Grant
    Filed: October 28, 1993
    Date of Patent: February 21, 1995
    Inventor: David H. Blount
  • Patent number: 5382602
    Abstract: Flexible, slabstock polyurethane foam compositions useful for a rapid-cool process are disclosed. The foams are produced in the presence of a tetravalent tin catalyst, preferably at a relatively low isocyanate index, and preferably with a polyol that contains a non-volatile inhibitor. The foams of the invention eliminate or greatly reduce the amount of visible smoke produced in a rapid-cool process.
    Type: Grant
    Filed: June 9, 1993
    Date of Patent: January 17, 1995
    Inventors: Robert D. Duffy, George Combs
  • Patent number: 5348985
    Abstract: A process for making thermoplastic polyester foams comprises the steps of subjecting macrocyclic polyester oligomer precursors to initiators and blowing agents at a constant operating temperature in order to produce foams which unexpectedly display low foam densities.
    Type: Grant
    Filed: January 18, 1994
    Date of Patent: September 20, 1994
    Assignee: General Electric Company
    Inventors: Eric J. Pearce, John W. Carbone
  • Patent number: 5328938
    Abstract: The present invention relates to an improved process for producing, by means of a portable foaming apparatus having a static mixer, a polyurethane foam by reacting a reaction mixture comprised of a polyol, an organic isocyanate, a foaming/frothing agent, and a reaction catalyst, the improvement comprising employing monochlorodifluoromethane as the sole blowing/frothing agent in said reaction in order to produce a CFC-free essentially closed-cell rigid or semi-rigid polyurethane foam. Also claimed is the foam produced by the above process.
    Type: Grant
    Filed: July 26, 1993
    Date of Patent: July 12, 1994
    Assignee: BASF Corporation
    Inventors: Todd W. Wishneski, Wade T. Petroskey
  • Patent number: 5318996
    Abstract: Polyurethane foams blown with a mixture of water, HCFC-22 or HCFC-141b, and a perfluorinated hydrocarbon having from 3 to 8 carbon atoms yields polyurethane and polyisocyanurate foams having exceptional physical properties, i.e., small and uniform cells, low initial K-factor, low aged K-factor, and high tensile strength. The low initial and aged K-factors are most unexpected when it is considered that significant amounts of water are used to blow the foam.
    Type: Grant
    Filed: October 8, 1993
    Date of Patent: June 7, 1994
    Assignee: BASF Corporation
    Inventors: Lorraine C. Yu-Hallada, Curtis J. Reichel
  • Patent number: 5300532
    Abstract: The present invention relates to integral skin-foam molded articles obtained by reaction-injection molding a polyurethane foam material comprising a polyol component, an isocyanate component, a catalyst, and a blowing agent. Catalysts may be selected from tin and amine compounds. Water has been successfully used as a blowing agent.
    Type: Grant
    Filed: May 12, 1993
    Date of Patent: April 5, 1994
    Assignee: Toyoda Gosei Co., Ltd.
    Inventors: Masahiro Takimoto, Hisashi Mizuno, Junichi Hirano
  • Patent number: 5292778
    Abstract: A polymer-modified polyol dispersion comprises a polyaddition product dispersed in a polyol. The polyaddition product is present in an amount of from about 25 to about 70 percent by weight based on the total weight of the polyaddition product and the polyol. The dispersion has a viscosity in the range of from about 4,000 to about 50,000 mPa.s, the viscosity remaining substantially the same after production of the dispersion. A process for producing the polymer-modified polyol dispersion is also disclosed together with a process for using the dispersion to produce a polyurethane foam.
    Type: Grant
    Filed: November 20, 1992
    Date of Patent: March 8, 1994
    Assignee: Woodbridge Foam Corporation
    Inventors: Kasper J. Van Veen, G. Ronald Blair
  • Patent number: 5268393
    Abstract: Flame-retardant polyurethane foam products are produced by mixing and reacting an organic phosphorus containing compound which will react with a polyisocyanate compound and produce a gaseous compound and a polyisocyanate compound in the presence of a polyurethane catalyst. No other blowing agent is necessary.The flame-retardant polyurethane foam products may be used for thermal and sound-insulation, for cushioning, for molding useful objects and as a cavity filler.
    Type: Grant
    Filed: July 17, 1992
    Date of Patent: December 7, 1993
    Inventor: David H. Blount
  • Patent number: 5264464
    Abstract: The present invention relates to an improved process for producing, by means of a portable foaming apparatus having a static mixer, a polyurethane foam by reacting a reaction mixture comprised of a polyol, an organic isocyanate, a foaming/frothing agent, and a reaction catalyst, the improvement comprising employing monochlorodifluoromethane as the sole blowing/frothing agent in said reaction in order to produce a CFC-free essentially closed-cell rigid or semi-rigid polyurethane foam. Also claimed is the foam produced by the above process.
    Type: Grant
    Filed: March 1, 1993
    Date of Patent: November 23, 1993
    Assignee: BASF Corporation
    Inventors: Todd W. Wishneski, Wade T. Petroskey
  • Patent number: 5256704
    Abstract: The invention relates to reaction injection molded elastomers derived from high molecular weight polyether polyols, an aromatic diamine chain extender, a polyisocyanate and a hydroxyl-containing organotin catalyst. The reaction injection molded (RIM) elastomers of this invention are useful, for example, as automobile body parts.
    Type: Grant
    Filed: September 8, 1992
    Date of Patent: October 26, 1993
    Assignee: Air Products and Chemicals, Inc.
    Inventors: John E. Dewhurst, James D. Nichols
  • Patent number: 5227450
    Abstract: The invention relates to reaction injection molded elastomers derived from high molecular weight polyether polyols, an aromatic diamine chain extender, a polyisocyanate and a hydroxyl-containing organotin catalyst. The reaction injection molded (RIM) elastomers of this invention are useful, for example, as automobile body parts.
    Type: Grant
    Filed: June 24, 1992
    Date of Patent: July 13, 1993
    Assignee: Air Products and Chemicals, Inc.
    Inventors: John E. Dewhurst, James D. Nichols
  • Patent number: 5212209
    Abstract: Compositions and a method for preparing a molded foamed polymeric article comprising (1) a relatively high molecular weight polyahl and a relatively low molecular weight polyol, in proportions such that the relatively high molecular weight polyahl and the relatively low molecular weight polyol are incompatible, (2) a polyisocyanate, (3) a blowing agent, and (4) an internal mold release/compatibilizing agent containing (a) a metal salt of a weak acid, wherein the metal is selected from elements of the Periodic Table of the Elements having Atomic Numbers 3-5, 11-14, 19-34, 37-52, 55-57, and 72-84, and (b) a compound containing at least one amine group, wherein the internal mold release/compatibilizing agent is present in an amount sufficient to provide mold release characteristics to the article and to compatibilize the relatively high molecular weight polyahl and the relatively low molecular weight polyol, are disclosed. In a preferred embodiment the blowing agent is water.
    Type: Grant
    Filed: November 18, 1991
    Date of Patent: May 18, 1993
    Assignee: The Dow Chemical Company
    Inventors: Laura B. Weaver, Robert Carswell
  • Patent number: 5196455
    Abstract: The present invention relates to a one-part, self-leveling urethane sealant composition for substantially horizontal surfaces, wherein the sealant will flow within a crack, joint or the like and quickly cure to provide an elastomeric seal having a smooth, substantially horizontal surface. The cured sealant provides a surface and volume cure time superior to many known systems, and once cured, provides an elastomeric seal having a superior void volume and void distribution than many known self-leveling sealant systems.
    Type: Grant
    Filed: May 30, 1991
    Date of Patent: March 23, 1993
    Assignee: Tremco Incorporated
    Inventor: Joy Bryant
  • 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: 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: 5132331
    Abstract: A foamable thermoplastic molding composition comprising:a) an aromatic polycarbonate, andb) 0.1 to 5% by weight of a hydrate of an inorganic salt, is disclosed. The salt is inert to the polycarbonate and is capable of releasing its water of hydration only at a temperature above 100.degree. C.The composition which may optionally further contain c) up to 10% by weight of a nucleating agent, and d) up to 30% by weight of glass fibers is characterized by its good pore structure.
    Type: Grant
    Filed: December 27, 1991
    Date of Patent: July 21, 1992
    Assignees: Bayer Aktiengesellschaft, Miles Inc.
    Inventors: Burkhart Kohler, Klaus Kircher, Ulrich Grigo, Klaus Horn, Wolfgang Ebert, Charles-Earl Lundy
  • Patent number: 5130349
    Abstract: The water resistance of intumescent compositions is improved if the composition comprises at least one organotin derivative of a polyol. Organotin derivatives of polyols can be produced by reacting polyol with dialkyltin oxide or with dialkyltin dialkoxide.
    Type: Grant
    Filed: November 7, 1991
    Date of Patent: July 14, 1992
    Assignee: PPG Industries, Inc.
    Inventors: Seetha Eswarakrishnan, Carol L. Knox, Suresh B. Damle
  • Patent number: 5115073
    Abstract: The present invention is directed to a polyurethane system containing isocyanate groups prepared by reactingA) 70 to 98 parts by weight of at least one polyester diol having a melting point of 30.degree. C. to 60.degree. C. and a molecular weight of 800 to 8,000,B) 2 to 30 parts by weight of at least one polyester diol having a melting point of 65.degree. C. to 150.degree. C. and a molecular weight of 600 to 8,000, andC) no more than 1 mole of a diol having a molecular weight of less than 600 per moles of A) plus B), with,D) at least one organic polyisocyanate, the ratio of isocyanate groups to hydroxyl groups is between 3:1 and 1.2:1.
    Type: Grant
    Filed: September 11, 1990
    Date of Patent: May 19, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Walter Meckel, Eduard Hansel, Gu Arend, Klaus Konig
  • Patent number: 5110840
    Abstract: Flame-retardant polyurethane foam is produced by mixing and reacting a polyol, a phosphorus acid and a compound containing two or more isocyanate radicals. The flame-retardant polyurethane foam may be used for cushioning, sound and thermal insulation, coating agent, molding agent, or as a cavity filler.
    Type: Grant
    Filed: January 2, 1990
    Date of Patent: May 5, 1992
    Inventor: David H. Blount
  • Patent number: 5104909
    Abstract: A water absorbent, relatively dimensionally stable foam is formed from a prepolymer prepared from a polyoxyethylene containing diol, a crosslinking agent and a polyisocyanate. The preferred polyisocyanate is methylene bis(cyclohexyl isocyanate). The foam also demonstrates the ability to hold substantial amounts of water, even under pressure, and can be used in various personal and medical care products such as diapers and surgical sponges.
    Type: Grant
    Filed: September 21, 1989
    Date of Patent: April 14, 1992
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Timothy G. Grasel, James L. Guthrie
  • Patent number: 5089645
    Abstract: Useful as catalysts for the reaction of a polyisocyanate or a partially blocked polyisocyanate with a hydroxyl-containing compound are hydroxyl-containing organotins such as, for example, compounds of formulas I-III ##STR1## where R is a C.sub.1 -C.sub.8 alkyl or an aryl group;R.sup.1 is a C.sub.2 -C.sub.22 divalent hydrocarbyl group which may contain a hydroxyl substituent;X is a linking group which may be --O--, --S-- or --O.sub.2 C--;Y is a hydroxyl-containing C.sub.3 -C.sub.5 alkylene group;Y' is a C.sub.1 -C.sub.9 divalent hydrocarbyl group;Z is divalent organic linking group; andn is 0 or 1.Suitable hydroxyl-containing organotin compounds would also include polymeric organotin compounds prepared by the reaction of a diorganotin oxide or diorganotin dichloride with HSCH.sub.2 CH(OH)CH.sub.2 XH, preferably in a 1:0.5-1 molar ratio, where X is --S-- or --O--.
    Type: Grant
    Filed: December 17, 1990
    Date of Patent: February 18, 1992
    Assignee: Air Products and Chemicals, Inc.
    Inventors: James D. Nichols, John B. Dickenson
  • Patent number: 5089583
    Abstract: Useful as catalysts for the reaction of a polyisocyanate or a partially blocked polyisocyanate with a hydroxy-containing compound are organotins of the formula ##STR1## where R is a C.sub.1 -C.sub.8 alkyl or an aryl group.Y is --CH.sub.2 CH.sub.2 --, --CH.sub.2 CH.sub.2 CH.sub.2 --, --CH.sub.2 CH(CH.sub.3)--, --CH.sub.2 CH(OH)CH.sub.2 --, or ##STR2## and X is a linking group which may be --S-- or --O--.Also disclosed are cationic electrodepositable compositions containing such catalysts.
    Type: Grant
    Filed: October 20, 1989
    Date of Patent: February 18, 1992
    Assignee: Air Products and Chemicals, Inc.
    Inventors: James D. Nichols, John B. Dickenson
  • Patent number: 5089584
    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 or 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 alre cationic electrodepositable (CED) compositions containing such catalysts.
    Type: Grant
    Filed: October 20, 1989
    Date of Patent: February 18, 1992
    Assignee: Air Products and Chemicals, Inc.
    Inventors: James D. Nichols, John B. Dickenson
  • Patent number: 5084486
    Abstract: A process for manufacture of molded, high resiliency, polyurethane foam substantially free of volatile organic blowing agents comprising feeding at least three streams into a mixing device to form a reaction mixture, wherein a first stream contains (i) a polyol, (ii) water, (iii) a catalyst, (iv) a surfactant; a second stream contains an organic polyisocyanate; and a third stream contains (i) water, (ii) a crosslinking/extending agent, and (iii) a process/foam modifier.
    Type: Grant
    Filed: December 20, 1990
    Date of Patent: January 28, 1992
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: William Patten, Keith D. Cavender, Frank E. Critchfield
  • Patent number: 5075343
    Abstract: Flame retardant polyurethane foams are produced by mixing and reacting a polyol, a low molecular weight compound with 1 or more active hydrogen, an organic polyisocyanate and an acidic boron compound in the presence of an organo-metal urethane catalyst.The flame-retardant polyurethane foam may be used for thermal and sound insulation, for cushioning and for molding useful objects.
    Type: Grant
    Filed: November 16, 1989
    Date of Patent: December 24, 1991
    Inventor: David H. Blount
  • Patent number: 5039712
    Abstract: Open-celled, elastic, flexible polyurethane foams are made without using a chlorofluorocarbon blowing agent. A polyisocyanate is reacted with a polyether in the presence of water and from about 0.1 to abour 10% by weight (based on polyether) of an organic blowing agent selected from dicarbonic acid alkyl esters, dicarbonic acid cycloalkyl esters, dicarbonic acid benzyl esters and combinations thereof. Optional starting materials include catalysts, chain lengthening agents, emulsifiers and other commonly used additives.
    Type: Grant
    Filed: February 26, 1991
    Date of Patent: August 13, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventor: Martin Brock
  • Patent number: 5011647
    Abstract: Active hydrogen-containing compositions having internal mold release components are used in a process in preparing molded polymeric products. In the process, the active hydrogen-containing composition contains (a) a primary or secondary amine, (b) a carboxylic acid or amido carboxylic acid salt of a group II metal or of aluminum, lithium, copper, iron, cobalt or nickel, and optionally (c) a carboxylic acid or amido carboxylic acid.
    Type: Grant
    Filed: June 21, 1989
    Date of Patent: April 30, 1991
    Assignee: The Dow Chemical Company
    Inventors: Louis W. Meyer, Robert Carswell, J. Alan Vanderhider
  • Patent number: 5008033
    Abstract: Active hydrogen-containing compositions having internal mold release components for use in preparing molded polymeric products are disclosed which contain (a) a primary or secondary amine, (b) a carboxylic acid or amido carboxylic acid salt of a group II metal or of aluminum, lithium, copper, iron, cobalt or nickel, and optionally (c) a carboxylic acid or amido carboxylic acid.
    Type: Grant
    Filed: June 12, 1989
    Date of Patent: April 16, 1991
    Assignee: The Dow Chemical Company
    Inventors: Louis W. Meyer, J. Alan Vanderhider, Robert Carswell
  • Patent number: 4980386
    Abstract: A method for the manufacture of shock attenuating, low rebound polyurethanes in which polyols are reacted with polyisocyanates having a functionality of at least 2.3 at an isocyanate index of from about 65 to about 90.
    Type: Grant
    Filed: April 28, 1989
    Date of Patent: December 25, 1990
    Assignee: Polymer Dynamics Technology, Inc.
    Inventors: Wen-Yu Tiao, Chin-Sheng Tiao
  • Patent number: 4957944
    Abstract: Certain dimethylamino alkyleneoxy isopropanols obtained by propoxylation of dimethylamino alkanols and ethers is used as a catalyst for preparing polyurethane foam.
    Type: Grant
    Filed: June 16, 1989
    Date of Patent: September 18, 1990
    Assignee: Union Carbide Chemicals and Plastics Company Inc.
    Inventors: Reinhart Schiffauer, Walter Buchmuller
  • Patent number: 4876019
    Abstract: Internal mold release compositions for use in preparing molded polymeric products are disclosed which contain (a) a primary or secondary amine (b) a carboxylic acid or amido carboxylic acid salt of a group II metal or of aluminum, lithium, copper, iron, cobalt or nickel, and optionally (c) a carboxylic acid or amido carboxylic acid.
    Type: Grant
    Filed: January 12, 1984
    Date of Patent: October 24, 1989
    Assignee: The Dow Chemical Company
    Inventors: Louis W. Meyer, James A. Vanderhider, Robert Carswell
  • Patent number: 4830883
    Abstract: Open-cell structures are filled with polyimide foam formed in place by the use of a foam precursor in powdered form comprised of a combination of (a) the reaction product of an excess of organic polyisocyanate and a member selected from the group consisting of furfuryl alcohol and condensation products thereof, and (b) an organic polycarboxylic compound containing two carboxylic anhydride groups. The precursor is prepared by combining the species under conditions which favor the reaction of the furfuryl alcohol with the polyisocyanate, but not the polyimide-forming reaction. The polyimide-forming reaction itself is then performed by adding preselected amounts of the powdered precursor, depending on the desired ultimate density of the foam, to each cell of the open-cell structure, then heating to initiate the polyimide reaction, and permitting the carbon dioxide generated by the reaction to escape while confining the resulting foam to the cells.
    Type: Grant
    Filed: June 22, 1988
    Date of Patent: May 16, 1989
    Assignee: Hexcel Corporation
    Inventor: Kyu W. Lee
  • Patent number: 4824874
    Abstract: Open-cell structures are filled with polyimide foam formed in place by the use of a foam precursor in powdered form comprised of a combination of (a) the reaction product of an excess of organic polyisocyanate and a member selected from the group consisting of furfuryl alcohol and condensation products thereof, and (b) an organic polycarboxylic compound containing two carboxylic anhydride groups. The precursor is prepared by combining the species under conditions which favor the reaction of the furfuryl alcohol with the polyisocyanate, but not the polyimide-forming reaction. The polyimide-forming reaction itself is then performed by adding preselected amounts of the powdered precursor, depending on the desired ultimate density of the foam, to each cell of the open-cell structure, then heating to initiate the polyimide reaction, and permitting the carbon dioxide generated by the reaction to escape while confining the resulting foam to the cells.
    Type: Grant
    Filed: September 9, 1986
    Date of Patent: April 25, 1989
    Assignee: Hexcel Corporation
    Inventor: Kyu W. Lee
  • Patent number: 4806573
    Abstract: Open-cell structures are filled with polyimide foam formed in place by the use of a foam precursor in powdered form comprised of a combination of (a) the reaction product of an excess of organic polyisocyanate and a member selected from the group consisting of furfuryl alcohol and condensation products thereof, and (b) an organic polycarboxylic compound containing two carboxylic anhydride groups. The precursor is prepared by combining the species under conditions which favor the reaction of the furfuryl alcohol with the polyisocyanate, but not the polyimide-forming reaction. The polyimide-forming reaction itself is then performed by adding preselected amounts of the powdered precursor, depending on the desired ultimate density of the foam, to each cell of the open-cell structure, then heating to initiate the polyimide reaction, and permitting the carbon dioxide generated by the reaction to escape while confining the resulting foam to the cells.
    Type: Grant
    Filed: June 22, 1988
    Date of Patent: February 21, 1989
    Assignee: Hexcel Corporation
    Inventor: Kyu W. Lee
  • Patent number: 4772639
    Abstract: The present invention is directed to a process for the production of light-resistant, optionally foamed elastomeric molded polyurethanes by reacting(a) organic polyisocyanates which are either mixtures of isophorone diisocyanate with polyisocyanates containing isocyanurate groups and based on 1,6-diisocyanatohexane or mixtures of IPDI with polyisocyanates containing isocyanurate groups and based on 1,6-diisocyanato-hexane and IPDI with organic compounds containing isocyanate-reactive groups in the presence of catalysts, wherein the components are reacted together inside closed molds in an isocyanate index of about 70 to 130.The present invention is additionally directed to the elastomeric polyurethanes prepared by this process.
    Type: Grant
    Filed: January 11, 1988
    Date of Patent: September 20, 1988
    Assignee: Bayer Aktiengesellschaft
    Inventors: Friedhelm Pilger, Ulrich Knipp, Reinhard Halpaap