Contains Polyhydroxy Reactant; Or Additional Polymer Derived From -n=c=x And Polyhydroxy Reactant Patents (Class 525/458)
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Patent number: 5525681Abstract: Polyurea polymers prepared from formulations including a polyisocyanate, a polyamine and a polyepoxide can have good heat stability and good physical properties in the substantial absence of uretidine diones and isocyanurates. The polymers can be prepared in one step of admixing and heating at greater than 150.degree. C. or in a two step process by first admixing the components at less than 130.degree. C. and then postcuring the product at greater than 150.degree. C. The polyurea polymer, after postcuring, can have substantially no residual epoxy or oxazolidinone groups. These polymers were particularly useful for applications which require the exposure of the polyurea polymers to both intermittent high temperatures and high humidity. The polyurea polymers of the present invention can withstand higher temperatures than conventional polyurea polymers without blistering.Type: GrantFiled: April 13, 1995Date of Patent: June 11, 1996Assignee: The Dow Chemical CompanyInventors: Benny G. Barron, Shenghong Dai, James R. Porter
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Patent number: 5523344Abstract: Adhesive formulations are blends of aqueous polymer dispersions and a hydrophobic plasticizer. The blended dispersed polymers include at least one hard sulfonated polyester urethane, at least one soft non-sulfonated polyester urethane, and at least one polar non-polyurethane water-based polymer or copolymer. A high molecular weight elastomeric non-sulfonated polyurethane polymer and a crosslinker are optional further components in the blend. The formulations are useful as non-heat activating, one-component adhesives which generate excellent green strength, water and heat resistant bonds.Type: GrantFiled: June 7, 1995Date of Patent: June 4, 1996Assignee: H. B. Fuller Licensing & Financing, Inc.Inventors: Mike Maksymkiw, Gray Haider, Michael Dochniak, Leonard Jannusch, Paul Wade
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Patent number: 5516857Abstract: Thermoplastic urethane elastomeric alloys are obtained by melt compounding at least one first component that is a polyurethane elastomer having at least one plasticizer reacted therein, this first component being formed by heating a reaction mixture comprising at least one isocyanate having a functionality of less than about 2.2, at least one long chain polyol, at least one chain extender and at least one plasticizer in specified amounts at a temperature of at least about 330.degree. F. (165.6.degree. C.), with at least one second component that is another thermoplastic elastomer not within the definition of the first component.Type: GrantFiled: June 7, 1995Date of Patent: May 14, 1996Assignee: REFAC International, Ltd.Inventor: William H. Mann
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Patent number: 5514747Abstract: A method for preparing a polyamide-imide-modified polyurethane varnish composition for coating a conductive wire to form a varnished wire. The method comprises the steps of: (a) preparing a first intermediate reaction product, which is an isocyanate compound, (b) preparing a second intermediate reaction product, which is a hydroxy compound, and (c) mixing the first and second intermediate reaction products with a diluent to form the polyamide-imide-modified polyurethane varnish composition. The first intermediate reaction comprises the steps of: (I) preparing a first reaction mixture containing a phenol or a derivative of phenol, a diisocyanate, and a dihydroxy compound in a first organic solvent, and reacting the first reaction mixture at room temperature; (ii) adding a diacid compound or trimellitic anhydride or mixture thereof to the first reaction mixture, and reacting at 100.degree..about.140.degree. C.Type: GrantFiled: February 17, 1995Date of Patent: May 7, 1996Assignee: Industrial Technology Research InstituteInventors: Sheng Yaw Hsu, Tzong-Ming Lee
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Patent number: 5498782Abstract: Distortion control additives are disclosed which comprise a polyisocyanate, a polyol or polyol blend having a hydroxyl functionality of 2 to 3 hydroxyl groups per molecule and an average molecular weight of at least about 500 grams per gram mole, a diol chain extender having from about 2 to 35 carbon atoms per molecule and an acrylate or methacrylate having an acrylate functionality of from 1 to 5 acrylate groups per molecule. Ultraviolet-curable liquid compositions comprising an unsaturated polymeric resin, a monomer and the distortion control additives of the present invention are also disclosed. The distortion control additives can provide substantial reductions in distortion, e.g., shrinkage, of objects produced by ultraviolet curing, e.g., stereolithography.Type: GrantFiled: September 8, 1993Date of Patent: March 12, 1996Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventor: Gary C. Rex
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Patent number: 5484853Abstract: A two-part adhesive composition having superior adhesive strength at cryogenic temperatures contains a urethane resin composition part and a hardener part. The urethane resin composition part comprises 50 to 99% by weight of a modified polyurethane prepolymer having an epoxy group at each of its respective ends and 1 to 50% by weight of a modified urethane compound having substantially no ether cyanate (NCO) groups and at least two epoxy groups per molecule and a molecular weight of less than 800 daltons. The hardener part is a polyamine containing primary or secondary amine groups. The equivalent ratio of the amine groups of the polyamine to the epoxy groups of the urethane resin composition part is 0.5 to 2.0.Type: GrantFiled: July 28, 1993Date of Patent: January 16, 1996Assignee: China Technical Consultants, Inc.Inventors: Der-Shyang Chen, Hung-Chung Hsia, Chen-Chi M. Ma, Wang-Nang Wang
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Patent number: 5458935Abstract: The invention provides a thermoplastic polyurethane elastomer which contains a blend of polyurethane resins and is suitable for use in the form of tubing. The blend has a tensile strength of more than 7000 psi and an ultimate elongation greater than 200%. The blend contains about 50% to about 80% by weight of an elastomeric polyurethane resin having a hardness in the range of about 60 to 70 Shore D units. The blend additionally contains about 20% to about 50% of a relatively rigid polyurethane resin having a hardness of about 10 units more than the elastomeric resin. The invention also provides methods for using and methods for manufacturing tubing fabricated from the thermoplastic polyurethane elastomer. Preferred extrusion conditions are described.Type: GrantFiled: October 12, 1993Date of Patent: October 17, 1995Assignee: Abbott LaboratoriesInventor: Bernard G. Alzner
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Patent number: 5436302Abstract: A blend of isocyanate-terminated polyurethane prepolymers is provided. The blend consists essentially of a first crystalline prepolymer based upon polyhexamethylene adipate and a second prepolymer based upon polytetramethylene ether glycol.Type: GrantFiled: June 10, 1994Date of Patent: July 25, 1995Assignee: Minnesota Mining and Manufacturing CompanyInventors: Charles W. Stobbie, IV, John C. Tangen, Lani S. Kangas
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Patent number: 5422385Abstract: An isocyanate-based elastomer containing a filler material, the filler material being present at a level in the range of from about 30% to about 90% by weight of the elastomer and having a specific gravity of less than about 2.0. A process for producing the isocyanate-based elastomer is also disclosed. The process comprises the steps of: providing a first mixture comprising a catalyst and a filler material, the filler material being wetted by the catalyst; providing a second mixture comprising an isocyanate and an active hydrogen-containing compound; mixing the first mixture and the second mixture to provide a reaction mixture; allowing the reaction mixture to react to produce the isocyanate-based elastomer.Type: GrantFiled: September 17, 1993Date of Patent: June 6, 1995Assignee: Woodbridge Foam CorporationInventor: Paul V. Farkas
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Patent number: 5415799Abstract: A cleaning composition for removing reactive polyurethane (PUR) hot melt adhesives from production and processing devices, machines and equipment which includes at least one reactive monofunctional hydroxyl compound which can react with the reactive isocyanate groups of the hot melt adhesive. The monohydroxy functional compound of the invention's clean composition completely saturates the remaining NCO groups of the hot melt adhesive to be removed, converting the adhesive into non-reactive, meltable compounds which are soluble in the cleaning composition.Type: GrantFiled: February 28, 1994Date of Patent: May 16, 1995Assignee: H. B. Fuller CompanyInventor: Franz Maitz
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Patent number: 5410001Abstract: The invention relates to a cathodic electro-dipping process wherein the electro-dipping primer employed contains a crosslinking agent which can be obtained by(I) reacting, in a first stage,(a) diphenylmethane diisocyanate and(b) a monoalcohol or a mixture of monoalcohols to give an intermediate product (A) containing isocyanate groups, and(II) reacting this intermediate product (A) in a second stage with(c) a polyol or a mixture of polyols to give an intermediate product (B) containing hydroxyl groups which(III) is reacted in a third stage either with(d) a cycloaliphatic, aliphatic or araliphatic polyisocyanate or a mixture of such polyisocyanates and(e) a monofunctional masking agent or a mixture of such masking agents or with(f) a partially-masked polyisocyanate prepared from (d) and (e)to give a crosslinking agent which is free from isocyanate groups.Type: GrantFiled: March 23, 1994Date of Patent: April 25, 1995Assignee: BASF Lacke & Farben AktiengesellschaftInventors: Gunther Ott, Ulrich Heimann, Walter Jouck, Udo Reiter, David J. Santure
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Patent number: 5367036Abstract: A moisture-curable urethane-based sealing composition is made up of an urethane prepolymer and a polyurethane compound blended together in specified amounts. The urethane prepolymer is derivable by reacting a selected class of polyether polyols with a selected class of polyisocyanate compounds. The polyurethane compound is available by reacting a selected class of polyether or polyester polyols with a selected class of polyisocyanate compounds, followed by reaction of the resulting prepolymer with a selected class of monoalcohols to thereby binder all isocyanate groups in the prepolymer. The ultimate sealant is adequate in initial adhesion strength, low in glass transition temperature and resistant to moist heat.Type: GrantFiled: October 23, 1992Date of Patent: November 22, 1994Assignee: The Yokohama Rubber Co., Ltd.Inventors: Hitoshi Saito, Tetsuji Kitamura, Hideyuki Matsuda, Masamichi Danjo, Eiji Nishi
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Patent number: 5350811Abstract: An adhesive composition comprising (a) an epoxy resin obtained by reacting a 1,3-bis(dicarboxyphenyl)-1,1,3,3-tetrasubstituted disiloxane dianhydride with an alcohol or alcohol derivative, followed by reaction with an epoxy compound having two or more epoxy groups, or an epoxy resin obtained by reacting a 1,3-bis(dicarboxyphenyl)-1,1,3,3-tetrasubstituted disiloxane with an epoxy compound having two or more epoxy groups and (b) a curing agent is suitable for bonding semiconductor chips to a copper frame with a small warpage of the chips.Type: GrantFiled: June 17, 1993Date of Patent: September 27, 1994Assignee: Hitachi Chemical Co. Ltd.Inventors: Nobuo Ichimura, Mitsuo Yamazaki, Kohei Fujita, Hidetaka Satou, Yasuo Miyamoto, Masao Kawasumi, Tohru Kikuchi
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Patent number: 5342873Abstract: A reactive, after cooling still viscous-plastic moldable hot-melt adhesive contains a mixture ofat least one thermoplastic material,at least one binder on isocyanate basis, andat least one thixotropic agent,and the isocyanate content, referred to the total of the hot-melt adhesive, is in the range from 0.01 to 10 percent by weight.Type: GrantFiled: November 19, 1993Date of Patent: August 30, 1994Assignee: Sika AG, vorm. Kaspar Winkler & Co.Inventors: Peter W. Merz, Lutz Zabel, Christian Fischer
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Patent number: 5342889Abstract: The present invention relates to electrostatic dissipative polymeric compositions comprising an effective amount of a chain extended polymer and a matrix polymer or matrix polymer blend. The chain extended polymer of the subject invention has electrostatic dissipative properties and is formed from low molecular weight polyethers which are reacted with a chain extender to furnish a useful additive.Type: GrantFiled: July 10, 1991Date of Patent: August 30, 1994Assignee: The B. F. Goodrich CompanyInventors: Francis R. Sullivan, Elaine A. Mertzel, Edmond G. Kolycheck
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Patent number: 5338763Abstract: Compounds containing alcoholic hydroxyl groups suitable as a starting material for the isocyanate polyaddition process by the alcoholysis of polyisocyanate polyaddition products are produced. Polyurethane urea or polyurea waste products having a molar ratio of urea groups to urethane groups of from 1:20 to 1:0 are heated in size reduced form to temperatures of from 120.degree. to 250.degree. C. together with B) polyhyhdric alcohols in the molecular weight range of from 62 to 250 in a ratio by weight of A:B of from 3:1 to 1:10. At least 10% of the polyhydric alcohol B put into the process is subsequently removed by distillation under reduced pressure. A total of up to 1000% by weight, based on the weight of polyurethane urea or polyurea waste A, of one or more polyhydroxy compounds having a molecular weight above 250 which is (are) not volatile under the distillation conditions may optionally be added to the mixture before and/or after removal of the excess alcohol B by distillation.Type: GrantFiled: December 4, 1992Date of Patent: August 16, 1994Assignee: Bayer AktiengesellschaftInventors: Thomas Munzamy, Werner Rasshofer, Karl-Heinz Dorner, Ulrich Limna
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Patent number: 5334689Abstract: Process for preparing a flexible foam by reacting an isocyanate prepolymer having a free NCO content of 2-15% by weight, an isocyanate prepolymer having a free content of 25-31% by weight and an isocyanate-reactive composition comprising water.Type: GrantFiled: January 12, 1994Date of Patent: August 2, 1994Assignee: Imperial Chemical Industries PLCInventors: Louis Muller, Gabriel Verhelst
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Patent number: 5331044Abstract: The present invention deals with low temperature impact resistant, easily flowing, thermoplastic polyurethane elastomer compositions, comprising:A) 5-95 parts by weight of at least one thermoplastic polyurethane elastomer (A) having a Shore A hardness less hah 95; andB) 95-5 parts by weight of at least one thermoplastic polyurethane elastomer (B) having a Shore A hardness greater than 98, whereby the parts by weight of (A) and (B) total 100 parts by weight; andC) 0-60 weight percent based on the weight of (A) and (B) of a reinforcing filler.The products are prepared by melting together polyurethane elastomers (A) and (B) at temperatures of from 140.degree.-250.degree. C., preferably in an extruder, and are most preferred for the preparation of ski boots and injection molded articles for motor vehicles.Type: GrantFiled: February 7, 1990Date of Patent: July 19, 1994Assignee: BASF AktiengesellschaftInventors: Deitrich Lausberg, Rolf Steinberger, Walter Heckmann, Harald Schulz
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Patent number: 5283298Abstract: The present invention is directed to a hydrophilic composition which is the reaction product of a polyvinylpyrrolidone, an organic monoisocyanate, and an oxyalkylene group containing mono- or di- hydroxyl compound.Type: GrantFiled: July 20, 1993Date of Patent: February 1, 1994Assignee: Miles Inc.Inventors: Ashok M. Sarpeshkar, Peter H. Markusch, Charles S. Gracik
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Patent number: 5281677Abstract: A thermoplastic polyurethane chain extended with an alkylenediol is blended with a thermoplastic polyurethane chain extended with an oxyalkylene qlycol oligomer. The blend is extruded into a catheter tubing having sufficient initial stiffness for satisfactory insertion in a patient and a high degree of softening for safe positioning and long term catheterization procedures without the risk of vessel wall perforation.Type: GrantFiled: September 3, 1992Date of Patent: January 25, 1994Assignee: Becton, Dickinson and CompanyInventors: Theo O. Onwunaka, Fidelis C. Onwumere, James M. Lambert
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Patent number: 5281654Abstract: This invention is directed to a polyurethane mixture. More particularly, there is provided a mixture polyurethanes comprising a first polyurethane with at least two end groups, where each end group comprises a terminal isocyanate and a polyether; a second polyurethane with at least two end groups, where each end group comprises a terminal isocyanate group and a non-functional group; and a third polyurethane with at least two end groups, where one end group comprises a terminal isocyanate and a polyether and one other end group comprises a terminal isocyanate and a non-functional group. A method for improving the sag resistance of an aqueous composition is also provided. This method permits the formulation of aqueous compositions which resist the tendency to sag. The polyurethane mixture of this invention is useful for thickening aqueous compositions such as paints, coatings, cosmetics, personal care items, hair shampoos and conditioners, cleaners, and the like.Type: GrantFiled: January 14, 1993Date of Patent: January 25, 1994Assignee: Rohm and Haas CompanyInventors: Eric K. Eisenhart, Paul R. Howard, Rodney L. Randow, Rafael G. Aviles
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Patent number: 5270348Abstract: Process for preparing a flexible foam by reacting an isocyanate prepolymer having a free NCO content of 2-15% by weight, an isocyanate prepolymer having a free content of 25-31% by weight and an isocyanate-reactive composition comprising water.Type: GrantFiled: April 12, 1993Date of Patent: December 14, 1993Assignee: Imperial Chemical Industries plcInventors: Louis Muller, Gabriel Verhelst
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Patent number: 5252671Abstract: The present invention relates to coating compositions containing(A) 70 to 98% by weight, based on the sum of components (A) and (B), of(a) isocyanate-free polymers of ethylenically unsaturated monomers and/or polyurethanes or blocked isocyanate prepolymers, and(b) optional organic solvents,wherein component (A) contains no significant quantities of groups capable of reacting with component (B) or starting materials thereof and has a viscosity (at 23.degree. C.) of 2000 to 100,000 mPa.s;(B) 2 to 30% by weight, based on the sum of components (A) and (B), of a polyaddition product prepared in and dispersed in component (A), wherein the polyaddition product is a polyurethane, polyurethane urea, polyurea, or mixture thereof, containing ionic groups and/or potentially ionic groups in a quantity corresponding to from 0.Type: GrantFiled: May 21, 1992Date of Patent: October 12, 1993Assignee: Bayer AktiengesellschaftInventors: Josef Pedain, Klaus Noll, Wilhelm Thoma, Detlef-Ingo Schutze
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Patent number: 5252683Abstract: A coating composition useful for shatter-proofing glass, capable of forming a film which allows an elongation of at least 400%. The coating composition includes (A) a polyurethane compound obtained by reaction of (a) a polycarbonate diol and/or (b) an aliphatic polyester diol, (c) an organic diisocyanate and (d) a chain extender possessing an active hydrogen-containing group in amounts to give an isocyanate group/active hydrogen-containing group equivalent ratio not exceeding 1.0, (B) an organic polyisocyanate compound and (C) a reactive silicone oil.Type: GrantFiled: March 29, 1991Date of Patent: October 12, 1993Assignee: Toyo Boseki Kabushiki KaishaInventors: Hiroshi Murata, Masami Oka, Hiroshi Fujimoto
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Patent number: 5248731Abstract: Thermoplastic synthetic polymeric compositions of certain polyurethanes, polyamides or chlorinated polyolefins, having processing temperatures in the range of about 150.degree. to 325.degree. F., can be modified by the addition of a millable thermoplastic polyurethane elastomer thereto to lower the processing temperature by 10.degree. to 30.degree. F. or more. This modification enables the thermoplastic composition to be processed on conventional calendering or extrusion equipment with a lesser amount of energy or with better performance. Also, coated fabrics of such thermoplastic compositions and a fiber reinforcement.Type: GrantFiled: March 20, 1989Date of Patent: September 28, 1993Assignee: Reeves Bros. Inc.Inventors: Fred N. Teumac, John R. Damewood, Jill R. Menzel
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Patent number: 5238999Abstract: A one component composition suitable for coating a substrate, including at least one crosslinker having a functionality thereon that is reactive with a functionality on at least one film forming polymer. The crosslinker includes at least one member selected from the group consisting of: blocked isocyanurates of isophorone diisocyanate; derivatives of blocked isocyanurates of isophorone diisocyanate; blocked biurets of isophorone diisocyanate; derivatives of blocked biurets of isophorone diisocyanate. The composition preferably includes a blend of this crosslinker with a second crosslinker, wherein the second crosslinker is at least one member selected from the group consisting of: blocked isocyanurates of hexamethylene diisocyanate; derivatives of blocked isocyanurates of hexamethylene diisocyanate; blocked biurets of hexamethylene diisocyanate; and derivatives of blocked biurets of hexamethylene diisocyanate.Type: GrantFiled: July 14, 1992Date of Patent: August 24, 1993Assignee: BASF CorporationInventors: Vincent C. Cook, James R. Eshelman, Edward A. Guerrini
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Patent number: 5234996Abstract: A two-part polyurethane adhesive which comprises a main component comprising a hydroxyl-terminated saturated polyester resin or a polyester urethane rubber prepared by reacting said hydroxyl-terminated saturated polyester resin with a diisocyanate compound, and a curing agent comprising a urethane prepolymer having an active isocyanate group which is prepared by reacting a hydrogenated hydroxyl-terminated polybutadiene with an excess amount of a polyisocyanate. Said polyurethane adhesive is useful for adhering a polyolefin base material and a covering material for the production of automobile interior parts.Type: GrantFiled: March 11, 1991Date of Patent: August 10, 1993Assignee: Sunstar Giken Kabushiki KaishaInventors: Masahito Mori, Kousuke Torii, Hirokazu Okamoto
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Patent number: 5194503Abstract: A non-isocyanate flexibilizer additive is provided which finds utility in coating systems such as alkyds, polyesters, acrylic/polyester, alkyd/acrylic, carboxy/epoxy, polyether/urethane, epoxy/polyester, other epoxy, and urea and melamine formaldehyde systems. The non-isocyanate functional flexibilizer has the formula; B--C(O)--NW--A--NX--C(O)--K wherein A is selected from the group consisting fundamentally of polyesters, polyamides, polyureas, polyurethanes, acrylics; biuret, allophonate and urethane extended polyesters; wherein B and K are selected from the group consisting of --OR and --Z--R'--SiOR".sub.(3-n) R"".sub.n wherein R' is a divalent lower alkyl radical of from 1 to 18 carbon atoms, R is a lower alkyl radical of from 1 to 18 carbon atoms, Z is a member selected from the group consisting of S and NR", W and X are selected from H and lower alkyl radicals of from 1 to 10 carbon atoms, wherein R", R" and R"" are H or a lower alkyl radical of from 1-18 carbon atoms, and wherein n is 0, 1 or 2.Type: GrantFiled: July 7, 1992Date of Patent: March 16, 1993Assignee: BASF CorporationInventors: Gerald L. Bajc, Thomas E. Noseworthy, James M. Cameron
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Patent number: 5173538Abstract: A quick-setting, moisture-curing hot-melt polyurethane composition having a first polyether-based polyurethane prepolymer having a Tg above room temperature and a second polyurethane prepolymer with a Tg below room temperature, the first prepolymer being prepared from a low molecular weight polyether; preferably the second prepolymer is also polyether based and prepared from a high molecular weight polyether.Type: GrantFiled: October 17, 1989Date of Patent: December 22, 1992Assignee: Bostik, Inc.Inventors: Heinz G. Gilch, Walter Rath
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Patent number: 5162457Abstract: This invention relates to crystalline, isocyanate group-containign hot melt adhesives based onfrom 70-95% by weight of a prepolymer A based on polyester diols having a molecular weight of from 1500 to 10,000 and melting points of from 50.degree. to 90.degree. C. and diisocyanates in a ratio of isocyanate groups of the diisocyanate to the hydroxyl groups of the polyester diol of from 3:1 to 1.2:1 andfrom 5-30% by weight of a component B having a molecular weight of from 1000 to 10,000 based on polyesters having melting points of from 60.degree. to 150.degree. C., in which component B contains at most 0.5 Zerewitinow active groups per molecule.Type: GrantFiled: October 31, 1991Date of Patent: November 10, 1992Assignee: Bayer AktiengesellschaftInventors: Eduard Hansel, Walter Meckel, Klaus Konig, Otto Ganster, Horst Stepanski
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Patent number: 5143987Abstract: The present invention is directed to a polyurethane reactive adhesive compound comprising:A) one or more polyisocyanates having an inactivated particle surface,B) at least one isocyanate reactive compound having a molecular weight MG.sub.w greater than 400, andC) finely dispersed polymer particles, wherein the polymer is solid at temperatures below 70.degree. C. and has a molecular weight MG.sub.w of at least 3000.Type: GrantFiled: September 5, 1990Date of Patent: September 1, 1992Assignee: Bayer AktiengesellschaftInventors: Eduard Hansel, Heinrich Hess, Gunter Arend, Gerhard Grogler, Richard Kopp
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Patent number: 5137972Abstract: A two component composition suitable for coating a substrate comprises at least one crosslinker having a functionality thereon which is reactive with a functionality on at least one film forming polymer present in a separate component of the composition. The crosslinker comprises at least one member selected from the group consisting of: (1) an isocyanurate of isophorone diisocyanate; (2) a derivative of an isocyanurate of isophorone diisocyanate; (3) a biuret of isophorone diisocyanate; and (4) a derivative of a biuret of isophorone diisocyanate. The composition preferably comprises a blend of the this crosslinker with a second crosslinker, wherein the second crosslinker is at least one member selected from the group consisting of: (1) an isocyanurate of hexamethylene diisocyanate; (2) a derivative of an isocyanurate of hexamethylene diisocyanate; (3) a biuret of hexamethylene diisocyanate; and (4) a derivative of a biuret of hexamethylene diisocyanate.Type: GrantFiled: August 29, 1991Date of Patent: August 11, 1992Assignee: BASF CorporationInventor: Vincent C. Cook
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Patent number: 5130384Abstract: The processing temperature of linear thermoplastic polyurethane elastomers prepared from a polycarbonate polyol, a polyether polyol, an extender and a disocyanate compound which has been modified by reaction with a low molecular weight diol to form a modified diisocyanate compound prior to reaction with the other components of the elastomer, can be reduced by adding a millable thermoplastic linear polyurethane elastomer thereto. These materials possess an optimum combination of hydrolytic stability, toughness, flexibiity and low temperature processing characteristics.Type: GrantFiled: March 20, 1989Date of Patent: July 14, 1992Assignee: Reeves Brothers, Inc.Inventors: John R. Damewood, Jill R. Menzel, Fred N. Teumac, Bert A. Ross
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Patent number: 5089571Abstract: High molecular weight thermoplastic polyurethane resins with narrow molecular weight distribution and good physical properties are prepared by regenerating thermally degraded and/or off-grade thermoplastic polyurethane resins. The regenerated high molecular weight thermoplastic polyurethane resins do not present any processing difficulties inherent to high molecular weight resins.Type: GrantFiled: December 4, 1990Date of Patent: February 18, 1992Assignee: The Dow Chemical CompanyInventors: Henry W. Bonk, Augustin T. Chen, Benjamin S. Ehrlich
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Patent number: 5068280Abstract: Polyurethane and/or polyurea dispersions are prepared by reacting certain coreactants with a polyisocyanate in the presence of a preformed polyurethane and/or polyurea dispersion. The resulting products are epsecially useful to prepare flexible polyurethane foams which exhibit low shrinkage. In addition, polyurethane and/or polyurea dispersions having a bimodal particle size distribution are disclosed.Type: GrantFiled: September 12, 1989Date of Patent: November 26, 1991Assignee: The Dow Chemical CompanyInventors: Jack M. Pal, James P. Cosman, Karen Tan
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Patent number: 5066733Abstract: Disclosed is a liquid coating composition, useful for making a chip resistant coating, comprising a binder of: a first and a second urethane resin each containing terminal, reactive ethylenically unsaturated groups. Each urethane resin is prepared by reacting components comprising (A) an isocyanate-terminated prepolymer which is the product of reacting an organic polyisocyanate with an organic polyol with (B) an isocyanate reactive group-containing unsaturated monomer selected from hydroxyalkyl acrylates, hydroxyalkyl methacrylates and hydroxyalkyl acrylamides. The organic polyol for the first urethane resin has a hydroxyl functionality of 3 or more; the organic polyol for the second urethane resin has a hydroxyl functionality of less than three; and the average functionality of the polyols utilized for the first and second urethane resins is less than three.Also disclosed is a method of making a cured chip resistant, coating.Type: GrantFiled: July 23, 1990Date of Patent: November 19, 1991Assignee: PPG Industries, Inc.Inventors: Jonathan T. Martz, Thomas W. Kelly, Rostyslaw Dowbenko, James A. Meier, Anthony C. Palermo
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Patent number: 5028642Abstract: An improved spandex polymer composition provides fibers or films of the composition with increased heat set efficiency and greater discoloration resistance. The composition contains zinc oxide and a polyhydroxy additive selected from certain sugars, reduced sugars and/or polyhydroxy urethanes formed from these sugars or reduced sugars and an organic diisocyanate.Type: GrantFiled: February 9, 1990Date of Patent: July 2, 1991Assignee: E. I. du Pont de Nemours and CompanyInventors: Charles W. Goodrich, William L. Evans
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Patent number: 5021520Abstract: The present invention relates to crosslinked polyurethane-polyurea powders which are prepared by a process which comprises dispersing NCO semiprepolymers in an aqueous medium, forming powders and isolating the powders from the aqueous medium, the NCO semiprepolymers having an NCO content of 10 to 20%, being liquid at room temperature and/or dissolved in isocyanate-inert, water-soluble solvents and based on the reaction product of(a) a polyisocyanate component based on at least one organic polyisocyanate with a polyol component having an average hydroxyl functionality of 2.3 to 4.0 and containing(b) a hydrophobic polyol component containing less than 25% by weight of ethylene oxide units, --CH.sub.2 --CH.sub.Type: GrantFiled: March 19, 1990Date of Patent: June 4, 1991Assignee: Bayer AktiengesellschaftInventors: Helmut Reiff, Dieter Dieterich, Rene Stepanek
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Patent number: 4999407Abstract: Quick-setting hot-melt adhesive compositions comprising a mixture of at least two polyurethane prepolymer, each providing a different glass transition point to said composition. Preferably one prepolymer has a tg above room temperature and one prepolymer has a tg below room temperature. These adhesive mixtures show an attractive blend of properties, giving quick setting bonds which are flexible immediately after bonding and which after curing have excellent heat stability and resistance to hydrolytic and chemical attack.Type: GrantFiled: May 4, 1989Date of Patent: March 12, 1991Assignee: Bostik, Inc.Inventors: Heinz G. Gilch, Karl-Heinz Albert
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Patent number: 4957959Abstract: Prepolymer composition which comprises 10 to 95% by weight of a first isocyanate-group-containing prepolymer (A) obtained by reacting an excess equivalent of an aromatic diisocyanate (c) containing an isocyanate group directly bonded to the aromatic nucleus with an oxyethylene-group-containing polyoxyalkylene polyol (a) of a relatively high molecular weight; 90 to 5% by weight of a second isocyanate-group-containing prepolymer (B) obtained by reacting an excess equivalent of an organic diisocyanate (d) not containing an isocyanate group directly bonded to the aromatic nucleus with an oxyethylene-group-containing polyoxyalkylene polyol (b) of a relatively high molecular weight; and, as the case may be, an unreacted substance of diisocyanate which has been used in the production of the respective prepolymers (A) and (B), the prepolymer composition containing the isocyanate group in a range of from 3 to 15% by weight, wherein the polyoxyalkylene polyol (a) and the polyoxyalkylene polyol (b) are either same or diType: GrantFiled: April 26, 1989Date of Patent: September 18, 1990Assignee: Asahi Glass Company, Ltd.Inventors: Yukio Matsumoto, Nobuaki Kunii
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Patent number: 4946910Abstract: This invention, therefore, relates to the field of polyurethane coatings for use in automobile basecoat/clearcoat systems. In particular, this invention relates to water-dispersible polyurethane resins having polyether sidechains which may be utilized in basecoat compositions as principal resins or grind resins. These polyurethane resins may be laterally stabilized or terminally stabilized. The terminally stabilized resins of this invention are preferably employed as principal resins in basecoat compositions.Type: GrantFiled: December 22, 1988Date of Patent: August 7, 1990Assignee: BASF Corporation, Inmont DivisionInventors: Thomas G. Savino, Thomas C. Balch, Alan L. Steinmetz, Sergio E. Balatin, Nicholas Caiozzo
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Patent number: 4942212Abstract: A polyurethane resin is composed of a polyol component, a polyisocyanate component and optionally, a chain extender component. At least a portion of the polyol component or chain extender component is a siloxane polyol component represented by the following formula (1) and/or formula (2): ##STR1## wherein R means an alkyl group, R' denotes a hydrogen atom or C.sub.1-5 alkyl group, k, l and m stand for 1-250, 0-5 and 0-50 respectively, and n is an integer of 1-3 in the formula (1) and an integer of 2-3 in the formula (2). A thermal recording material containing the polyurethane resin as a heat-resistant layer is also disclosed.Type: GrantFiled: December 6, 1988Date of Patent: July 17, 1990Assignees: Dainichiseika Color & Chemicals Mfg. Co., Ltd., Ukima Colour & Chemicals Mfg. Co., Ltd.Inventors: Kazuyuki Hanada, Kohichi Kuroda, Iwao Misaizu, Masashi Kashimura, Tomoko Goto, Katsumi Kuriyama
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Patent number: 4929667Abstract: A urethane prepolymer composition is provided comprising (a) a terminal isocyanate group-containing urethane prepolymer derived from a polytetramethylene glycol having a specific molecular weight of 700 to 1500 and an aliphatic and/or alicyclic diisocyanate and (b) a terminal isocyanate group-containing urethane prepolymer derived from a polycaprolactone diol and/or polyol having a specific molecular weight of 500 to 1500 and an aliphatic and/or alicyclic diisocyanate, the weight ratio of (a) to (b) being in the range of 80/20 to 20/80. This composition has excellent compatibility with a diol compound and/or a polyol compound, and can be formulated together with the diol compound and/or the polyol compound into a polyurethane coating composition system which forms a coating film having not only excellent weathering resistance, elastic recovery and transparency but also excellent low-temperature physical properties such as mechanical strength, flexibility and impact resistance at low temperatures, e.g., -30.Type: GrantFiled: February 1, 1989Date of Patent: May 29, 1990Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Kazuki Ban, Norio Oyabu
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Patent number: 4920173Abstract: PUR powder paints with matt surfaces that level well after baking are obtained when polymers containing hydroxyl groups with more than 2 OH groups in the molecule are reacted with blocked polyisocyanate-urea adducts of polyisocyanates and polyamines with an NCO content of 8 to 15 wt. % and a free NCO content of up to 4 wt. %.Type: GrantFiled: September 15, 1988Date of Patent: April 24, 1990Assignee: Huels AktiengesellschaftInventor: Rainer Gras
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Patent number: 4889915Abstract: High green strength curable urethane adhesive compositions of a polyol, an organic isocyanate compound, a thermoplastic polyurethane which is soluble in methyl ethyl ketone to at least 1 weight percent for imparting tack and green strength properties to the composition, and, optionally, a solvent for controlling the percent solids and viscosity of the composition.Type: GrantFiled: April 14, 1987Date of Patent: December 26, 1989Assignee: CasChem, Inc.Inventors: Melvin Brauer, Clayton C. Crawford
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Patent number: 4885348Abstract: A dispersion in an aromatic polyisocyanate of a reaction product of the polyisocyanate and an amine having the formula: ##STR1## wherein Q represents hydrogen or hydrocarbyl and R represents a hydrocarbyl radical selected from radicals of the formulae: ##STR2## or wherein R and Q together with the attached nitrogen atom form a piperidine, morpholine or pyrolidine ring bearing a hydrocarbyl radical on at least one of the carbon atoms adjacent to the nitrogen atom.Type: GrantFiled: August 19, 1988Date of Patent: December 5, 1989Assignee: Imperial Chemical Industries PLCInventors: James P. Brown, Ernst O. Duber, Mark Loenders
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Patent number: 4882408Abstract: One-component polyurethane systems contain reaction products prepared in situ from(A) monoamines and/or polyamines and/or polymeric substances having one or more amino groups and(B) mono- and/or polyisocyanates and/or polymeric substances having one or more isocyanate groupsas viscosity-regulating substances.Type: GrantFiled: July 11, 1988Date of Patent: November 21, 1989Assignee: BASF AktiengesellschaftInventor: Rainer Blum
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Patent number: 4829123Abstract: An drying resin composition comprises (A) at least one radical curable resin selected from the group consisting of an unsaturated polyester resin, an urethane-acrylic resin, a polyester-acrylic resin and an epoxy-acrylic resin, (B) an urethane-acrylic oligomer having 1.0 to 10.0 mmole/g of allyl ether groups and 0.2 to 5 mmole/g of (meth)acryloyl groups, (C) and ethylenically unsaturated monomer and (D) an initiator. The composition has an improved drying property and provides a coating film having improved flexibility, weatherability and water resistance.Type: GrantFiled: June 22, 1988Date of Patent: May 9, 1989Assignee: Nippon Gohsei Kagaku Kogyo Kabushiki KaishaInventors: Sadao Shigematsu, Mamoru Akiyama
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Patent number: 4806598Abstract: A stable, nonreactive, thermoplastic polymer blend comprising from about 10 to about 95 percent by weight of a superabsorbent, thermoplastic polymeric composition and from about 90 to about 5 percent by weight of at least one thermoplastic polymer.Type: GrantFiled: December 22, 1986Date of Patent: February 21, 1989Assignee: Kimberly-Clark CorporationInventor: Michael T. Morman
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Patent number: 4798876Abstract: Water absorptive polyurethane composition, having high mechanical strength, is formed of A. about 25% to about 75% of a hydrophilic polyether polyurethane which is the reaction product of diethylene glycol and a polyoxyethylene glycol having a molecular weight of about 1000 to about 8000 with a polyisocyanate and B. about 75% to about 25% of a hydrophobic polyester polyurethane which is the reaction product of a polyfunctional polyester derived from the condensation of a polyol with a polybasic acid with a polyisocyanate.Type: GrantFiled: November 12, 1985Date of Patent: January 17, 1989Assignee: Tyndale Plains-Hunter Ltd.Inventors: Francis E. Gould, Ellen K. Morgan, Stephen D. Reduker