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| Number | Title | Issue Date |
| 5229431 | Crack-resistant polycarbonate urethane polymer prostheses and the like An especially crack-resistant yet elastomeric and pliable polyurethane is provided as a polymer which is especially suitable for medical prosthesis, implants, roofing insulators and the like. The polymer is a polycarbonate urethane polymer which is substa... | 07/20/1993 |
| 5219973 | Polyurea rim systems The present invention is directed to a RIM process and an isocyanate reactive composition for use therein. The isocyanate composition includes an amine terminated chain extender and an aromatic amine terminated polyether of the formula: ##STR1## ... | 06/15/1993 |
| 5219975 | Process for the preparation of amines, the amines thus obtained and the use thereof as hardeners for epoxide resins The present invention is directed to a process for the preparation of amines containing urethane and urea groups. The amines are produced by reacting A) isocyanate prepolymers containing urethane groups and in which the isocyanate groups are reversibly bl... | 06/15/1993 |
| 5214120 | Dope for forming elastic polyurethane articles and process for producing said articles A dope for forming elastic polyurethane articles is prepared by using a polyol, a diisocyanate and a diamine. A solvent and a terminating agent comprising a secondary monoamine and a ketoimineamine and/or an aldoimine-amine may also be employed.... | 05/25/1993 |
| 5212230 | Aqueous polyurea dispersions prepared by an emulsion polymerization process The present invention is directed to a process for the preparation of an aqueous polyurea dispersion by a) dispersing in water at an NCO:NH equivalent ratio of 0.5:1.0 to 2.0:1.0 i) a polyisocyanate which has an average functionality of 1.5 to 4.0 and an isocy... | 05/18/1993 |
| 5209969 | Carbamate/urethane composition and textile lamination process A storage stable adhesive mixture of hexamethylenediamine carbamate and the reaction product of ethylene/propylene oxide polyol and a polyurethane prepolymer of diphenyl methane diisocyanate, polytetramethylene glycol, and optionally, 1,4-butanediol; and ... | 05/11/1993 |
| 5204196 | Solid state and conductive polymer composition A solid state and conductive polymer composition comprising a host copolymer shown in the general formula: ##STR1## wherein n is an integer in the range of 3 to 1×10-7, m is an integer in the range of 3 to 100, R is --C6 H... | 04/20/1993 |
| 5198508 | Resin compositions and molded articles There is disclosed a resin composition comprising a product produced by the reaction of (a) a prepolymer prepared by reacting a diisocyanate with a hydroxy fatty acid ester or a mixture of a hydroxy fatty acid ester and a polyether polyol, with (b) at lea... | 03/30/1993 |
| 5198522 | Reaction injection molding based on diethyl methylene diphenyl diisocyanate Disclosed herein is an improved polyurea system comprising a reaction product of a polyisocyanate and a polyamine and an amine chain extender, the improvement comprising the polyisocyanate containing diethyl methylene diisocyanate, a prepolymer thereof or... | 03/30/1993 |
| 5194488 | Two component polyurethane sealant Two-component polyurethane sealants, in particular for the direct glazing of motor vehicles, comprising (A) a pasty polyurethane component containing a polyurethane prepolymer having free isocyanate groups, and a curing agent, and (B) a pasty water-contai... | 03/16/1993 |
| 5191012 | Aqueous dispersions of encapsulated polyisocyanates The present invention is directed to an aqueous dispersion of an encapsulated polyisocyanate which contains ureacted isocyanate groups and is prepared by a) dispersing in water a polyisocyanate which has an isocyanate content of at least 12% by weight and... | 03/02/1993 |
| 5189073 | Process for the production of expanded materials based on polyurea elastomers A process for the production of expanded polyurea elastomers which comprises reacting: a) an aliphatic polyetheramine having primary amino functions and essentially no free hydroxyl groups; b) carbon dioxide in the form of carbamate, obtained by reacting carbo... | 02/23/1993 |
| 5189075 | Polyurea elastomers made using polyoxyalkylene tetra-or higher functional amine chain extenders Polyurea elastomers, made using low molecular weight polyoxyalkylene polyamines, like aminated, propoxylated -methyl glucoside, as chain extenders for reactions of polyoxyalkylene polyamine with polyisocyanate, have improved spray and foam properti... | 02/23/1993 |
| 5187253 | Method of manufacturing polyetherurethane urea amines, and use of same Polyether urethane urea amines are prepared by reacting an isocyanate prepolymer of the formula ##STR1## with a polyamine of the formula ##STR2## wherein R is an optionally alkyl-substituted alkanediyl group of 2-12 carbon atoms, or an opti... | 02/16/1993 |
| 5185420 | Thermoplastic polyurethane elastomers and polyurea elastomers made using low unsaturation level polyols prepared with double metal cyanide catalysts This invention relates to a method of fabricating a thermoplastic elastomer which comprises the steps of: (a) fabricating a polyol having a molecular weight of between about 2,000 and about 8,000 and having a level of end group unsaturation of no greater ... | 02/09/1993 |
| 5185200 | Aqueous polyisocyanate dispersions with reduced isocyanate contents and their use for the production of fiberglass mats The present invention is directed to an aqueous polyisocyanate dispersion which has an isocyanate content of at least 0.5% by weight, based on the weight of the polyisocyanate, and is prepared by a) dispersing in water a polyisocyanate which has an isocyanate ... | 02/09/1993 |
| 5175227 | Acid etch resistant coatings containing polyurethane polyols A high solids coating composition suitable for use, for example, as a high performance automotive coating is provided, which comprises (1) a particular polyurethane polyol which is the reaction product of an asymmetric diol component and an isocyanate com... | 12/29/1992 |
| 5175230 | Alkyl substituted difunctional cyclohexylisocyanates This invention pertains to alkyl substituted difunctional cyclohexylisocyanates having an isomer distribution. The isocyanates are represented by the formulas: ##STR1## wherein; R1 is C1-4 alkyl; R2 is C1-4... | 12/29/1992 |
| 5164473 | Two-component polyurethane adhesive The present invention relates to a low-viscosity two-component filled polyurethane adhesive comprising an organic polyisocyanate component and an isocyanate-reactive curative component. The curative component comprises a blend of relatively high equivalen... | 11/17/1992 |
| 5155165 | Polyurethane polyurea particles and process for production thereof Polyurethane polyurea particles are obtained by an interfacial polymerization reaction between a hydrophobic phase which is capable of forming a three-dimensional crosslinked structure by reaction and is a mixture comprising a polyisocyanate compound and ... | 10/13/1992 |
| 5151483 | Process for the production of reinforced polyurethane moldings by the reaction injection molding process The present invention is directed to a process for producing a molded part by reacting an organic isocyanate with an active hydrogen group-containing material in the presence of a reinforcing fiber mat in a closed mold via the RIM process. The key to the ... | 09/29/1992 |
| 5143996 | Primerless adhesive for fiberglass reinforced polyester substrates A two part structural polyurethane adhesive composition and a method of making that adhesive. The adhesive is useful for adhering unprimed fiberglass reinforced polyester substrates and combines an isocyanate terminated prepolymer, and aliphatic polyisocy... | 09/01/1992 |
| 5140090 | Aliphatic polyureas from polyoxyalkylene polyamines, aliphatic diisocyanates and sym-dialkylethylenediamines Disclosed is a method for preparing aliphatic polyureas in varying reaction times which comprises reacting polyoxyalkylene polyamines, an aliphatic diisocyanate and a sym-dialkylethylenediamine.... | 08/18/1992 |
| 5126424 | Curing component for synthetic resins, curable mixtures containing same, and the use thereof Products of the reaction of (a) a polyisocyanate, (b) a CH-active alkyl ester, (c) a polyoxyalkyleneamine and (d) if appropriate a further NH- and/or OH-reactive compound as the curing component for binders (B) which contain groups which are capable of am... | 06/30/1992 |
| 5124400 | Aqueous polyurethane dispersions and adhesives based thereon The invention is related to an adhesive comprising a stable, fine particle size aqueous dispersion of polyurethane-urea which is the reaction product of an isocyanate-terminated prepolymer with an amine-containing chain extending agent which is characteri... | 06/23/1992 |
| 5118728 | Spray polyurea elastomers using chopped glass roving A spray polyurea elastomer is made in combination with a filler material by spraying together two reactive elastomers and dispensing filler material into the spray pattern.... | 06/02/1992 |
| 5115071 | High performance polyurethane coating compositions and processes for making same This invention relates to polyurethane coatings formed from prepolymers made by reacting polyisocyanates with long chain polyols having an average functionality of greater than 2. The resulting prepolymers have equivalent weights greater than about 250 gr... | 05/19/1992 |
| 5112933 | Ether-based polyurethane elevator sheave liner-polyurethane-urea made from polyether urethane prepolymer chain extended with polyester/diamine blend An ether-based polyurethane article comprises a toluene diisocyanate-terminated polyether polyol prepolymer cured with a blended polyester polyol/diamine curative. The article may be made by mixing a toluene diisocyanate-terminated polyether polyol prepol... | 05/12/1992 |
| 5110892 | Single pack polyurethane adhesive Stirrable reactive polyurethane adhesive compositions are packaged in a single container by separating the reactive components with a disperable barrier layer so as to delay reaction until the entire adhesive composition is stirred together.... | 05/05/1992 |
| 5109034 | Storage stable solid isocyanate compositions, preparation, and method of use thereof This invention relates to a storage-stable solid isocyanate compositions that are substantially crystalline at room temperature comprising the reaction products of organic isocyanates with substoichiometric quantities of 2-methyl-1,3-propanediol. This inv... | 04/28/1992 |
| 5109098 | Imines and secondary amines containing hydrogen bonding moieties in their backbone and polymers made therefrom Imines and secondary amines comprising a backbone portion containing a plurality of polyalkyleneoxy moieties and one or more internal urea, thiourea, biuret, thiobiuret, amide, or thioamide moieties, and a plurality of imino or secondary amino end groups,... | 04/28/1992 |
| 5109096 | Polyurethane-based one-component reactive adhesives The present invention is directed to a reactive polyurethane mixture comprising: A) at least one polyisocyanate, B) a polyol mixture comprising: B1) at least one polyol containing three or more hydroxyl groups and having a molecular weight in the range from 80... | 04/28/1992 |
| 5106935 | Reaction injection molded elastomers prepared from amine terminated polyethers, amine terminated chain extender, a polycarbonate diol containing quasiprepolymer The invention relates to reaction injection molded elastomers derived from high molecular weight amine terminated polyethers, an aromatic diamine chain extender and a quasi-prepolymer made from an excess of polyisocyanate reacted with polycarbonate polyol... | 04/21/1992 |
| 5104930 | Polyurea gel compositions and articles therefrom Crosslinkable gel compositions cure rapidly to provide gel compositions which possess superior combinations of chemical and physical properties and aging resistance. These compositions are particularly useful for environmentally protecting substrates, esp... | 04/14/1992 |
| 5102969 | Process for the production of a sealing and adhesive compound strip and device for implementing this process In a method for the production of a sealing and adhesive strip, particularly for the direct glazing of motor vheicles, using a moisture-hardening single-component polyurethane composition based on telechelic isocyanate prepolymers of aromatic diisocyanate... | 04/07/1992 |
| 5100926 | Process for producing polyurethane Disclosed herein is a process for producing polyurethane moldings having good physical properties and good receptivity of electrostatic coating, said process comprising reacting a polyoxyethylene chain-containing polyether polyol having 2-4 hydroxyl group... | 03/31/1992 |
| 5100995 | Storage stable polyurethane adhesives The present invention is directed to a predominantly linear polyurethane adhesive which can be cross-linked by heat and is at least partially crystalline at room temperature, comprising: a) a polyurethane prepolymer which contains masked isocyanate groups and ... | 03/31/1992 |
| 5100997 | Preparation of elastomers using high molecular weight polyols or polyamines, said polyols prepared using a double metal cyanide complex catalyst The present invention relates to a process for preparing polyurethane/polyurea or polyurea elastomers by spray processing or reaction injection molding a reaction mixture comprising an A-side and a B-side, wherein said A-side comprises a polyisocyanate or... | 03/31/1992 |
| 5098983 | Polyisocyanate mixtures, processes for their production and their use as binders for coating compositions or as reactants for compounds reactive to isocyanate groups or carboxyl groups The present invention relates to polyisocyanate mixtures having a) an average NCO functionality of 1.5 to 4.0, b) a content of (cyclo)aliphatically bound isocyanate groups (calculated as NCO, MW 42) of 2 to 40% by weight, c) a content of chemically incorporated car... | 03/24/1992 |
| 5096993 | Thermoplastic polyurethane elastomers and polyurea elastomers made using low unsaturation level polyols prepared with double metal cyanide catalysts This invention relates to a method of fabricating a thermoplastic elastomer which comprises the steps of: (a) fabricating a polyol having a molecular weight of between about 2,000 and about 20,000 and having a level of end group unsaturation of no greater... | 03/17/1992 |
