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| Number | Title | Issue Date |
| 5645928 | Heat insulation panels manufactured from modified polyisocyanurate foams Heat insulation panels made from plates and the modified polyisocyanurate foams provided by a reaction of a polyisocyanate with a polyol composition mixture comprising a polyol, water, a trimerization catalyst, a carbodiimide catalyst, and an aromatic com... | 07/08/1997 |
| 5627220 | Process of the preparation of modified polyisocyanurate foams for heat insulation materials A process of the preparation of the modified polyisocyanurate foams provided by a reaction of a polyisocyanate with a polyol composition mixture comprising a polyol, water, a trimerization catalyst, a carbodiimide catalyst, and an aromatic compound used a... | 05/06/1997 |
| 5550168 | Process for producing modified polyisocyanurate foams A modified polyisocyanurate foam is produced by reacting an organic polyisocyanate, a polyol and water in the presence of three catalyst, i.e. two particular trimerization catalysts and a carbodiimidation catalyst. There can be produced, without using any... | 08/27/1996 |
| 5491174 | Process for preparation of polyurethanes utilizing novel catalysts 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 unt... | 02/13/1996 |
| 5470889 | Catalyst for polyisocyanurate foams made with alternative blowing agents Rigid, closed cell polyisocyanurate foams are prepared by reacting together a polyisocyanate and a polyester polyol or a mixture of a polyester polyol and at least one other isocyanate-reactive compound in the presence of (a) a hydrogen-containing blowing... | 11/28/1995 |
| 5321050 | Method for producing modified polyisocyanurate foams A method for producing a modified polyisocyanurate foam by reacting an organic polyisocyanate, polyol and water in the presence of a trimerizing catalyst composed of a certain hydroxyalkyl quaternary ammonium compound, and a carbodiimidizing catalyst comp... | 06/14/1994 |
| 5321101 | Thermosetting resin and a method for producing it The present invention relates to a thermosetting resin having high thermal resistance, high strength, flame resistance, and good processability which can be obtained by reacting polycarbodiimide substantially produced from one or more kinds of organic pol... | 06/14/1994 |
| 5308883 | Catalyst for polyisocyanurate foams made with alternative blowing agents Rigid, closed cell polyisocyanurate foams are prepared by reacting together a polyisocyanate and a polyester polyol or a mixture of a polyester polyol and at least one other isocyanate-reactive compound in the presence of (a) a hydrogen-containing blowing... | 05/03/1994 |
| 5284880 | Water-blown polyurethane integral skin foam The invention relates to water blown integral skin polyurethane foams made with a particular isocyanate quasi-prepolymer and resin side ingredients to yield a foam having good overall mechanical properties. The isocyanate quasi-prepolymer component of the... | 02/08/1994 |
| 5254597 | Production of chlorofluorocarbon-free, urethane-containing moldings having a cellular core and a compacted peripheral zone A process for the production of chlorofluorocarbon-free, urethane- or urethane- and urea-containing, soft-elastic, semirigid or rigid moldings having a cellular core and a compacted peripheral zone and an essentially pore-free, smooth surface involves rea... | 10/19/1993 |
| 5236960 | Water-blown polyurethane integral skin foam The invention relates to water blown integral skin polyurethane foams made with a particular isocyanate quasi-prepolymer and resin side ingredients to yield a foam having good overall mechanical properties. The isocyanate quasi-prepolymer component of the... | 08/17/1993 |
| 5216035 | Water-blown polyurethane integral skin foam The invention relates to water blown integral skin polyurethane foams made with a particular isocyanate quasi-prepolymer and resin side ingredients to yield a foam having good overall mechanical properties. The isocyanate quasi-prepolymer component of the... | 06/01/1993 |
| 5214076 | Carbodiimide-isocyanurate all water blown open celled foam A polycarbodiimide-polyisocyanurate foam is prepared by reacting (A) mixture of a polyol blend comprising (a) 25 to 100% of an aromatic polyester polyol having the following structure: ##STR1## where n=1, 2, or 3 and having hydroxyl number 150 to 330, (b)... | 05/25/1993 |
| 5079326 | Thermosetting resin and a method for producing it The present invention relates to a thermosetting resin having high thermal resistance, high strength, flame resistance, and good processability which can be obtained by reacting polycarbodiimide substantially produced form one or more kinds of organic pol... | 01/07/1992 |
| 4886836 | Activated medium with low non-specific protein adsorption A porous chemically activated medium having a low affinity for peptide group-containing materials is provided comprising a porous polymeric medium having a low affinity for peptide group-containing materials covalently bound to a residue of an activating ... | 12/12/1989 |
| 4882362 | Foamed microbeads and a process for their preparation Foamed microbeads with a shell and an encased core are characterized in that the shell is a reaction product of an NCO-containing carbodiimide and a polyamine, and the core is at least partly filled with a polymeric carbodiimide or its reaction product wi... | 11/21/1989 |
| 4804687 | Foamed microbeads and a process for their preparation Foamed microbeads with a shell and an encased core are characterized in that the shell is a reaction product of an NCO-containing carbodiimide and a polyamine, and the core is at least partly filled with a polymeric carbodiimide or its reaction product wi... | 02/14/1989 |
| 4798847 | Process for the preparation of hydrophilic membranes and such membranes This invention relates to a process for the preparation of hydrophilic membranes by coagulation of a solution of at least one hydrophobic polymer and at least one hydrophilic polymer in a suitable solvent medium in a coagulation medium. The process accord... | 01/17/1989 |
| 4703100 | Process for the production of polyisocyanates containing urea and/or biuret groups, preparations obtainable thereby and their use The present invention is directed to a process for the production of urea- and/or biuret-modified polyisocyanates by reacting organic polyisocyanates with a mixture of high molecular weight isocyanate-reactive compounds and low molecular weight isocyanate... | 10/27/1987 |
| 4611013 | Catalysts for the preparation of carbodiimide foams and elastomers New compounds which are salts of the formula A+ B- where A+ is a quaternary ammonium cation and B- is a tetrahedral boron-oxygen complex anion are prepared from boric acid by reaction with a hydroxyl compound an... | 09/09/1986 |
| 4424288 | Carbodiimide-modified polymethylene polyphenylene polyisocyanates for use in the preparation of polyisocyanurate-polyurethane foams Liquid carbodiimide-modified organic polyisocyanates are prepared by reacting a crude polymethylene polyphenylene polyisocyanate containing no more than 70 weight percent diphenylmethane diisocyanate with an isomer mixture of 40 to 100 weight percent 4,4'... | 01/03/1984 |
| 4421868 | Polyester-melamine thermosetting foam and method of preparation A polyester-melamine-isocyanurate thermosetting foam composition having improved flame, smoke and nonburning properties with good compressive strength, which foam composition is prepared by the admixture of a saturated polyester resin, a flame-retardant a... | 12/20/1983 |
| 4409341 | Composition for fire retardant urethane foam A composition for polyurethane foam comprising (a) polyols containing at least one of alkylene oxide adducts of aniline-formaldehyde condensates and alkylene oxide adducts of reduced compounds of nitrated toluenes in an amount of 30 to 70% by weight of th... | 10/11/1983 |
| 4384051 | Flexible polyurethane foam based on MDI A flexible hydrophilic MDI based polyurethane foam is produced by mixing together an aqueous phase which can optionally contain reinforcing fibers and surfactants and a resin phase comprising a prepolymer derived from a poly (oxy C2-4 alkylene)... | 05/17/1983 |
| 4384050 | Flexible polyurethane foam based on MDI A flexible, hydrophobic polyurethane foam is produced by mixing together an aqueous phase which can optionally contain reinforcing fibers and surfactants and a resin phase comprising a prepolymer derived from a poly (oxy C2-4 alkylene) diol hav... | 05/17/1983 |
| 4377645 | Dimensionally-stable polyurethane sponge and sponge-forming prepolymer An MDI based polyurethane foam having cellulose foam properties is produced by mixing together an aqueous phase which can optionally contain reinforcing fibers and surfactants and a resin phase comprising a prepolymer derived from a poly(oxy C2-4 | 03/22/1983 |
| 4344855 | Process for the production of polyisocyanates which contain carbodiimide groups and which are stable in storage The instant invention relates to a process for producing stable equilibrium mixtures of carbodiimides, uretone imines and organic isocyanates and storage-stable solutions of carbodiimides and uretone imines in polyisocyanates which are free from carbodiim... | 08/17/1982 |
| 4299883 | Method of making a sound-absorbent material, and material so made A sound-absorbent material is made by compressing foamed synthetic plastics material so as to rupture the walls of at least some of the cells therein. Preferably a slab of polycarbodiimide foam is compressed to about 50% to 66% of its initial thickness wh... | 11/10/1981 |
| 4284730 | Liquid carbodiimide- and uretonimine-isocyanurate-containing polyisocyanate compositions and microcellular foams made therefrom The invention relates to carbodiimide- and/or uretonimine-isocyanurate-containing polyisocyanates, to the process for their preparation, and to microcellular foams prepared therefrom. These compositions may be prepared in the presence of the appropriate c... | 08/18/1981 |
| 4266040 | Polyazlactone-electron deficient ethylenically unsaturated resinous compositions and method for foaming same A reaction product of (1) resin containing a plurality of electron deficient ethylenically unsaturated groups and (2) a polyazlactone. The product may be formed without the liberation of a gas and cured at a higher temperature with the liberation of a gas... | 05/05/1981 |
| 4266038 | Rubber-modified fire-retardant imide copolymers Rubber-modified copolymers of monovinyl aromatic monomers and imide derivatives of ethylenically unsaturated dicarboxylic acid monomers are blended with water as a blowing agent, bromodiphenylethers as fire retardants, and metal oxides as synergist for th... | 05/05/1981 |
| 4228095 | Process for the preparation of liquid carbodiimide-modified organic polyisocyanates employing organotin catalysts Carbodiimide-modified organic polyisocyanates are prepared by heating polyisocyanates in the presence of a catalytically sufficient amount of an organotin compound.... | 10/14/1980 |
| 4221572 | Abrasive material having a polycarbodiimide and polyurethane resin binder An abrasive material which comprises abrasive grains and a polycarbodiimide and polyurethane resin as the binder for the abrasive grains and a method of preparation thereof are disclosed. The polycarbodiimide and polyurethane resin is prepared by reacting... | 09/09/1980 |
| 4198489 | Polyurethane foams prepared from highly stable liquid carbodiimide-containing 4,4'-diphenylmethane diisocyanate Polyurethane foams are prepared employing as the polyisocyanate ingredient a highly stable liquid 4,4'-diphenylmethane diisocyanate (MDI) containing MDI-carbodiimide adducts prepared by heating MDI at a temperature of from 180° C. to 250° C. for a perio... | 04/15/1980 |
| 4181770 | Isocyanate-terminated branched polyethylene glycol and polyester polyurethane foams A hydrophilic foam is produced by mixing an isocyanate terminated branched polyethylene polyol with a polyester prepolymer and water. The foam may be used to impregnate fabrics, e.g., non-wovens, to produce reinforced sheets of foam of high absorbency and... | 01/01/1980 |
| 4177205 | Process for the preparation of highly stable liquid carbodiimide-containing polyisocyanate compositions Highly stable liquid 4,4'-diphenylmethane diisocyanate (MDI) containing MDI-carbodiimide adducts are prepared by (a) heating MDI at a temperature of from 60° C. to 120° C. for a period of from one hour to ten hours in the presence of tris(chloromethyl)p... | 12/04/1979 |
| 4166164 | Process for the preparation of carbodiimide-isocyanurate foams Rigid foams characterized by carbodiimide and isocyanurate linkages are prepared by catalytically condensing an organic polyisocyanate in the presence of (a) a carbodiimide-promoting compound and (b) certain C1 -C8 alkali metal carbo... | 08/28/1979 |
| 4151334 | Process for the preparation of carbodiimide-isocyanurate foams employing quaternary boron salts as catalysts Rigid foams characterized by carbodiimide and isocyanurate linkages are prepared by catalytically condensing an organic polyisocyanate in the presence of certain quaternary boron salts.... | 04/24/1979 |
| 4150207 | Alumina trihydrate as flame retardant agent for urethane-modified carbodiimide-isocyanurate foams Urethane-modified carbodiimide-isocyanurate foams are prepared by catalytically condensing (a) an organic polyisocyanate with a polyol or (b) a quasi-prepolymer in the presence of a blowing agent and from 20 parts to 100 parts by weight of alumina trihydr... | 04/17/1979 |
| 4147710 | Compounds containing phosphorous and a method for making polycarbodiimide foams with the compounds as a catalyst A compound adapted to be used to advantage as a catalyst for making carbodiimide foams is prepared by a process wherein (a) a phosphetane oxide or phosphetane sulphide of the general Formulae I and II: ##STR1## wherein X represents a C1 -C... | 04/03/1979 |
