NIPPON POLYURETHANE INDUSTRY CO., LTD. Patent applications |
Patent application number | Title | Published |
20100184914 | BLOCKED ISOCYANATE CONTAINING EMULSION COMPOSITION, PRODUCTION METHOD THEREOF, BAKING PAINT OR ADHESIVE COMPOSITION - [Problem] To improve the previous aqueous one-component coating polyurethane emulsion among the aqueous one-component type polyurethane resin coating agents utilizing the blocked isocyanate compounds, in order to improve aqueous dispersibility and the storage stability of the emulsion as well as various coating performances of the coating appearing around the dissociation temperature of the blocking groups. | 07-22-2010 |
20100170843 | COMPOSITION FOR POLYURETHANE RESIN FORMATION, SEALING MATERIAL, AND HOLLOW-FIBER MEMBRANE MODULE - A polyurethane resin forming composition comprising: a main agent (A) containing an isocyanate group-terminated prepolymer obtained by reacting an isocyanate group-containing compound (a1) with a polyfunctional polyether polyol (b1) having a specific molecular weight distribution obtained by the use of a compound having a functional group number of 8 as an initiator; and a curing agent (B) containing a castor oil-modified polyol (b2) obtained from castor oil and/or a castor oil fatty acid and a trimethylolalkane. | 07-08-2010 |
20100087617 | COMPOSITION CAPABLE OF FORMING YELLOWING-FREE, LOW-HARDNESS POLYURETHANE ELASTOMER, AND METHOD FOR PRODUCING YELLOWING-FREE, LOW-HARDNESS POLYURETHANE ELASTOMER USING THE SAME - The present invention provides a thermosetting polyurethane elastomer that is yellowing-free, has low hardness and does not give rise to bleeding without using any plasticizer, has little tack, and exhibits small changes in hardness with temperature. | 04-08-2010 |
20100044645 | METHOD FOR PRODUCING CONDUCTIVE POLYURETHANE MOLDED BODY AND CONDUCTIVE ROLL - The present invention provides a method for producing a conductive polyurethane molded body that can reconcile a satisfactory conductivity with a satisfactory moldability or, in place of this, can provide a high conductivity while securing a suitable moldability, and provides a conductive roll. A conductive polyurethane molded body is obtained by employing as main starting materials polyol and isocyanate that contains at least 60 mass % of 2,4′-diphenylmethane diisocyanate, incorporating thereinto at least a conductivity-imparting agent, and reacting and molding. The conductive polyurethane foam obtained when this reaction is carried out with the addition of a foaming agent is well suited for use as a conductive roll. | 02-25-2010 |
20090264614 | PROCESS FOR PRODUCING POWDERED THERMOPLASTIC POLYURETHANE UREA RESIN - A process for producing a powdered thermoplastic polyurethane urea resin is disclosed, which includes a step of forming a polyurethane urea resin by reacting a polymer polyol (a), an organic polyisocyanate (b), a monofunctional active hydrogen-containing compound (c), and preferably a bifunctional active hydrogen-containing compound (d) in specific proportions to form an isocyanate-terminated prepolymer, and subjecting the isocyanate-terminated prepolymer and water (e) to chain extension reaction in a non-aqueous dispersion medium. According to this production process, a powdered thermoplastic polyurethane urea resin having excellent melt formability can be obtained, and it is easy to control a molecular weight of the polyurethane urea resin. | 10-22-2009 |
20090209711 | AQUEOUS MODIFIED POLYISOCYANATE, NON-YELLOWING COATING COMPOSITION, AND ADHESIVE COMPOSITION - An aqueous modified polyisocyanate intended to be dispersed in an aqueous medium for use and obtained by reacting an HDI derivative with (A) a modifying agent composed of a methoxy polyoxyalkylene glycol mainly comprising an ethylene oxide unit, (B) a modifying agent composed of a hydroxyl group-terminated polyoxyalkylene glycol produced by using an alcohol having 8 or more carbon atoms as an initiator and mainly comprising a propylene oxide unit, and (C) a modifying agent composed of an ester compound having at least one hydroxyl group with an alkali metal salt of sulfonic acid introduced therein, wherein the concentration (calculated value) of the alkali metal salt of sulfonic acid derived from the modifying agent (C) is 1.5 to 25 μmol/g. | 08-20-2009 |
20090012219 | PRODUCTION PROCESS OF COLORED RESIN POWDER - A production process of colored resin powder, comprising a coloring step of mixing 0.5 to 40% by mass of a colorant (b1) with 99.5 to 60% by mass of a non-phthalic acid plasticizer (b2) to prepare a colored paste (B) and adding and mixing the colored paste (B) into a powdery thermoplastic polyurethane-urea resin (A), wherein the amounts of the colorant (b1) and the plasticizer (b2) contained in the colored paste (B) added to the powdery thermoplastic polyurethane-urea resin (A) are 0.1 to 5 parts by mass and 1 to 20 parts by mass, respectively, per 100 parts by mass of the thermoplastic polyurethane-urea resin. According to the production process, there can be provided colored resin powder, which is free from color mottling (color unevenness) on its surface and does not cause smearing of a molded product due to separation and falling of the colorant upon a molding process or the like. | 01-08-2009 |