Patent application number | Description | Published |
20110077352 | AQUEOUS POLYURETHANE RESIN DISPERSION, PREPARATION METHOD OF THE SAME, AND COATING COMPOSITION CONTAINING THE SAME - Disclosed is an aqueous polyurethane resin dispersion which comprises a polyurethane resin which is obtained by reacting (A) a polyurethane prepolymer obtained by reacting (a) a polycarbonate polyol having an alicyclic structure in the main chain, (b) an acidic group-containing polyol compound and (d) a polyisocyanate, and (B) a chain-elongating agent, being dispersed in an aqueous medium, a carboxylic acid group content of the above-mentioned (A) polyurethane prepolymer based on a solid component of (A) the polyurethane prepolymer is 2.0 to 13.0% by weight, and a number of a hydroxyl equivalent of a mixture of the above-mentioned (a) polycarbonate polyol having an alicyclic structure in the main chain, the above-mentioned (b) acidic group-containing polyol compound, and, if necessary, (c) a polyol other than (a) and (b) is 70 to 270. | 03-31-2011 |
20110112245 | AQUEOUS POLYURETHANE RESIN DISPERSION, PROCESS FOR PREPARING THE SAME AND COATING COMPOSITION CONTAINING THE SAME - It is to provide an aqueous polyurethane dispersion which gives a coating film excellent in abrasion resistance. | 05-12-2011 |
20110313099 | AQUEOUS POLYURETHANE RESIN DISPERSION AND PROCESS FOR PREPARING THE SAME - An aqueous polyurethane resin dispersion which can easily carry out repaint or removal of an extra coating film after coating on a substrate material, and has high coating film hardness is to be provided. | 12-22-2011 |
20110313100 | AQUEOUS POLYURETHANE RESIN DISPERSION AND PROCESS FOR PREPARING THE SAME - An aqueous polyurethane resin dispersion which can provide a coating film having high impact resistance and hardness and excellent in adhesiveness to an electrodeposited coating surface is to be provided. | 12-22-2011 |
20110313101 | AQUEOUS POLYURETHANE RESIN DISPERSION AND PROCESS FOR PREPARING THE SAME - An aqueous polyurethane resin dispersion which can easily carry out repaint or removal of an extra coating film after coating on a substrate material is to be provided. | 12-22-2011 |
Patent application number | Description | Published |
20130317167 | AQUEOUS POLYURETHANE RESIN DISPERSION AND USE THEREOF - An aqueous polyurethane resin dispersion exhibits excellent drying properties of coating films and gives coating films having high water resistance and on the other hand showing a high rate of swelling with respect to aqueous cleaning liquids to permit new application. The aqueous polyurethane resin dispersion is a dispersion of a polyurethane resin in an aqueous medium, the polyurethane resin being obtained by reacting (A) a polyurethane prepolymer obtained from (a) a polyisocyanate compound, (b) a polycarbonate polyol with a number average molecular weight of 400 to 3000, (c) an acidic group-containing polyol compound and (d) a blocking agent, with (B) a chain extender, the total content of urethane bonds and urea bonds being 7 to 15 wt %, the content of carbonate bonds being 15 to 40 wt %, the content of ether bonds being 0 wt %, the content of isocyanate groups bonded to the blocking agent being 0.2 to 2 wt %, each of these contents being based on solid contents, the acid value being 11 to 16 mg KOH/g, the weight average molecular weight being 25,000 to 60,000. A coating composition includes the dispersion. A polyurethane resin film is obtained by thermally drying a composition including the dispersion. | 11-28-2013 |
20130317171 | AQUEOUS POLYURETHANE RESIN DISPERSION AND USE THEREOF - An aqueous polyurethane resin dispersion is a dispersion of a polyurethane resin in an aqueous medium, the polyurethane resin being obtained by reacting (A) a polyurethane prepolymer obtained by reacting (a) a polyisocyanate compound, (b) a polyol compound including a polycarbonate polyol with a number average molecular weight of 400 to 3000, (c) an acidic group-containing polyol compound and (d) a blocking agent, with (B) a chain extender, the total content of urethane bonds and urea bonds being 7 to 15 wt %, the content of carbonate bonds being 15 to 40 wt %, the content of ether bonds being 0.5 to 5 wt %, the content of isocyanate groups bonded to the blocking agent being 0.2 to 2.0 wt %, each of these contents being based on solid contents, the acid value being 10 to 16 mg KOH/g. The aqueous polyurethane resin dispersion can form coating films which permit new application while exhibiting excellent water resistance and solvent resistance. A coating composition includes the dispersion. A polyurethane resin film is obtained by thermally drying a composition including the dispersion. | 11-28-2013 |
20140088246 | AQUEOUS POLYURETHANE RESIN DISPERSION AND COATING COMPOSITION COMPRISING THE SAME - The present invention is to provide an aqueous polyurethane resin dispersion in which a polyurethane resin s dispersed in an aqueous medium, wherein the polyurethane resin is obtained by reacting (A) a polyurethane prepolymer which is obtained by reacting (a) a polyisocyanate compound, (b) a polyol compound containing a polycarbonate polyol having a number average molecular weight of 800 to 3500, and (c) an acidic group-containing polyol compound, and (B) a chain extender, being dispersed in an aqueous medium, (B) the chain extender contains a polyamine compound having three or more in total of an amino group(s) and/or an imino group(s) per molecule, and the polyurethane resin has, each based on a solid content, a content of urethane bonds of 5 to 10% by weight, a content of urea bonds of 2 to 7% by weight, a content of carbonate bonds of 15 to 40% by weight, has neither ether bond nor ester bond, has a density of cross-linking points of 1.0×10 | 03-27-2014 |