Abstract: A coating agent for a wiper blade rubber having superior friction performance and wiping performance, both initially and during use for an extended period, and having superior durability by inhibiting wear and the like, and a wiper blade rubber using the same. The coating agent for the wiper blade rubber includes a solid lubricant and a binder containing a polycarbonate-based polyurethane resin. The wiper blade rubber has the coating agent on both lateral surfaces of a lip portion of the wiper blade rubber.

Abstract: A coating agent for a wiper blade rubber having superior friction performance and wiping performance, both initially and during use for an extended period, and having superior durability by inhibiting wear and the like, and a wiper blade rubber using the same. The coating agent for the wiper blade rubber includes a solid lubricant and a binder containing a polycarbonate-based polyurethane resin. The wiper blade rubber has the coating agent on both lateral surfaces of a lip portion of the wiper blade rubber.

Abstract: A task of the present invention is to obtain an aqueous polyurethane resin dispersion which is advantageous not only in that the dispersion exhibits excellent storage stability in an aqueous medium, but also in that after the dispersion is dried, a film having satisfactory flexibility is formed. In the present invention, there is provided an aqueous polyurethane resin dispersion comprising a polyurethane resin dispersed in an aqueous medium, wherein the polyurethane resin is obtained by reacting (A) a polyurethane prepolymer with (B) a chain extender, wherein the polyurethane prepolymer (A) is obtained by reacting (a) a polycarbonate polyol compound, (b) a polyisocyanate compound, (c) an acid group-containing polyol compound, and (d) a compound having one acid group and one hydroxyl group, wherein the chain extender (B) contains (B-1) a polyamine compound having three or more amino group(s) and/or imino group(s) in total.

Abstract: 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?4 to 1.

Abstract: An aqueous polyurethane resin dispersion containing a polyurethane resin obtained by reacting (A) a polyurethane prepolymer obtained by reacting (a) a polyisocyanate compound, (b) at least one polyol compound containing a polycarbonate polyol having a number average molecular weight of 400 to 3000, (c) an acidic group-containing polyol compound, (d) a blocking agent for an isocyanate group, which dissociates at 80 to 180° C., and (B) a chain elongating agent having reactivity with the isocyanate group, being dispersed in an aqueous medium, a sum of a content of urethane and urea bondings is 15 to 30% by weight in terms of solid components, a content of carbonate bondings is 8% to <15% by weight in terms of solid components, and a content of isocyanate group to which the above-mentioned blocking agent has bound is 0.2 to 3% by weight in terms of solid components as calculated on isocyanate group.

Abstract: An aqueous polyurethane resin dispersion containing a polyurethane resin obtained by reacting (A) a polyurethane prepolymer obtained by reacting (a) a polyisocyanate compound, (b) at least one polyol compound containing a polycarbonate polyol having a number average molecular weight of 400 to 3000, (c) an acidic group-containing polyol compound, and (d) a blocking agent for an isocyanate group, which dissociates at 80 to 180° C., and (B) a chain elongating agent having reactivity with the isocyanate group, being dispersed in an aqueous medium, a sum of a content of urethane bondings and a content of urea bondings is 7 to 18% by weight of solid components, a content of carbonate bondings is 15 to 40% by weight of solid components, and a content of an isocyanate group to which the above-mentioned blocking agent has bonded is 0.2 to 3% by weight of solid components and calculated on the isocyanate group.

Abstract: An object of this invention is to obtain an aqueous polyurethane resin dispersion having excellent drying property, which can provide a coating film having high hardness. The aqueous polyurethane resin dispersion comprises a polyurethane resin obtained by reacting (a) a polyol compound, (b) a polyisocyanate compound, (c) an acidic group-containing polyol compound and (d) a chain-elongating agent, which is being dispersed in an aqueous medium, wherein the above-mentioned (a) polyol compound contains at least (a1) a polycarbonate polyol having an alicyclic structure at the main chain and (a2) a polymer polyol having a number average molecular weight of 500 to 5000 and having no alicyclic structure.

Abstract: 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?4 to 1.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: The phosphorus-containing polycarbonate polyol disclosed herein has a structural unit (I) represented by a formula: —OCOO— and a structural unit (II) represented by a residue A, wherein A denotes a n-valent residue in which n of alcoholic hydroxyl groups are removed from a phosphorus compound having at least n of alcoholic hydroxyl groups, in which n is an integer of 2 or larger, and wherein a terminal group of the polyol is a alcoholic hydroxyl group. The novel phosphorus-containing polycarbonate polyol, as a reactive flame-retardant agent, can provide flame-retardant properties easily to polyurethane or the like.

Abstract: The invention relates to an aqueous polyurethane resin dispersion having a good dispersibility in an aqueous medium and capable of forming a paint film excellent in strength when cured by ultraviolet light, and an aqueous polyurethane resin dispersion excellent in drying property, having a high hardness and being capable of providing a paint film having a scratch resistance, wherein the polyurethane resin is obtained by reacting at least a polycarbonate polyol (a); an acidic group-containing polyol (b); and an optional polyol (c) other than (a) and (b), with a polyisocyanate (d), and optionally further reacting with a chain extender (B), as well as a paint composition and a coating agent composition containing the same, and a preparation process of the same.

Abstract: An object is to obtain an aqueous polyurethane resin dispersion which provides a coating film having high hardness, oleic acid resistance and solvent resistance. The aqueous polyurethane resin dispersion comprises a polyurethane resin obtained by reacting (a) a polyol compound, (b) a polyisocyanate compound, (c) an acidic group-containing polyol compound and (d) a chain-elongating agent being dispersed in an aqueous medium, wherein (a) the polyol compound comprises a polycarbonate polyol compound represented by the formula (1), a hydroxyl equivalent of (a) the polyol compound and (c) the acidic group-containing polyol compound is 180 to 400, and a total acid value of (a) the polyol compound, (b) the polyisocyanate compound and (c) the acidic group-containing polyol compound is 22 to 40 mg KOH/g.

Abstract: An object is to obtain an aqueous polyurethane resin dispersion having excellent drying property, which can provide a coating film having high hardness. The aqueous polyurethane resin dispersion comprises a polyurethane resin obtained by reacting (a) a polyol compound, (b) a polyisocyanate compound, (c) an acidic group-containing polyol compound and (d) a chain-elongating agent, which is being dispersed in an aqueous medium, wherein the above-mentioned (a) polyol compound contains at least (a1) a polycarbonate polyol having an alicyclic structure at the main chain and (a2) a polymer polyol having a number average molecular weight of 500 to 5000 and having no alicyclic structure.

Abstract: A curable polyimide resin composition containing a polyimide resin obtainable from by a reaction of a reaction mixture containing a diisocyanate compound, a carbonate group-containing diol compound and an imide compound having two terminal hydroxyhydrocarbyl groups gives a cured insulation film having improved characteristics.

Abstract: A process for packaging an electronic device employs an insulating protective resin layer produced from one or more of the resin compositions: (1) 100 parts of an organic solvent-soluble resin having a polysiloxane skeleton and a polar group, 0.5 to 30 parts of an epoxy compound having an epoxy equivalent of more than 800, and an organic solvent, (2) 100 parts of an organic solvent-soluble resin having a polysiloxane skeleton and a polar group, 0.1 to 10 parts of an epoxy compound having an epoxy equivalent of 100 to 800, 2 to 30 weight parts of a polyvalent isocyanate compound, and an organic solvent; and (3) 100 parts of an organic solvent-soluble resin having a polysiloxane skeleton and a polar group, 0.1 to 20 parts of an epoxy compound having an epoxy equivalent of more than 800, 2 to 30 parts of a polyvalent isocyanate compound, and an organic solvent.

Abstract: 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. It is an aqueous polyurethane resin dispersion which comprises a polyurethane resin obtained by reacting (A) a polyurethane prepolymer which is obtained by reacting (a) a polyisocyanate compound, (b) at least one polyol compound containing a polycarbonate polyol having a number average molecular weight of 400 to 3000, (c) an acidic group-containing polyol compound, and (d) a blocking agent for an isocyanate group, which dissociates at 80 to 180° C.

Abstract: 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. It is an aqueous polyurethane resin dispersion which comprises a polyurethane resin obtained by reacting (A) a polyurethane prepolymer which is obtained by reacting (a) a polyisocyanate compound, (b) at least one polyol compound containing a poly-carbonate polyol having a number average molecular weight of 400 to 3000, (c) an acidic group-containing polyol compound, and (d) a blocking agent for an isocyanate group, which dissociates at 80 to 180° C.

Abstract: 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. It is an aqueous polyurethane resin dispersion which comprises (A) a polyurethane resin obtained by reacting (a) a polyisocyanate compound, (b) at least one polyol compound containing a polycarbonate polyol having a number average molecular weight of 400 to 3000, (c) an acidic group-containing polyol compound, and (d) a blocking agent for an isocyanate group, which dissociates at 80 to 180° C.