Described herein is a method of manufacturing a one-pack polyurethane dispersion, where the dispersion includes a polyurethane containing hydroxyl groups and at least one group selected from the group consisting of acid groups and polyalkoxylene groups, the acid groups of the polyurethane, if present, being neutralized to an extent from 0 to 100 mol-% of the acid groups; and a fully blocked polyisocyanate; where the method includes obtaining a mixture A; reacting a hydroxy-functional polymer with mixture A, thus-obtaining a mixture B; and neutralizing 0 to 100 mol-% of the acid groups, if contained in mixture B, based on the total amount of acid groups in mixture B. Also described herein are one-pack polyurethane dispersions obtainable according to the method, one-pack coating materials including the same and coated substrates including cured coating materials.

There is provided a film-forming composition for forming a film that covers a substrate and exhibits good electrical insulation properties, heat resistance, and solvent resistance after heating at a low temperature. A film-forming composition including a polymer (A) containing a unit structure of Formula (1):

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(wherein T.sup.1 is an arylene group or a combination of an arylene group with T.sup.0, T.sup.0 is an alkylene group, a fluorinated alkylene group, a carbonyl group, a sulfonyl group, or a combination thereof, R.sup.1 is a carboxyl group, an amino group, or an imino group, and n1 is an integer of 1 to 6), and a compound (B) having at least two isocyanate groups or blocked isocyanate groups. The polymer (A) is a polymer containing a unit structure of Formula (1) or a structure (A-1) having a combination of the unit structure of Formula (1) with a unit structure of Formula (2):

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The present invention provides a polyrotaxane of high compatibility with silicones, such as silicone oil, a highly insulative polyrotaxane, and/or a material comprising said polyrotaxane. The present invention provides a polyrotaxane obtained by disposing blocking groups at both ends of a pseudopolyrotaxane, in which the opening in a cyclic molecule is clathrated in a skewered manner by a straight-chain molecule, so that the cyclic molecule does not escape, wherein the cyclic molecule comprises a first group represented by formula I (in formula I, X is a single bond or NH; n is 0 or 1; R is a straight-chain, branched, or cyclic alkyl group, alkenyl group, or alkynyl group comprising 12-20 carbon atoms, with some of the hydrogen in the alkyl group, alkenyl group, or alkynyl group being optionally substituted by an OH group, a CN group, or an NH.sub.2 group; and * is the position of the bond to the cyclic molecule).

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The invention provides a laminated polyester film that is highly transparent, is resistant to blocking, and has excellent adhesion to a hardcoat layer and UV ink. The laminated polyester film contains a polyester film substrate and a coating layer on at least one surface of the polyester film substrate, wherein the coating layer is formed by curing a composition containing a urethane resin with a polycarbonate structure and a branched structure, a crosslinking agent, and a polyester resin.

The invention provides a laminated polyester film that is highly transparent, is resistant to blocking, and has excellent adhesion to a hardcoat layer and UV ink. The laminated polyester film contains a polyester film substrate and a coating layer on at least one surface of the polyester film substrate, wherein the coating layer is formed by curing a composition containing a urethane resin with a polycarbonate structure and a branched structure, a crosslinking agent, and a polyester resin.

The present invention relates to the coating of wires with coatings which are obtained by crosslinking blocked polyisocyanates. The coatings are characterized in that they are substantially free of urethane groups and the crosslinking of the monomers is predominantly effected by isocyanurate groups.

Disclosed is a composition for reactive hot melt resin and a reactive hot melt film prepared from the resin, which resin composition includes a polyurethane resin having a linear structure, an isocyanate blocking agent having a plurality of functional groups, a reaction catalyst, a reaction retardant, etc. Preferably, the resin composition includes a polyurethane resin and an isocyanate blocking agent used as a latent curing agent, which are main components; a catalyst for accelerating the reaction; and a reaction retardant for securing long-term storability. Particularly, the composition for reactive hot melt resin further includes a heat-resistance enhancer, preferably nanosilica, for preventing the resin from melting down during no-sew press treatment to provide a performance to help maintenance of adhesion.

The present invention relates to a thermosetting composition characterized in that it contains (A) a polyester resin of number average molecular weight 1,000-10,000, hydroxyl value 5-200 mg KOH/g and, (B) 0.5-2.0 equivalents relative to the hydroxyl groups of the aforesaid component (A) of a compound (B) which is a blocked aliphatic isocyanate compound having reactivity with the hydroxyl groups of component (A), wherein the blocking is with methyl ethyl ketoxime and/or ε-caprolactam, (C) 0.05-5 parts by weight of a bismuth compound, per 100 parts by weight of total resin solids of component (A) and component (B), and (D) 0.5-50 parts by weight of an organosilicate represented by the following general formula (I) and/or a condensation product thereof, relative to 100 parts by weight of total resin solids of component (A) and component (B) wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 in the formula each mean hydrogen atom or 1-10 carbon organic group, and can be the same or different, n is 1. By using the thermosetting, not only does stain resistance appear a short time after painting, but also excellent stain resistance is maintained for a long period, which fulfil the paint film performance requirements for painted steel sheet such as water resistance and bending workability and which have high environmental protection qualities and safety. ##STR00001##

A coating composition includes a blocked urethane elastomer (A) containing a terminal isocyanate group blocked with an oxime compound and having a number average molecular weight of 800 to 5,000, an aromatic diamine compound (B) containing an electron-donating group, and an amide compound (C). An equivalent ratio (amino group/isocyanate group) of the amino group of the aromatic diamine compound (B) to the isocyanate group of the blocked urethane elastomer (A) is within a range of 1.0 to 2.0. A solid content of the amide compound (C) is within a range of 0.5 mass % to 5 mass % based on a total solid content of the blocked urethane elastomer (A) and the aromatic diamine compound (B).

A thermosetting coating composition includes a hydroxyl group-containing resin, a curing agent, a phosphazene compound, and a solvent. The curing agent is a polyisocyanate curing agent and/or a blocked polyisocyanate curing agent.