Abstract: The present invention relates to a reactive hot melt composition that is capable of shortening a molding cycle and is excellent in adhesion with a metal, such as aluminum and the like, and provides (1) a reactive hot melt composition containing a composition containing a crystalline polyesterpolyol and an amorphous polyester polyol, and a polyisocyanate reacted with the composition, and having a semicrystallization time of 150 seconds or less and a crystallization heat of from 30 to 90 J/g, (2) a reactive hot melt composition containing a composition containing 100 parts by mass of a polyol containing from 30 to 95% by mass of a crystalline polyesterpolyol and from 5 to 70% by mass of an amorphous polyesterpolyol, and from 0.05 to 5 parts by mass of a crystallization nucleating agent added to the polyol, and a polyisocyanate reacted with the composition, and (3) a molded article containing the same molded.

Abstract: A crystalline polyester polyol is obtained by polycondensation of a dicarboxylic acid component comprising (1) 85 to 99 mol % of an aromatic dicarboxylic acid and (2) 15 to 1 mol % of an aliphatic dicarboxylic acid of HOOC—(CH2)n—COOH wherein n is 8 to 10 with (3) an aliphatic diol component of HO—(CH2)m—OH wherein m is 11 to 20, and a hot-melt adhesive is derived from the crystalline polyester polyol.

Abstract: A compatibilizing agent is described for a mixture of (1) a polyester polyol containing units derived from at least one aliphatic dicarboxylic acid (A) having n carbon atoms (10?n?20) and at least one aliphatic diol having k carbon atoms (2?k?12) and (2) a polyester polyol containing units derived from at least one aliphatic dicarboxylic acid (B) having m carbon atoms (2?m?9) and at least one aliphatic diol having k carbon atoms (2?k?12), the compatibilizing agent containing a polyester polyol which contains units derived from at least one aliphatic dicarboxylic acid (A) having n carbon atoms (10?n?20), at least one aliphatic dicarboxylic acid (B) having m carbon atoms (2?m?9), and at least one aliphatic diol having k carbon atoms (2?k?12) and in which the ratio of ingredient (A) to ingredient (B) used is from 90:10 to 10:90 in terms of molar ratio (provided that n-m?4).

Abstract: The present invention relates to a polyol mixture containing (1) 10 to 97% by weight of a crystalline polyester polyol produced by an aliphatic dicarboxylic acid and an aliphatic diol as main components, (2) 0 to 45% by weight of a polyester polyol produced by an aromatic polycarboxylic acid and an aliphatic polyol as main components, and (3) 3 to 45% by weight of a polycarbonate polyol, and a reactive hot melt composition obtained by reacting the polyol mixture and the polyisocyanate, and a molded product using the reactive hot melt composition.

Abstract: A crystalline polyesterpolyol having a number average molecular weight of 1,500 to 15,000 and obtainable from a polybasic carboxylic acid component and an aliphatic hydrocarbon diol component comprising 1,10-decanediol and/or 1,12-dodecanediol, and a hot-melt adhesive comprising a reaction product of a polyisocyanate and a polyesterpolyol, which contains a crystalline polyesterpolyol having a number average molecular weight of 1,500 to 15,000 and obtainable from a polybasic carboxylic acid component and an aliphatic hydrocarbon diol component comprising 1,10-decanediol and/or 1,12-dodecanediol are provided.

Abstract: A compatibilizing agent is described for a mixture of

Abstract: A crystalline polyesterpolyol having a number average molecular weight of 1,500 to 15,000 and obtainable from a polybasic carboxylic acid component and an aliphatic hydrocarbon diol component comprising 1,10-decanediol and/or 1,12-dodecanediol, and a hot-melt adhesive comprising a reaction product of a polyisocyanate and a polyesterpolyol, which contains a crystalline polyesterpolyol having a number average molecular weight of 1,500 to 15,000 and obtainable from a polybasic carboxylic acid component and an aliphatic hydrocarbon diol component comprising 1,10-decanediol and/or 1,12-dodecanediol are provided.