| 摘要 |
PURPOSE:To produce the subject polymer excellent in packability without using a remarkably irritating catalyst such as a tert-amine by using a specified tert- amino alcohol in combination with a specified carboxylic acid as the polyol components. CONSTITUTION:A tert-amino alcohol of the formula (R1 is a 2 to 24C chain alkylene, or arylene, etc.; R2 is a 1 to 24C chain alkyl, or aryl, etc.; n is average polymerization degree and 1 to 50) is blended with a carboxylic acid (preferably formic acid) of formula R3COOH (R3 is H, or a 1 to 25C chain alcohol, etc.) in a molar ratio of (the former/the latter) = (1/0.01) to (1/37.5). The resultant mixture is used as a polyol component and the polyol component is reacted with a polyisocyanate component. The tert-amino alcohol of the formula is obtained recommendably by reacting a diol such as 1,3-butanediol with a primary amine such as dimethylamine with stirring in the presence of a catalyst having a composition of copper-Ni-VIII group platinum family element, etc., at 150 to 250 deg.C while removing generated water out of the system. |
