| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a polyurethane elastomer composition for one-shot molding with superior handleability and moldability in production, and a squeegee for screen printing improved in elastomer characteristics (impact resilience, in particular) while keeping the preferable solvent resistance, and allowing precise and elaborate printing in the screen printing. <P>SOLUTION: The polyurethane elastomer composition includes: a polyester polyol composition containing a polyester polyol (A) obtained by a reaction of a glycol component including 1,3-propane diol (a1) and diethylene glycol (a2) or ethylene glycol (a3) with a polycarboxylic acid component containing succinic acid (b), a chain extending agent (B), and a urethanizing catalyst (C), when necessary; and a polyisocyanate (D). In polyol (A), (a1)/(a2) is 25/75-75/25 mol%, or (a1)/(a3) is 75/25-90/10 mol%. <P>COPYRIGHT: (C)2011,JPO&INPIT |
