| 摘要 |
<p>NOVEL POLYOL BLENDS The present invention is directed to a polyol blend comprising: (a) from about 5 to about 30% by weight of a member selected from the group consisting of 1,4butanediol, ethylene glycol, and mixtures thereof, and (b) from about 70 to about 95% by weight of a polyester polyol produced by reacting from 10 to 60 parts by weight of adipic acid with from 40 to 90 parts by weight of a polyoxyethylene glycol having a molecular weight of from 150 to 680, the parts of adipic acid and polyoxyethylene glycol being 100, and wherein said polyester has an hydroxyl number of from about 25 to about 130, and an acid number of 2 or less.</p> |
