POLYOL FORMULATIONS FOR IMPROVED GREEN STRENGTH OF POLYISOCYANURATE RIGID FOAMS
    5.
    发明申请
    POLYOL FORMULATIONS FOR IMPROVED GREEN STRENGTH OF POLYISOCYANURATE RIGID FOAMS 审中-公开
    用于改善聚异氰酸酯刚性纤维素的强度的多酚配方

    公开(公告)号:US20140186611A1

    公开(公告)日:2014-07-03

    申请号:US14119199

    申请日:2012-05-21

    IPC分类号: C08G63/668 B32B5/20 C08G18/00

    摘要: Polyesters and polyol formulations comprising polyesters used in the preparation of polyisocyanurate rigid foams with improved green strength properties are provided. In some embodiments, a polyester which is the reaction product of (a) an aromatic component comprising 80 mole percent or greater of terephthalic acid, (b) at least one polyether polyol having a nominal functionality of 2, a molecular weight of 150 to 1,000 and a polyoxyethylene content of at least 70% by weight of the polyether polyol, (c) at least one glycol different than (b) having a nominal functionality of 2 and a molecular weight from 60 to 250, and (d) at least one polyol having a molecular weight of 60 to 250 and a nominal functionality of at least 3, wherein (a), (b), (c), and (d) are present in the reaction on a percent weight basis of 20 to 60 weight percent of (a), 20 to 50 weight percent of (b), 10 to 30 weight percent of (c), and 5 to 20 weight percent of (d) is provided.

    摘要翻译: 提供了包含用于制备具有改善的生坯强度性能的聚异氰脲酸酯刚性泡沫体的聚酯的聚酯和多元醇配方。 在一些实施方案中,聚酯是(a)包含80摩尔%或更多对苯二甲酸的芳族组分的反应产物,(b)至少一种标称官能度为2的聚醚多元醇,分子量为150至1,000 和聚醚多元醇的至少70重量%的聚氧乙烯含量,(c)至少一种不同于具有标称官能度为2且分子量为60至250的(b)的二元醇,和(d)至少一种 分子量为60〜250,标称官能度为3以上的多元醇,其中(a),(b),(c)和(d)以20〜60重量%的重量%存在于反应中 (a)的百分比,(b)的20〜50重量%,(c)的10〜30重量%和(d)的5〜20重量%。