发明名称 |
POLYOL FORMULATIONS FOR IMPROVED GREEN STRENGTH OF POLYISOCYANURATE RIGID FOAMS |
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. |
申请公布号 |
US2014186611(A1) |
申请公布日期 |
2014.07.03 |
申请号 |
US201214119199 |
申请日期 |
2012.05.21 |
申请人 |
DOW GLOBAL TECHNOLOGIES LLC |
发明人 |
Skowronski Michael J.;Flaherty Kelly R.;Jimenez Jorge;Bae Woo-Sung;Lista Giuseppe |
分类号 |
C08G63/668;B32B5/20;C08G18/00 |
主分类号 |
C08G63/668 |
代理机构 |
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代理人 |
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主权项 |
1. A polyester which is the reaction product of at least:
(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). |
地址 |
Midland MI US |