| 发明名称 |
Branched poly(trimethylene ether) polyols |
| 摘要 |
Disclosed is branched poly(trimethylene ether) polyols prepared from the acid catalyzed polycondensation reaction of 1,3-propanediol, and at least one triol comonomer selected from 1,1,1-tris(hydroxymethyl)ethane and 1,1,1-tris(hydroxymethyl)propane. Also disclosed is a branched poly(trimethylene ether) polyol with an equivalent hydroxyl functionality of about 2.1 to about 3.2 and a Mn of about 200 to about 6000. The polyols are useful in the preparation of polyurethane rigid and flexible foams. |
| 申请公布号 |
US8946485(B2) |
申请公布日期 |
2015.02.03 |
| 申请号 |
US201113220030 |
申请日期 |
2011.08.29 |
| 申请人 |
E I du Pont de Nemours and Company |
发明人 |
Fenyvesi Gyorgyi;Poladi Raja Hari;Sunkara Hari Babu |
| 分类号 |
C07C43/178;C07C43/15 |
主分类号 |
C07C43/178 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A branched amorphous poly(trimethylene ether) polyol comprising repeating units of Formula I, Formula II, and Formula IIIwherein R is methyl and Q is selected from Formula (IIIa) and (IIIb):wherein m is 1-20 and n is 1 to 3, and further comprising end groups of Formula IV, V, and VI:and wherein the branched poly(trimethylene ether) polyol comprises the repeating units of Formula II and Formula III, together, from about 2.8 mole % to about 10 mole %, and wherein the branched poly(trimethylene ether) polyol is amorphous. |
| 地址 |
Wilmington DE US |
