| 发明名称 |
ALKOXYSILANE-GROUP MODIFIED POLYURETHANES AND LOW MODULUS SEALANTS FORMED THEREFROM |
| 摘要 |
Disclosed are alkoxysilane-group modified polyurethane that are the reaction product of: (1) a polyoxyalkylene diol; and (2) an isocyanate-functional silane. Also disclosed are compositions, including sealant compositions, that include such polyurethanes, and cured sealant formed from such compositions. |
| 申请公布号 |
US2016244549(A1) |
申请公布日期 |
2016.08.25 |
| 申请号 |
US201514631251 |
申请日期 |
2015.02.25 |
| 申请人 |
Bayer MaterialScience LLC |
发明人 |
Johnston Jay;Pasquini Ayla |
| 分类号 |
C08G18/71;C08G18/04;C09K3/10;C08G18/48 |
主分类号 |
C08G18/71 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An alkoxysilane-group modified polyurethane that is the reaction product of:
(1) a polyoxyalkylene polyol having a molecular weight of at least 18,000 gram/mole, a polydispersity of less than 1.5 and a content of unsaturated end groups of no more than 0.02 meq/gram polyol, measured according to ASTM D2849-69; and (2) a compound of the formula:
ONC—Y—Si—(X)3,wherein: (i) each X independently represents identical or different alkoxy radicals, and (ii) Y represents a difunctional organic radical, and wherein a weight average molar ratio of isocyanate groups of (2) to hydroxyl groups of (1) used to make the polyurethane is less than 0.80:1. |
| 地址 |
Pittsburgh PA US |
