发明名称 |
A PROCESS FOR THE PREPARATION OF MOISTURE-CURABLE, POLYETHERURETHANES WITH TERMINAL CYCLIC UREA/REACTIVE SILANE GROUPS |
摘要 |
A process for preparing a moisture-curable, polyether urethane containing terminal cyclic urea/reactive silane groups by reacting at an NCO:OH equivalent ratio of 1.5:1 to 2.5:1 a) a hydroxyl component containing i) a polyether containing two hydroxyl groups and one or more polyether segments, wherein the polyether segments have a number average molecular weight of at least 3000 and a degree of unsaturation of less than 0.04 milliequivalents/g , and ii) a polyether containing one hydroxyl group and one or more polyether segments having a number average molecular weight of 1000 to 15,000, with b) an isocyanate component containing i) a compound containing two isocyanate groups, and ii) a compound containing one isocyanate group, and subsequently reacting this reaction product at an equivalent ratio of isocyanate groups t o isocyanate-reactive groups of 0.8:1 to 1.1:1 with c) a compound containing a n aspartate group and a reactive silane group to form an intermediate polyethe r urethane containing terminal non-cyclic urea/reactive silane groups and converting the non-cyclic urea groups to cyclic urea groups by reacting the intermediate polyether urethane. |
申请公布号 |
CA2510978(A1) |
申请公布日期 |
2004.07.22 |
申请号 |
CA20032510978 |
申请日期 |
2003.12.05 |
申请人 |
BAYER MATERIALSCIENCE LLC |
发明人 |
CRAWFORD, DEREK L.;ROESLER, RICHARD R. |
分类号 |
C08G18/12;C08G18/28;C08G18/48;C09D175/04;C09J175/04;(IPC1-7):C08G18/12 |
主分类号 |
C08G18/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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