发明授权
US3627722A Polyurethane sealant containing trialkyloxysilane end groups
失效
聚氨酯密封剂含有TRIALKYLOXYSILANE END GROUPS
- 专利标题： Polyurethane sealant containing trialkyloxysilane end groups
- 专利标题（中）： 聚氨酯密封剂含有TRIALKYLOXYSILANE END GROUPS
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申请号： US3627722D申请日： 1970-05-28
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公开(公告)号： US3627722A公开(公告)日： 1971-12-14
- 发明人: SEITER GEORGE M
- 申请人： MINNESOTA MINING & MFG
- 专利权人： Minnesota Mining & Mfg
- 当前专利权人： Minnesota Mining & Mfg
- 优先权： US4159770 1970-05-28
- 主分类号： C08G18/10
- IPC分类号： C08G18/10 ; C09K3/10 ; C08G22/08
摘要：
A polyurethane sealant composition containing terminal-NCO groups, at least 5 percent of the -NCO groups being end-blocked with -Si(OR)3 groups, where R is a lower alkyl. The terminal silane groups provide adhesion retention of the sealant to substrates such as metal or glass even after prolonged water immersion.
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