发明名称 |
Blow-moldable rigid thermoplastic polyurethane resins |
摘要 |
A rigid thermoplastic polyurethane with improved melt strength can be prepared by deactivating the catalyst for the polymer subsequent to the onset of urethane bond formation. Catalyst deactivation is accomplished either with a latent deactivator for the catalyst, or an active deactivator. The further addition of a crosslinker to the reaction mixture can provide an even greater improvement of melt strength.
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申请公布号 |
US5648412(A) |
申请公布日期 |
1997.07.15 |
申请号 |
US19950380767 |
申请日期 |
1995.01.30 |
申请人 |
THE DOW CHEMICAL COMPANY |
发明人 |
MISTRY, GARY S.;WANG, KUAN J.;EHRLICH, BENJAMIN S. |
分类号 |
B29C49/00;B29K75/00;C08G18/00;C08G18/08;C08G18/22;(IPC1-7):C08K5/13;C08G18/24;C08L75/04 |
主分类号 |
B29C49/00 |
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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