发明名称 |
Process for manufacturing high-resilient flexible urethan foams |
摘要 |
A process for manufacturing high-resilient flexible urethan foams characterized by, reacting and foaming polyalkylene ether polyol and an organic polyisocyanate in the presence of a blowing agent, a surfactant and catalyst, (1) using as said polyalkylene ether polyol one which contains 2 to 10% by weight of a vinyl type polymer and in which its hydroxyl number ranges from 25 to 60 mg KOH/g, of its hydroxyl groups 20 to 70 mol% are primary hydroxyl groups and the remaining hydroxyl groups are secondary hydroxyl groups; (2) using as said organic polyisocyanate a mixture of tolylene diisocyanate with diphenylmethane diisocyanate or a crude diphenylmethane diisocyanate; and (3) using as said surfactant a mixture of a high-molecular-weight siloxane-oxyalkylene copolymer with a low-molecular-weight siloxane-oxyalkylene copolymer.
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申请公布号 |
US4119582(A) |
申请公布日期 |
1978.10.10 |
申请号 |
US19760656979 |
申请日期 |
1976.02.10 |
申请人 |
MITSUI-NISSO CORPORATION |
发明人 |
MATSUBARA, KIYOSHI;NOMURA, YUICHI;YATOMI, TADASHI;HAMAMURA, TADASHI;NODA, ISAO;WATANABE, TERUMI;NOMURA, TAKAO;SAKATA, ISAO |
分类号 |
C08G18/00;C08G18/63;C08G18/76;(IPC1-7):C08G18/63;C08K5/54 |
主分类号 |
C08G18/00 |
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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