发明名称 |
Reduction of the amine content of recycled polyols |
摘要 |
In a process for reducing the primary amine content of a composition comprising at least one polyol, in which a composition comprising at least one polyol is admixed with at least one isocyanate which contains only secondary and/or tertiary, aliphatically bound isocyanate groups, isocyanate is added in an amount of up to 5% by weight, based on the total composition, and a polyol preparation is obtained.
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申请公布号 |
US5968992(A) |
申请公布日期 |
1999.10.19 |
申请号 |
US19980136224 |
申请日期 |
1998.08.19 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
NABER, BERNHARD;GASSAN, MICHAEL;SCHUPP, THOMAS;CHAKRABARTI, SARBANANDA |
分类号 |
C07C29/88;C07C31/18;C07C31/20;C08G18/32;C08G18/76;C08G18/83;C08J11/24;(IPC1-7):C08G18/32 |
主分类号 |
C07C29/88 |
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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