发明名称 |
PROCESS FOR CONVERSION OF POLYURETHANE POLYMER TO POLYOL AND FRESH POLYURETHANE POLYMER THEREFROM |
摘要 |
<p>An intermediate product suitable for the preparation of a polyether polyol is obtainable by treating polyether polyol-based scrap polyurethane at an elevated temperature with a liquid mixture which consists of an alkanolamine and a metal hydroxide wherein the weight ratio of scrap polyurethane to liquid mixture is from 12:1 to 50:1 and the liquid mixture contains the alkanolamine in an amount of from 70 to 95% based on total weight of the liquid mixture wherein the said intermediate is a stable emulsion or dispersion.</p> |
申请公布号 |
EP0648246(B1) |
申请公布日期 |
2000.02.09 |
申请号 |
EP19930915345 |
申请日期 |
1993.06.14 |
申请人 |
THE DOW CHEMICAL COMPANY |
发明人 |
VAN DER WAL, HANNO, RUDOLF |
分类号 |
C08J11/22;C08G18/48;C08G18/83;C08G65/00;C08G65/26;C08J11/28;(IPC1-7):C08J11/22 |
主分类号 |
C08J11/22 |
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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