发明名称 |
Low viscosity aromatic polyols and methods for their preparation |
摘要 |
A method for preparing aromatic polyols useful for the production of polyurethane and polyisocyanurate polymers involves digesting scrap polyalkylene terephthalate polymers with a digesting agent, typically a low molecular weight polyol. The digestion product is then treated with an alkylene oxide to produce a low viscosity polyol which displays excellent stability over long term storage.
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申请公布号 |
US4701477(A) |
申请公布日期 |
1987.10.20 |
申请号 |
US19830513502 |
申请日期 |
1983.07.13 |
申请人 |
CHARDONOL, DIVISION OF FREEMAN CORPORATION |
发明人 |
ALTENBERG, MILTON J.;DEJONG, JOHANNES |
分类号 |
C08G18/00;C08G18/42;C08G18/46;C08G18/60;C08G63/42;C08G63/66;C08G65/26;(IPC1-7):C08G18/14 |
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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