发明名称 |
PROCESS FOR PREPARING POLYMER POLYOLS |
摘要 |
The invention relates to a process for the preparation of a polymer polyol, which process comprises mixing in a reactor vessel a base polyol, one or more ethylenically unsaturated monomers, a polymerization initiator, optionally a macromer, and optionally a chain transfer agent, and polymerizing the mixture thus obtained at a temperature of 50 to 200 °C, wherein the monomer(s) and initiator are dosed simultaneously to the reactor vessel and wherein during the time period of simultaneously dosing the monomer(s) and initiator the dosing weight ratio of initiator to monomer(s) is increased. |
申请公布号 |
WO2012017019(A1) |
申请公布日期 |
2012.02.09 |
申请号 |
WO2011EP63388 |
申请日期 |
2011.08.03 |
申请人 |
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.;FENNIS, PAULUS JACOBUS;LELIEVELD, MARTINUS JOHANNES MARIA |
发明人 |
FENNIS, PAULUS JACOBUS;LELIEVELD, MARTINUS JOHANNES MARIA |
分类号 |
C08F283/06;C08F2/00;C08F4/34;C08F290/06;C08G18/63 |
主分类号 |
C08F283/06 |
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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