发明名称 |
Process for making high resilience foams |
摘要 |
A prepolymer process for preparing a high resilience flexible polyurethane foam by reacting a polyisocyanate composition comprising at least 80% by weight of 4,4'-MDI and having an NCO value below 20% with a polyol composition comprising b1) an EO-rich polyol; b2) a polyol with an EO content between 20-50% and a primary hydroxy content of at least 50%; and b3) a polyol with an EO content between 10-20% and a primary hydroxy content of at least 50%; according to the following proportions: b1: 40-90 wt %, b2: 5-60 wt %, b3: 0-20 wt %. The invention also relates to reaction systems comprising the above components.
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申请公布号 |
US6784217(B2) |
申请公布日期 |
2004.08.31 |
申请号 |
US20030458901 |
申请日期 |
2003.06.11 |
申请人 |
HUNTSMAN INTERNATIONAL LLC |
发明人 |
PARFONDRY ALAIN;YU JIANMING |
分类号 |
C08G18/10;C08G18/48;C08G101/00;(IPC1-7):C08G18/10 |
主分类号 |
C08G18/10 |
代理机构 |
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代理人 |
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地址 |
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