发明名称 |
LIGHTLY MODIFIED PREPOLYMERS AND USES THEREOF |
摘要 |
An isocyanate-terminated prepolymer C having an NCO content of from ≧26% by mass to ≦31.0% by mass is obtainable from the reaction of an isocyanate composition A having a viscosity at 25° C. of from ≧60 mPas to ≦800 mPas, comprising from ≧25% by mass to ≦60% by mass MDI and from ≧40% by mass to ≦75% by mass pMDI, wherein the sum of the amounts of those components is ≦100% by mass, with a bifunctional polyester ether polyol B having an OH number of ≧200 mg(KOH)/g and ≦500 mg(KOH)/g, obtained from the reaction of a dicarboxylic acid/dicarboxylic acid derivative with at least one polyol and with an epoxide, wherein the polyester ether polyol B is used in amounts of from ≧1.5% by mass to ≦6.0% by mass, based on the sum of the masses of A and B. The invention further provides a PUR/PIR polymer produced from the prepolymer C, its use and composite elements based thereon. |
申请公布号 |
EP2593491(B1) |
申请公布日期 |
2015.09.23 |
申请号 |
EP20110738188 |
申请日期 |
2011.07.11 |
申请人 |
BAYER INTELLECTUAL PROPERTY GMBH |
发明人 |
PIRKL, HANS-GEORG;SCHMIDT, MANFRED;ALBERS, REINHARD;VAN DE BRAAK, JOHANNES;ROERS, ROLF |
分类号 |
C08G18/10;C08G18/40;C08G18/42;C08G18/76;C08G18/80 |
主分类号 |
C08G18/10 |
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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