发明名称 |
Low residual monomer IPDI-PPG Prepolymer |
摘要 |
A prepolymer composition includes at least 70 wt.% of a 2:1 adduct of isophorone diisocyanate (IPDI) and polypropylene glycol (PPG), and includes less than 1 wt.% residual IPDI. A process for preparing the composition, includes reacting IPDI with polypropylene glycol at an NCO:OH ratio greater than 2:1 to provide a product mixture containing the 2:1 adduct, wherein residual IPDI is distilled from the product mixture such that a concentration of residual IPDI in the product mixture is less than 1%.
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申请公布号 |
EP1553118(A1) |
申请公布日期 |
2005.07.13 |
申请号 |
EP20050000046 |
申请日期 |
2005.01.04 |
申请人 |
AIR PRODUCTS AND CHEMICALS, INC. |
发明人 |
CONNER, MARK DAVID;KOCH, JOHN J.;GODDARD, RICHARD JOSEPH |
分类号 |
C08G18/10;C08G18/48;C08G18/75;(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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主权项 |
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地址 |
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