发明名称 |
Process for producing isocyanate-based foams |
摘要 |
Isocyanate-based foams are produced by the reaction of polyisocyanates with compounds with molecular weights of from 400 to 10,000 and having at least two hydrogen atoms active towards isocyanates in the presence of hydrocarbons which are vaporizable under the foaming conditions as blowing agents. The active hydrogen component is a mixture of a) one or more nitrogen-free polyethers having at least two hydrogen atoms active towards isocyanates and containing oxyethylene residues, and b) one or more polyethers having at least two hydrogen atoms active towards isocyanates and containing no oxyethylene groups.
|
申请公布号 |
US5428077(A) |
申请公布日期 |
1995.06.27 |
申请号 |
US19940344208 |
申请日期 |
1994.11.08 |
申请人 |
BAYER AKTIENGESELLSCHAFT |
发明人 |
LAMBERTS, WILHELM;DIETRICH, WERNER |
分类号 |
C08G18/40;C08G18/48;C08J9/14;(IPC1-7):C08G18/00 |
主分类号 |
C08G18/40 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|