发明名称 |
Process for producing flexible polyurethane foam |
摘要 |
A composition and process useful to make flexible polyurethane foams and in particular flexible molded polyurethane foams is disclosed. The usage of dipolar aprotic liquids such as DMSO, DMI, sulfolane, N-methyl-acetoacetamide, N, N-dimethylacetoacetamide as well as glycols containing hydroxyl numbers OH# ‰¤ 1100 as cell opening aides for 2-cyanoacetamide or other similar molecules containing active methylene or methine groups to make a polyurethane foam is also disclosed. The advantage of using cell opener aids results in a) no foam shrinkage; b) lower use levels of cell opener; c) foam performance reproducibility d) optimum physical properties. In addition, combining the acid blocked amine catalyst together with the cell opener and the cell opener aid results in a less corrosive mixture as well as provides a method that does not require mechanical crushing for cell opening. |
申请公布号 |
EP2738192(B1) |
申请公布日期 |
2015.06.10 |
申请号 |
EP20140000650 |
申请日期 |
2011.07.08 |
申请人 |
AIR PRODUCTS AND CHEMICALS, INC. |
发明人 |
BURDENIUC, JUAN JESUS;KELLER, RENÉE JO;TOBIAS, JAMES DOUGLAS;JEON, YOU-MOON |
分类号 |
C08G18/16;C08J9/00 |
主分类号 |
C08G18/16 |
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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