发明名称 |
Processo para a preparação de pré-polímeros de poliuretano com grupos isocianato terminais na presença de um catalisador, e aplicação dos mesmos |
摘要 |
A process for the production of polyurethane prepolymers (I) with isocyanate end groups by reaction of a polyisocyanate with polyols comprises mixing at least one unsymmetrical diisocyanate and at least one polyol having an average mol. wt. (Mn) of 60-3000 (200-1200) g/mol in a ratio of isocyanate groups to hydroxyl groups of 1.1:1-4:1 (1.45:1-1.75:1) in the presence of at least one carboxylic acid amide. |
申请公布号 |
BR0317331(B1) |
申请公布日期 |
2013.12.24 |
申请号 |
BR20030317331 |
申请日期 |
2003.12.06 |
申请人 |
HENKEL AG & CO. KGAA |
发明人 |
GERD BOLTE (FALECIDO);GUIDO KOLLBACH;NINA HASSEL;HANS-GEORG KINZELMANN;OLIVER STEIL |
分类号 |
C08G18/16;C08G18/10;C09J175/04 |
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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