发明授权
US4897431A Process for the preparation of primarily closed cell rigid foams
containing urethane groups or urethane- and isocyanurate groups, and
their use
失效
用于制备含有氨基甲酸酯基团或氨基甲酸酯和异氰脲酸酯基团的主要闭孔硬质泡沫的方法及其用途
- 专利标题: Process for the preparation of primarily closed cell rigid foams containing urethane groups or urethane- and isocyanurate groups, and their use
- 专利标题(中): 用于制备含有氨基甲酸酯基团或氨基甲酸酯和异氰脲酸酯基团的主要闭孔硬质泡沫的方法及其用途
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申请号: US127269申请日: 1987-12-01
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公开(公告)号: US4897431A公开(公告)日: 1990-01-30
- 发明人: Dietrich Scherzer , Joachim Streu
- 申请人: Dietrich Scherzer , Joachim Streu
- 申请人地址: DEX Ludwigshafen
- 专利权人: BASF Aktiengesellschaft
- 当前专利权人: BASF Aktiengesellschaft
- 当前专利权人地址: DEX Ludwigshafen
- 优先权: DEX3642666 19861213
- 主分类号: C08G18/42
- IPC分类号: C08G18/42 ; C08G18/46 ; C08G18/76
摘要:
Disclosed is a process for the preparation of primarily closed cell rigid foams, useful for strengthening mechanical construction parts or for use as insulation material, containing urethane groups, or urethane and isocyanurate groups where the polyol component is a higher molecular weight polyester polyol, containing in bonded form units having one or more of the structures: ##STR1## or a mixture of said polyester polyol and known polyester polyols and/or polyether polyols.
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