发明授权
US5304578A Process for producing urethane foam having a high density skin layer
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具有高密度表层的聚氨酯泡沫的制造方法
- 专利标题: Process for producing urethane foam having a high density skin layer
- 专利标题(中): 具有高密度表层的聚氨酯泡沫的制造方法
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申请号: US027691申请日: 1993-03-08
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公开(公告)号: US5304578A公开(公告)日: 1994-04-19
- 发明人: Yutaka Tamano , Shuichi Okuzono
- 申请人: Yutaka Tamano , Shuichi Okuzono
- 申请人地址: JPX Shinnanyo
- 专利权人: Tosoh Corporation
- 当前专利权人: Tosoh Corporation
- 当前专利权人地址: JPX Shinnanyo
- 优先权: JPX4-82925 19920306; JPX5-32893 19930223
- 主分类号: C08G18/18
- IPC分类号: C08G18/18 ; C08J9/34
摘要:
A process is provided for producing a polyurethane foam having a high-density skin layer by reacting a polyol with a polyisocyanate in a short time. The reaction is allowed to proceed in the presence of a blowing agent, a catalyst, and optionally an additive, the blowing agent being composed only of water, and the catalyst being an amine represented by formula (I) below and/or an organic acid salt thereof: ##STR1## where R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are, independently, an alkyl group of 1 to 12 carbons, or R.sub.1 and R.sub.2, and/or R.sub.3 and R.sub.4 may be linked to form a cycloalkyl or heterocyclic ring together with the adjacent nitrogen atom; and R.sub.5 is hydrogen, an alkyl group of 1 to 12 carbons, a phenyl group, or a cycloalkyl group. This process does not use halogenated hydrocarbons which cause ozone layer destruction.
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