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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0419202 (1995-04-10) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 8 인용 특허 : 0 |
There is now provided a closed cell rigid polyisocyanate based foam blowing with a C1-C4 hydrofluorocarbon and water as blowing agents, which possesses a uniform density gradient varying by not more than 10 percent. There is also now provided a froth foaming mixture having good flow by employing a h
A rigid closed cell polyisocyanate based foam having a closed cell content of at least 85 percent, prepared from a froth foaming mixture comprising: a) a polyol composition comprising a hydroxyl terminated polyol having a pH in the range of 6-8, water as a co-blowing agent, and a tertiary amine ethe
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