发明名称 |
FOAMS AND FOAMABLE COMPOSITIONS CONTAINING HALOGENATED OLEFIN BLOWING AGENTS |
摘要 |
The invention provides foam forming methods that comprise: (a) preparing a foamable system comprising at least one hydrohaloolefin; and (b) ensuring either (i) the substantial absence of long-term decomposition-inducing contact between said hydrofluoroolefin and an amine-containing catalyst; (ii) that an effective amount of surfactant is available in the system under conditions which prevent long term exposure of the surfactant to a long-term decomposition reaction environment; or (iii) a combination of (i) and (ii). Related methods, foamable systems and foams are also disclosed. Preferred embodiments provide polyurethane and polyisocyanurate foams and methods for the preparation thereof, including closed-celled, polyurethane and polyisocyanurate foams and methods for their preparation. The preferred foams are characterized by a fine uniform cell structure and little or no foam collapse. The foams are preferably produced with a polyol premix composition which comprises a combination of a hydrohaloolefin blowing agent, a polyol, a silicone surfactant, a catalyst and is further characterized by being substantially free of added water. |
申请公布号 |
CA2770673(A1) |
申请公布日期 |
2011.02.17 |
申请号 |
CA20102770673 |
申请日期 |
2010.08.02 |
申请人 |
HONEYWELL INTERNATIONAL INC. |
发明人 |
WILLIAMS, DAVID J.;GITTERE, CLIFFORD P.;VAN DER PUY, MICHAEL |
分类号 |
C08J9/14;C08G18/18;C08L23/28;C08L75/04 |
主分类号 |
C08J9/14 |
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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