Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1994-03-14
1996-02-06
Seidleck, James J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
528 86, 2521822, 25218224, 25218227, C08J 906, C08K 502
Patent
active
054896193
ABSTRACT:
This invention relates to novel blowing agents comprising a blend of (A) perfluoro- or partially fluorinated-(cyclo)alkanes and (B) one or more of hydrogenated chlorofluorocarbons, hydrogenated fluorocarbons and a low boiling (cyclo)alkane. These blowing agents perform as well as the conventionally used CFC's but are user friendly and do not have the adverse effect of depletion of the ozone layer. These blowing agents are particularly suited for use in producing foams from synthetic polymers and resins, especially phenolic foams of very low and stable thermal conductivity.
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Derwent Abstract, Accession No. 89-112335 [15] (corresponding to JP1060694-A 890307).
Barcroft Michael A.
Gould Kathryn S.
Johnstone David R.
Wilson David C.
BP Chemicals Limited
Seidleck James J.
Truong Duc
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