C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
C08J 9/14 (2006.01)
Patent
CA 2048683
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 de- pletion 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.
Barcroft Michael A.
Gould Kathryn S.
Johnstone David R.
Wilson David C.
Borden Chemical Gb Limited
Bp Chemicals Limited
Gowling Lafleur Henderson Llp
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