Azeotropic compositions of perfluorohexane and hydrocarbons having 6 carbon atoms and the use thereof in the production of foams

摘要

Azeotropic compositions made up of (a) from about 73 to about 88% by weight perfluorohexane and (b) one compound selected from (1) about 14 to about 27% by weight 2-methyl pentane or (2) about 13 to about 25% by weight 3-methyl pentane or (3) about 12 to about 23% by weight, provided that the sum of the weight percent (a) plus weight percent (b) is 100 percent are suitable blowing agents for the production of foams.