Stabilization of chlorofluorocarbon compositions

Details Stabilization of chlorofluorocarbon compositions Stabilization of chlorofluorocarbon compositions

C - Chemistry, Metallurgy

11

D

C11D 7/50 (2006.01) C11D 7/26 (2006.01) C11D 7/28 (2006.01)

Patent

CA 2069643

A method of stabilizing chlorofluorocarbon compositions thereby is provided. The stabilized composition comprises a chlorofluorocarbon and a sufficient amount of an epoxidized, generally high molecular weight stabilizer having an oxirane con- tent sufficient to effectively stabilize the chlorofluorocarbon. The stabilizer is preferably an epoxidized oil having a molecular weight in the range of about 300 to about 1,500 and an oxirane content of at least about 4 %. The method includes the step of ad- ding a sufficient amount of such a stabilizer to the chlorofluorocarbon composition. The chlorofluorocarbon composition typical- ly comprises chlorofluoromethane, chlorofluoroethane, mixtures thereof or a chlorofluorocarbon-alcohol azeotropic solution. Al- so provided is an improved continuous dialyzer cleaning method utilizing the stabilized chlorofluorocarbon composition.

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