Description

R**1b is a kind of high purity liquid, in the field of plastic foam has wide application. Because its gas phase, with low thermal conductivity, excellent properties, at the same time, compared with CFC**1, HCFC****-b for the destruction of the ozone layer atmosphere is equivalent to one over ten of the CFC**1, and was selected as the whole bittern generation of fluorine and chlorine carbon an ideal substitute.