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Polymers and telomers of 4‐chloroperfluoroheptadiene‐1,6
Author(s) -
Fearn James E.,
Wall Leo A.
Publication year - 1963
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760030312
Subject(s) - polymer , materials science , polymerization , ultraviolet , zinc , salt (chemistry) , sodium salt , polystyrene , phase (matter) , chemical engineering , nuclear chemistry , polymer chemistry , organic chemistry , composite material , chemistry , inorganic chemistry , metallurgy , optoelectronics , engineering
The polymer was prepared by pyrolyzing the sodium salt of 3,5,7,8,‐tetrachloroperfluoro‐octanoic acid and subsequent dechlorination of the resulting heptene with activated zinc. The heptadiene was separated from other dechlorination products and brought to a high degree of purity through use of vapor phase chromatography and polymerized in bulk utilizing gamma rays at room temperature, 100°C and 150°C, and utilizing ultraviolet light at 150°C. The properties of these brittle and glossy polymers were determined. Also the purified 4‐chloroperfluoroheptadiene‐1,6 was telomerized with dibromodifluoromethane yielding a cycle, clear, colorless, liquid telomer.