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A new synthetic elastomer based on a chlorophosphonated polyolefin
Author(s) -
Leonard E. C.,
Loeb W. E.,
Mason J. H.,
Wheelwright W. L.
Publication year - 1961
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1961.070051405
Subject(s) - polyolefin , elastomer , vulcanization , copolymer , materials science , polymer chemistry , catalysis , propylene oxide , polymer , hydrolysis , butyl rubber , natural rubber , oxide , ethylene oxide , organic chemistry , chemistry , composite material , layer (electronics) , metallurgy
A new synthetic elastomer has been obtained based on an ethylene‐propylene copolymer prepared using an organometallic catalyst system. Reactive sites (phosphonyl dichloride groups) are placed on the copolymer chain by treating the polymer with phosphorus trichloride and oxygen. After hydrolysis or alcoholysis of the phosphonyl dichloride groups to phosphonic acid or phosphonic acid esters, vulcanization may be carried out by reaction with metallic oxides, particularly lead oxide. Vulcanizates of the polyolefin elastomer have outstanding resistance to heat, ozone, and oxygen, and have excellent electrical properties. This combination suggests the use of this material in high temperature electrical applications.