Premium
Improved coordination catalyst for the alternating copolymerization of butadiene and propylene
Author(s) -
Wieder W.,
Witte J.
Publication year - 1981
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.1981.070260801
Subject(s) - copolymer , catalysis , vanadium , propylene oxide , materials science , polymer chemistry , alkyl , organic chemistry , chemistry , polymer , composite material , ethylene oxide
A close reexamination of previously reported vanadium‐based catalysts for the alternating copolymerization of butadiene and propylene resulted in an improved catalytic system for the above reaction. We found the system VO(OR) 2 Cl/ i ‐Bu 3 Al where R is neopentyl to be most effective. Qualitative relationships between the structure of the alkyl residue in VO(OR) 2 Cl and the catalyst efficiency have been elaborated. High‐molecular‐weight copolymers of butadiene and propylene, which consist of a perfectly alternating sequence of trans ‐1,4‐butadiene and propylene units, are obtained.