Gary C Cohn PLLC
Process for brominating butadiene/vinyl aromatic copolymers
Butadiene copolymers are brominated in solution using bromine as the brominating agent. The bromination is conducted in the presence of an excess of an aliphatic alcohol, relative to the amount of bromine that is used. The bromination proceeds rapidly at mild conditions, and is selective in that only aliphatic carbon-carbon double bonds are brominated, and unwanted bromination at tertiary carbon atoms is largely or completely avoided. The resulting brominated polymers are characterized in having very good thermal stability.
Dow Global Technologies LLC
C C
C08F C08C
inventional inventional
John W. Ronald B. David B. William J. Bruce A. Daniel J. Ted A.
Hull, Jr. Leng Gorman Kruper, Jr. King Murray Morgan