Phase-Transfer Catalyzed Esterification of Brominated Poly(Isobutylene-co-Isoprene)

详细信息    查看全文

• 作者：J. Keith McLean ; Sergio A. Guilln-Castellanos ; J. Scott Parent ; Ralph A. Whitney ; Kevin Kulbaba ; Akhtar Osman
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2009
• 出版时间：December 16, 2009
• 年：2009
• 卷：48
• 期：24
• 页码：10759-10764
• 全文大小：270K
• 年卷期：v.48,no.24(December 16, 2009)
• ISSN：1520-5045

文摘

Phase-transfer techniques are used to activate carboxylate nucleophiles for the purpose of preparing ester derivatives of brominated poly(isobutylene-co-isoprene) (BIIR). Studies of the dynamics and yields of stearate ester syntheses reveal the dual role of tetrabutylammonium bromide, as it serves as a phase-transfer catalyst and a catalyst for the isomerization of exomethylene allylic bromide functionality to kinetically more reactive E,Z-BrMe isomers. Knowledge of reaction fundamentals are used to prepare copolymers from BIIR and carboxylate-terminated polybutadiene (cBR) that phase-partition in the manner required for blend compatibilization applications.