发明名称 |
PROCESS FOR HALOGENATION OF ISOMONOOLEFIN/PARA-ALKYLSTYRENE COPOLYMERS |
摘要 |
A process for halogenating a copolymer of a C4-C7 isomonoolefin, e.g. isobutylene, and a para-alkylstyrene, e.g., para-methylstyrene, is disclosed. Increased halogenation efficiency is achieved by conduction the reaction under free radical halogenation conditions and in the presence of an oxidizing agent, e.g. hydrogen peroxide, which oxidizes hydrogen halide generated in situ in the reaction back to free halogen. The oxidizing agent is preferably not added to the reaction medium until after first stage halogenation is substantially completed.
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申请公布号 |
CA2257820(A1) |
申请公布日期 |
1998.01.29 |
申请号 |
CA19972257820 |
申请日期 |
1997.07.18 |
申请人 |
EXXON CHEMICAL PATENTS, INC. |
发明人 |
CHUNG, DAVID YEN-LUNG;NEWMAN, NEIL FREDERICK |
分类号 |
C08F8/22;C08F10/10;C08F12/12;(IPC1-7):C08F8/20 |
主分类号 |
C08F8/22 |
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