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    • 11. 发明申请
    • PROCESS FOR THE MANUFACTURE OF STYRENE-ACRYLONITRILE COPOLYMERS
    • 苯乙烯 - 丙烯腈共聚物的制备方法
    • WO01029099A1
    • 2001-04-26
    • PCT/US2000/028722
    • 2000-10-17
    • C08F2/18C08F212/10C08F220/44
    • C08F220/44C08F212/10
    • The process comprises: (a) the introduction, into a reactor, [lacuna] a reaction mixture comprising all the water, acrylonitrile, initiator or initiators, chain-transfer agent or agents and suspending agent or agents and optionally a predetermined fraction of the total amount of the styrene; (b) stirring the reaction mixture and increasing the temperature of this reaction mixture to 60 DEG C and then to 120 DEG C; (c) when the temperature of the reaction mixture has reached 60 DEG C or 120 DEG C, the addition of the remaining amount of styrene, so as to keep constant the styrene monomer/acrylonitrile monomer ratio in the reaction mixture throughout the duration of the addition; (d) raising the temperature of the reaction mixture to 140 DEG C and the maintenance at this temperature for a sufficient duration to bring the copolymerization to completion; and (e) cooling the reaction mixture and the recovery of the styrene/acrylonitrile copolymer. Application to the manufacture of SAN copolymers having a level of acrylonitrile of at least 40 % by weight.
    • 该方法包括:(a)将包含所有水,丙烯腈,引发剂或引发剂,链转移剂或试剂和悬浮剂或试剂的反应混合物引入反应器中,并且任选地包含总计的预定级分 苯乙烯量; (b)搅拌反应混合物并将该反应混合物的温度升高至60℃,然后升至120℃; (c)当反应混合物的温度达到60℃或120℃时,加入剩余量的苯乙烯,以保持反应混合物的整个持续时间内的苯乙烯单体/丙烯腈单体比例恒定 加成; (d)将反应混合物的温度升至140℃并在该温度下维持足够的时间以使共聚完成; 和(e)冷却反应混合物并回收苯乙烯/丙烯腈共聚物。 应用于具有至少40重量%丙烯腈水平的SAN共聚物的制造。