Rubber modified methyl methacrylate syrups, production and use in producing cast sheets and moulding materials
申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:EP0019372A2
公开(公告)日:1980-11-26
A continuous process for producing rubber-modified methyl methacrylate syrups which comprises continuously supplying a material liquor comprising 1 to 20 parts by weight of a rubbery polymer dissolved in 100 parts by weight of a monomer comprising 60 to 100% by weight of methyl methacrylate, and a radical-polymerization initiator to a first reaction zone, continuously polymerizing at such a stationary conversion that the rubbery polymer is dispersed in the form of particles form while maintaining the temperature and residence time in the first reaction zone so that a steady state is achieved in the zone and the steady-state concentration of the initiator in the zone 1/2 to 1/1,000 times the concentration of initiator supplied, continuously taking out the resulting reaction mixture from the first reaction zone, and passing it through a second reaction zone having a volume of 0 to 5 times the volume of the first reaction zone, to.obtain a stable syrup comprising a disperse phase which is a solution of the rubbery polymer in the monomer and a continuous phase which is a solution of the resinous polymer in the monomer, and the use of these materials in the production of methyl methacrylate cast sheets and molding materials having an excellent impact resistance from the syrups.
一种生产橡胶改性甲基丙烯酸甲酯糖浆的连续工艺,包括向第一反应区连续供应料液,该料液由 1 至 20 份(按重量计)橡胶聚合物溶解在 100 份(按重量计)单体(包括 60 至 100% 重量的甲基丙烯酸甲酯)和自由基聚合引发剂组成、在保持第一反应区的温度和停留时间,使该反应区达到稳定状态,且该反应区中引发剂的稳定浓度为所提供引发剂浓度的 1/2 至 1/1,000 倍的情况下,以橡胶聚合物以颗粒形式分散的固定转化率进行连续聚合,从第一反应区连续取出所产生的反应混合物,并将其通过容积为第一反应区容积 0 至 5 倍的第二反应区,以。获得一种稳定的糖浆,该糖浆包括橡胶聚合物在单体中的溶液的分散相和树脂聚合物在单体中的溶液的连续相,并利用这些材料生产具有优异抗冲击性的甲基丙烯酸甲酯浇注板和成型材料。