Purification of polycarbonate resins
    7.
    发明授权
    Purification of polycarbonate resins 失效
    纯化聚碳酸酯树脂

    公开(公告)号:US3668181A

    公开(公告)日:1972-06-06

    申请号:US3668181D

    申请日:1970-03-06

    Applicant: ALLIED CHEM

    CPC classification number: C08G64/406

    Abstract: Crude precipitated polycarbonate resin obtained by the reaction of bisphenol A and phosgene, preferably in an aqueous alkaline emulsion containing a water-insoluble partial solvent for the resin, is purified by extraction with aqueous methanol or dimethoxy ethane or a mixture thereof.

    Abstract translation: 通过双酚A和光气的反应获得的粗沉淀聚碳酸酯树脂,优选在含有用于树脂的水不溶性部分溶剂的含水碱性乳液中,通过用甲醇水溶液或二甲氧基乙烷或其混合物萃取来提纯。

Patent Agency Ranking