Two stage process for the production of aromatic polyester-carbonate
    30.
    发明授权
    Two stage process for the production of aromatic polyester-carbonate 失效
    二阶段生产芳香族聚碳酸酯工艺

    公开(公告)号:US4600753A

    公开(公告)日:1986-07-15

    申请号:US680156

    申请日:1984-12-10

    IPC分类号: C08G63/00 C08G63/64

    CPC分类号: C08G63/64

    摘要: The invention relates to a process for the preparation of aromatic polyester-carbonates wherein, in a first stage, aromatic oligo-esters or oligo-ester-carbonates having hydroxyl end groups are prepared from diaryl esters of aromatic dicarboxylic acids (or their starting materials) and diphenols and, optionally, a diaryl carbonate, by trans-esterification in the melt, and in a second stage these oligo-esters or oligo-ester-carbonates are condensed with phosgene by the phase boundary process to give the polyester-carbonate.

    摘要翻译: 本发明涉及一种制备芳族聚酯 - 碳酸酯的方法,其中在第一阶段中,由芳族二羧酸(或它们的起始原料)的二芳基酯制备具有羟基端基的芳族低聚酯或低聚酯 - 碳酸酯, 和二醇和任选的碳酸二芳基酯,并且在第二阶段中,这些低聚酯或低聚酯 - 碳酸酯通过相界过程与光气缩合,得到聚酯 - 碳酸酯。