METHOD OF PRODUCING POLYCARBONATE-BASED POLYMER MICROPARTICLES, AND POLYCARBONATE-BASED POLYMER MICROPARTICLES
    81.
    发明申请
    METHOD OF PRODUCING POLYCARBONATE-BASED POLYMER MICROPARTICLES, AND POLYCARBONATE-BASED POLYMER MICROPARTICLES 有权
    生产基于聚碳酸酯的聚合物微球的方法和基于聚碳酸酯的聚合物微球

    公开(公告)号:US20150024205A1

    公开(公告)日:2015-01-22

    申请号:US14375262

    申请日:2013-01-18

    IPC分类号: C08J3/14

    摘要: A method of producing polycarbonate-based polymer microparticles including forming an emulsion in a system in which a polycarbonate-based polymer (A), a polymer (B) different from the polycarbonate-based polymer (A) and an organic solvent (C) are dissolved and mixed together and which causes phase separation into two phases of a solution phase having the poly-carbonate-based polymer (A) as its main component and a solution phase having the polymer (B) different from the polycarbonate-based polymer (a) as its main component, and contacting a poor solvent for the polycarbonate-based polymer (A) with the emulsion at a temperature of 80° C. or higher to thereby precipitate microparticles of the polycarbonate-based polymer (A).

    摘要翻译: 制备聚碳酸酯类聚合物微粒的方法包括在不同于聚碳酸酯类聚合物(A)的聚碳酸酯类聚合物(A),聚合物(B)和有机溶剂(C))的体系中形成乳液的方法为 溶解并混合在一起,并使相分离成具有聚碳酸酯类聚合物(A)作为其主要成分的溶液相的两相和具有聚碳酸酯类聚合物(a)的聚合物(B)的溶液相 )作为其主要成分,并使聚碳酸酯类聚合物(A)的不良溶剂与乳液在80℃以上的温度下接触,从而析出聚碳酸酯类聚合物(A)的微粒。

    METHOD FOR PRODUCING POLYMER, AND POLYMER PRODUCT
    83.
    发明申请
    METHOD FOR PRODUCING POLYMER, AND POLYMER PRODUCT 审中-公开
    生产聚合物的方法和聚合物产品

    公开(公告)号:US20140213754A1

    公开(公告)日:2014-07-31

    申请号:US14160773

    申请日:2014-01-22

    IPC分类号: C08G64/30 C08G63/82 C08G63/08

    摘要: To provide a method for producing a polymer, which contains: bringing an intermediate polymer, which has been obtained through ring-opening polymerization of a ring-opening polymerizable monomer, into contact with, and melting the intermediate polymer in a compressive fluid having a density of 230 kg/m3 or greater, at temperature lower than a melting point of the intermediate polymer, at a ratio of 0.05 to 10, to dissolve a low-molecular-weight compound contained in the intermediate polymer in the compressive fluid, to thereby extract the low-molecular-weight compound, wherein the ratio is a ratio of a mass of the intermediate polymer to a mass of the compressive fluid.

    摘要翻译: 提供一种制备聚合物的方法,其包括:将通过开环聚合单体的开环聚合获得的中间体聚合物与具有密度的压缩流体接触并熔融中间聚合物 在低于中间体聚合物的熔点的温度下,以0.05〜10的比例溶解230kg / m 3以上,以将包含在中间聚合物中的低分子量化合物溶解在压缩流体中,从而提取 低分子量化合物,其中该比例是中间聚合物的质量与压缩流体质量的比率。

    Process for producing polycarbonate
    90.
    发明授权
    Process for producing polycarbonate 有权
    生产聚碳酸酯的方法

    公开(公告)号:US06703473B2

    公开(公告)日:2004-03-09

    申请号:US10038953

    申请日:2002-01-02

    IPC分类号: C08G6400

    CPC分类号: C08G64/406 C08G64/307

    摘要: An improvement to the melt transesterification reaction of diaryl carbonate with dihydroxy aryl compound is disclosed. The improvement entails the following steps (i) introducing the resulting vapor stream at the mid-height of a first distillation column, and (ii) separating the vapor stream into a top product containing high purity monohydroxy aryl compound and a first bottom product, and (iii) recycling the high purity monohydroxy aryl compound of (ii) to the reaction, and (iv) introducing the first bottom product at mid-height of a second distillation column, and (v) separating said first bottom product into high boiling bottom by-product and overhead remaining constituents, and (vi) introducing the overhead remaining constituents at mid-height of a third distillation column, and (vii) separating said overhead remaining constituents into overhead low-boiling fractions and bottom or product side stream that contains diaryl carbonate product, and (viii) recycling the diaryl carbonate product directly to the transesterification reaction.

    摘要翻译: 公开了碳酸二芳酯与二羟基芳基化合物的熔融酯交换反应的改进。 改进需要以下步骤:(i)将所得蒸汽流引入第一蒸馏塔的中间高度,和(ii)将蒸汽流分离成含有高纯度单羟基芳基化合物和第一底部产物的顶部产物,以及 (iii)将(ii)的高纯度单羟基芳基化合物再循环到反应中,和(iv)在第二蒸馏塔的中间部分引入第一底部产物,和(v)将所述第一底部产物分离成高沸点底部 副产物和塔顶残留组分,和(vi)在第三蒸馏塔的中间高度引入塔顶剩余成分,和(vii)将塔顶剩余组分分离成塔顶低沸点馏分和底部或产物侧流,其含有 碳酸二芳基酯产物,和(viii)将碳酸二芳基酯产物直接再循环到酯交换反应中。