Polyether-copolycarbonates for dialysis membranes
    54.
    发明授权
    Polyether-copolycarbonates for dialysis membranes 失效
    用于透析膜的聚醚 - 共聚碳酸酯

    公开(公告)号:US4735721A

    公开(公告)日:1988-04-05

    申请号:US840179

    申请日:1986-03-17

    摘要: The present invention is directed to a process for the preparation of a segmented, aliphatic-aromatic polyether-copolycarbonate containing structural units conforming to ##STR1## wherein --D-- is a diphenolate radical and units conforming to ##STR2## wherein --O--Polyether--O-- is an aliphatic polyether-diolate radical, by the phase boundary process in which aliphatic polyether diol and a mixture of dihydroxy compounds are reacted with a carbonic acid halide which is employed in molar excess in relation to the dihydroxy compounds and in which the aqueous phase is kept at a pH value of at least 13 and where the polycondensation reaction is carried out in a reactor by addition of an amine catalyst.The invention is further directed to the polyether polycarbonate which is obtained by the process and to the preparation of membranes from said polyether copolycarbonate.

    摘要翻译: 本发明涉及一种制备分段的脂族 - 芳族聚醚 - 共聚碳酸酯的方法,其包含符合的结构单元,其中-D-是二酚盐基团和符合的单元,其中-O-聚醚 - O-是脂族聚醚 - 二醇酯基,通过相位过程,其中脂族聚醚二醇和二羟基化合物的混合物与相对于二羟基化合物摩尔过量使用的碳酸卤化物反应,其中水性 相位保持在至少13的pH值,并且其中缩聚反应在反应器中通过加入胺催化剂进行。 本发明还涉及通过该方法获得的聚醚聚碳酸酯和从所述聚醚共聚碳酸酯制备膜。

    Foils of polyacetylene
    57.
    发明授权
    Foils of polyacetylene 失效
    聚乙炔箔

    公开(公告)号:US4408027A

    公开(公告)日:1983-10-04

    申请号:US288887

    申请日:1981-07-31

    摘要: Process for the production of a suspension of polyacetylene in the form of particles having a diameter of from 0.01 to 1 mm and having a great number of fibrous appendices comprising introducing acetylene in an organic suspending agent under constant stirring, in the presence of an aluminum-containing organometallic mixed catalyst in an amount corresponding to 10 to 100 m moles aluminium per liter suspending agent, at temperatures of from -100.degree. to 80.degree. C., until a maximum of 10 g, preferably 1 to 3 g of polyacetylene per liter of suspending agent have been formed.

    摘要翻译: 制备直径为0.01〜1mm,具有大量纤维附着物的聚乙炔悬浮液的方法,其包括在持续搅拌下在有机悬浮剂中,在铝 - 含有有机金属混合催化剂,其数量相当于每升悬浮剂10-100摩尔铝,在-100至80℃的温度下,直到最大值为10克,优选1至3克聚乙炔/升 悬浮剂已经形成。