Melt processable aliphatic polycarbonate terpolymers
    2.
    发明授权
    Melt processable aliphatic polycarbonate terpolymers 失效
    可熔融加工的脂肪族聚碳酸酯三元共聚物

    公开(公告)号:US4851507A

    公开(公告)日:1989-07-25

    申请号:US171054

    申请日:1988-03-21

    IPC分类号: C08G64/02 C08G64/34

    CPC分类号: C08G64/0208 C08G64/34

    摘要: The addition of a small amount of a second epoxide to the copolymerization of ethylene oxide or propylene oxide with carbon dioxide can give a melt processable polyalkylene carbonate terpolymer which can be processed without extensive thermal decomposition. This invention has particular utility in thermoplastic applications such as injection molding, blow molding, and film manufacture.

    摘要翻译: 在环氧乙烷或环氧丙烷与二氧化碳的共聚合中加入少量第二环氧化物可以得到可熔融加工的聚亚烷基碳酸酯三元共聚物,可以在没有广泛热分解的情况下进行加工。 本发明在诸如注塑,吹塑和薄膜制造的热塑性应用中具有特别的用途。

    Method for producing a vanadium-titanium-tin catalyst exhibiting
improved intrinsic surface area
    4.
    发明授权
    Method for producing a vanadium-titanium-tin catalyst exhibiting improved intrinsic surface area 失效
    显示改善的本征表面积的钒 - 钛 - 锡催化剂的制备方法

    公开(公告)号:US4448898A

    公开(公告)日:1984-05-15

    申请号:US386168

    申请日:1982-06-07

    申请人: Hsiang-Ning Sun

    发明人: Hsiang-Ning Sun

    IPC分类号: B01J23/22 B01J21/06 B01J23/14

    CPC分类号: B01J23/22

    摘要: Mixed vanadium-titanium-tin oxides catalysts having intrinsic surface areas before surface modification, greater than about 40 m.sup.2 /gram are disclosed. These catalysts are suitable for use in the preparation of acetic acid by gas-phase oxidation of butenes.

    摘要翻译: 公开了在表面改性之前具有大于约40m 2 / g的固有表面积的混合的钒 - 钛 - 锡氧化物催化剂。 这些催化剂适用于通过丁烯气相氧化制备乙酸。