Process for preparing high-molecular weight acrylamide polymer
    2.
    发明授权
    Process for preparing high-molecular weight acrylamide polymer 失效
    制备高分子量丙烯酰胺聚合物的方法

    公开(公告)号:US5668229A

    公开(公告)日:1997-09-16

    申请号:US747269

    申请日:1996-11-12

    CPC分类号: C08F20/56

    摘要: A process for preparing an acrylamide polymer is herein disclosed which comprises the step of initiating polymerization in the presence of an oxidation-reduction system polymerization initiator comprising two or more kinds of oxidizing agents and a reducing agent. According to this process, the polymerization rate can be remarkably increased without bringing about a decrease in the molecular weight of the polymer, and hence, restriction on manufacturing facilities and apparatuses can be relieved and productivity can be remarkably enhanced, which permits a decrease in manufacturing cost.

    摘要翻译: 本文公开了一种制备丙烯酰胺聚合物的方法,其包括在包含两种或更多种氧化剂和还原剂的氧化还原体系聚合引发剂存在下引发聚合的步骤。 根据该方法,聚合速度可以显着提高,而不会导致聚合物的分子量降低,因此可以减轻制造设备和装置的限制,并且可以显着提高生产率,这允许制造的减少 成本。

    Amphipathic compound having succinic acid skeleton
    3.
    发明授权
    Amphipathic compound having succinic acid skeleton 失效
    具有琥珀酸骨架的两亲化合物

    公开(公告)号:US06359093B1

    公开(公告)日:2002-03-19

    申请号:US09505440

    申请日:2000-02-16

    IPC分类号: C08L3314

    摘要: An amphipathic compound represented by any of the following Formulas: (R1 is a linear or branched, saturated hydrocarbon group having 6 to 48 carbon atoms, or a linear or branched, unsaturated hydrocarbon group containing 1 to 12 unsaturated double bond and having 6 to 48 carbon atoms; Y is NH, N—(CH2—CH═CH2), or O; Q is —CH2—C(R2)═CH2 or —R4—O—CO—C(R2)═CH2; and M is alkali metal, an ammonium group, or —(CH2CH2O)mH), a copolymer of the amphipatic compound with a copolymerizable ethylenically unsaturated compound and, a paper making additive containing a water soluble or dispersible high molecular compound as an active ingredient and processes for producing these high molecular compounds.

    摘要翻译: 由下式中的任何一种表示的两性化合物:(R1是碳原子数为6〜48的直链或支链饱和烃基,或含有1〜12个不饱和双键的直链或支链不饱和烃基,6〜48 碳原子; Y是NH,N-(CH 2 -CH = CH 2)或O; Q是-CH 2 -C(R 2)= CH 2或-R 4 -O-CO-C(R 2)= CH 2; M是碱 金属,铵基或 - (CH 2 CH 2 O)m H),两性化合物与可共聚的烯键式不饱和化合物的共聚物,以及含有水溶性或分散性高分子化合物作为活性成分的造纸添加剂及其制备方法 高分子化合物。