Electrostatic deposition of swellable, modified cellulose ether on water
wet hydrophilic substrate
    1.
    发明授权
    Electrostatic deposition of swellable, modified cellulose ether on water wet hydrophilic substrate 失效
    可溶胀的改性纤维素醚在水湿亲水底物上的静电沉积

    公开(公告)号:US4096289A

    公开(公告)日:1978-06-20

    申请号:US750433

    申请日:1976-12-14

    摘要: Process for the transformation of comminuted and modified cellulose ether swellable with water, into a material that may easily be further processed and may thus be used without difficulty in particular in the production of hygienic pads, napkins, bandages, tampons, wrapping papers, insulating material, household papers and similar articles. In said process the modified cellulose ether is attached by electrostatic flocking to at least one surface of a web-shaped hydrophilic support that has been wetted with water and the support is dried.

    摘要翻译: 用于水可膨胀的粉碎和改性纤维素醚转化的方法可以容易地进一步加工并因此可以毫无困难地使用,特别是生产卫生垫,餐巾,绷带,卫生棉条,包装纸,绝缘材料 家用纸和类似物品。 在所述方法中,改性纤维素醚通过静电植绒连接到已经用水润湿并且载体干燥的网状亲水载体的至少一个表面上。

    Water soluble copolymers containing vinyl imidazole as drilling fluid
additives
    3.
    发明授权
    Water soluble copolymers containing vinyl imidazole as drilling fluid additives 失效
    含有乙烯基咪唑作为钻井液添加剂的水溶性共聚物

    公开(公告)号:US4471097A

    公开(公告)日:1984-09-11

    申请号:US338543

    申请日:1982-01-11

    摘要: Auxiliary agents for chemical flooding of petroleum deposits and auxiliary agents used in well drilling fluids are water-soluble copolymers containing a statistical distribution of(a) 5 to 95% by weight of structural units of formula I ##STR1## (b) 0 to 30% by weight of structural units of formula II ##STR2## (c) 0 to 80% by weight of structural units of formula III ##STR3## (d) 5 to 60% by weight of structural units of formula IV ##STR4## wherein R.sup.1 and R.sup.2 are the same or different and represent hydrogen, methyl, or ethyl or together are trimethylene to cyclic pentamethylene;R.sup.3 represents hydrogen or methyl;R.sup.4 represent a imidazolyl-(1) or imidazolyl-(2) moiety;Y is a single covalent bond or the formula --CO--NH--C(CH.sub.3).sub.2 --CH.sub.2 --; andX.sup.+ is a cation.

    摘要翻译: 用于钻井液中的石油沉积物和辅助剂的化学驱油辅助剂是水溶性共聚物,其含有(a)5-95重量%的式I(b)的结构单元的统计分布, (C)0至80重量%式(II)的结构单元(c)0至80重量%式III结构单元(III)(d)(d)5-60重量% 式IV的单元(IV)其中R 1和R 2相同或不同并且表示氢,甲基或乙基,或一起是三亚甲基至环状五亚甲基; R3表示氢或甲基; R4表示咪唑基 - (1)或咪唑基 - (2)部分; Y是单个共价键或式-CO-NH-C(CH 3)2 -CH 2 - ; 而X +是阳离子。