Preparation of diallyl dimethyl ammonium chloride and polydiallyl
dimethyl ammonium chloride
    21.
    发明授权
    Preparation of diallyl dimethyl ammonium chloride and polydiallyl dimethyl ammonium chloride 失效
    二烯丙基二甲基氯化铵和聚二烯丙基二甲基氯化铵的制备

    公开(公告)号:US4151202A

    公开(公告)日:1979-04-24

    申请号:US934923

    申请日:1978-08-18

    CPC分类号: C08F26/04 C07C17/38

    摘要: Water-soluble polymers of diallyl dimethyl ammonium chloride can be prepared from monomer solution containing a large amount of an alkali metal halide salt. Additionally, a method is disclosed for making high quality monomer which involves purification of allyl chloride which is used to prepare the starting monomeric material, optimum temperature control during caustic addition, and partial distillation to remove harmful impurities.

    摘要翻译: 二烯丙基二甲基氯化铵的水溶性聚合物可以由含有大量碱金属卤化物盐的单体溶液制备。 此外,公开了一种制造高纯度单体的方法,其涉及纯化用于制备起始单体材料的烯丙基氯,苛性加料期间的最佳温度控制和部分蒸馏以除去有害杂质。

    Method of clarifying phosphoric acid using high charge sulfonic-type
polymers
    25.
    发明授权
    Method of clarifying phosphoric acid using high charge sulfonic-type polymers 失效
    使用高电荷磺酸型聚合物澄清磷酸的方法

    公开(公告)号:US5173280A

    公开(公告)日:1992-12-22

    申请号:US776101

    申请日:1921-10-15

    IPC分类号: C01B25/235

    CPC分类号: C01B25/235

    摘要: A method for clarifying phosphoric acid by flocculation or coagulation of solids wherein an effective amount of a polymer having a predominantly sulfonic functionality is used as the clarification aid. Preferred polymers are high molecular weight acrylamide/acrylamido methylpropyl sulfonic acid-type (AM/AMPSA) polymers which are predominantly AMPSA.

    摘要翻译: 用于通过固体的絮凝或凝结来澄清磷酸的方法,其中使用有效量的具有主要为磺酸官能团的聚合物作为澄清助剂。 优选的聚合物是主要是AMPSA的高分子量丙烯酰胺/丙烯酰胺基甲基丙基磺酸型(AM / AMPSA)聚合物。

    Method for producing free-flowing water-soluble polymer gels
    26.
    发明授权
    Method for producing free-flowing water-soluble polymer gels 失效
    用于生产自由流动的水溶性聚合物凝胶的方法

    公开(公告)号:US4666964A

    公开(公告)日:1987-05-19

    申请号:US722050

    申请日:1985-04-11

    摘要: The instant invention is directed to a method for preparing free-flowing, water-soluble polymer gels comprising:(a) reducing the size of water-soluble polymer gels by a size-reduction means, so as to produce polymer gel particles which are less than 1/2 inch in their longest dimension; and(b) adding to the size-reduced polymer gels of Step (a) 0.001 to 20 percent, by weight, of an amphipathic compound, thereby reducing the adhesion of said gel particles to themselves and other substances.The instant invention is also directed to a free-flowing, water-soluble polymer gel admixture comprising:(a) size-reduced, water-soluble polymer gel particles, wherein said gel particles are less than 1/2 inch in their longest dimension; and(b) an amphipathic compound.

    摘要翻译: 本发明涉及一种制备自由流动的水溶性聚合物凝胶的方法,其包括:(a)通过减小尺寸的方法减小水溶性聚合物凝胶的尺寸,以便产生较少的聚合物凝胶颗粒 超过1/2英寸的最长尺寸; 和(b)向步骤(a)的尺寸减小的聚合物凝胶中加入0.001至20重量%的两亲性化合物,从而降低所述凝胶颗粒对其自身和其它物质的粘附性。 本发明还涉及一种自由流动的水溶性聚合物凝胶混合物,其包含:(a)尺寸减小的水溶性聚合物凝胶颗粒,其中所述凝胶颗粒的最长尺寸小于1/2英寸; 和(b)两亲性化合物。

    Preparation of a manniched polyacrylamide quarternaries thereof
    27.
    发明授权
    Preparation of a manniched polyacrylamide quarternaries thereof 失效
    制备一种人造聚丙烯酰胺季铵盐

    公开(公告)号:US4049606A

    公开(公告)日:1977-09-20

    申请号:US705973

    申请日:1976-07-16

    摘要: Cationically modified polymers of acrylamide are prepared by adding to a polyacrylamide an aqueous solution of a lower aliphatic aldehyde followed by a lower alkyl secondary amine. The pH of the dilute solution of the acrylamide polymer which is reacted is adjusted prior to addition of the aldehyde to between 4.5 and 5.5 thereby conducting this reaction at an acidic pH. Additionally, quaternized polymers may be prepared by adding to the cationically modified polyacrylamide a lower alkyl halide quaternizing agent. The pH of the solution of the cationically modified acrylamide polymer prior to quaternization should be 7.5-8.5.

    摘要翻译: 通过向聚丙烯酰胺中加入低级脂族醛的水溶液,然后加入低级烷基仲胺来制备阳离子改性的丙烯酰胺聚合物。 在加入醛之前调节反应的丙烯酰胺聚合物的稀释溶液的pH至4.5至5.5,由此在酸性pH下进行该反应。 另外,季铵化聚合物可以通过向阳离子改性的聚丙烯酰胺中加入低级烷基卤季铵化剂来制备。 阳离子改性丙烯酰胺聚合物溶液在季铵化前的pH值应为7.5-8.5。

    Method for the concentration of water-in-oil emulsions of water soluble
vinyl addition polymers
    28.
    发明授权
    Method for the concentration of water-in-oil emulsions of water soluble vinyl addition polymers 失效
    水溶性乙烯基加成聚合物油包水乳液浓缩方法

    公开(公告)号:US4021399A

    公开(公告)日:1977-05-03

    申请号:US666361

    申请日:1976-03-12

    CPC分类号: C08F6/20

    摘要: A method for the concentration of water-in-oil emulsions of water soluble vinyl addition polymers is disclosed. The process involves distilling the water-in-oil emulsion of the water soluble vinyl addition polymer under a vacuum while maintaining the water-oil phase ratio substantially equal to the starting latex. Maintaining this ratio allows latices of this type to be concentrated to as high as 70% by weight polymer.

    摘要翻译: 公开了一种用于浓缩水溶性乙烯基加成聚合物的油包水乳液的方法。 该方法包括在真空下蒸馏水溶性乙烯基加成聚合物的油包水乳液,同时保持水 - 油相比例基本上等于起始胶乳。 保持这种比例可使这种类型的胶乳浓缩至高达70%(重量)的聚合物。