Hydrogels of heterocyclic polymer, method of obtaining them, and their
use as insoluble pH-regulating pellets
    1.
    发明授权
    Hydrogels of heterocyclic polymer, method of obtaining them, and their use as insoluble pH-regulating pellets 失效
    杂环聚合物的水凝胶,获得它们的方法,以及它们作为不溶性pH调节颗粒的用途

    公开(公告)号:US5393853A

    公开(公告)日:1995-02-28

    申请号:US30308

    申请日:1993-03-29

    CPC分类号: C08F226/06

    摘要: Hydrogels presented in the form of pellets which are capable of regulating, without dissolving, any pH of an aqueous solution so as to convert it to a pH of 7. These pellets can be removed from the solution at any time without this modifying the pH, and once washed, can be used again. The velocity of buffering depends on the initial pH and can be controlled by modifying the mass and the composition of the pellets. They are obtained by copolymerization of a vinyl-heterocyclic comonomer and a divinyl comonomer in an aqueous solution at a temperature of close to 60.degree. C., in an inert atmosphere. By adjusting the proportion of crosslinking agent and the concentrations of comonomers, the crosslinking of the hydrogel is regulated in accordance with the intended use of the product.

    摘要翻译: PCT No.PCT / ES92 / 00057 Sec。 371日期1993年3月29日 102(e)1993年3月29日PCT PCT 1992年7月28日PCT公布。 出版物WO93 / 03077 日期:1993年2月18日。以粒料形式出现的水凝胶,其能够调节,而不溶解任何pH值的水溶液,以将其转化为pH7。这些颗粒可以任何方式从溶液中除去 时间没有这个改变pH值,一旦洗涤,可以再次使用。 缓冲速度取决于初始pH值,并且可以通过改变颗粒的质量和组成来控制。 它们通过乙烯基 - 杂环共聚单体和二乙烯基共聚单体在接近于60℃的温度下在惰性气氛中在水溶液中共聚获得。 通过调节交联剂的比例和共聚单体的浓度,水凝胶的交联根据产品的预期用途进行调节。