Process of making sodium perborate
    1.
    发明授权
    Process of making sodium perborate 失效
    制备过硼酸钠的方法

    公开(公告)号:US4298585A

    公开(公告)日:1981-11-03

    申请号:US140703

    申请日:1980-04-16

    IPC分类号: C01B15/12

    CPC分类号: C01B15/12

    摘要: In a process of making sodium perborate, crystallization is performed in the presence of an organic polymer with a high potential content of free carboxylic groups derived from maleic anhydride, selected from the copolymers of maleic anhydride with an organic compound with an ethylene bond. The process is applicable to obtaining sodium perborate crystals of high apparent density of good resistance to abrasion and of limited, relatively high granulometric size.

    摘要翻译: 在制备过硼酸钠的过程中,在有机聚合物的存在下进行结晶,所述有机聚合物具有高马来酸酐与有机化合物与乙烯键的共聚物的马来酸酐的游离羧基的潜在含量。 该方法适用于获得具有良好耐磨性和有限的较高粒度尺寸的高表观密度的过硼酸钠晶体。

    Scale-inhibiting compositions for aqueous solutions
    2.
    发明授权
    Scale-inhibiting compositions for aqueous solutions 失效
    用于水溶液的阻垢组合物

    公开(公告)号:US4148728A

    公开(公告)日:1979-04-10

    申请号:US743619

    申请日:1976-11-22

    摘要: Compositions for inhibiting the deposition of scale from aqueous solutions onto surfaces in contact with the solutions, such compositions comprising at least one fluorocarbon which will deposit on such surface, exemplary fluorocarbons being at least one of the following: ##STR1## where n is an integer from 2 to 20, the compositions optionally containing hydroxyethylenediphosphonic acid, together with methods for treating surfaces with such fluorocarbons.

    摘要翻译: 用于抑制水溶液沉积到与溶液接触的表面上的表面的组合物,所述组合物包含至少一种将沉积在该表面上的碳氟化合物,示例性碳氟化合物是以下至少一种:CnF2n + 1C2H4N(C2H4OH)2 CnF2n + 1C2H4SO2NH(CH2)3N(CH3)2(CnF2n + 1C2H4S)2其中n为2至20的整数,任选含有羟基二膦酸的组合物,以及用这种碳氟化合物处理表面的方法。