Polymeric sulfide mineral depressants
    2.
    发明授权
    Polymeric sulfide mineral depressants 失效
    聚合硫化物矿物抑制剂

    公开(公告)号:US4902764A

    公开(公告)日:1990-02-20

    申请号:US157559

    申请日:1988-02-19

    IPC分类号: B03D1/016

    摘要: A novel polymer composition comprising recurring units of the formula: ##STR1## wherein each R.sup.1 is, individually, hydrogen or C.sub.1 -C.sub.4 alkyl; each R.sup.5, individually, is hydrogen or a C.sub.1 -C.sub.4 lower alkyl group; X is OH or SH; Y is OR.sup.2, SR.sup.2, NR.sub.2.sup.2, or NR.sup.2 -NR.sub.2.sup.2 ; R.sup.2 is hydrogen, a C.sub.1 -C.sub.4 lower alkyl or a C.sub.1 -C.sub.4 substituted lower alkyl, no more than one of Y and X being hydroxyl, and M is hydrogen, an alkali metal cation or an ammonium ion; x represents a residual mole percent fraction; y is a mole percent fraction ranging from about 0.5% to about 25%; z is a mole percent fraction ranging from about 0% to about 25%; and the molecular weight of the polymer is between about 1,000 and 500,000.

    摘要翻译: 一种新型聚合物组合物,其包含下式的重复单元:其中每个R 1分别为氢或C 1 -C 4烷基; 每个R 5分别为氢或C 1 -C 4低级烷基; X是OH或SH; Y是OR2,SR2,NR22或NR2-NR22; R2是氢,C1-C4低级烷基或C1-C4取代的低级烷基,Y和X中不超过一个是羟基,M是氢,碱金属阳离子或铵离子; x表示残留摩尔百分数; y是约0.5%至约25%的摩尔百分比; z是约0%至约25%的摩尔百分比; 并且聚合物的分子量在约1,000和500,000之间。