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    • 87. 发明授权
    • Water-soluble copolymers useful in drilling fluids
    • 用于钻井液的水溶性共聚物
    • US5510436A
    • 1996-04-23
    • US260037
    • 1994-06-15
    • Martin HilleHeinz WittkusJurgen TonhauserFritz EngelhardtUlrich Riegel
    • Martin HilleHeinz WittkusJurgen TonhauserFritz EngelhardtUlrich Riegel
    • C04B24/16C08F20/52C08F26/02C08F26/10C08F220/58C08F226/04C08F226/10C08L33/24C08L33/26C08L39/00C08L39/02C09D17/00C09K8/04C09K8/24C09K8/46C09K8/487C08F228/02
    • C04B24/163C04B24/16C04B24/2652C08F220/58C08F226/04C09D17/001C09K8/24C09K8/46C09K8/487
    • The water-soluble copolymer comprises 5-90% by weight of groups of the formula ##STR1## in which R.sup.1 is hydrogen or methyl, R.sup.2 is C.sub.2 -C.sub.10 -alkylene, and Me is ammonium or an alkali metal, 5-90% by weight of groups of the formula--CH.dbd.CH--CH.sub.2 --N.sup.+ R.sup.3 R.sup.4 --CH.sub.2 --CH.dbd.CH-- X.sup.- IIin which X is a halogen, R.sup.3 and R.sup.4, independently of one another, are C.sub.1 -C.sub.6 -alkyl, 0-60% by weight of groups of the formula ##STR2## in which R.sup.5 and R.sup.6 together are a propylene group which with inclusion of the radical ##STR3## forms a pyrrolidone radical, and 0-30% by weight of groups of the formula--CHR.sup.7 --CHR.sup.8 -- IVin which R.sup.7 is hydrogen or methyl and R.sup.8 is CONH.sub.2, CON(CH.sub.3).sub.2, cyano, SO.sub.3 H, SO.sub.3 Me, C.sub.6 H.sub.4 SO.sub.3 H, C.sub.6 H.sub.4 SO.sub.3 Me, CH.sub.2 SO.sub.3 H, CH.sub.2 SO.sub.3 Me, COOH, COOMe, or carboxy-C.sub.1 -C.sub.15 --alkyl, and Me is an ammonium cation or an alkali metal cation, and the order of components I to IV can be as desired.The copolymer is used as water-binding additive for suspensions of solids, preferably for cement slurries, gypsum slurries, mortars, drilling muds or pigment suspensions, or as water-binding additive for aqueous salt solutions.
    • 水溶性共聚物包含5-90重量%的式I的基团,其中R 1是氢或甲基,R 2是C 2 -C 10 - 亚烷基,Me是铵或碱金属,5-90% 的式-CH = CH-CH 2 -N + R 3 -CH 4 -CH = CH-X-II的基团,其中X是卤素,R 3和R 4彼此独立地是C 1 -C 6 - 烷基, 0-60重量%的其中R 5和R 6一起是含有基团“IMAGE”的丙烯基团的式“IMAGE”III形成吡咯烷酮基团,和0-30重量%的 其中R 7是氢或甲基,R 8是CONH 2,CON(CH 3)2,氰基,SO 3 H,SO 3 Me,C 6 H 4 SO 3 H,C 6 H 4 SO 3 Me,CH 2 SO 3 H,CH 2 SO 3 Me,COOH,COOMe或羧基-C 1 -C 15 - 烷基,Me是铵阳离子或碱金属阳离子,组分I至IV的顺序可以根据需要进行。 该共聚物用作固体悬浮液的水结合添加剂,优选用于水泥浆料,石膏浆料,砂浆,钻井泥浆或颜料悬浮液,或作为盐水溶液的水结合添加剂。