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    7.
    发明专利
    未知

    公开(公告)号：NO300643B1

    公开(公告)日：1997-06-30

    申请号：NO914252

    申请日：1991-10-30

    Applicant: HOECHST AG

    Inventor： HILLE MARTIN ,  WITTKUS HEINZ ,  TONHAUSER JUERGEN ,  ENGELHARDT FRITZ ,  RIEGEL ULRICH

    IPC: C04B24/16 ,  C04B24/26 ,  C08F20/52 ,  C08F26/02 ,  C08F26/10 ,  C08F220/58 ,  C08F226/04 ,  C08F226/10 ,  C08L33/24 ,  C08L33/26 ,  C08L39/00 ,  C08L39/02 ,  C09D17/00 ,  C09K8/04 ,  C09K8/24 ,  C09K8/46 ,  C09K8/487 ,  C08F226/00 ,  C09K7/02

    Abstract: The water-soluble copolymer comprises 5-90% by weight of groups of the formula in which R is hydrogen or methyl, R is C2-C10-alkylene, Me is ammonium or an alkali metal, 5-90% by weight of groups of the formula -CH=CH-CH2-N R R -CH2-CH=CH-X II in which X is a halogen, R and R , independently of one another, are C1-C6-alkyl, 0-60% by weight of groups of the formula in which R and R together are a propylene group which forms a pyrrolidone radical with inclusion of the radical and 0-30% by weight of groups of the formula -CHR -CHR - IV in which R is hydrogen or methyl, and R is CONH2, CON(CH3)2, cyano, SO3H, SO3Me, C6H4SO3H, C6H4SO3Me, CH2SO3H, CH2SO3Me, COOH, COOMe or carboxyl-C1-C15-alkyl, where Me is an ammonium cation or an alkali metal cation, and the components I to IV may be in any desired sequence. The copolymer is used as a water-binding additive for suspensions of solids, preferably for cement slurries, plaster slurries, mortar, drilling muds or pigment suspensions, or as a water-binding additive for aqueous salt solutions.

    9.
    发明专利
    未知

    公开(公告)号：MX9101832A

    公开(公告)日：1992-06-05

    申请号：MX9101832

    申请日：1991-10-29

    Applicant: HOECHST AG

    Inventor： HILLE MARTIN ,  WITTKUS HEINZ ,  TONHAUSER JURGEN ,  ENGELHARDT FRITZ ,  RIEGEL ULRICH

    IPC: C04B24/16 ,  C04B24/26 ,  C08F20/52 ,  C08F26/02 ,  C08F26/10 ,  C08F220/58 ,  C08F226/04 ,  C08F226/10 ,  C08L33/24 ,  C08L33/26 ,  C08L39/00 ,  C08L39/02 ,  C09D17/00 ,  C09K8/04 ,  C09K8/24 ,  C09K8/46 ,  C09K8/487 ,  B01F17/52 ,  C08G

    Abstract: The water-soluble copolymer comprises 5-90% by weight of groups of the formula in which R is hydrogen or methyl, R is C2-C10-alkylene, Me is ammonium or an alkali metal, 5-90% by weight of groups of the formula -CH=CH-CH2-N R R -CH2-CH=CH-X II in which X is a halogen, R and R , independently of one another, are C1-C6-alkyl, 0-60% by weight of groups of the formula in which R and R together are a propylene group which forms a pyrrolidone radical with inclusion of the radical and 0-30% by weight of groups of the formula -CHR -CHR - IV in which R is hydrogen or methyl, and R is CONH2, CON(CH3)2, cyano, SO3H, SO3Me, C6H4SO3H, C6H4SO3Me, CH2SO3H, CH2SO3Me, COOH, COOMe or carboxyl-C1-C15-alkyl, where Me is an ammonium cation or an alkali metal cation, and the components I to IV may be in any desired sequence. The copolymer is used as a water-binding additive for suspensions of solids, preferably for cement slurries, plaster slurries, mortar, drilling muds or pigment suspensions, or as a water-binding additive for aqueous salt solutions.

    10.
    发明专利
    未知

    公开(公告)号：MX196639B

    公开(公告)日：2000-05-24

    申请号：MX9602651

    申请日：1996-07-05

    Applicant: HOECHST AG

    Inventor： ENGELHARDT FRITZ ,  STUEVEN UWE ,  DANIEL THOMAS ,  HERFERT NORBERT

    IPC: A61L15/34 ,  A61L15/60 ,  C08J3/075 ,  C08J3/12 ,  C08J7/04 ,  C08L1/28 ,  C08L3/08 ,  C08L91/06 ,  C09D123/06 ,  C09D123/30 ,  C09D191/06

    Abstract: Hydraulic, highly swellable hydrogel (H)- coated with 0.05 - 2 wt.% unreactive, water-insoluble wax (w.r.t. (H)). Also claimed are: (i) the prepn. of (H) by applying the wax onto the hydrogel; and (ii) a method for preventing hydrogels getting dusty by coating them with 0.05 - 2 wt.% wax. Pref. the wax has a m.pt. or drip temp. of 30-180 degrees C and is pref. grafted montan wax or polyethylene wax (oxidate). The hydrogel is coated with 0.1-0.95 wt% wax. (H) is a polymer comprising (co)polymerised hydrophilic monomers, graft (co)polymer comprising one or more hydrophilic monomers grafted onto a suitable backbone, cross-linked cellulose- or starch ether, or natural substance swellable in aq. liq(s)..

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