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    VERFAHREN ZUR HERSTELLUNG VON LEDER UNTER VERWENDUNG VON POLYMERISATEN
    6.
    发明授权
    VERFAHREN ZUR HERSTELLUNG VON LEDER UNTER VERWENDUNG VON POLYMERISATEN 有权
    用于生产皮革使用聚合物

    公开(公告)号：EP1651781B1

    公开(公告)日：2009-06-17

    申请号：EP04740614.5

    申请日：2004-07-03

    Applicant: BASF SE

    Inventor： HÜFFER, Stephan ,  WOLF, Gerhard ,  KLÜGLEIN, Matthias ,  BECKER, Stefan

    IPC: C14C3/22 ,  C08F220/06

    CPC classification number: C14C3/22

    Abstract: Disclosed is a method for producing leather, which is characterized in that pelts, pickled pelts, or semifinished products are treated with at least one polymer that can be obtained by copolymerizing (A) at least one ethylenically unsaturated monocarboxylic acid or dicarboxylic acid comprising 3 to 8 C atoms or at least one anhydride derived from a monocarboxylic acid or dicarboxylic acid comprising 3 to 8 C atoms, (B) at least one vinyl aromatic compound, (C) at least one alkoxylated unsaturated ether of general formula (I), (D) optionally, additional monoethylenically unsaturated monomers. The variables in formula (I) are defined as follows: R , R , R are identical or different and are selected among C1-C4 alkyl or hydrogen; R , R are identical or different and are selected among C1-C4 alkyl or hydrogen; R is selected among hydrogen, SO3M, PO3M2, C1-C30 alkyl, -CO-H (formyl), CO-C1-C20 alkyl, -CO-C6-C14 aryl; M represents alkali metal, NH4 , or CH3; n represents an integer between 3 and 100; and y represents an integer between 0 and 10.

    GERBMITTEL UND KONSERVIERUNGSMITTEL AUF DER BASIS VON DIALDEHYDEN
    8.
    发明授权
    GERBMITTEL UND KONSERVIERUNGSMITTEL AUF DER BASIS VON DIALDEHYDEN 有权
    制革和防腐剂基于二醛

    公开(公告)号：EP1506319B1

    公开(公告)日：2009-08-05

    申请号：EP03749808.6

    申请日：2003-05-02

    Applicant: BASF SE

    Inventor： HÜFFER, Stephan ,  PABST, Gunther ,  TAEGER, Tilman, Lüdecke ,  SCHROEDER, Stefan ,  WOLF, Gerhard

    IPC: C14C3/16 ,  C07C45/72

    CPC classification number: C07C45/72 ,  C14C3/16

    Abstract: The invention relates to a tanning agent that is produced by reacting at least one aldehyde of general formula (I) with at least another identical or different aldehyde of formula (I), wherein the variables are defined as follows: Z is a single chemical bond, an optionally substituted C1-C12-alkyl, an optionally substituted C5-C12-cycloalkyl or an optionally substituted C6-C14-aryl, wherein the reaction is carried out in the presence of an acid catalyst and optionally in the presence of at least another carbonyl compound of formula (II), R to R represent, independent of one another, hydrogen, optionally substituted C1-C12-alkyl, optionally substituted C3-C12-cycloalkyl, optionally substituted C7-C13-aralkyl or optionally substituted C6-C14-aryl, provided that at least another aldehyde of formula (I) in which the radical of Z contains alpha hydrogen atoms or at least another carbonyl compound of formula (I) is present when Z is a single chemical bond or a radical without any hydrogen atoms. The invention also relates to a method for the production of said tanning agent, to the utilization thereof as curing agent, particularly for pretannage, tannage or retannage of animal skins using the inventive tanning agents. The invention further relates to a powder active agent containing one or more of said inventive tanning agents, to a method for the production of said powder active agents and to the use thereof as curing agent and to leather produced using the inventive tanning agents or the inventive method.

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