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    22.
    发明专利
    未知

    公开(公告)号：DE10249077A1

    公开(公告)日：2004-04-29

    申请号：DE10249077

    申请日：2002-10-21

    Applicant: BASF AG

    Inventor： TAEGER TILMAN LUEDECKE ,  PABST GUNTHER ,  LAMALLE PHILIPPE ,  HUEFFER STEPHAN ,  SCHROEDER STEFAN

    IPC: C14C1/06 ,  C14C13/02 ,  C14C1/00 ,  C14C3/00 ,  C14C5/00

    Abstract: Leather is produced by a process comprising at least two of the following process steps A) to D): A) use of one or more polyelectrolytes in the production of semifinished products or intermediate products, comprising the addition of one or more polyelectrolytes in at least one of the steps (a) to (d) (a) together with from 0 to 1.5% by weight, based on the salted weight, of lime, immediately before or during liming, (b) before or during deliming, (c) before or during bating, (d) together with, altogether, from 0 to 3% by weight, based on the pelt weight, of alkali metal or alkaline earth metal salt, immediately before or during pickling; B) treatment of the hides during liming in an aqueous liquor with one or more compounds of the formula B.1 or the corresponding alkali metal, alkaline earth metal, ammonium or phosphonium salts thereof, R 10 and X 1 to X 4 having the meanings stated in the description, with the proviso that at least two mercapto groups are present in the compound or the compounds B.1; C) use of degreasing agents of the formula C.1 for degreasing pelts, hides or other intermediate stages and semifinished products in leather production, n and R 16 to R 21 having the meanings stated in the description; D) tanning with the use of a tanning agent which can be prepared by reacting at least one aldehyde of the formula D.1, with at least one further identical or different aldehyde of the formula D.1 in the presence of an acidic catalyst and optionally in the presence of at least one further carbonyl compound of the formula D.2 Z and R 22 to R 25 having the meanings stated in the description, with the proviso that, when Z corresponds to a single chemical bond or a radical without alpha-hydrogen atoms, at least one further aldehyde of the formula D.1, in which Z contains alpha-hydrogen atoms, or at least one further carbonyl compound of the formula D.2 is present.

    26.
    发明专利
    未知

    公开(公告)号：DE10147650A1

    公开(公告)日：2003-04-10

    申请号：DE10147650

    申请日：2001-09-27

    Applicant: BASF AG

    Inventor： HUEFFER STEPHAN ,  SCHUERMANN GREGOR ,  NOERENBERG RALF

    IPC: C08F8/00 ,  C08G81/02 ,  B01D19/04 ,  C11D1/10 ,  C11D1/72 ,  C11D3/37 ,  C23F11/173 ,  C23G5/036 ,  C08F10/10 ,  B01F17/52

    Abstract: The invention relates to ampiphilic compounds and mixtures thereof, methods for production and use thereof in oil-in-water emulsions. The compounds are made up of a lipophilic and a hydrophilic part. Both parts are linked together by means of a linker derived from succinic acid. The lipophilic part is formed from a polyisobutylene group with a number-average molecular weight Mn of 300 to 10000. The hydrophilic part is characterised in preferably having two polyethylene glycol chains which can be produced by reaction of OH, -N(H)- and/or -NH2 with ethylene oxide. A globular non-linear structure for the hydrophilic part is thus achieved, such that the hydrophilic character of said compounds predominates and makes the same particularly suitable for oil-in-water emulsions. The invention further relates to preparations for the treatment of metal surfaces, in particular for corrosion protection, comprising at least one said compound, at least one solvent which can dissolve, disperse or emulsify said compound(s) and optionally further components. Furthermore, a method for treatment of metal surfaces by bringing the metal surface into contact with said preparation and coated metal surfaces are disclosed.

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