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    • 39. 发明公开
    • VERFAHREN ZUM ENTFERNEN VON HORNSUBSTANZEN AUS HÄUTEN TOTER TIERE
    • VERFAHREN ZUM ENTFERNEN VON HORNSUBSTANZEN AUSHÄUTENTOTER TIERE
    • EP1687454A1
    • 2006-08-09
    • EP04797857.2
    • 2004-11-12
    • BASF Aktiengesellschaft
    • BÜHLER, HolgerTELES, Joaquim HenriqueSÜLING, CarstenTAEGER, Tilman LüdeckePABST, Gunther
    • C14C1/06C07C321/14
    • C14C1/06C07C323/12C07C323/15C07C323/16C07C323/17C07C2601/08C07C2601/14C14C1/065
    • The invention relates to a method for the extraction of keratin from dead animal skins, characterised in the treatment of dead animal skins with a substance of general formula (I), or at least one corresponding alkali metal, earth alkali metal, ammonium, or phosphonium salt, the variables having the following definitions: R1, R4 = together or independently, H, C6-C14 aryl, C1-C12 alkyl, unsubstituted or substituted with one or several SH or OH groups, R2, R3 = together or independently, H, C6-C14 aryl, C1-C12 alkyl, unsubstituted or substituted with one or several SH or OH groups, whereby at least one of R2 or R3 is not H, or R1 and R4 are not H and two vicinal groups of R1 to R4 together may be C3-C10 alkylene, R5 = H, C1-C12 alkyl, H-C=O or C1-C4-Alkyl-C=O, X1, X2, X3 and X4 = OH, SH or NHR5, whereby where R1 to R4 contains at least one sulphur atom, at least one of X1 to X4 = SH and where R1 to R4 contains no sulphur atom, at least two of X1 to X4 = SH.
    • 角质物质通过其中用至少一种式I物质或至少一种相应的碱金属,碱土金属,铵或鏻盐处理的死亡动物的皮革的方法从死亡动物的皮革中除去,其中R 1和R 4相同或不同,并且选自氢,C 6 -C 14 - 芳基和C 6 - 未取代的或被一个或多个SH或OH基团取代的C 1 -C 12 - C 12 - 烷基,R 2和R 3 >相同或不同,并且选自氢,C 6 -C 14 - 芳基和C 1 -C 12 - 未被取代或被一个或多个SH或OH基团取代的亚烷基,至少一个R 2或R 3不是氢或R 1, / SUP>和R 4不是氢,并且在每种情况下可以将两个邻位基团R 1至R 4一起成为 C 3 -C 10 - 亚烷基,R 5 s选自氢,C 1 -C 12 - 烷基,HCO或C 1 -C 4 - 烷基 -CO,X 1,X 2,X 3和X 4选自OH,SH和NHR 其中,如果R 1至R 4含有至少一个硫原子,则至少一个基团X 1或O 2 > X 4是SH,并且如果R 1至R 4不含硫原子,则至少两个基团X 1 至X 4是SH。