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    • 3. 发明申请
    • Method for the extraction of keratin from dead animal skins
    • 从死亡动物皮肤中提取角蛋白的方法
    • US20070124868A1
    • 2007-06-07
    • US10579714
    • 2004-11-12
    • Holger BuehlerJoaquim TelesCarsten SulingTilman TaegerGunther Pabst
    • Holger BuehlerJoaquim TelesCarsten SulingTilman TaegerGunther Pabst
    • C07F9/22C07F9/28
    • C14C1/06C07C323/12C07C323/15C07C323/16C07C323/17C07C2601/08C07C2601/14C14C1/065
    • horny substances are removed from hides of dead animals by a process wherein the hides of dead animals are treated with at least one substance of the formula I or at least one corresponding alkali metal, alkaline earth metal, ammonium or phosphonium salt, where R1 and R4 are identical or different and are selected from hydrogen, C6-C14-aryl and C1-C12-alkyl, unsubstituted or substituted by one or more SH or OH groups, R2 and R3 are identical or different and are selected from hydrogen, C6-C14-aryl and C1-C12-alkyl, unsubstituted or substituted by one or more SH or OH groups, at least one radical R2 or R3 not being hydrogen or R1 and R4 not being hydrogen, and it being possible in each case for two vicinal radicals R1 to R4 together to be C3-C10-alkylene, R5 is selected from hydrogen, C1-C12-alkyl, H—C═O or C1-C4-alkyl-C═O, X1, X2, X3 and X4 are selected from OH, SH and NHR5, where, if R1 to R4 contain at least one sulfur atom, at least one radical X1 to X4 is SH, and, if R1 to R4 contain no sulfur atom, at least two radicals X1 to X4 are 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,铵或鏻盐处理死亡动物的皮肤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 >至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。