Enzymatic soaking method
    1.
    发明授权
    Enzymatic soaking method 失效
    ENZYMATIC SOAKING方法

    公开(公告)号:US5089414A

    公开(公告)日:1992-02-18

    申请号:US528717

    申请日:1990-05-24

    IPC分类号: C12S7/00 C14C1/04

    CPC分类号: C14C1/04

    摘要: The soaking of hides and skins is enzymatically assisted in a method using an aqueous float having a pH from 9 to 11 which containsA) a lipase having an activity optimum in the pH region from 9 to 11,B) a protease with activity in the pH region from 9 to 11, andC) a surface active agent.

    摘要翻译: 皮肤和皮肤的浸泡在使用pH为9-11的水性漂浮物的方法中酶促辅助,其含有A)在pH范围为9至11的活性最佳的脂肪酶,B)具有活性的蛋白酶 pH范围为9至11,和C)表面活性剂。

    Method for the wet degreasing of hide and skin stock
    2.
    发明授权
    Method for the wet degreasing of hide and skin stock 失效
    皮肤和皮肤的湿润脱脂方法

    公开(公告)号:US4968621A

    公开(公告)日:1990-11-06

    申请号:US391638

    申请日:1989-08-07

    IPC分类号: C14C1/08

    CPC分类号: C14C1/08

    摘要: A method for the wet degreasing of raw hides and skins, pelts, and wet blues under the conditions of enzymatic bating, wherein enzymatic bating of the hide stock is carried out with proteolytic enzymes in the presence of synthetic surface active substances, for example, a mixture of a non-ionic emulsifier and anionic emulsifier.

    摘要翻译: 一种在酶促处理的条件下湿生皮和皮肤,毛皮和湿蓝调的湿法脱脂的方法,其中在合成的表面活性物质存在下用蛋白水解酶进行鞣制物的酶促反应,例如, 非离子乳化剂和阴离子乳化剂的混合物。

    Method for the enzymatic liming of skins and hides
    5.
    发明授权
    Method for the enzymatic liming of skins and hides 失效
    皮肤和皮革的酶液化方法

    公开(公告)号:US5525509A

    公开(公告)日:1996-06-11

    申请号:US311717

    申请日:1994-09-23

    CPC分类号: C14C1/08

    摘要: A method for preparing unhaired hides ready for tanning from hides and skins using proteolytic and lipolytic enzymes in the beamhouse, whereby in at least one of the partial steps of the beamhouse consisting of a) liming in the pH range 11.5-14 and b) bating in the pH range 5-11.5, alkaline lipases (E.C.3.1.3.) having an activity optimum in the pH range 9-11 are added to the aqueous floats corresponding to these partial steps.

    摘要翻译: 一种用于制备用于使用蛋白水解和脂肪分解酶在波纹室中从皮革和皮肤鞣制的未毛皮的方法,其中在至少一个梁室的部分步骤中,由a)在pH范围11.5-14中进行灰化和b) 在5-11.5的pH范围内,在pH范围9-11中具有最佳活性的碱性脂肪酶(EC3.1.3。)加入对应于这些部分步骤的水性漂浮物中。

    Method for liming skins and hides
    7.
    发明授权
    Method for liming skins and hides 失效
    使皮肤和皮肤变灰的方法

    公开(公告)号:US4960428A

    公开(公告)日:1990-10-02

    申请号:US303270

    申请日:1989-01-26

    IPC分类号: C14C1/06

    CPC分类号: C14C1/06

    摘要: A process for liming skins and hides with preservation and separation of the hair, including the following successive steps:(A) a soaking step in a aqueous liquor containing a surfactant;(B) an incubation step in an aqueous liquor free of inorganic sulfur but containing hydrotropes and organic sulfur compounds as unhairing agents;(C) an step for immunization of the hair at a pH between 10 and 14;(D) a hair loosening step in which inorganic sulfide is added to the float;(E) a separation step in which the hair is separated from the skins and hides; and(F) a liming step in which the pelts so obtained are limed in an aqueous alkaline liquor comprising liming aids.

    摘要翻译: 一种用于保护和分离毛发的皮肤和皮革的方法,包括以下连续步骤:(A)在含有表面活性剂的含水液体中的浸泡步骤; (B)在不含无机硫的水溶液中含有水溶助长剂和有机硫化合物作为脱毛剂的温育步骤; (C)在10至14之间的pH下免疫头发的步骤; (D)将漂白剂中加入无机硫化物的脱毛步骤; (E)分离步骤,其中毛发与皮肤和皮革分离; 和(F)如此获得的毛粒在含有灰泥助剂的含水碱性液体中变成灰泥的步骤。

    Method for producing leather
    8.
    发明申请

    公开(公告)号:US20070022541A1

    公开(公告)日:2007-02-01

    申请号:US10529744

    申请日:2003-10-14

    IPC分类号: C14C1/06

    CPC分类号: C14C1/065

    摘要: 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, R10 and X1 to X4 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 R16 to R21 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 R22 to R25 having the meanings stated in the description, with the proviso that, when Z corresponds to a single chemical bond or a radical without α-hydrogen atoms, at least one further aldehyde of the formula D.1, in which Z contains α-hydrogen atoms, or at least one further carbonyl compound of the formula D.2 is present.

    Method for producing a leather semi-finished product
    9.
    发明申请
    Method for producing a leather semi-finished product 失效
    皮革半成品的制造方法

    公开(公告)号:US20060075573A1

    公开(公告)日:2006-04-13

    申请号:US10531178

    申请日:2003-11-25

    IPC分类号: D06M19/00

    CPC分类号: C14C3/16 C14C3/28

    摘要: A semifinished leather product is produced from an animal hide by pretanning with the use of a chromium-free tanning agent and of a clay mineral which, after stirring for 30 minutes in water at 50° C. at a circumferential rotor speed of from 5 to 25 m/s, has a number average particle diameter of less than 2 μm or a bimodal particle size distribution with a first, finely divided fraction whose number average particle diameter is less than 0.5 μm and a second, coarser fraction whose number average particle diameter is less than 5 μm, determined in each case by the method according to ISO 13320-1, by combined laser light diffraction and light scattering, a proportion of the first, finely divided fraction being from 10 to 90% by weight, and drying of the pretanned animal hide to a water content of from 5 to 45% based on the total weight of the semifinished leather product.

    摘要翻译: 通过使用无铬鞣剂和粘土矿物预处理从动物皮制造半成品皮革制品,其在50℃的水中搅拌30分钟,周向转子速度为5至 25m / s,数均粒径小于2μm,或双峰粒径分布,其数均粒径小于0.5μm的第一微细分数,第二较粗颗粒的数均粒径 通过组合的激光衍射和光散射,通过根据ISO 13320-1的方法在每种情况下确定小于5um,一部分细碎部分的比例为10至90重量%,并干燥 基于半成品​​皮革制品的总重量,预制动物的水分含量为5至45%。

    Method for removing horn substance from skins, pelts or furs
    10.
    发明申请
    Method for removing horn substance from skins, pelts or furs 失效
    从皮肤,皮毛或毛皮去除角质物质的方法

    公开(公告)号:US20050229326A1

    公开(公告)日:2005-10-20

    申请号:US10513800

    申请日:2003-05-19

    IPC分类号: C14C1/06 C14C3/04 C14C3/02

    CPC分类号: C14C1/06

    摘要: Horny substances are removed from hides, pelts or skins of dead animals by treating the hides, pelts or skins in aqueous liquor with one or more compounds of the formula I or their corresponding alkali metal or alkaline earth metal salts or ammonium or phosphonium salts, the variables being defined as follows: R1 is selected from hydrogen and C1-C12-alkyl, unsubstituted or substituted by one or more S—H or O—H groups; X1 to X4 are identical or different and are selected from hydrogen, C1-C4-alkyl, O—H, S—H and N—HR2, R2 is hydrogen or C1-C12-alkyl or a C1-C4-Alkyl-C═O group, at least one radical X1 to X4 being S—H when R1 contains at least one sulfur atom and at least two radicals X1 to X4 being S—H when R1 contains no sulfur atom.

    摘要翻译: 通过用一种或多种式I化合物或其相应的碱金属或碱土金属盐或铵盐或鏻盐处理含水液体中的皮革,皮毛或皮肤,从死皮的皮革,毛皮或皮肤中去除角质物质, 变量定义如下:R 1选自氢和C 1 -C 12 - 烷基,未被取代或被一个或多个SH取代 或OH基团; X 1至X 4相同或不同,并且选自氢,C 1 -C 4 - C 4 - 烷基 ,OH,SH和N-HR 2,R 2是氢或C 1 -C 12 - C 12 - 烷基 或C 1 -C 4 - 烷基-CO基团,至少一个X 1至X 4 - 基团, 当R 1含有至少一个硫原子时为SH,当R 1为至少两个X X 1至X 4时,SH 4为SH 不含硫原子。