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    • 6. 发明申请
      WO2020044250A1 METAL-FREE TANNING METHOD 审中-公开
    • METAL-FREE TANNING METHOD
    • WO2020044250A1
    • 2020-03-05
    • PCT/IB2019/057231
    • 2019-08-28
    • SANTORI PELLAMI S.P.A.
    • SANTORI, Andrea , SANTORI, Sara
    • C14C3/16 , C14C3/28 , C14C1/08 , C14C3/10 , D06P3/32
    • Method (1) for metal-free tanning of a quantity of hide having initial weight (w), said quantity of hide being contained in a drum, wherein said method (1) comprises at least one tanning treatment (B) of said hide including at least the following operating steps: B.1 feeding aliphatic aldehyde into said drum, in a percentage ranging between about 1% and 3% by weight with respect to the initial weight (w) of said hide, optionally equal to about 2% by weight, and B.2 moving said drum for a time period of at least about 10 min, optionally approximately 20 min at an operating speed between 1 and 8 revolutions/minute, preferably comprised between 4 and 5 revolutions/minute; B.3 feeding citric acid into said drum, in a percentage ranging between about 0.1% and 0.3% by weight with respect to the initial weight (w) of said hide, optionally equal to about 0.2% by weight, and B.4 moving said drum for a time period of at least about other 10 min, optionally approximately 20 min at said operating speed; B.5 feeding aliphatic aldehyde into said drum, in a percentage ranging between about 1% and about 3% by weight with respect to the initial weight (w) of said hide, optionally equal to about 2% by weight, and B.6 moving said drum for a time period of at least about 150 min, optionally approximately 180 min at said operating speed; B.7 feeding sodium formate into said drum, in a percentage ranging between about 0.3% and about 0.7% by weight with respect to the initial weight (w) of said hide, optionally equal to about 0.5% by weight, and B.8 moving said drum for a time period of at least about 20 min, optionally approximately 30 min at said operating speed; B.9 feeding magnesium oxide into said drum, in a percentage ranging between about 0.3% and about 0.7% by weight with respect to the initial weight (w) of said hide, optionally equal to about 0.5% by weight, and B.10 moving said drum for a time period of at least about 60 min, optionally approximately 90 min at said operating speed; B.11 feeding water into said drum, at a temperature ranging between about 30°C and about 60°C, optionally equal to about 50°C, in a percentage ranging between about 30% and 50% by weight with respect to the initial weight (w) of said hide, optionally equal to about 40% by weight, and B.12 moving said drum for a time period of at least about 100 min, optionally approximately 120 min at said operating speed; B.13 feeding aliphatic aldehyde into said drum, in a percentage ranging between about 1% and 5% by weight with respect to the initial weight (w) of said hide, optionally equal to about 3% by weight, and B.14 moving said drum for a time period of at least about 100 min, optionally approximately 120 min at said operating speed; and then B.15 moving said drum for a maintaining period comprised between about 10 and about 16 hours, optionally approximately 14 hours, at a first maintaining speed ranging between about 1 and 5 revolutions/hour, optionally comprised between 2 and 4 revolutions/hour, even more optionally equal to about 3 revolutions/hour.
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Global Dossier Espacenet 法律信息 同族专利 专利引用
    • 7. 发明申请
      WO2004037589A3 METHOD FOR PRODUCING LEATHER 审中-公开
    • METHOD FOR PRODUCING LEATHER
    • 生产皮革的方法
    • WO2004037589A3
    • 2004-06-24
    • PCT/EP0311368
    • 2003-10-14
    • BASF AG , TAEGER TILMAN LUEDECKE , PABST GUNTHER , LAMALLE PHILIPPE , HUEFFER STEPHAN , SCHROEDER STEFAN
    • TAEGER TILMAN LUEDECKE , PABST GUNTHER , LAMALLE PHILIPPE , HUEFFER STEPHAN , SCHROEDER STEFAN
    • C14C1/06 , C14C3/16 , C14C1/08
    • C14C1/065
    • The invention relates to a method for producing leather, comprising at least two of the following method steps A) to D): A) using one or more polyelectrolytes during the production of semifinished or intermediate products, involving the addition of one or more polyelectrolytes in at least one of steps (a) to (d): (a) together with 0 to 1.5 % by weight of lime, with regard to the weight of salt, immediately before or in the lime pit; (b) before or during deliming; (c) before or during bating; (d) together with, in total, 0 to 3 % by weight of alkaline salt or alkaline earth salt, with regard to the pelt weight, immediately before or in the pickle solution; B) in the lime pit, treating the skins in an aqueous liquor with one or more compounds of general formula (B.1) or with their corresponding alkali metal salts, alkaline earth metal salts, ammonium salts or phosphonium salts, whereby variables R and X to X have the meanings as cited in the description, with the provision that at least two mercapto groups are contained in the compound or compounds B.1; C) using degreasing agents of general formula (C.1) for degreasing pelts, skins or other intermediate stages and semifinished products during the production of leather, whereby variables n and R to R have the meanings as cited in the description; D) tanning by using a tanning agent that can be produced by reacting at least one aldehyde of general formula (D.1) with at least one other identical or different aldehyde of formula (D.1) in the presence of an acid catalyst and, optionally, in the presence of at least one additional carbonyl compound of formula (D.2), whereby variables Z and R to R have the meanings as cited in the description, with the provision that, in the event Z corresponds to a chemical single bond or to a radical without alpha -hydrogen atoms, at least one additional aldehyde of formula (D.1), in which radical Z contains alpha -hydrogen atoms, or at least one additional carbonyl compound of formula (D.2) is present. The invention also relates to leather that is produced according to the inventive method.
    • 本发明涉及一种用于生产皮革的方法，包括至少两个以下步骤a）至d）组成：a）在生产的半成品或中间产品，该方法包括在至少一种中加入一种或多种聚电解质使用一种或多种聚电解质的 步骤（a）至（d）：（一）连同0〜1.5重量％的石灰，基于该盐腌重量，立即之前或期间石灰，（b）之前或期间，脱灰，（c）中 之前或期间酸洗，（d）用合计为0〜3重量％的碱金属或碱土金属的盐，基于所述毛皮重量一起，之前立即或过程中酸洗; B）治疗在含水液体中的石灰含有通式（B.1）或它们的相应的碱金属，碱土金属，铵或鏻盐，其中变量R <10>和X <1>到的一种或多种化合物的皮 X 4具有在说明书中给出的含义，条件是在一种或多种化合物B.1中存在至少两个巯基; C）Entfettungsmittteln的使用通式（C.1）至R <21>的含义引用在脱脂毛皮，皮革，或其它中间体和半成品在制作皮革的描述中，其中，所述变量n和R <16>; d）鞣制使用可以由通式（D.1）的至少一种醛的反应来制备鞣剂，与下式的至少一个另外的相同或不同的醛在酸催化剂的存在下和任选地在至少一个另外的D.1的存在 式（D.2）的羰基化合物中，变量Z和R <22>至R <25>在本说明书中已经给出的含义，条件是对于该情况下Z是具有没有alpha单一化学键或基团，条件 氢对应于式D.1，其中Z含有的α-氢原子，或式D.2的至少一个另外的羰基化合物的存在的至少一个另外的醛。 此外，本发明涉及根据本发明方法生产的皮革。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Global Dossier Espacenet 法律信息 同族专利 专利引用
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