公开(公告)号：WO2014162059A1

公开(公告)日：2014-10-09

申请号：PCT/FI2014/050234

申请日：2014-04-01

Applicant: TAMINCO FINLAND OY

Inventor： VAN DER BURGH, Stefan ,  BRENDLER, Dominicus

IPC: C14C3/04 ,  C01B39/02 ,  C11D3/12

CPC classification number: C14C3/04

Abstract: The present invention provides a system for tanning leather comprising from at least two tanning compositions to be used in sequence. First composition consists of zeolite having a Si to Al ratio from 0.7 to 2.5, treated with concentrated aliphatic monocarboxylic acid, the concentration of said monocarboxylic acid being more than 84% by weight, resulting in a zeolite structure which remains intact after said treatment; acidic metal salt; and a complexing agent. This first composition is in a form of a powdery solid having moisture content less than 25 %. The second composition consists of the mere zeolite treated with concentrated aliphatic monocarboxylic acid. Moreover, a method for tanning leather using said system is provided subjecting the hide to be treated to a beam house treatment followed by a modified pickling stage using a solution having a baume value less than 5 and pH from 3 to 6.

Abstract translation: 本发明提供了一种用于鞣制皮革的系统，其包括由至少两种鞣制组合物按顺序使用。 第一组成由Si至Al比为0.7至2.5的沸石组成，用浓缩的脂族一元羧酸处理，所述一元羧酸的浓度大于84重量％，导致在所述处理后保持完整的沸石结构; 酸性金属盐; 和络合剂。 该第一组合物是水分含量小于25％的粉状固体的形式。 第二组合物由仅用浓缩的脂族一元羧酸处理的沸石组成。 此外，使用所述系统来对皮革进行鞣制的方法，其特征在于，使用具有小于5和pH为3至6的波导值的溶液对皮革进行处理以进行梁屋处理，然后进行改性酸洗阶段。