公开(公告)号：WO2022136403A1

公开(公告)日：2022-06-30

申请号：PCT/EP2021/087045

申请日：2021-12-21

Applicant: HUNTSMAN ADVANCED MATERIALS (SWITZERLAND) GMBH

Inventor： CASSINGHAM, Darryl, Miles ,  FEKETE, Laszlo ,  NICOLLET, Michael ,  GRACIET, Jean-Christophe ,  ROENTGEN, Georg

IPC: C14C3/08 ,  C14C3/28 ,  D06P3/32 ,  C14C3/26 ,  D06P1/645

Abstract: The present invention relates to the use of reactive colourless and metal-free protein cross-linking agents for the cross-linking (tanning) of protein-containing substrates, said agents are environmentally friendly and give an improved fixation yield, a long-term cross-linking (tanning) stability and good washing off properties. The present invention further relates to processes for the cross-linking (tanning) of protein-containing substrates thereby creating an environmentally friendly process which minimizes the use of chemicals and further improves the quality and efficiency of the tanning and dyeing process.

公开(公告)号：WO2019158341A1

公开(公告)日：2019-08-22

申请号：PCT/EP2019/051825

申请日：2019-01-25

Applicant: HUNTSMAN ADVANCED MATERIALS (SWITZERLAND) GMBH

Inventor： CASSINGHAM, Darryl, Miles ,  ROENTGEN, Georg ,  TZIKAS, Athanassios

IPC: C14C3/08 ,  D06P1/02 ,  D06P3/00

Abstract: A process for the simultaneous tanning and dyeing of collagen containing fibrous material, wherein the said material is treated with a liquor containing at least one reactive dyestuff selected from the group of formula (1): A 1 -(Z 1 ) 2-3 and (2)and wherein A 1 , A 2 and A 3 are each independently of the others the radical of a monoazo, polyazo, metal-complexed azo, anthraquinone, phthalocyanine, formazan or dioxazine chromophore having at least one sulfo group, B is an organic bridge member, Q 1 , Q 2 , Q 3 and Q 4 are each independently of the others hydrogen or unsubstituted or substituted C 1 -C 4 alkyl, G 1 und G 2 are halogen, 3-carboxypyridin-1-yl or 3-carbamoylpyridin-1-yl, (Z 1 ) 2-3 is 2 to 3 identical or different fiber reactive radicals, Z 2 and Z 3 are each independently of the other identical or different fiber reactive radicals, and b is the number 0 or 1, by combining two steps of leather production, tanning and dyeing, into a single step, thus, preserving resources and reducing the environmental impact.