FORMULATION FOR USE IN CHROME OR CHROME-FREE TANNAGE

摘要

The present invention relates to one kind to be used for chrome-free tanning or tanning. The ingredient includes clay mineral, is vigorously stirred in water at 30 minutes, and in the average grain diameter μm that 50 °C have less than 2, bimodal size distribution, by the first particulate fraction, whose average grain diameter is less than 0.5 μm and the second coarse component, for whose μm average grain diameter less than 5, described value is the measuring method defined according to ISO 13320-1, by the ratio of combined laser light diffraction and light diffusion, is located at the first particulate fraction in 10 to 90 weight %. Said preparation further includes one or more substances from one or more following groups: organic polymer, aldehyde tanning agent, sulfone tanning agent, resin tanning agent, phenol tanning agent, fatting agent, vegetable tanning agent, dyestuff and pigment.