Method for treating an animal substrate
AssigneeXeros Limited
InventorsAddis Duki Feyisa, John Edward Steele
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Abstract
A method for tanning an animal substrate comprising the steps: i) agitating the animal substrate with a chromium-free tanning agent; and ii) agitating the animal substrate with a tanning agent having an oxazolidine group; wherein at least some of the agitation is performed in the presence of a solid particulate material having an average particle size of from 1 to 500 mm.
Claims37
A method for tanning an animal substrate comprising the steps:
- i) agitating the animal substrate with a chromium-free tanning agent;
- and
- ii) agitating the animal substrate with a tanning agent having an oxazolidine group;
- wherein at least some of the agitation is performed in the presence of a solid particulate material, and
- wherein the solid particulate material has an average particle size of from 1 to 500 mm.
A tanning method for improving one or more properties of an animal substrate, wherein said properties are selected from the group consisting of:
- (1) hydrothermal stability;
- (2) photochemical and/or thermal resistance;
- (3) the degree of incorporation of a tanning agent into said substrate;
- and
- (4) the degree of penetration of a tanning agent into said substrate,
- wherein said method comprises the steps of (i) agitating the animal substrate with a chromium-free tanning agent and (ii) agitating the animal substrate with a tanning agent having an oxazolidine group, wherein at least some of the agitation is performed in the presence of a solid particulate material, and wherein the solid particulate material has an average particle size of from 1 to 500 mm.
A tanned animal substrate which is prepared by a tanning method in which a solid particulate material and a tanning agent having an oxazolidine group is used, wherein the tanned animal substrate is chromium-free and exhibits an improvement in one or more properties selected from the group consisting of:
- (1) hydrothermal stability;
- (2) photochemical and/or thermal resistance;
- (3) the degree of incorporation of the tanning agent into said substrate;
- and
- (4) the degree of penetration of the tanning agent into said substrate,
- relative to an animal substrate prepared by a tanning method in which a solid particulate material is not used.
Dependencies are inferred from the claim text.