PRE-TREATMENT SOLUTION FOR NATURAL LEATHER AND NATURAL LEATHER DYEING METHOD USING THIS SOLUTION

VN10061435BActive Publication Date: 2026-10-01EVERLIGHT CHEMICAL INDUSTRIAL CORPORATION

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Patent Information

Application Number: VN1202306809
Authority / Receiving Office: VN · VN
Patent Type: Patents
Current Assignee / Owner
Filing Date: 2023-09-29
Publication Date: 2026-10-01
Estimated Expiration: 2043-09-29

Application Information

Patent Timeline

29 Sep 2023

Application

VN1202306809

01 Oct 2026

Publication

VN10061435B

Inventors: Shun-Te LIN; Chih-Chung LAI

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Abstract

The invention relates to a pre-treatment solution for raw hides, comprising: 5% by weight to 20% by weight of PEG with an average molecular weight of 190 to 210; 3% by weight to 10% by weight of PEG with an average molecular weight of 380 to 420; 0.5% by weight to 5% by weight of PEG with an average molecular weight of 1800 to 2200; 0.5% by weight to 5% by weight of PEG with an average molecular weight of 3600 to 4400; and 60% by weight to 91% by weight of solvent. Furthermore, the invention proposes a method for dyeing raw hides using the aforementioned pre-treatment solution.

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