Light-colored polycarboxylated polysaccharide tanning agent, and preparation method and use thereof

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United States of America Patent

PATENT NO 11834724
APP PUB NO 20220251672A1
SERIAL NO

17687715

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Abstract

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A light-colored polycarboxylated polysaccharide tanning agent, and a preparation method and use thereof are provided. The light-colored polycarboxylated polysaccharide tanning agent includes the following raw materials: a polysaccharide, an organic solvent, a catalyst, and hydrogen peroxide. Based on a weight of the polysaccharide, a weight of the organic solvent accounts for 1 wt % to 15 wt %, a weight of the catalyst accounts for 0.05 wt % to 2 wt %, and a weight of the hydrogen peroxide accounts for 30 wt % to 80 wt %. The preparation method provided by the present disclosure adopts a two-phase solution system. Compared with the existing preparation technologies, the preparation method of the present disclosure can efficiently extract and remove colored substances produced during an oxidation process, and can timely block a polymerization reaction of the colored substances with an oxidized polysaccharide, such as to significantly reduce a chromaticity of an oxidized product.

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Patent Owner(s)

Patent OwnerAddress
SICHUAN UNIVERSITYNO 23 GROUP 4 WANFU XIPU TOWN PIXIAN COUNTY CHENGDU CITY SICHUAN PROVINCE 610000 CHENGDU CITY SICHUAN PROVINCE 610000

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cao, Mingrong Chengdu, CN 6 24
Guo, Xueru Yulin, CN 1 0
Shi, Bi Chengdu, CN 9 9
Wang, Yanan Chengdu, CN 52 37
Yu, Yue Chengdu, CN 280 2832
Zeng, Yunhang Chengdu, CN 2 0
Zhang, Wenhua Chengdu, CN 76 2386
Zhou, Jianfei Chengdu, CN 6 0

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