Reactive dyes and preparation methods thereof

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United States of America Patent

PATENT NO 12091552
APP PUB NO 20240084144A1
SERIAL NO

18366655

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Abstract

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Disclosed are reactive dyes and preparation methods thereof. The reactive dye may be prepared using heterocyclic primary amine as a diazo component, 4,4′-diamino-2,2′-stilbenedisulfonic acid, s-triazine, or ethylenediamine as a bridging group, and a dimonochlortriazine group as an active group. The color-changing compound is covalently bonded into the fiber chemical structure by nucleophilic substitution reaction between monochlorotriazine and the hydroxyl group in a textile structure, and the size of the conjugated system and the range of electron delocalization of the dye are changed by a reversible isomerization reaction of the hydroxyl group adjacent to the diazo group and the diazo group under different pH regulations. Moreover, the dye has a double color changing structure, which improves the capability of the dye combined with —H/—OH. The pH value range that can cause color changes in the dye is effectively expanded to include weak alkali, weak acid or even neutral conditions.

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Patent Owner(s)

Patent OwnerAddress
NANTONG UNIVERSITYNANTONG UNIVERSITY TECHNOLOGY TRANSFER RESEARCH INSTITUTE BUILDING 1 NO 79 YONGFU ROAD CHONGCHUAN DISTRICT NANTONG CITY JIANGSU PROVINCE 226006 NANTONG CITY JIANGSU PROVINCE 226006

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ding, Ting Nantong, CN 14 43
Li, Min Nantong, CN 751 7676
Li, Shiyu Nantong, CN 24 45
Ma, Wujun Nantong, CN 1 0
Mao, Lifen Nantong, CN 1 0
Qu, Wenlin Nantong, CN 2 0
Zhou, Jialiang Nantong, CN 1 0

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