Citation: YIN Zhigang, LIU Zhenzhen, QIAN Hengyu, WANG Zaifeng, ZHAO Xile, PENG Lifang. Synthesis of a Polymerizable Dye Monomer and Its Application in Dyeing Polyurethane Leather[J]. Chinese Journal of Applied Chemistry, ;2017, 34(6): 649-655. doi: 10.11944/j.issn.1000-0518.2017.06.160394 shu

Synthesis of a Polymerizable Dye Monomer and Its Application in Dyeing Polyurethane Leather

School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China

Corresponding author: YIN Zhigang, yinck@zzuli.edu.cn
Received Date: 28 September 2016
Revised Date: 21 December 2016
Accepted Date: 12 February 2017

Fund Project: Zhengzhou University of Light Industry, The Fourth Batch of College Students Innovative Experimental Project funds 2015005National Undergraduate Innovation and Entrepreneurship Training Program 2015005National Undergraduate Innovation and Entrepreneurship Training Program 201410462028

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In order to solve poor color fastness and serious color transfer of the traditional color polyurethane leather because of weak interaction(intermolecular force) between polyurethane and color base. A kind of reactive color diol was synthesized as follows:p-aminoacetanilide with a yield of 85% was prepared by acylation of p-phenylenediamine with acetic anhydride in tetrahydrofuran at 0~5℃ for 15 h, during which the molar ratio of p-phenylenediamine to acetic anhydride was 1.00:0.95. Then its diazonium salt was coupled with an excess molar fraction of 5% N-phenyl-diethanolamine to obtain 4-acetylamino-4'-N, N-dihydroxyethylamino azobenzene with yield of 82%. The reactive color diol was mixed with polyester or polyether diol in different proportions, followed by prepolymering, chain extension with diisocyanate to form polyurethane resin color paste whose crack-growth rate, relative breaking strength, and color transfer are 443%, 125.5 g and 21.4 μg, respectively, when spreaded into a film. And those of the similar film obtained from import diol are 442.2%, 125.3 g and 29.2 μg, respectively, indicating that the synthetic color diol is superior to the imported product.
- p-phenylenediamine,
- acetylation,
- diazo coupling reaction,
- azo-compound,
- red polyurethane,
- color transfer
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