Weakly Acidic Dye Series Manufacturers

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We mainly produce acid dyes and dye intermediates, and we are a professional manufacturer of anthraquinone acid dyes in China.

Custom Weakly Acidic Dye Series

Weak acid dyes can be produced by increasing molecular weight, introducing long carbon chains  or aromatic sulfone groups in strong acid dyes. The proportion of sulfonic acid groups in the molecules of weakly acidic dyes is relatively small, and the molecular structure is relatively complex. It basically exists in a colloidal dispersion state in a solution at room temperature, has hydrophilicity, and has a moderate solubility and aggregation degree in aqueous solution. The dye migration and level dyeing properties are slightly worse, but the wet fastness is better. Weak acid dyes can dye wool in weakly acidic medium (PH=4~5), with a high affinity for wool fiber, no damage to wool. The fastness is improved and the shade is darker, but the level dyeing property is not good. The dyeing performance is between the levelling acid dyes and the milling acid dyes.

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Hangzhou Tianya Industry Co., Ltd.

Hangzhou Tianya Industry Co., Ltd. is a China Weakly Acidic Dye Series Manufacturers and Custom Weakly Acidic Dye Series Suppliers. We are an enterprise dedicated to the research, development, production, and sale of fine chemical products, mainly specializing in the manufacture of acid dyes and dye intermediates. As one of the major manufacturers of acidic anthraquinone dyes in China, Tianya has always adhered to the concept of innovative development, constantly innovating and paying attention to standardized production and quality control of products. Our products are mainly exported to Japan, Spain, Italy, the United Kingdom, South Korea, the Netherlands, Thailand, Mexico, and dozens of other countries. In addition, Tianya has established cooperative relations with internationally renowned chemical companies, including the top 100 chemical companies in the world. Tianya has become an important supplier to these companies in the field of acid dyes in China.


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