The fixation of acid dyes on velour was studied according to the basic principle of sol-gel.
应用溶胶—凝胶法的基本原理，进行了丝绒在酸性染料染色中的固色研究。
The degradation ration of Direct Fast Scarlet 4bs and Basic Green are up to about 90%, indicating that the sample on the photocatalytic degradation of dyes has a broad spectrum.
其中对直接耐酸大红4bs和碱性绿的降解率最高约达90%，表明样品对染料的光催化降解作用具有一定的有广谱性。
The company products include mainly about direct dyes, acid dyes, basic dyes, sulphur dyes and special dyes used in leather and paper and so on, altogether more than sixty kinds of products.
公司产品主要有直接染料、酸性染料、碱性染料、硫化染料、皮毛(革)专用染料、造纸专用染料及颜料等，共计六十多个品种。
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