首页>
外国专利>
PROCESS FOR DYING AND STAMPING WITH SULFUR DYES, PROCESS FOR OBTAINING SULFUR DYES PREPARATIONS, STABLE, READY FOR DYEING, AND PREPARED SO OBTAINED
PROCESS FOR DYING AND STAMPING WITH SULFUR DYES, PROCESS FOR OBTAINING SULFUR DYES PREPARATIONS, STABLE, READY FOR DYEING, AND PREPARED SO OBTAINED
展开▼
机译：含硫染料的染色和印染工艺，获得硫染料的制备工艺，稳定的，准备染色的工艺以及如此制备的方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
Dyeing and printing with sulfur dyestuffs involves dissolving the dyestuff by reduction. The dissolved reduced dyestuff is applied to the material to be dyed or printed and the dyestuff is reconverted into in soluble dyestuff by oxidation. The present invention improves the prior art by using as the dyestuff reducing agent a compound of the formula IMAGE or an alkali metal salt thereof, wherein R is -H or -OH and R' is -H, -CH3 or -CH2OH.
展开▼
