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Preparing weakly basic aromatic amines azo disperse dye involves preparing and pre-treating dispersion of coupling component, and carrying out coupling reaction. 专利
申请日期: 2016-01-01, 公开日期: 2016-03-09
作者:  JU B TANG B ZHANG S QIU J
收藏  |  浏览/下载:6/0  |  提交时间:2019/12/09
Preparing azo dye involves diazotizing weak alkaline amine in solvent e.g. ethyl acetate, adding naphthalene-sulfonic acid, fluoboric acid, concentrated sulfuric acid and sodium nitrite; and coupling the diazo salt to form disperse dyes. 专利
申请日期: 2013-01-01, 公开日期: 2013-08-28
作者:  MA W TANG B ZHANG S
收藏  |  浏览/下载:7/0  |  提交时间:2019/12/13
Preparing water-soluble azo dye, comprises diazo salt solution to form fog drop, coupling component solution form fog drop, and making diazo salt and fog drop move oppositely to contact sufficiently to form liquid stream. 专利
申请日期: 2012-01-01, 公开日期: 2012-08-01
作者:  LV R TANG B ZHANG S LV W LIANG D
收藏  |  浏览/下载:2/0  |  提交时间:2019/12/18
Method for continuously preparing water-soluble azo dye by coupling a nebulizer with a pipeline 专利
公开日期: 2016-07-19
作者:  Zhang SF(张淑芬);  Tang BT(唐炳涛);  Lv RW(吕荣文);  Liang D(梁栋)
收藏  |  浏览/下载:0/0  |  提交时间:2020/01/06


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