metal complex dyes

• Company : WENZHOU MEIERNUO CHEMICAL CO.,LTD
• Region : Zhejiang , China
• Category : Chemicals > Dyestuffs
• Contact Person : Jackie Hu|||Sales man
• Telephone :
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• Website : www.wzmeiernuo.com
• Email : [email protected]
• Instant Messenger : skype:[email protected]
• Update : May/02/2016

• Product Details

  Features of Metal Complex Dyes ?Medium washing fastness. ?Excellent, light-fastness. ?Shows very good level dyeing and penetration characteristics. ?Can cover up for the irregularities in the substrates. Application of Metal Complex Dyes Metal Complex Dyes is using for a variety of applications like wood stains, leather finishing, stationery printing inks, inks, coloring for metals, plastic etc. As this dye is classified into two categories and both have different applications. 1:1 metal complex dyes:- These dyes have good leveling and penetration properties and are particularly suitable for application on carbonized wool. These dyes are applied under a strongly acidic bath at a pH of 1.8 –2.5 with sulfuric acid or at a pH of 3-4 with formic acid, therefore these are not suitable for the blends having cotton component. Glauber salt is used as exhausting agent and organic leveling agents are used to? 1:2 metal complex dyes:- These dyes are subdivided into two subgroups based on the solubilising groups present in the dye molecule, these dyes shows moderate migration properties on nylon but very good overall fastness properties, because metal complex dyes not only attach to nylon with ionic linkages, but also with coordinate bonds. The two subgroups are: ?Weakly polar dyes ?Strongly polar dyes ?Strongly acidic (ranging from 1.8 - 4 for 1:1 metal-complex dyes) ?Moderately acidic neutral (ranging from 4 - 7 for 1:2 metal-complex dyes)

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