Environmental-protection type CI disperse orange 29 preparation method

Environmental-protection type CI disperse orange 29 preparation method

  • CN 104,629,493 A
  • Filed: 11/12/2013
  • Published: 05/20/2015
  • Est. Priority Date: 11/12/2013
  • Status: Active Application
First Claim
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1. a preparation method for environment-friendly type CI DISPERSE ORANGE 30 200 29, is characterized in that the method comprises:

  • 1., by the dyestuff filter-cakes of undressed CI DISPERSE ORANGE 30 200 29 dispersed with stirring pulp in water, stir with water making beating, after the starchiness that dyestuff filter-cakes becomes superfine in water, then add appropriate water and stir;

    2., at 40-100 DEG C of temperature, use sodium hydroxide and/or sodium carbonate to regulate PH to be greater than 9, then regulate PH to 7-9 with sulfuric acid and/or hydrochloric acid;

    3., then filtering separation, the impurity being Ortho Anisidine by CI DISPERSE ORANGE 30 200 29 and cleavable is separated, and fully washing filter cake is neutral to PH;

    4., be separated CI DISPERSE ORANGE 30 200 29 filter cake of environment-friendly type obtained, through sand milling, toning, the dry dispersed dye commercialization course of processing, namely obtain the dyestuff finished product of the CI DISPERSE ORANGE 30 200 29 of environment-friendly type.

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