Preparation method of self-adhesive organic pigment microcapsules for pigment printing
An organic pigment and paint printing technology, applied in the directions of organic dyes, dyeing, textiles and papermaking, etc., can solve the problems such as the unpublished problem of organic pigment microcapsules, improve color fastness and hand feel, improve dispersibility and dispersion stability The effect of improving the stability and dispersibility
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[0029] Examples 1-9
[0030] According to the feeding ratio shown in Table 1, step (1): add organic pigment phthalocyanine green to the reaction mixed monomer A with the oil-soluble initiator dibenzoyl peroxide dissolved in it, stir it evenly and transfer it to the dispersant In the reactor of the aqueous phase of magnesium hydroxide, stir at high speed to form a suspension dispersion. 2 After a period of polymerization reaction at a certain temperature in an atmosphere, a suspension dispersion of composite microspheres is formed.
[0031] Step (2): Add reactive monomer B dropwise to the dispersion of composite microspheres obtained in step (1), 2 The polymerization reaction is carried out for a period of time at a certain temperature in the atmosphere, and the reaction is terminated. A suspension dispersion of organic pigment phthalocyanine green microcapsules is obtained.
[0032] The suspension dispersion obtained in step (2) is cooled, acid washed, washed with water, filtered,...
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