Application of microencapsulated organic pigment to pigment printing

A series of microencapsulated organic pigment prepared by in-situ miniemulsion polymerization were applied to pigment printing of cotton fabrics.The effects of color paste forming,shell material of microcapsules and printing technology on the printed fabric were investigated.It was found that,compared with the traditional printed fabric,the K /S value,handle,dry and wet fastness of the microcapsule printed fabric were improved considerably,indicating that encapsulation of dyes enhances the binding of pigment particles with fabric and improves the dispersion of pigment particles on fabric surface.It was also found that both the encapsulating polymer property and baking technology play important roles in improving printing quality due to the segmental mobility and flexibility of encapsulating polymer.The shell material consisting of copolymer of butyl acrylate and fractional rigid monomer exhibited the best printing result,and the appropriate baking temperature and time is 140 ℃ and 5 min.