1 results about "Pigment synthesis" patented technology

The application discloses a kind of acid and alkali resistant pigment red 57:1 for ink and a preparation method thereof, and belongs to the technical field of pigment synthesis, which is composed of 5~10 parts of block polymer and 70~100 parts of pigment red 57:1 by weight; The block polymer is a block polymer with a main chain containing a vinyl structural unit, a side chain with a carboxyl group / amino group and a phenyl group, and a phenyl group at the end; The acid and alkali resistant pigment red 57:1 for ink prepared by the application, while maintaining the original bright color of the pigment and the advantages of high color strength, by introducing a hydrophilic core rich in carboxyl and amino groups, and matching a hydrophobic shell, the stability of the pigment in strong acid and strong alkali environment is improved, and has a broader application prospect.