IMPROVEMENT IN STABILITY OF CELLULOSE ACETATE PROPIONATE BASED INK SYSTEMS CONTAINING POLYETHYLENEIMINE AS AN ADHESION PROMOTER

摘要

The present invention relates to stabilized cellulose acetate propionate based ink systems which contain polyethyleneimine as an adhesion promoter. The ink system is stabilized by the addition of acetoacetyl ortho-toluidine in a preferred ratio of 2:1 to the polyethyleneimine.