Patent ID: 8093179
Filing Date: 2012-01-10
Classification: B41M

Abstract:
1. A composition comprising a colour developer I: , wherein R X is a group of the formula —C(═NH)—, —C(═S)— or —C(═O)—; A is unsubstituted or substituted phenylene, naphthylene or C B is a linking group of formula —O—SO R or C a) 0.1 to 5 dry parts by weight of an anionic dispersant per 100 dry parts of the colour developer I, wherein the anionic dispersant is an ammonium salt of naphthalene sulfonic acid formaldehyde condensate, a carboxylated polymer, a carboxylated acrylic copolymer, or a mixture thereof; and b) 0.01 to 2.0 dry parts per weight of a thickening agent per 100 parts of the colour developer I.