Radiation-curable coatings containing reactive pigment dispersants
First Claim
1. A liquid coating composition adapted to be cured by exposure to ionizing radiation comprising, a liquid vehicle of coating viscosity having an ethylenically unsaturated portion comprising one or more polyethylenically unsaturated materials adapted to cure on radiation exposure, pigment dispersed in said vehicle, and an ethylenically unsaturated radiation-curable dispersant containing a carboxy group for wetting said pigment and assisting in the stable dispersion of said pigment in said vehicle, said dispersant being a half amide or half ester of an ethylenically unsaturated polycarboxylic acid anhydride with an organic compound having a molecular weight of from 100 to 4000 and which contains a single hydroxy group or a single amino group as the sole reactive group thereof.
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Accused Products
Abstract
Liquid coating compositions adapted to be cured by exposure to penetrating radiation are disclosed in which a liquid vehicle of coating viscosity having an ethylenically unsaturated portion comprising one or more polyethylenically unsaturated materials adapted to cure on radiation exposure, pigment dispersed in the vehicle, and an ethylenically unsaturated radiation-curable dispersant containing a carboxyl group for wetting the pigment and assisting in the stable dipsersion of the pigment in the vehicle. This dispersant is a half amide or half ester of an ethylenically unsaturated polycarboxylic acid anhydride, such as maleic anhydride, with an organic compound having a molecular weight of from 100 to 4000 and which contains a single hydroxy group or a single amino group as the sole reactive group thereof.
34 Citations
12 Claims
- 1. A liquid coating composition adapted to be cured by exposure to ionizing radiation comprising, a liquid vehicle of coating viscosity having an ethylenically unsaturated portion comprising one or more polyethylenically unsaturated materials adapted to cure on radiation exposure, pigment dispersed in said vehicle, and an ethylenically unsaturated radiation-curable dispersant containing a carboxy group for wetting said pigment and assisting in the stable dispersion of said pigment in said vehicle, said dispersant being a half amide or half ester of an ethylenically unsaturated polycarboxylic acid anhydride with an organic compound having a molecular weight of from 100 to 4000 and which contains a single hydroxy group or a single amino group as the sole reactive group thereof.
Specification