OPTICALLY BRIGHTENED POLYVINYL ACETATE LATEX COATING COMPOSITIONS

摘要

The use of sparingly water-soluble optical brightening agents in coating compositions containing white pigment extender such as clay and polyvinyl acetate latex as sole binding agent enables coatings to be obtained on, e.g., paper of improved whiteness and fastness to light. Preferred optical brightening agents are heterocyclic, especially triazinyl derivatives of pyrene or naphthalene.