Ultraviolet absorbing watercolor paint compositions

Claim 1

A WATER-BASED PAINT CONTAINING PIGMENT AND WATERSOLUBLE ORGANIC FILM-FORMING INGREDIENTS AND HAVING HOMOGENEOUSLY INCORPORATED THEREIN MATERIALS PROVIDING ULTRAVIOLET ABSORPTION PROPERTIES TO SAID PAINT, SAID MATERIALS CONSISTING ESSENTIALLY OF A SUBSTANCE CAPABLE OF ABSORBING ULTRAVIOLET LIGHT OF WAVE LENGTHS BETWEEN ABOUT 340 AND 410 MILLIMICRONS AND AN ORGANIC EXUDATION AGENT IN WHICH SAID ULTRAVIOLET-ABSORBING SUBSTANCE IS SOLUBLE, SAID EXUDATION AGENT BEING EXUDABLE FROM THE PAINT FILM AFTER THE PAINT HAS BEEN APPLIED TO THEREBY CARRY THE ULTRAVIOLET-ABSORBING SUBSTANCE TO THE SURFACE OF SAID PAINT FILM, SAID ULTRAVIOLET-ABSORBING SUBSTANCE AND EXUDATION AGENT CONSTITUTING LESS THAN ONE-HALF OF THE NONAQUEOUS CONSTITUENTS OF THE PAINT BUT BEING PRESENT IN SAID PAINT IN SUFFICIENT QUANTITY TO CAUSE SAID PAINT WHEN APPLIED TO ABSORB A GREATER PROPORTION OF ULTRAVIOLET LIGHT IN SAID 340 TO 410 MILLIMICRON WAVE-LENGTH RANGE THAN IS REFLECTED IN SAID RANGE, AND SAID EXUDATION AGENT BEING PRESENT IN SUFFICIENT QUANTITY TO DISSOLVE SAID ULTRAVIOLET-ABSORBING SUBSTANCE.