Coating composition comprising a vinyl acetate unsaturated carboxylic acid copolymer and an organic base dissolved in an organic solvent and article therewith

Claim 1

A LIQUID COSTING COMPOSITION WHICH IS A LACQUER CHARACTERIZED IN THAT THE FILM PROVIDED THEREBY UPON EVAPORATION OF THE SOLVENT THEREOF IS INSOLUBLE IN WATER AND AFTER CONTACT WITH WATER IS STRIPPABLE BY MECHANICAL ACTION FROM A SURFACE PROTECTED THEREBY, SAID COMPOSITION COMPRISING, AS THE LACQUER SOLVENT, A VOLATILE ORGANIC SOLVENT CONTAINING LESS THAN 5% WATER, A RESIN DISSOLVED IN SAID SOLVENT AND AN ORGANIC NITROGEN BASE DISSOLVED IN SAID SOLVENT, SAID RESIN BEING A O-POLYMER OF VINYLACETATE AND AN UNSATURATED CARBOXYLIC ACID CONTAINING A TOTAL OF FOUR CARBON ATOMS AND SELECTED FORM THE GROUP CONSISTING OF MALEIC, FUMARIC, CROTONIC, AND ISOCROTOLLIC ACID, AND BEING NON-HYDROLYZABLE IN WATER, SAID RESIN CONTAINING FROM 95% TO 99.5% VINYLACETATE GROUPS AND FFROM 0.5 TO 5% OF THE CARBOXYLIC ACID GROUPS, SAID NITROGEN BASE BEING 0.5 PART TO 10 PARTS BY WEIGHT OF 100 PARTS BY WEIGHT OF SAID CO-POLYMER, SAID ORGANIC NITROGEN BASE BEING SUBSTANTIALLY NON-VOLATILE, AT 20*C. TO 30*C. UNDER NORMAL ATMOSPHERIC PRESSURE OF 760 MILLIMETERS OF MERCURY, AND BEING SOLUBLE IN SAID SOLVENT IN AMOUNT OF AT LEAST 1 PARTS OF NITROGEN BASE IN 100 PARTS OF SOLVENT.