Emulsion coating composition containing a synthetic resin, wood flour, and plaster of paris

Claim 1

A PLASTIC COATING COMPOSITION CAPABLE OF KEEPING WITHOUT SETTING IN TIGHTLY SEALED CONTAINERS, SAID COMPOSITION CONSISTING ESSENTIALLY OF FROM 21 TO 10 PARTS BY WEIGHT OF A MIXTURE OF WOOD FLOUR WITH PLASTER OF PARIS, THE RATIO OF WOOD FLOUR TO PLASTER OF PARIS IN SAID MIXTURE RANGING FROM 1:11/2 TO 1:4; A RESIN SOLUTION IMMISCIBLE WITH WATER CONSISTING ESSENTIALLY OF FROM 895 TO 16 PARTS OF A WATER INSOLUBLE THERMOPLASTIC RESIN SELECTED FROM THE AND OF VINYL CHLORIDE, THE COPOLYMERS OF VINYL ACETATE WITH AND OF VINYL CHLORIDE, THE COPOLYMERS OF VINYL ACETATE WITH VINYL CHLORIDE, THE HOMOPOLYMERS OF STYRENE AND A DRYING ACRYLATES, THE HOMOPOLYMERS OF STYRENE, THE COPOLYMERS OF A LOWER ALKYL METHYACRYLATE WITH STYRENE AND A DRYING OIL, AND MIXTURES THEREOF, SAID RESIN BEING DISSOLVED IN FROM 43.5 TO 56 PARTS OF A VOLATILE ORGANIC SOLVENT WHICH IS ELIMINATED ON DRYING OF SAID COMPOSITION; FROM 27 TO 18 PARTS OF WATER; AND AN EFFECTIVE AMOUNT OF AN EMULSIFYING AGENT FOR DISPERSING IN SAID WATER BOTH SAID RESIN SOLUTION AND SAID PLASTER, SAID RESIN SOLUTION THEN COATING SAID PLASTER PARTICLES AND THEREBY SEPARATING SAID PLASTER PARTICLES FROM SAID WATER TO MAKE POSSIBLE THE SAID KEEPING OF SAID COMPOSITION WITHOUT SETTING.