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Abstract

Abstract AN AQUEOUS EMULSION COATING COMPOSITION ESPECIALLY USEFUL IN FLOOR POLISHES, COMPRISING A WAXY POLYMER, A HARD POLYMER DERIVED FROM AN ETHYLENICALLY UNSATURATED MONOMER, AN ALKALI SOLUBLE RESIN, EMULSIFIER AND WATER, SAID RESIN AND MIXTURE OF WAXY AND HARD POLYMER BEING PRESENT IN A WEIGHT RATIO FROM ABOUT 10:90 TO ABOUT 70:30, SAID ALKALI SOLUBLE RESIN BEING OF THE FORMULA CH3-CH(-C6H5)-((2,5-DI(O=)TETRAHYDROFURAN-3,4-YLENE)-CH2- CH(-C6H5)-CH(-COOH)-CH(-COOH))N-H H-(CH2-CH(-C6H5)-(2,5-DI(O=)TETRAHYDROFURAN-3,4-YLENE)- CH2-CH(-C6H5)-CH(-COOH)-CH(-COOH))N-H WHEREIN N IS A NUMBER FROM 1 TO 9 AND R IS SELECTED FROM THE GROUP CONSISTING OF ALKYL AND ALKYLENE-OXY-ALKYL, R CONTAINS FROM 1 TO 20 CARBON ATOMS, SAID ALKALI SOLUBLE RESIN BEING PREPARED BY GRADUALLY ADDING A MIXTURE OF FREE RADICAL INITIATOR, STYRENE AND ROH TO A SOLVENT SOLUTION OF MALEIC ANHYDRIDE, IN THE MOLE RATIO OF MALEIC ANHYDRIDE TO STYRENE OF FROM BETWEEN ABOUT ONE TO 0.7 AND ABOUT ONE TO 0.85 AND IN A MOLE RATIO OF MALEIC ANHYDRIDE TO ROH OF FROM BETWEEN ABOUT ONE TO 0.5 AND ABOUT ONE TO ONE, AT AN ELEVATED TEMPERATURE BETWEEN ABOUT 11K AND 180 DEGREES CENTIGRADE UNTIL THE ACID NUMBER OF THE RESIN IS BETWEEN ABOUT 180 AND 340, SAID COATING COMPOSITION HAVING A PH OF AT LEAST 7.

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