Emulsifiable composition of polyurethanes with metal-salt driers, anionic emulsifiers, and pigments

Claim 1

A PIGMENTED EMULSIFIABLE COATING COMPOSITION WHICH IS PARTICULARLY ADAPTED FOR USE AS A PRIMER ON BARE AND COATED WOOD, SAID COMPOSITION BEING THINNABLE WITH AN AQUEOUS PHASE TO FORM A STABLE ALKALINE EMULSION HAVING A CONTINUOUS AQUEOUS PHASE AND HAVING A DISCONTINUOUS, DISPERSED FILM-FORMING PHASE, SAID COMPOSITION BEING COMPOSED ESSENTIALLY OF (A) A FILM-FORMING COMPONENT IN WHICH THE PRINCIPAL FILM-FORMING MATERIAL IS A WATER-INSOLUBLE URETHANE WHICH IS SUBSTANTIALLY FREE OF UNREACTED -NCO GROUPS AND IS THE REACTION PRODUCT OF (A) PARTIAL CARBOXYLIC ACID ESTERS OF POLYHYDRIC ALCOHOLS, SAID PARTIAL ESTERS HAVING UNESTERIFIED HYDROXYL GROUPS OF SAID ALCOHOLS AVAILABLE FOR SUBSEQUENT REACTION WITH -NCO GROUPS OF POLYISOCYANATES, AND (B) POLYISOCYANATE COMPOUNDS HAVING AN AVERAGE OF ABOUT TWO -NCO GROUPS PER MOLECULE AND PROPORTIONED IN RESPECT TO SAID PARTIAL ESTERS SO AS TO PROVIDE FROM ABOUT .50 TO 1 -NCO GROUP PER ESTERIFIABLE HYDROXYL GROUP IN SAID PARTIAL ESTERS, (B) FINELY-DIVIDED INORGANIC SOLID MATERIAL SELECTED FROM THE GROUP CONSISTING OF PIGMENTS AND MIXTURES OF PIGMENTS WITH UP TO 50% BY WEIGHT OF FILLERS, EXTENDERS AND MIXTURES OF THE LATTER, SAID FINELY-DIVIDED MATERIAL BEING PRESENT IN AMOUNTS YIELDING A PIGMENT VOLUME CONCENTRATION BETWEEN ABOUT 20% TO 50%; (C) 0.5%-2.0% BY WEIGHT BASED ON THE FILM-FORMING SOLIDS OF SAID FILM-FORMING COMPONENT, OF OIL-SOLUBLE POLYVALENT METAL SALT TYPE DRIERS; AND (D) AN EMULSIFIER COMPONENT HAVING AN HLB VALUE BETWEEN ABOUT 11 AND 15 AND CONSISTING ESSENTIALLY OF SURFACTANTS SELECTED FROM THE CLASS CONSISTING OF ISOPROPYL AMINE DODECYL BENZENE SULFONATE, AND MIXTURES THEREOF WITH SODIUM LAURYL SULFATE, SAID EMULSIFIER COMPONENT BEING DISPERSED IN SAID COATING COMPOSITION IN AMOUNTS OF ABOUT 5-18% BY WEIGHT SUFFICIENT TO EMULSIFY AND DISPERSE SAID FILM-FORMING PHASE IN SAID AQUEOUS PHASE WHEN THE LATTER CONSISTUTES BETWEEN ABOUT 12.5% AND 50% OF THE TOTAL WEIGHT OF SAID COATING COMPOSITION, THE CARBOXYLIC ACIDS OF SAID PARTIAL ESTERS IN (A) ABOVE BEING SELECTED FROM THE BEING CONSISTING OF (1) DICARBOXYLIC ACIDS AND MIXTURES OF CARBOXYLIC ACIDS HAVING AN AVERAGE OF TWO CARBOXYLS PER MOLECULE, (2) ETHYLENICALLY-UNSATURATED MONOCARBOXYLIC ACIDS AND THEIR MIXTURES WITH SATURATED MONOCARBOXYLIC ACIDS, HAVING AN IODINE VALUE OF AT LEAST 90 AND CORRESPONDING TO THE ACIDS CONTAINED IN TRIGLYCERIDE OILS SELECTED FROM THE CLASS CONSISTING OF DRYING, SEMI-DRYING AND NON-DRYING TRIGLYCERIDE OILS, THEIR CARBON-CARBON ADDUCTS, AND MIXTURES OF THE FOREGOING WITH MINOR AMOUNTS OF SULFONATED TRIGLYCERIDE OILS, (3) ETHYLENICALLYUNSATURATED ACIDS AND THEIR MIXTURES WITH SATURATED ACIDS, HAVING AN IODINE VALUE OF AT LEAST 120 AND CORRESPONDING TO THE ACIDS CONTAINED IN HEAT-BODIED DRYING AND SEMIDRYING TRIGYLCERIDE OILS, (4) MIXTURES OF THE ACIDS IN (2) AND (3) WITH ROSIN ACIDS AND (5) MIXTURES OF THE ACIDS IN (2) AND (3) WITH THE TALL OIL ACIDS.