Oil soluble phenolic resins and varnish compositions prepared therefrom

Claim 1

A HEAT REACTIVE VARNISH COMPOSITION COMPRISING AS ITS ESSENTIAL INGREDIENTS FROM 75 TO 150 PARTS BY WEIGHT OF A GLYCERIDE OF AN UNSATURATED ACID HAVING AT LEAST TWO ETHYLENICALLY UNSATURATED GROUPS, AND 100 PARTS BY WEIGHT OF A PARTIALLY REACTED, THERMOSETTABLE, PHENOLIC RESIN DERIVED BY REACTING ONE MOLE OF A MIXTURE OF FROM 90 TO 80 MOLE PERCENT OF PARATERTIARYBUTYL PHENOL AND FROM 10 TO 20 MOLE PERCENT OF DIPHENYLOLPROPANE WITH FROM 1.5 TO 2 MOLES OF AN ALDEHYDE SELECTED FROM THE AQUEOUS FORMALDEHYDE AND POLYMERS OF FORMALDEHYDE AT TEMPERATURES OF BETWEEN 70* C. AND REFLUX, IN THE PRESENCE OF FROM 0.2% TO 5% BASED ON THE WEIGHT OF THE PHENOLS, OF AN ALKALI METAL HYDROXIDE CATALYST, THE REACTION TIME VARYING FROM 3 HOURS WITH THE MINIMUM AMOUNT OF CATALYST AND THE LOWEST TEMPERATURES TO 1 HOUR USING REFLUX AND MORE THAN 1/2% BY WEIGHT OF CATALYST, THE AQUEOUS REACTION PRODUCT THEN BEING NEUTRALIZED AND RENDERED ACIDIC WITH AN ACID TO A PH OF BETWEEN 4 AND 6.5, REMOVING THE WATER FROM THE ACIDIFIED REACTION PRODUCT BY EVACUATION, AND HEATING THE RESINOUS RESIDUE UNTIL A RESINOUS PRODUCT HAVING A BALL AND RING SOFTENING POINT OF BETWEEN 75* C. AND 105* C. IS ATTAINED, THE GLYCERIDE AND THE PHENOLIC RESIN HAVING BEEN HEAT BODIED TO PROVIDE A RELATIVELY HOMOGENEOUS COMPOSITION.