Aqueous solutions of polyester resins prepared by reaction of a polyhydric alcohol, a partial allyl ether of pentaerythritol, and an unsaturated dicarboxylic acid

Claim 1

A COMPOSITION SUITABLE FOR COATING AND IMPREGNATING APPLICATIONS COMPRISING AN AQUEOUS SOLUTION OF A HEATCONVERTIBLE ESTERIFICATION PRODUCT OF INGREDIENTS CONSISTING ESSENTIALLY OF A POLYHYDRIC ALCOHOL, A PARTIAL ALLYL ETHER OF PENTAERYTHRITOL, AND AN UNSATURATED ORGANIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF MALEIC ACID, MALEIC ANHYDRIDE, AND FUMARIC ACID, SAID POLYHDRIC ALCOHOL BEING SELECTED FROM THE CLASS CONSISTING OF POLYHYDRIC ALCOHOLS OF FROM 2 TO 6 HYDROXYL GROUPS PER MOLECULE AND MIXTURES THEREOF, SAID POLYHYDRIC ALCOHOL CONTAINING NO FUNCTIONAL GROUPS OTHER THAN HYDROXYL GROUPS AND CONTAINING NO OXYGEN EXCEPT IN THE FORM OF HYDROXYL GROUPS AND HAVING AN OH/C NUMERICAL RATIO OF FROM 0.6 TO 1.0 SAID INGREDIENTS PROVIDING FROM 1 TO 5 ACOLHOLIC HYDROXYL GROUPS FOR EACH ACIDIC HYDROGEN, SAID PARTIAL ALLYL ETHER OF PENTAERYTHRITOL PROVIDING FROM ABOUT 1 TO 20% OF THE TOTAL ALCOHOLIC HYDROXYL GROUPS AND SAID REACTION PRODUCT HAVING AN ACID NUMBER BELOW 150 AND BEING DILUTABLE WITH WATER TO A SOLIDS CONCENTRATION AT LEAST AS LOW AS ABOUT 50%.