Coating mixture containing diisocyanate modified polyester and styrene

Claim 1

A LIQUID, COLD-CURING, COATING MATERIAL WHICH IS THE MIXTURE CONSISTING ESSENTIALLY OF (A) THE REACTION PRODUCT OF THE POLYESTER OF (1) A DIHYDRIC ALCOHOL OF THE CLASS CONSISTING OF ETHYLENE GLYCOL, DIETHYLENE GLYCOL, PROPYLENE GLYCOL, DIPROPYLENE GLYCOL, TRIMETHYLENE GLYCOL, AND (2) A PAIR OF DICARBOXYLIC ACIDS, ONE OF WHICH IS SELECTED FROM THE CLASS CONSISTING OF MALEIC ACID, FUMARIC ACID AND ITACONIC ACID, AND THE OTHER OF WHICH IS SELECTED FROM THE CLASS CONSISTING OF PHTHALIC ACID, TEREPHTHALIC ACID, ISOPHTHALIC ACID, TETRACHLOROPHTHALIC ACID, SUCCINIC ACID, ADIPIC ACID, SEBACIC ACID AND AZELAIC ACID, THE ACID OF THE LATTER CLASS BEING PRESENT IN AN AMOUNT OF ABOUT 0.25 TO ABOUT 6 MOLES PER MOLE OF THE ACID OF THE FIRST-MENTIONED CLASS, THE DIHYDRIC ALCOHOL BEING PRESENT IN AN AMOUNT OF ABOUT 2 TO ABOUT 40 PERCENT EXCESS OF STOICHIOMETRIC RATIO WITH RESPECT TO THE SUM OF THE DICARBOXYLIC ACIDS, THE POLYESTER BEING OF AN ACID VALUE OF ABOUT 0 TO ABOUT 60 AND A HYDROXYL VALUE OF ABOUT 25 TO 600, AND (B) AN ORGANIC POLYISOCYANATE SELECTED FROM THE CLASS CONSISTING OF TOLUENE DIISOCYANATE AND THE PREPOLYMER THEREOF WITH HEXANETRIOL, THE ORGANIC POLYISOCYANATE BEING EMPLOYED IN AN AMOUNT OF ABOUT 1 MOLE PER EQUIVALENT WEIGHT OF THE POLYESTER, AND (C) STYRENE, THE LATTER BEING PRESENT IN AN AMOUNT OF ABOUT 10 TO ABOUT 40 PERCENT BY WEIGHT BASED UPON THE MIXTURE, THE POLYESTER AND THE POLYISOCYANATE BEING REACTED BEFORE THE ADDITION OF THE STYRENE.