Mineral oil compositions containing esterified copolymers of alpha,-beta-unsaturated polybasic acids with allyl and vinyl ethers

Claim 1

A MINERAL LUBRICATING OIL CONTAINING A MINOR PROPERTION, SUFFICIENT TO LOWER THE POUR POINT OF SAID OIL, OF AN ESTERIFIED COPOLYMER FORMED BY COPOLYMERIZING (1) AN ETHER SELECTED FROM THE GROUP CONSISTING OF ALKYL VINYL ETHERS AND ALKYL ALLYL ETHERS, THE ALKYL PORTION OF SAID ALKYL VINYL ETHER BEING AN ALKYL RADICAL CONTAINING UP TO AND INCLUDING FOUR CARBON ATOMS AND THE ALKYL PORTION OF SAID ALKYL ALLYL ETHER BEING A PRIMARY, NORMAL, ALKYL RADICAL HAVING FROM 1 TO ABOUT 18 CARBON ATOMS, WITH (2) AN ALPHA, BETA-UNSATURATED POLYCRBOXYLIC ACID MATERIAL SELECTED FROM THE GROUP CONSISTING OF MALEC ACID, FUMARIC ACID, ITACONIC ACID, GLUTACONIC ACID, MESACONIC ACID, CITRACONIC ACID, ACONITIC ACID AND THE ANHYDRIDES OF SAID ACIDS, AND ESTERIFYING THE COPOLYMER THUS OBTAINED WITH (3) AN ALCOHOL MATERIAL, SAID ALCOHOL MATERIAL BEING SELECTED FROM THE GROUP CONSISTING OF TETRADECYL ALCOHOL AND A MIXTURE OF PRIMARY, NORMAL, SATURATED ALCOHOLS HAVING AN AVERAGE OF ABOUT 14 CARBON ATOMS PER MOLECULE WHEN THE ETHER UTILIZED IN PREPARING THE COPOLYMER IS AN ALKYL VINYL ETHER AND BEING A PRIMARY, NORMAL, SATURATED ALCHOL HAVING FROM 1 TO ABOUT 18 CARBON ATOMS WHEN THE ETHER UTILIZED IN PREPARING THE COPOLYMER IS AN ALKYL ALLYL ETHER.