Detergent copolymer

Claim 1

AS A NEW COMPOSITION OF MATTER AN OIL-SOLUBLE COPOLYMER OF A (A) A POLYMERIZABLE OIL-SOLUBILIZING COMPOUND SELECTED FROM THE GROUP CONSISTING OF OLEFINIC HYDROCARBONS, OLEFINIC ETHER CONTAINING A SINGLE OXYGEN ATOM AND HYPROCARBON CARBOXYLIC ACIDS CONTAINING AT MOST TWO CARBOXY GROUPS FULLY ESTERIFIED WITH MONOHYDROXY HYDROCARBONS, SAID COMPOUND HAVING A SINGLE ETHYLENE LINKAGE AND CONTAINING A MONOVALENT HYDROCARBON GROUP OOF FROM 10 TO 2/ ALIPHATIC CARBON ATOMS, (B) AN AMIDE OF AN A,B-ETHYLENICALLY UNSATURATED MONOCARBOXYLIC ACID OF FROM 3 TO 6 CARBON ATOMS WHEREIN THE AMIDE NITROGEN ATOM IS ATTACHED TO A SUBSTITUED BY ALKL GROUP OF 2 TO 7 CARBON ATOMS WHICH IS SIUBSTITUTED BY AT LEAST ONE HYDROXY GROUP, AND (C) A, B-ETHYLENICALLY UNSATURATED MONOCARBOXYLIC ACID OOF FROM 3 TO 6 CARBON ATOMS, SAID COPLYMER HAVING AN APPARENT MOLECULAR WEIGHT OF AT LEAST 2000 AS DETERMINED BY THE LIGHT SCATTER-U, ING METHOD AND A SOLUBILITY IN MINERAL LUBRICATING OIL OF AT LEAST 2% BY WEIGHT, SAID MONOMERS BEING PRESENT IN THE COPOLYMER IN THE RATIO OF FROM ABOUT 3 TO 15 MONOMER UNITS OF THE OIL-SOLUBILIZING MONOMER (A) FOR EACH MONOMER UNIT OF THE AMIDE (B) AND THE ACID (C).