Detergent copolymers

Claim 1

AN OIL-SOLUBLE COPOLYMER OF MONOMERS SELECTED FROM AT LEAST EACH OF THE FIRST TWO CLASSES OF THE CLASSES CONSISTING OF (1) POLYMERIZABLE OIL-SOLUBIZIZING COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF OLEFINIC HYDROCARBONS, OLEFINIC ETHERS CONTAINING A SINGLE OXYGEN ATOM AND HYDROCARBON CARBOXYLIC AICDS CONTAINING AT MOST TWO CARBOSY GROUPS FULLY ESTERIFIED WITH MONOHYDROXY HYDROCARBONS, SAID COMPOUNDS HAVING A SINGLE ETHYLENIC LINKAGE AND CONTAINING A MONOVALENT HYDROCARBON GROUP OF FROM 8 TO 30 ALIPHATIC CARBON ATOMS, (2) AT LEAST ONE ESTER SELECTED FROM THE GROUP CONSISTING OF MONOESTERS AND DIESTERS OF A,B-ETHYLENICALLY UNSATURATED A,B DICARBOXYLIC ACIDS OF FROM 1 TO 12 CARBON ATOMS EACH, WHEREIN THE CARBOXYL GROUPS OF SAID ACIDS ARE MONOESTERLINKED TO A MEMBER OF THE GROUP CONSISTING OF POLY-1,2ALKYLENE GLYCOLS HAVING A MOLECULAR WEIGHT BETWEEN ABOUT 400 AND 10,000 AND FROM 2 TO 7 CARBON ATOMS IN EACH ALKYLENE GROUP AND MONOALKYL ETHERS THEREOF AND (3) ACIDIC COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF A,B-ETHYLENICALLY UNSATURATED MONOCARBOXYLIC ACIDS OF FROM 3 TO 15 CARBON ATOMS EACH, A-B-ETHYLENICALLY UNSATURATED A,B DICARBOXYLIC ACIDS OF FROM 4 TO 12 CARBON ATOMS EACH, ANHYDRIDES AND MONOESTERS OF SAID DICARBOXYLIC ACIDS IN WHICH THE ALCOHOL MOIETY OF THE ESTER GROUP IS AN ALIPHATIC HYDROCARBON CONTAINING FROM 8 TO 30 CARBON ATOMS, THERE BEING PRESENT FROM 1 TO 20 MONOMER UNITS OF THE OIL-SOLUBILIZING COMPONENT (1) FOR EACH MONOMER UNIT OF COMPONENTS (2) AND (3), SAID COPOLYMER HAVING AN APPARENT MOLECULAR WEIGHT OF AT LEAST 2,000 AS DETERMINED BY THE LIGHT SCATTERING METHOD AND A SOLUBILITY IN LUBRICATING OIL OF AT LEAST 0.5% BY WEIGHT.