| abstract |
This invention is concerned with terpolymers containing, as polymerized units, at least one first monomer selected from vinyl acetate, vinyl ethers and vinyl carbonates, at least one second monomer of an ethylenically unsaturated monocarboxylic acid, and at least one third monomer of an anhydride of a dicarboxylic acid. Partial hydrolysis, saponification, or saponification followed by oxidation of this terpolymer leads to terpolymer derivatives with improved detergent properties and improved biodegradability. |