COPOLYMERISATES BASED ON DIKETENE, ETHYLENICALLY UNSATURATED DICARBONIC ACIDS OR. DICARBONIC ACID DERIVATIVES AND ETHYLENICALLY UNSATURATED HYDROCARBONS

摘要

PCT No. PCT/EP95/00904 Sec. 371 Date Sep. 24, 1996 Sec. 102(e) Date Sep. 24, 1996 PCT Filed Mar. 11, 1995 PCT Pub. No. WO95/25755 PCT Pub. Date Sep. 28, 1995Copolymers comprise a) from 1 to 65 mol % of at least one diketene of the general formula I e another, are each hydrogen or C1-C30-alkyl, b) from 30 to 70 mol % of at least one ethylenically unsaturated dicarboxylic acid or one dicarboxylic acid derivative, c) from 0.5 to 60 mol % of at least one ethylenically unsaturated hydrocarbon and d) up to 20 mol % of at least one further ethylenically unsaturated monomer, modified copolymers are obtainable by reacting these copolymers with NH-, SH- and/or OH-functional compounds, and the unmodified or modified copolymers are used as additives for mineral oil middle distillates.