Copolymers for alpha - beta -unsaturated dicarboxylic acid esters wherein said esters are comprised of ethoxylated esters, methods for their production as well as their use as lubricant for the working-up of plastics

摘要

The copolymers of the invention are made from alpha , beta -unsaturated dicarboxylic acid esters and alpha -olefins. The alpha -olefins employed have 8 to 24 C-atoms and the alpha , beta -unsaturated dicarboxylic acid esters are made solely from ethoxylated alcohol with a degree of ethoxylation of 1 to 45. Also disclosed is a process for the production of these copolymers, in which either alpha -olefin having 8-24 C-atoms is copolymerized with alpha - beta -unsaturated dicarboxylic anhydride or alpha - beta -unsaturated dicarboxylic acid at temperatures of 80 DEG -210 DEG C. in the presence of a peroxide catalyst in an inert gas atmosphere, along with esterification with ethoxylated alcohol having a degree of ethoxylation of 1-45 in the mole ratio of 1:1 to 1:2 alpha - beta -unsaturated dicarboxylic acid or anhydride : ethoxylated alcohol, or by copolymerizing alpha -olefins having 8-24 C-atoms and alpha - beta -unsaturated dicarboxylic acid ester having ethoxylated alcohol with a degree of ethoxylation from 1 to 20 as alcohol component at temperatures of 140 DEG -210 DEG C. in the presence of a peroxide catalyst in an inert gas atmosphere. The copolymers are preferably used as lubricant for the shaping treatment of thermoplastic plastics.