Copolymers of ethylene with polyalkylene glycol (meth)acrylates
AssigneeBASF SE
InventorsWalter Ziegler, Horst Koch
Life of this patent
Estimating the term…
Abstract
Novel copolymers of ethylene with .omega.-alkyl-, -cycloalkyl- or -aryl-poly-(alkylene oxide)-.alpha.-yl (meth)acrylates and, if required, .alpha.,.beta.-ethylenically unsaturated carboxylic acids, carboxamides or carboxylic anhydrides and, if desired, further monomers which are copolymerizable with ethylene, selected from the classes consisting of the vinyl esters, vinyl ethers and/or (meth)acrylates.
Claims6
A terpolymer of ethylene prepared by a high pressure polymerization process, having a melt flow index of from 50 to 500 g/10 min and a Shore A hardness according to German Industrial Standard (DIN) 53,505 of 20 and which is soluble or swellable in an aqueous medium, comprising
- a) from 40 to 60 parts by weight of ethylene,
- b) from 2 to 40 parts by weight of a (meth)acrylate,
- c) from 1 to 40 parts by weight of an .alpha.-.beta.-ethylenically unsaturated carboxylic acid, a carboxylic anhydride or a carboxamide and
- wherein the (meth)acrylate (b) is an .omega.-alkyl-, -cyclo- alkyl- or -aryl-poly-(alkylene oxide-.alpha.-yl (meth)-acrylate of the formula (I) ##STR6## where R.sup.1 is H or CH.sub.3, R.sup.2 is alkyl, cycloalkyl or aryl and m and n are each equal to or greater than 0, with the proviso that the sum of m and n is always equal to or greater than 2.
Dependencies are inferred from the claim text.