| 摘要 |
<p>A method for the production of certain ethylene copolymers which comprises saponifying a granular feedstock which includes a polymer of at least 50% ethylene, 2 to 50% of certain esters of C3 to C12 alkene carboxylic acids, 0 to 30% vinyl esters of certain aliphatic carboxylic acids having 1 to 6 carbon atoms, and up to 3% of C3 to C12 alkene carboxylic acids. In particular, the improvement comprises maintaining the feedstock at a particle size range of 0.1 to 8.0 mm, and suspending it in 1 - 10 parts of a ketone to 1 part of the feedstock, the ketone being of the formula < IMG > wherein R and R' are individually an alkyl radical having 1 to 6 carbon atoms, and carrying out the saponification at a temperature of 40.degree. to 75.degree.C in the presence of at least one alkaline saponifying agent. The resulting compounds are useful as adhesives and coating materials. This Application claims the benefit of the priority of German Application P 30 46 144.0, filed December 6, 1980.</p> |
