CS245473B1 - A method for producing modified olefin-containing copolymers comprising a vinyl ester - Google Patents

Abstract

The invention relates to a method for the production of modified copolymers of olefins containing vinyl ester. The modification is carried out by passing the copolymers with alcohol-containing metal alcoholates or solutions of metal alcoholates in the corresponding alcohol, as a result of which it is possible to mention the quality characteristics of the products of a given type. At temperatures of 343 to 493 K, according to the invention, a simultaneous parallel reaction of saltation and alcoholysis occurs, whereby 5 to 98 wt. % of alcohol is removed from the reacting mixture after 15 to 95 » of the reaction duration. According to the method, it is possible to produce fully or partially crosslinked products in which the ester groups are replaced by alcoholysis with hydroxyl groups in the range of 5 to 95 *.

Description

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Severografia, n. P., MOST

Price 2.40 Kčs

Claims (1)

9 2454Ϊ3 PSSDU T T WINE PRODUCTION Method of codified olefin copolymers with vinyl ions, removed from ethylene-vinyl acetate copolymers by reaction of copolymers with metal alcoholates containing alcohol, or metal alcoholate solutions in the corresponding alcohol at melting points 343 to 493 K, partially or wholly obtainable cross-linked products in which the Zaainin ester group is an alcoholysis in the range of 5 to 95 * hydroxyl groups, characterized in that the alcoholysis and silage reactions take place parallel to each other, for a period of 15 to 95% of the reaction time, calculated on the total plastic melt residence time 5 to 98 wt. alcohol from the reaction mixture. Recognized by the invention on the basis of the results of the expertise, carried out by the Office for the Inventory of Apatency, Berlin, DD. AND