foerfarande foer's line ympning av etyleniskt omaettade karboxylsyror samt anhydrider daerav pao etenhomopolymerer eller - sampolymerer samt ing foer genomfoerande av foerfarandet.

摘要

(i) is the (co) polymerization of ethylene in at least one reaction zone (r) under high pressure, at 150 - 320degré c; (ii), it conveys the reaction product in a zone (s), in an intermediate pressure p, the separation of the (co) polymer, in the molten state, with the (co) monomer (s) has not reacted, and it conveys the reaction product in a 1ère separation zone (s1), in an intermediate pressure p1, and then conveys the (co) polymer derived from (s1) in a 2ème separation zone (s2), under a pressure p2 p1; (iii), it conveys the (co) polymer in a zone (sf), under low pressure, of the final separation of the (co) polymer of the residual gases. The expansion zones (d), (d1) and (d2) are arranged on the path of the (co) polymer between the zones (. (S) and (sf), (s1) and (s2) and (s2) and (sf), or the grafting monomers is introduced into the line, on the path of the (co) polymer, in at least one point located at the level of the zone (d) or of at least one zone (d1, d2). A grafting initiator may be introduced into the line at the same time as the flow of the monomer (s) of grafting, or separately.