Procedure for grafting in the production line, of acids and carboxylic acid anhydrides with ethylenic unsaturation on homopolymers or copolymers of ethylene and installation for carrying out this procedure.

摘要

(I) TAKES THE (CO) POLYMERIZATION OF ETHYLENE to at least one reaction zone (R) HIGH PRESSURE, A 150-230 (DEGREES) C; (II) the reaction product is directed to an area (S), at an intermediate pressure (P) SEPARATION (CO) polymer melt WITH OR (CO) monomers that do not have reacted, OR the reaction product is headed for a first separation zone (S1), at an intermediate pressure (P1), and then routes the (CO) polymer obtained in (S1) to a second separation zone (S2) at a PRESSURE P2 P1, (iii) routes the (co) polymer to an area (SF), low pressure SEPARATION OF FINAL (CO) pOLYMER the waste gases. Zones of distension (D), (D1) and (D2) are arranged on the path (CO) POLYMER AREAS BETWEEN RESP. (S) Y (SF), (S1) and (S2), Y (S2) Y (SF), being introduced the monomer GRAFT IN THE LINE IN THE JOURNEY OF (CO) polymer, at least one point midway in the area (D) OR AT LEAST IN A ZONE (D1, D2). A graft initiator MAY BE INTRODUCED AT THE SAME TIME LINE FLOW Monomer (S) OF GRAFT, or separately.