Preparation of copolymers of ethylene with carboxyl-...

Details Preparation of copolymers of ethylene with carboxyl-... Preparation of copolymers of ethylene with carboxyl-...

C - Chemistry, Metallurgy

08

F

402/296, 402/404

C08F 210/02 (2006.01) C08F 220/04 (2006.01) C08F 222/02 (2006.01)

Patent

CA 1250998

- 11 - Abstract of the Disclosure: Copolymers of ethylene con- taining not more than 4 moles, based on 100 moles of ethylene, of copolymerized C3-C6-alkenecarboxylic acids are prepared in a continuously operated tubular polymerization system under high pressures and tempera- tures in the presence of a polymerization initiator by a process in which a mixture of ethylene, the alkene- carboxylic acid, if required a further monomer which is copolymerizable with ethylene, an initiator and, if required, a regulator is fed into the polymerization system at its entrance and at the same time at a second point downstream of the entrance, along the polymeriza- tion system, where the reaction temperature has exceeded a maximum, the amount of alkenecarboxylic acid at the entrance of the polymerization system being not more than 0.3, preferably less than 0.28, mole, based on 100 moles of ethylene, and the remainder being metered in at the second feed point.

473589

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