Preparation of copolymers of ethylene with carboxyl-containing c

Details Preparation of copolymers of ethylene with carboxyl-containing c Preparation of copolymers of ethylene with carboxyl-containing c

1985-02-07

1986-04-01

Ivy, C. Warren

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymerizing in tubular or loop reactor

526 75, 526 79, 526 87, 52631845, 5263186, C08F22002, C08F22004, C08F 200

Patent

active

045799180

ABSTRACT:
Copolymers of ethylene containing not more than 4 moles, based on 100 moles of ethylene, of copolymerized C.sub.3 -C.sub.6 -alkenecarboxylic acids are prepared in a continuously operated tubular polymerization system under high pressures and temperatures in the presence of a polymerization initiator by a process in which a mixture of ethylene, the alkenecarboxylic 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 polymerization 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.

REFERENCES:
patent: 2951061 (1960-08-01), Gomory
patent: 3132120 (1964-05-01), Graham et al.
patent: 3520861 (1970-07-01), Thomson et al.
patent: 3546189 (1970-12-01), Ratzsch
patent: 3658741 (1972-04-01), Knutson
patent: 3725378 (1973-04-01), Chamberlin
patent: 4248990 (1981-02-01), Pieski
patent: 4252924 (1981-02-01), Chatterjee
patent: 4351931 (1982-09-01), Armitage

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