Installation for the discontinuous production of polyethylene te

Details Installation for the discontinuous production of polyethylene te Installation for the discontinuous production of polyethylene te

1974-07-03

1977-02-15

Wolk, Morris O.

Chemistry: physical processes

Physical processes

Crystallization

23253A, 137209, 137577, 260 75M, B01J 100, C08G 6300

Patent

active

040080480

ABSTRACT:
An installation for use in the discontinuous production of high molecular weight polyethylene terephthalate according to either a first process wherein the production starts by producing bis(2-hydroxyethyl)-terephthalate by transesterification from dimethylterephthalate and ethylene glycol, or according to a second process starting with the production of a precondensate by reacting terephthalic acid with ethylene glycol. The installation comprises substantially a first and a second reaction vessel and a connection between said vessels, and means whereby the flow of reaction product through said connection can be accurately controlled to permit all or only part of the contents of the first vessel to pass to the second vessel.

REFERENCES:
patent: 1989760 (1935-02-01), Masury
patent: 3003515 (1961-10-01), Moberly
patent: 3054776 (1962-09-01), Higgins
patent: 3255161 (1966-06-01), Cobb, Jr.
patent: 3427287 (1969-02-01), Pengilly
patent: 3596673 (1971-08-01), Laucournet
patent: 3600137 (1971-08-01), Girantet et al.
patent: 3644294 (1972-02-01), Siclari et al.
patent: 3689461 (1972-09-01), Balint et al.
patent: 3718544 (1973-02-01), Sims
patent: 3849379 (1974-11-01), Jeurissen et al.

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