Process for preparing polyesters

Details Process for preparing polyesters Process for preparing polyesters

1977-03-15

1978-06-27

Phynes, Lucille M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

560 94, C08G 6318

Patent

active

040974685

ABSTRACT:
In a process for the preparation of high molecular weight linear polyesters of terephthalic acid which comprises partially esterifying terephthalic acid with an alkylene glycol under direct esterification conditions and then further esterifying and polycondensing the partially esterified product, the molecular weight distribution of the polyester is narrowed by correlating the carboxyl conversion with the reacted glycol to terephthalic acid mol ratio in various steps of a multistep process.

REFERENCES:
patent: 3689461 (1972-09-01), Balint et al.
patent: 3697579 (1972-10-01), Balint et al.
patent: 3849379 (1974-11-01), Jeurissen et al.

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