Process for the condensation of poly(alkylene terephthalates)

Details Process for the condensation of poly(alkylene terephthalates) Process for the condensation of poly(alkylene terephthalates)

1983-03-31

1984-02-28

Phynes, Lucille M.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

528272, 528286, 528287, 5283085, 528480, 528483, 528487, 528490, C08G 6326

Patent

active

044342764

ABSTRACT:
A process for the post condensation of poly(alkylene terephthalate) in the solid phase is carried out in the presence of esters of phosphorous acid at 25.degree.-65.degree. C. below the melting point of the poly(alkylene terephthalate) while passing an inert gas stream through the reaction mixture.

REFERENCES:
patent: 4328059 (1982-05-01), Horlbeck et al.
patent: 4360661 (1982-11-01), Horlbeck et al.
patent: 4387213 (1983-06-01), Horlbeck et al.

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