Process for production of saturated, high-molecular weight polye

Details Process for production of saturated, high-molecular weight polye Process for production of saturated, high-molecular weight polye

1977-03-25

1979-03-06

Lieberman, Allan

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

528274, C08L 3502, C08L 3506, C08L 6706

Patent

active

041430948

ABSTRACT:
A process for the production of pol-(butylene terephthalate) of sufficiently high molecular weight for subsequent extrusion processing without the need of a solid phase post-condensation and at polycondensation pressures greater than now in general use. Polycondensation is carried out in the presence of small amounts of copolymers of an .alpha.-olefin or styrene with free or esterified maleic acid or anhydride.

REFERENCES:
patent: 4025492 (1977-05-01), Binsack et al.
patent: 4031065 (1977-06-01), Cordes et al.
patent: 4049635 (1977-09-01), Cleary
patent: 4056514 (1977-11-01), Strehler et al.
patent: 4080354 (1978-03-01), Kramer

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