Process for the solid state polymerization of branched poly(alky

Details Process for the solid state polymerization of branched poly(alky Process for the solid state polymerization of branched poly(alky

1977-01-04

1979-04-03

Schain, Howard E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C08L 6702, C08L 6900

Patent

active

041477383

ABSTRACT:
An improved process for the solid state polymerization of branched copoly(alkylene terephthalates) comprises carrying out the polymerization of the branched copolyester in intimate admixture with a small amount of an aromatic (poly-) or (copoly-)carbonate resin in an inert atmosphere. The aromatic (poly-) or (copoly-)carbonate resin accelerates the achievement of high melt viscosity.

REFERENCES:
patent: 3218372 (1965-11-01), Okamura et al.
patent: 3692744 (1972-09-01), Rich et al.
patent: 3752866 (1973-08-01), Doerr
patent: 3915926 (1975-10-01), Wambach
patent: 3953404 (1976-04-01), Borman
patent: 3960817 (1976-06-01), Morawetz et al.
patent: 3998908 (1976-12-01), Buxbaum
patent: 4069278 (1978-01-01), Borman et al.

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