Manufacture of polyesters

Details Manufacture of polyesters Manufacture of polyesters

1976-12-20

1978-01-24

Person, Sandra M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 4256, 260873, C08K 517, C08K 518, C08K 556

Patent

active

040703428

ABSTRACT:
In a continuous process for production of polyester polymers, polymer additives are added to the process stream at a point where the polymer is molten by injecting a stable liquid dispersion formed from a liquid polyisobutene and the requisite polymer additives. The process is particularly useful in production of thermally stabilized polyesters wherein a stabilizing amount of a copper complex compound is incorporated therein.

REFERENCES:
patent: 3383353 (1968-05-01), Goto
patent: 3519595 (1970-07-01), Hermann et al.
patent: 3579609 (1971-05-01), Sevenich
patent: 3639335 (1972-02-01), Fujii et al.
patent: 3833542 (1974-09-01), Lazarus et al.
patent: 3839499 (1974-10-01), Jadamus et al.
patent: 3919353 (1975-11-01), Castelnuovo et al.
patent: 3923726 (1975-12-01), Benz

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