Polyester compositions and methods of stabilizing same

Details Polyester compositions and methods of stabilizing same Polyester compositions and methods of stabilizing same

1976-11-08

1977-12-13

Hoke, V.P.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 75P, 260941, C08K 553

Patent

active

040628299

ABSTRACT:
Polyester compositions containing organophosphorus derivatives as stabilizers are disclosed. Methods of stabilizing polyesters are also provided by incorporating the organophosphorus derivatives during processing to prevent thermal and catalytic decomposition, and with improvements in resin color, molecular weight retention and mechanical properties. This invention also affords an efficient method of inhibiting the decomposition activity of the first stage catalyst in the production of high polymeric condensation polyester resins.

REFERENCES:
patent: 2988558 (1961-06-01), Swern et al.
patent: 3196190 (1965-07-01), Nischk et al.
patent: 3639538 (1972-02-01), Kleiner
patent: 3776884 (1973-12-01), Spivack

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