Chain couplers for polyesterification and novel polyesters

Details Chain couplers for polyesterification and novel polyesters Chain couplers for polyesterification and novel polyesters

1974-03-07

1976-06-08

Tillman, Murray

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 75M, C08G 6320

Patent

active

039621901

ABSTRACT:
Addition of polycarboxylic chain coupling compounds of the formula: ##SPC1##
To a polyesterification reaction mixture of at least one polyol and at least one polycarboxylic compound (other than the polycarboxylic chain coupling compound) after polyesterification has begun increases the polymerization rate and does not diminish physical properties of the polyester.

REFERENCES:
patent: 3433770 (1969-03-01), Shima et al.
patent: 3444141 (1969-05-01), Shima et al.
patent: 3714125 (1973-01-01), Shima et al.
Dunbar et al., J. Polymer Sci., 21, 550-551 (1956).
Inoue et al., Chemical Abstracts, vol. 78: 98,983f (1973).
Montecatini Edison, Chemical Abstracts, vol. 78: 148,876n (1973).

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