Accelerated process for making nonlinear polyesters

Details Accelerated process for making nonlinear polyesters Accelerated process for making nonlinear polyesters

1980-03-24

1981-10-13

Griffin, Ronald W.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 22CA, C08G 6348, C09D 364

Patent

active

042947367

ABSTRACT:
The reaction rate of the process for making nonlinear polyesters, i.e., conventional alkyds, is accelerated by using relatively large proportions of solvent, e.g., 15-50% by weight of an aromatic or ketonic high boiler, and, optionally, an esterification catalyst, e.g., tin oxalate. The process results in alkyds having more evenly distributed molecular weights with significantly reduced reaction times and at lowered reaction temperatures with consequent energy savings.

REFERENCES:
patent: 3039980 (1962-06-01), Mallison
patent: 3325428 (1967-06-01), Graver et al.
patent: 4045392 (1977-08-01), Callahan et al.
Solomon, The Chemistry of Organic Film Formers, p. 86, John Wiley & Sons, Inc., N.Y., N.Y. (1967).
Bobalek et al., J. Applied Polymer Science, vol. 8, pp. 625-657 (1964).
Kirk-Othmer, Encyclopedia of Chemical Technology, vol. II, p. 33, John Wiley & Sons, Inc., N.Y., N.Y. (1978).

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