Polyethersulfoneformals

Details Polyethersulfoneformals Polyethersulfoneformals

1980-04-17

1982-01-12

Welsh, Maurice J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528219, C08G 6540

Patent

active

043106544

ABSTRACT:
Thermoplastic hydrolytically stable polyether sulfones having formal linkages are provided by making a polyethersulfone oligomer having terminal bisphenol linkages, and thereafter effecting reaction between the oligomer and an alkylene or bisalkylene halide. The resulting polyethersulfoneformals provide tough, transparent flexible films on solvent casting or compression molding.

REFERENCES:
patent: 3069385 (1962-12-01), Stevens
patent: 4110314 (1978-08-01), Yagi et al.
patent: 4216305 (1980-08-01), Carnahan
patent: 4260733 (1981-04-01), Loucks et al.
McGrath et al., Polymer Engineering & Sci., vol. 17, No. 8, Aug. 1977, pp. 647-651.
Noshay et al., J. Polymer Sci., Part A-1, vol. 9, 1971, pp. 3147-3159.
McGrath et al., J. Polymer Sci., Polymer Symposium 60, 1977, pp. 29-46.

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