Mixture of thermoplastic aromatic copolyetherketone/sulphone and

Details Mixture of thermoplastic aromatic copolyetherketone/sulphone and Mixture of thermoplastic aromatic copolyetherketone/sulphone and

1974-09-30

1976-11-23

Czaja, Donald E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 793M, C08G 7523

Patent

active

039936287

ABSTRACT:
A mixture of i) a thermoplastic copolyetherketone/sulphone containing --AR--CO (75-90%) and --Ar--SO.sub.2 -- (25-10%) repeat units wherein Ar is a bivalent aromatic radical which may vary from unit to unit and at least some of the Ar groups contain aromatic ether links ortho or para to at least one --CO-- or --SO.sub.2 -- group and ii) sulphur, a dithiol, or a polydisulphide in such a quantity that the amount of sulphur (as such or in thiol or disulphide groups) is 0.01 to 5% by weight of the combined weight of copolyetherketone/sulphone and sulphur. On heating this mixture to 300.degree.-450.degree. C the molecular weight of the polymer increases.

REFERENCES:
patent: 3441538 (1969-04-01), Marks
patent: 3634355 (1972-01-01), Barr et al.
patent: 3751398 (1973-08-01), Dahl
patent: 3787363 (1974-01-01), Staniland et al.
patent: 3928295 (1975-12-01), Rose

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