Aromatic polymers of increased resistance to flow and molecular

Details Aromatic polymers of increased resistance to flow and molecular Aromatic polymers of increased resistance to flow and molecular

1974-04-16

1976-08-17

Turer, Richard B.

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

20415911, 260 79, 260 793R, 427 42, 428411, 428426, 428457, C08F 800

Patent

active

039752496

ABSTRACT:
Aromatic polymers of increased resistance to flow and molecular weight are obtained by irradiation using .beta.-rays or .gamma.-rays at temperatures up to 400.degree.C of an aromatic polymer whose molecular chains comprise benzenoid groups and bivalent linking groups, and where irradiation is .gamma.-rays by heating subsequent to irradiaton at 200.degree.C to 400.degree.C. The polymeric materials having increased molecular weight are useful for coating non-cooking surfaces of cookware.

REFERENCES:
patent: 2921006 (1960-01-01), Schmitz et al.
patent: 3491063 (1970-01-01), Fukui et al.
patent: 3518177 (1970-06-01), Morans et al.
Brown et al., The Radiation Stability of an Aromatic Polysulfone, Polymer Letters; vol. 8, pp. 121-126 (1970).
Davies et al., The Electron Irradiation Stability of Polysulphone, Die Makromolekulaire Chemie, 129 (1969), pp. 63-72.

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