Photostabilization of polymers

Details Photostabilization of polymers Photostabilization of polymers

1975-03-03

1977-09-13

Hoffman, James R.

Stock material or miscellaneous articles

Structurally defined web or sheet

Physical dimension specified

427 40, 427160, 428336, 428394, 428395, B05D 118, B05D 314, B32B 2702, B32B 2716

Patent

active

040483673

ABSTRACT:
Articles formed from polymers which are susceptible to degradative attack by ultraviolet radiation are stabilized by the application of a thin continuous layer of an energy transfer agent, which agent does not significantly absorb radiation in the ultraviolet region of the spectrum. The energy transfer agent is a substituted phenol, and the agent is used in amounts of at most 0.4%, by weight, based on the demonstrate prolonged resistance to ultraviolet degradation.

REFERENCES:
patent: 2920978 (1960-01-01), Randall
patent: 2976259 (1961-03-01), Hardy et al.
patent: 3043709 (1962-07-01), Amborski
patent: 3112338 (1963-11-01), Smutny
patent: 3309220 (1967-03-01), Osteen
patent: 3387991 (1968-06-01), Erchak
patent: 3519462 (1970-07-01), Bristol
patent: 3617330 (1971-11-01), Peilstocker
patent: 3681431 (1972-08-01), Dexter et al.
patent: 3914521 (1975-10-01), Beatty et al.
patent: 3935163 (1976-01-01), Spivack
Modern Plastics Encyclopedia vol. 49: No. 10A Oct. 1972, pp. 435, 437, 438, 488, 489.
Encylopedia of Polymer Science & Technology, vol. 14, pp. 129-136, 1971.

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