Ultraviolet absorbing copolymers

Details Ultraviolet absorbing copolymers Ultraviolet absorbing copolymers

1981-09-21

1982-12-07

Robinson, Ellis P.

Batteries: thermoelectric and photoelectric

Photoelectric

Cells

136263, 428 36, 428411, 428334, 428520, 428522, 428913, H01L 3104, B32B 2730, C08F21602

Patent

active

043628958

ABSTRACT:
Photostable and weather stable absorping copolymers have been prepared from acrylic esters such as methyl methacrylate containing 0.1 to 5% of an 2-hydroxy-allyl benzophenone, preferably the 4,4' dimethoxy derivative thereof. The pendant benzophenone chromophores protect the acrylic backbone and when photoexcited do not degrade the ester side chain, nor abstract hydrogen from the backbone.

REFERENCES:
patent: 2962533 (1960-11-01), Hardy et al.
patent: 3049503 (1962-08-01), Milionis et al.
patent: 3107199 (1963-10-01), Tocker
patent: 3113907 (1965-10-01), Tocker
patent: 3133042 (1964-05-01), Tocker
patent: 3173893 (1965-03-01), Fertig et al.
patent: 3215665 (1965-11-01), Sharetts et al.
patent: 3320116 (1967-05-01), Tocker
patent: 3341493 (1967-09-01), Goldberg et al.
patent: 3366668 (1968-01-01), Strobel et al.

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