Silver halide activated photochromic plastics

Details Silver halide activated photochromic plastics Silver halide activated photochromic plastics

1976-03-17

1977-09-20

Padgett, Benjamin R.

Compositions

Inorganic luminescent compositions

Tungsten containing

350160P, G03C 102

Patent

active

040495671

ABSTRACT:
Photochromic plastic materials are disclosed which comprise a polymeric matrix containing a multiplicity of activated silver halide particles less than 1000 Angstroms in size. The matrix may contain a retained amount of plasticizer which optimizes the desirable photochromic properties and may be sealed to prevent loss of plasticizer. The materials are made by forming activated silver halide particles in the presence of a film forming polymer dissolved in a plasticizer and removing the plasticizer to produce a supple, shape-retaining element.

REFERENCES:
patent: 3479186 (1969-11-01), Taylor et al.
patent: 3508810 (1970-04-01), Balzer
patent: 3540793 (1970-11-01), Araujo et al.
patent: 3666352 (1972-05-01), Wagner et al.
patent: 3716489 (1973-02-01), De Lapp
patent: 3723349 (1973-03-01), Heseltine et al.

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