Bleachable polymeric filter dyes

Details Bleachable polymeric filter dyes Bleachable polymeric filter dyes

1992-03-20

1993-09-14

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

8647, C08F 2606

Patent

active

052449947

ABSTRACT:
Rapidly processible and irreversibly bleachable polymeric filter dyes for photographic elements are provided wherein a benzoxazle styryl chromophore is covalently bonded to a copolymer, particularly a copolymer of methyl acrylate, methacrylic acid, and sulfoethylmethacrylate, as well as filter layers and photosensitive elements containing them.

REFERENCES:
patent: 2843570 (1958-07-01), Coover et al.
patent: 3672898 (1972-06-01), Schwan et al.
patent: 4059448 (1977-11-01), Sugiyama et al.
patent: 4268622 (1981-05-01), Adachi et al.
patent: 4345017 (1982-08-01), Cournoyer et al.

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