Formazan-cyanine copolymers dyes for optical recording layers an

Details Formazan-cyanine copolymers dyes for optical recording layers an Formazan-cyanine copolymers dyes for optical recording layers an

1996-03-22

1997-07-08

Edwards, Newton

Stock material or miscellaneous articles

Circular sheet or circular blank

428 642, 428 644, 428 648, 428913, 43027014, 4304951, 430945, 369283, 369288, B32B 300

Patent

active

056459106

ABSTRACT:
A copolymer comprising 70 to 100 mole percent of repeating units comprising a formazan dye radical and a cyanine dye radical. The copolymers are useful in recording layers of optical recording elements.

REFERENCES:
patent: 4666819 (1987-05-01), Elmasry
patent: 4680375 (1987-07-01), Elmasry
patent: 5500325 (1996-03-01), Chapman et al.
patent: 5547728 (1996-08-01), Cunningham et al.

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