Magnetic recording compositions containing ionic dye compounds a

Details Magnetic recording compositions containing ionic dye compounds a Magnetic recording compositions containing ionic dye compounds a

1987-07-02

1989-01-31

Dixon, Jr., William R.

Compositions

Magnetic

With wax, bitumen, resin, or gum

428694, 428900, 428913, 427 44, 427 541, 427 531, 522 25, 522 26, 522 31, C04B 3526, H01F 126

Patent

active

048013927

ABSTRACT:
The present invention provides magnetic recording compositions containing magnetic particles and a photohardenable composition wherein the photohardenable composition contains a free radical addition polymerizable or crosslinkable compound and an ionic dye-reactive counter ion compound. The ionic dye-reactive counter ion compound is capable of absorbing actinic radiation and producing free radicals within initiate free radical polymerization or crosslinking of the polymerizable or crosslinkable compound. The present invention also provides magnetic recording media incorporating the aforementioned magnetic recording compositions.

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patent: 3708296 (1973-01-01), Schlesinger
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patent: 4560617 (1985-12-01), Nishimatsu et al.
patent: 4596747 (1986-06-01), Nishimatsu et al.
patent: 4664964 (1987-05-01), Okita et al.
patent: 4694029 (1987-09-01), Land
patent: 4707431 (1987-11-01), Umehara
patent: 4707432 (1987-11-01), Gatechair et al.

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