Self-contained pressure sensitive copying material and its produ

Details Self-contained pressure sensitive copying material and its produ Self-contained pressure sensitive copying material and its produ

1984-10-05

1986-09-16

Lovering, Richard D.

Recorders

Record receiver deforming

264 43, 346209, 346214, 422 5, 427150, 427151, 4283215, 428914, B41L 120, B41M 312

Patent

active

046125566

ABSTRACT:
Free formaldehyde is removed from a formaldehyde-containing suspension of microcapsules by the addition of a compound having a B dicarbonyl group or a cyclic ketone. The thus-treated microcapsules are particularly suitable for the production of self-contained pressure sensitive copying material in which the image-generating reactants are present in a single coating composition.

REFERENCES:
patent: 3447945 (1969-06-01), Mishima et al.
patent: 4028320 (1977-06-01), Sera et al.
patent: 4066636 (1978-01-01), Sera et al.
patent: 4105823 (1978-08-01), Hasler et al.
patent: 4223060 (1980-09-01), Raine et al.
patent: 4308320 (1981-12-01), Schiller
patent: 4409156 (1983-10-01), Hoshi et al.
patent: 4450123 (1984-05-01), Egawa et al.
patent: 4460722 (1984-07-01), Igarashi et al.

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