Unfalsifiable safety paper

Details Unfalsifiable safety paper Unfalsifiable safety paper

1986-01-17

1988-02-16

Ives, P. C.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Weight per unit area specified

428323, 4285375, 428915, 162140, 162162, B32B 2304, D21H 510

Patent

active

047254971

ABSTRACT:
This invention relates to an unfalsifiable safety paper comprising on its surface and/or in its mass, at least one compound responding to formula: ##STR1## in which: R corresponds to hydrogen, to an alkyl group of C.sub.1 to C.sub.8, substituted or not, to a non-substituted, N-substituted or N,N-substituted amine group, to NO.sub.2, to a halogen;

REFERENCES:
patent: 2333979 (1943-11-01), Bradt
patent: 4322466 (1982-03-01), Tomlinson
patent: 4451521 (1984-05-01), Kaule et al.

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