Heat-sensitive recording material

Details Heat-sensitive recording material Heat-sensitive recording material

1987-06-08

1989-03-21

Hess, Bruce H.

Record receiver having plural interactive leaves or a colorless

Having a colorless color-former, developer therefor, or...

Identified color-former

427151, 428913, 428914, 503221, 503223, 503224, B41M 522

Patent

active

048143200

ABSTRACT:
Disclosed herein is a heat-sensitive recording material in which a chromogenic dye-procursor comprises:
(A) a mixture comprising at least two divinyl phthalide compounds represented by the formula (I): ##STR1## wherein R.sup.1 and R.sup.2 represent respectively alkyl group of 1 to 6 carbon atoms, alkyl group of 1 to 4 carbon atoms having an alkoxy group of 1 to 4 carbon atoms or cycloalkyl group of 5 to 7 carbon atoms, X.sup.1 and X.sup.2 represent respectively hydrogen atom, alkyl group of 1 to 8 carbon atoms, alkoxy group of 1 to 8 carbon atoms, alkoxy group of 1 to 4 carbon atoms having an alkoxy group of 1 to 4 carbon atoms, cycloalkoxy group of 5 to 7 carbon atoms, alkenyloxy group of 3 to 8 carbon atoms, benzyloxy group, substituted benzyloxy group, furfurloxy group, tetrahydrofurfuryloxy group, phenyl group, substituted phenyl group, phenoxy group, substituted phenoxy group, fluorine atom, chlorine atom or bromine atom, m and n represent 0 or integer of 1 to 4, m+n=4 and R.sup.1 and R.sup.2 may join together to form a heterocyclic ring, or
(B) a mixture of the divinyl phthalide compound(s) represented by the formula (I) and at least one compound selected from the compounds represented by the formulas (II), (III) and (IV): ##STR2## wherein R.sup.3 -R.sup.14 represent alkyl group of 1 to 6 carbon atoms, alkyl group of 1 to 4 carbon atoms each having an alkoxy group of 1 to 4 carbon atoms, cycloalkyl group of 5 to 7 carbon atoms, phenyl group, substituted phenyl group or tetrahydrofurfuryl group, p and q represent 0 or integer of 1 to 4 p+q=4, X.sup.3 represents hydrogen atom, alkyl group of 1 to 4 carbons or chlorine atom, X.sup.4 and X.sup.5 respectively represent hydrogen atom, alkyl group of 1 to 4 carbon atoms, flurine atom, chlorine atom or trifluoromethyl group, R.sup.3 and R.sup.4, R.sup.5 and R.sup.6, R.sup.7 and R.sup.8, R.sup.9 and R.sup.10, R.sup.11 and R.sup.12, and R.sup.13 and R.sup.14 may join together to form heterocyclic rings.

REFERENCES:
patent: 4020056 (1977-04-01), Farber
patent: 4022771 (1977-05-01), Farber
patent: 4107428 (1978-08-01), Farber
patent: 4119776 (1978-10-01), Farber
patent: 4580153 (1986-04-01), Kondo et al.

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