Method for producing a heat-sensitive recording material

Details Method for producing a heat-sensitive recording material Method for producing a heat-sensitive recording material

1990-06-27

1992-08-04

Hess, Bruce H.

Coating processes

Transfer or copy sheet making

Reactive components

503207, 503208, 503209, 503214, B41M 530

Patent

active

051357763

ABSTRACT:
A heat-sensitive recording material is obtained by coating an aqueous dispersion which is prepared by mixing an aqueous dispersion of an electron donating colorless dye with an aqueous dispersion of an electron accepting compound on a base sheet. The aqueous dispersion of an electron donating dye is prepared by a method which comprises the steps of uniformly dispersing at least one electron donating colorless dye and at least one heat-fusible substance selected from the group consisting of 2-benzyloxynaphthalene, parabenzyl biphenyl, 1,4-bis(2-vinyloxyethoxy)benzene, bis [2-(4-methoxyphenoxy)ethyl] ether, 1,2-bis (3-methylphenoxy)ethane, 1,2-diphenoxyethane, benzyl 4-methylthiophenyl ether, 1-(2-methylphenoxy)-2-(4-methoxyphenoxy)ethane and oxalic acid dibenzyl ester with a dispersing binder and/or a surface active agent in water; and pulverizing thus obtained dispersion with use of a horizontal sand mill.

REFERENCES:
patent: 4717593 (1988-01-01), Igarashi et al.

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