Process for producing pressure-sensitive copy sheets using novel

Details Process for producing pressure-sensitive copy sheets using novel Process for producing pressure-sensitive copy sheets using novel

1977-08-24

1979-01-30

Smith, Ronald H.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

427 44, 427 54, 427150, 427151, 427152, C09D 1100

Patent

active

041370848

ABSTRACT:
A process is provided for producing a pressure-sensitive carbonless transfer or record sheet comprising the steps of preparing a liquid chromogenic coating composition by mixing chromogenic material with a liquid radiation curable substance, the chromogenic material comprising either an acidic color developer of the electron donator type or a color precursor of the electron accepting type. The liquid coating composition is coated onto a web or substrate at a coat weight of from about 0.2 pounds to about 8.0 pounds per 3300 square feet of substrate. The coated web is then exposed to radiation for a time sufficient to cure the liquid coating composition to a tack-free film. A novel liquid chromogenic coating composition is produced, the coating composition comprising a chromogenic material and a radiation curable substance. A pressure-sensitive copy sheet is produced, the copy sheet comprising a substrate having a plurality of surfaces at least one of the surfaces being coated with a tack-free film, the film comprising a radiation cured resin containing a chromogenic material dispersed.

REFERENCES:
patent: 2170040 (1939-08-01), Grupe
patent: 2781278 (1957-02-01), Harmon
patent: 3759807 (1973-09-01), Osborn et al.
patent: 3955025 (1976-05-01), Matsukawa
patent: 3957495 (1970-05-01), Teranishi et al.
patent: 3979270 (1976-09-01), Trecker et al.
patent: 3981523 (1976-09-01), Maalouf
patent: 3996405 (1976-12-01), Porter
patent: 4012554 (1977-05-01), Miller et al.

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