Opaque jet ink compositions

Details Opaque jet ink compositions Opaque jet ink compositions

1982-04-28

1983-06-21

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524 41, 524755, 524765, 106 22, 106 26, 106189, 523160, 523171, 523218, 346 11, 346 75, C08L 114, C08K 506, C08L 9300, C08K 507

Patent

active

043895034

ABSTRACT:
The present invention relates to non-pigmented jet ink compositions and to a method of producing opaque coded messages therewith. The compositions comprise, on a weight basis, between 2 and 15% of a gellable cellulose ester having a hydroxyl content of from 2 to 8%, from 1.5 to 15% of a binding agent selected from the group consisting of alkali soluble rosin type and maleic type resins, polyvinyl acetate resins, and acrylic resins, and a solvent blend, the blend consisting essentially of an organic solvent system and a non-solvent, said non-solvent comprising from 2 to 10% by weight of the ink compositions. Preferred solvents are methanol, acetone, methyl ethyl ketone and ethyl acetate, while the preferred non-solvent is water. Upon evaporation of the solvent blend, the resultant dry films scatter light incident thereto whereby the opaque images are produced. In a particularly preferred embodiment, a hygroscopic salt is included in the composition as an opacity enhancement agent.

REFERENCES:
patent: 3031328 (1962-04-01), Larsen
patent: 3654193 (1972-04-01), Seiner
patent: 4195104 (1980-03-01), Fell
patent: 4207577 (1980-06-01), Mansukhani
patent: 4290072 (1981-09-01), Mansukhani

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