Carbonless copy paper sheet bearing a high solids CB printing in

Details Carbonless copy paper sheet bearing a high solids CB printing in Carbonless copy paper sheet bearing a high solids CB printing in

1990-03-28

1992-07-21

Schofer, Joseph L.

Record receiver having plural interactive leaves or a colorless

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

Identified solvent or dispersant for color-former, other...

42840221, 264 47, B41M 520, B41M 524

Patent

active

051322714

ABSTRACT:
A high solids content, aqueous, microcapsule-containing printing ink is prepared by forming microcapsules in situ in a printing ink vehicle. The microcapsules are preferably prepared by interfacial polymerization or interfacial crosslinking between a reactant, such as a polyisocyanate dissolved in an oily solution and a coreactant such as a polysalt of casein and diethylene triamine present in an aqueous solution into which the oily solution is dispensed. The aqueous solution contains water and a non-volatile diluent such as a non-reducing sugar, for example methyl glucoside. The printing ink preferably has a 60-70% by weight solids content and may be used as a low-coat-weight CB coating for preparing carbonless copy paper.

REFERENCES:
patent: 4874832 (1989-10-01), Jabs et al.

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