Pressure-sensitive copying paper

Details Pressure-sensitive copying paper Pressure-sensitive copying paper

1991-12-09

1993-01-05

Schwartz, Pamela R.

Record receiver having plural interactive leaves or a colorless

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

Having nonchromogenic liquid spread-control or...

503200, 503215, 503225, B41M 5165

Patent

active

051770512

ABSTRACT:
An extracted and isolated soy protein polymer is used for prevention of premature coloration in CFB pressure-sensitive copying paper which is neutral- or alkaline-sized with an alkyl ketene dimer and which utilizes an acid clay color developer composition. The soy protein polymer may be carried by the base paper, e.g. as a result of size press or size bath application, or may be present in the microcapsule coating.

REFERENCES:
patent: 4762868 (1988-08-01), Wright
Casey, Pulp and Paper, Chemistry and Chemical Technology, 3d Ed., vol. IV, (John Wiley & Sons, 1983).

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