Pressure-sensitive copying paper

Details Pressure-sensitive copying paper Pressure-sensitive copying paper

1993-06-21

1995-03-14

Ryan, Patrick J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

4283211, 428409, 428511, 428514, 428688, B32B 300

Patent

active

053976240

ABSTRACT:
A styrene-acrylic ester copolymer latex 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 or other inorganic color developer composition. The copolymer 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: 4295662 (1981-10-01), Tutty
patent: 4298651 (1981-11-01), Tutty
patent: 4339275 (1982-07-01), Tutty
patent: 4486762 (1984-12-01), Okamoto et al.
patent: 4688060 (1987-08-01), Tanaka et al.
patent: 4888334 (1989-12-01), Ohga et al.
patent: 4962072 (1990-10-01), Cooper et al.
patent: 5177051 (1993-01-01), Hobson et al.
W. R. Reynolds, ed., The Sizing of Paper, 2d ed., Tappi Press (1989), pp. 33-49.
"Colle SP 6", promotional literature.
"Basoplast 400 DS", promotional literature.

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