B - Operations – Transporting – 41 – L
Patent
B - Operations, Transporting
41
L
42/16, 42/3, 46/
B41L 1/36 (2006.01) B41M 5/155 (2006.01) B41M 5/333 (2006.01) G03G 5/00 (2006.01)
Patent
CA 1151425
ABSTRACT RECORD MATERIAL CARRYING A COLOUR DEVELOPER COMPOSITION A colour developer for use in a pressure- or heat- sensitive record material-comprises a particulate amorphous hydrated silica/hydrated alumina composite in which the hydrated silica and hydrated alumina are chemically bound and in which the mean alumina content on a dried weight basis is up to 7.5%, based on the total weight of silica and alumina. The composite may be metal-modified, e.g. with copper.
380152
Arjo Wiggins Limited
Fetherstonhaugh & Co.
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