Luminous Paints.

Manufacturer and builder 12 / 1891

For Orange Luminous Paint, 46 parts varnish are mixed with 17.5 parts prepared barium sulphate, 1 part prepared India yellow, 1.5 parts prepared madder lake, and 38 parts luminous calcium sulphate.

For Yellow Luminous Paint, 48 parts varnish are mixed with 10 parts of prepared barium sulphate, 8 parts barium chromate, and 34 parts luminous calcium sulphate.

For Green Luminous Paint, 48 parts varnish are mixed with 10 parts prepared barium sulphate, 8 parts chromium oxide green, and 34 parts luminous calcium sulphide.

For Blue Luminous Paint is prepared from 42 parts varnish, 10.2 parts prepared barium sulphate, 6.4 parts ultramarine blue, 5.4 parts cobalt blue, and 46 parts luminous calcium sulphide.

A Violet Luminous Paint is made from 42 parts varnish, 10.2 parts prepared barium sulphate, 2.8 parts ultramarine violet, 9 parts cobaltous arsenate, and 36 parts luminous calcium sulphide.

For Gray Luminous Paint, 45 parts of the varnish are mixed with 6 parts prepared barium sulphate, 6 parts prepared calcium carbonate, 0.5 part ultramarine blue, 6.5 parts gray zinc sulphide.

A Yellowish Brown Luminous Paint is obtained from 48 parts varnish, 10 parts precipitated barium sulphate, 8 parts orpiment, and 34 parts luminous calcium sulphide.

Luminous Colors for Artists' use are prepared by using pure East India poppy oil, in the same quantity, instead of varnish, and taking particular pains to grind the materials as fine as possible.

For Luminous Oil-Color Paints, equal quantities of pure linseed are used in place of the varnish. The linseed oil must be cold-pressed and thickened by heat.

All the above luminous paints can be used in the manufacture of colored papers, etc., if the varnish is altogether omitted, and the dry mixtures are ground to a paste with water.

The luminous paints can also be used as wax colors for painting on glass and similar objects, by adding, instead of the varnish, 10 per cent more of Japanese wax and one-fourth the quantity of the latter of olive oil. The wax colors prepared in this way may also be used for painting upon porcelain, and are then carefully burned without access of air. Paintings of this kind can also be treated with waterglass.