FOUND AT LAST.

Waikato Times, Volume 118, Issue 18764, 20 December 1935, Page 5

FOUND AT LAST.

PERFECT FADELESS BLUE. (Times Air Mail Service). LONDON, November li. After a hundred years’ search, the perfect fadeless blue has been discovered by British chemists, says the Daily Herald. They have solved the problem which has baffled the world—to find the pigment which would be fadeless and enduring, which would have all-real fastness properties coupled with brilliance of shadeThe discovery is perhaps Britain’s most spectacular challenge so far to Germany’s dyestuff pre-eminence. Seven-point Dye. The new colour, announced to the world yesterday by the Dyestuffs Group of Imperial Chemical Industries, is “Monastral Fast Blue, the Seven-Point Dye." It is called the seven-point dye because, in spite of the great chemical advances and the great strides which have been made in all branches of the dyestuffs industry, there has never been a brilliant, everlasting blue. “And,” said one of the principals of the Dyestuffs Group, “Monastral will outlast any material with which it is used." Its “seven points" are resistance to light, alkali, acid, exceptional heat, and to nitro-celtulose solvents, its retention of brilliance and its good dyeing qualities. The two main blues are Prussian Blue, discovered in 1704, and Ultramarine, discovered in 1820. The first is destroyed by alkalis and the second by acids. In ail of the various industries which use pigments—in colour-printing, paints, varnishes, enamels, cellulose lacquers, synthetic resins, wallpapers, linoleums, leather, rubber, and clothdyeing—the. new pigment can be used with every guarantee of enduring fastness.