Toch, Maximilian, 1864-1946, Toch, Maximilian, 1864-1946. Chemistry and technology of mixed paints · New York : D. Van Nostrand · leaf 130
THE INERT FILLERS AND EXTENDERS 127 Clay Composition, Silicate of Alumina; Synonym, Kaolin, Fuller's Earth Clay in small quantities is very largely used by paint manufacturers, first, to prevent settling or hardening … as 60 per cent, and as No. 49. Diatoms — Photomicrograph XSoo, found in whiting, clay, and clay is found naturally in infusorial earth. the pigments referred to they cannot, of course, be regarded as adulterated, but when large quantities of clay are added to other- wise good paints the wear- ing…
Paint · Pigments
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