The British coal-tar industry : its origin, development, and decline (1915)
Gardner, Walter Myers, 1862- · Philadelphia : J.B. Lippincott · leaf 286
PATENT LAW IN RELATION TO DYESTUFFS 271 that for the first twenty years little else was done than the ringing of the changes on aniline and its homologues. The differences between the rosaniline curve and the general curve up to this point are largely due to the anthracene dyestuff curve (fig. 5), … 1 55 60 65 70 75 80 85 90 95 00 05 FIG. 4. which sprang into being with Liebermann and Graebe's Patent No. 3850, of 1868, for the manufacture of artificial alizarin. There were also a few specifications relating to azo dyestufFs in this period, it having been discovered that by treating amines with…
Coal-tar industry -- Great Britain · Coal-tar colors
Internet Archive · University of California Libraries · Public domain (published before 1931). Free to use for anything.
