Seed-Lac Factors Which Affect the Flow

Seed-Lac Factors Which Affect Bleeching Quality

“…The claim advanced by Gardner and Harris (1) that the bleachability may be related to the material insoluble in boiling acetone does not hold for seed-lacs (Table III). The amount of material which was insoluble in this solvent (2) appeared to more or less depend on the total age of the sample (the age as stick-lac plus the age as seed-lac), but there is no relation between age and the amount of material insoluble in boiling alcohol. Bleachability is also independent of the material insoluble in the latter solvent.…”