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Shellac is an
amorphous, thermoplastic and tough
resin, which forms high-gloss films. It
is soluble in low alcohols (ethanol) and
aqueous-alkaline media but stable
against hydrocarbons. It is
physiologically harmless and
biodegradable. It is produced by
refining of seedlac by means of three
different processes (heat process,
ethanol extraction, chemical bleaching).
Grades of
Shellac |
Application
Wood
treatment inks, finishing, coating agent
for seed, Food: Fruit coatings (e.g.
citrus fruit, melons, apples), parting
and glazing agent (e.g. chocolate,
chewing gum), micro encapsulation of
flavourings, barrier coatings (e.g.
moisture barrier) Pharmaceuticals:
Gastric juices resistant coatings,
barrier coatings (moisture barrier,
odour barrier), sustained release
tablets Cosmetics: Film former in
hairspray, hair settings and nail
lacquer, binder in mascara, micro
encapsulation of fragrances |
