A crude, impure, amber-colored form of commercial gelatin of unknown detailed composition produced by hydrolysis of animal collagen; gelatiomizes in aqueous solutions and dried to form a strong, adhesive layer.
An adhesive, of which there are various
types. Aqueous solutions of starch and
ethyl cellulose are used as pastes for sticking
paper; traditional wood glue is made by
boiling animal bones; quickdrying
adhesives are made by dissolving
rubber or a synthetic polymer in a volatile
solvent; and some polymers, such as epoxy
resins and polyvinyl acetate (PVA), are
themselves used as glues.
A colloidal suspension of various proteinaceous materials in water. Most familiar are those derived by boiling animal hides, tendons, or bones, which are high in collagen. Chief sources are slaughterhouse wastes and fish scraps. Other animal-derived glues
