Coating or plastic compositions specially designed for saturating or indurating solid base material.
(1) Note. Compositions found in this subclass are those which do not, by themselves, usually form hard, adherent films but exert a hardening or indurating action on the base.
(2) Note. Most of the compositions in this subclass are compositions for saturating and hardening siliceous and calcareous substances, e.g., concrete.
SEE OR SEARCH CLASS
252, Compositions,
601+, for impregnating compositions which exert a fireproofing action.
424, Drug, Bio-Affecting and Body Treating Compositions, appropriate subclass for a composition, biocidal or repellent to pest life, i.e., insects, rodents, microorganisms, etc. and which may saturate a substrate such as paper, wood or textile, etc.
