Aqueous adhesive for inorganic materials

Abstract

To provide an aqueous adhesive for an inorganic material with excellent adhesiveness to the inorganic material. An adhesive improver (J) for an aqueous adhesive of an inorganic material including a (co) polymer (A) containing an unsaturated (poly) carboxylic acid (anhydride) (al) as a constituent monomer, wherein a weight-average molecular weight of the (co) polymer (A) is 6,000 to 200,000; and an aqueous adhesive for an inorganic material (X) including the adhesive improver (J) for an aqueous adhesive of an inorganic material, a saccharide (B), a polycarboxylic acid (C) having 4 to 24 carbon atoms, and water.

Dependencies are inferred from the claim text.