| abstract |
The present invention relates to (a) a polyvinyl alcohol resin, (b) R 1 mM M (OR 2 ) n (M is Ti, Zr or Al, R 1 is an organic group of C 1-8 , R 2 is C 1 An alkyl group of -5 , an acyl group of C 1-6 , or a phenyl group, m and n are greater than or equal to 0 and m + n represents the valence of M), a hydrolyzate, condensate or chelate of a metal alcoholate Compound, a hydrolyzate or condensate of a metal chelate compound, a metal acylate of R 1 mM (OR 2 ) n , a hydrolyzate or condensate of a metal acylate, and (c) R 3 p Si (OR 4 ) 4- p organosilane of (R 3 is an organic group of C 1-8, R 4 is an acyl group, or a phenyl group of the alkyl group, C 1-6 of C 1-5, p is 0 to 2), the organosilanes A gas barrier coating composition comprising a hydrolyzate or a condensate. The compositions of the present invention exhibit very low oxygen permeability even under high humidity conditions, have excellent adhesion to substrates, can produce coatings that are non-toxic to the human body, and can also be used in pharmaceuticals, food, cosmetics, tobacco and cleaning products. It is useful as a packaging material for. |