Patent ID: 7879947
Filing Date: 2011-02-01
Classification: B32B,C08J,C08K,C08L,C09D,C09J

Abstract:
1. A method for producing a composition having gas-barrier properties composition having gas-barrier properties comprising: a water-soluble polymer having hydroxyl groups (A), a water-soluble polymer having carboxyl groups (B), a metal alkoxide and/or a hydrolysis condensate thereof (C), an esterification catalyst (E), and a compound having one or more of a functional group capable of forming a bond with a metal oxide, and one or more of a functional group capable of forming a bond with a carboxyl group respectively in one molecule (D), wherein the weight ratio of the component (A) and the component (B) is 97/3 to 3/97, and the component (C) is contained in the amount of not less than 1 part by weight and not more than 450 parts by weight, while the component (E) is contained in the amount of not less than 0.01 part by weight and not more than 100 parts by weight, relative to 100 parts by weight of a mixture of the component (A) and the component (B), wherein the component (E) is dicyanodiamide, and wherein the component (D) is contained in the amount of not less than 1 part by weight and not more than 20 parts by weight relative to 100 parts by weight of a mixture of the component (A) and the component (B), comprising: mixing the component (A), the component (B), the component (D) and the component (E) in a solvent; and mixing the mixture liquid obtained from the previous step and the component (C), wherein during the mixing the mixture liquid and the component (C), a hydrolysis condensation reaction of the component (C) is conducted.