Loading patent…
AssigneeTohcello Co., Ltd.
InventorsTomoyoshi Hakamata, Akira Nomoto, Osamu Nakamura, Yoshihisa Inoue, Kou Tsurugi, Nobuhiro Tanabe, Yoshihiro Yamamoto
Estimating the term…
Disclosed is an excellent gas barrier laminate whose gas-barrier property has little dependency on temperature and which hardly causes fracture even when the laminate is stretched. A gas barrier film comprising a polymer (A) of an unsaturated carboxylic acid compound monovalent metal salt (a), wherein the polymer (A) contains a modified vinyl alcohol polymer (B); a gas barrier laminate comprising a base layer and the gas barrier film formed on at least one surface of the base layer; and a method for production of a gas barrier laminate comprising the steps of: coating a solution of an unsaturated carboxylic acid compound monovalent metal salt (a) having a polymerization degree less than 20 on at least one surface of a base layer, wherein the solution contains a modified vinyl alcohol polymer (B); performing the polymerizaton to form a layer of the polymer (A) of the unsaturated carboxylic acid compound monovalent metal salt (a) containing the modified vinyl alcohol polymer (B).
A gas barrier film comprising a polymer (A) of an unsaturated carboxylic acid compound polyvalent metal salt (a), the polymer containing a modified vinyl alcohol polymer (B).
A method for manufacturing a gas barrier film or gas barrier laminate by coating at least one surface of a substrate or a substrate layer (C) with a solution of a polyvalent metal salt of an unsaturated carboxylic acid compound having a degree of polymerization of less than 20, the solution containing a modified vinyl alcohol polymer (B), and then forming a polymer (A) of an unsaturated carboxylic acid compound polyvalent salt (a), the polymer containing a modified vinyl alcohol polymer (B).
A method for manufacturing a gas barrier film or gas barrier laminate by coating at least one surface of a substrate or a substrate layer (C) with a solution containing a modified vinyl alcohol polymer (B), an unsaturated carboxylic acid compound with a degree of polymerization of less than 20 and a polyvalent metal compound, and then forming a polymer (A) of an unsaturated carboxylic acid compound polyvalent metal salt (a), the polymer containing a modified vinyl alcohol polymer (B).
A method for manufacturing a gas barrier film by further heat treating a film obtained by first coating a substrate layer with a solution of a polyvalent metal salt of an unsaturated carboxylic acid compound having a degree of polymerization of less than 20, and then polymerizing the unsaturated carboxylic acid compound polyvalent metal salt.
A method for manufacturing a gas barrier film by further heat treating a film obtained by coating a substrate layer with a solution containing an unsaturated carboxylic acid compound with a degree of polymerization of less than 20 and a polyvalent metal compound, and by forming an unsaturated carboxylic acid compound polyvalent metal salt, and then polymerizing the unsaturated carboxylic acid compound polyvalent metal salt.
Dependencies are inferred from the claim text.