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Title:
METHOD FOR PRODUCING GAS-BARRIER LAYER-FORMING COATING LIQUID AND METHOD FOR PRODUCING GAS-BARRIER LAMINATED FORM
Document Type and Number:
Japanese Patent JP2008248062
Kind Code:
A
Abstract:

To provide a method for producing a gas-barrier layer-forming coating liquid in a shorter time than ever, and if needed, capable of forming the coating liquid (an aqueous dispersion of a polycarboxylic acid partially neutralized with a polyvalent metal) in higher concentration, and thereby to provide a method for producing a gas-barrier laminated form reasonably as a whole.

The method for producing the gas-barrier layer-forming coating liquid comprises the following process: an ethylenically unsaturated carboxylic acid is mixed with a polyvalent metal compound at 0.05-0.75 chemical equivalent based on the ethylenically unsaturated carboxylic acid in an aqueous medium followed by conducting a polymerization reaction to form (A) an aqueous dispersion of a polycarboxylic acid partially neutralized with a polyvalent metal. The method for producing the gas-barrier laminated form comprises the following process: at least one side of a substrate is coated with the aqueous dispersion A directly or, as appropriate, a coating liquid (B) formed by diluting the aqueous dispersion A, followed by evaporation to dryness to form a gas-barrier layer (a) on the substrate. Subsequently, the resulting substrate is coated with a (C) a coating liquid containing a polyvalent metal compound followed by evaporation to dryness to form a polyvalent metal compound-containing layer (c).


Inventors:
Sakabe, Hiroshi
Komatsu, Masatomo
Yamazaki, Masahiro
Omori, Nozomi
Munakata, Hideo
Application Number:
JP2007000090581
Publication Date:
October 16, 2008
Filing Date:
March 30, 2007
Export Citation:
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Assignee:
KUREHA CORP
International Classes:
C09D133/00; B32B27/32; C08F220/04; C09D5/02
Domestic Patent References:
JP2005125693A
JP2006225551A
JP2004315586A
JP2004323817A
JP2002338821A
JP2006334990A2006-12-14
JP2004238604A
JP2005125693A
JP2006225551A
JP2004315586A
Foreign References:
WO2003091317A1
WO2006057177A1
WO2006059773A1
Attorney, Agent or Firm:
猿渡 章雄
波多野 久
関口 俊三
河村 修
小宮 憲