MOISTURE-PERMEABLE AND WATER-PROOF FILM AND MOISTURE-PERMEABLE AND WATER-PROOF COMPOSITE MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide a moisture-permeable and water-proof film and a moisture-permeable and water-proof composite material that are produced through the process of low environmental loading by utilizing a polymer having excellent moisture-permeation properties and water-proofing properties, material durability, can be produced by using a polymer that can be made water-based.;SOLUTION: The moisture-permeable and water-proof film comprises two or more kinds of resin layers including, as the polymerization components, bishydroxyalkyl fatty acids and polyalkylene glycol, in which the content of the bishydroxyalkyl fatty acid is 0.08 mmol/g to 0.5 mmol/g based on the resin solid content, at least one of the alkylene glycol is polyethylene glycol in an amount of 20 wt.% to 60 wt.% on the resin solid content and further the moisture permeability according to the potassium acetate method (B-1 method) at average film thickness of 20 μm (JIS L-1099) is 3×10³ g/m²×24 hr to 200×10³ g/m²×24 hr.;COPYRIGHT: (C)2005,JPO&NCIPI