PURPOSE: To obtain an easily adhering film which has excellent adhesion and anti-blocking properties, and also can be applied as a base film such as a magnetic recording material by laminating a specific watersoluble copolymerized polyester as an easily adherable layer on the one surface of a polyester film.
CONSTITUTION: A specific water-soluble copolymerized polyester is laminated as an easily adhering layer on the one surface of a polyester film to constitute an easily adhering polyester film. In this case, the water-soluble copolymerized polyester is composed of higher than 50mol% of an aromatic dicarboxylic acid component and 5 to 50mol% of an ester-forming alkali metal sulfonate and glycol component. Further, the 2,2' bis(4'-hydroxyphenyl)propane derivative shown in a separately described formula is copolymerized by a ratio of 5 to 90mol% for a total glycol component (in the formula, R is a divalent hydrocarbon group and R' is phenylene. In addition, m, n are an integer of 1 or higher respectively and m+n is an integer of 2 or higher).
| WO/2021/229407 | MULTILAYER PREFORM AND CONTAINER |
| JP2010253751 | DAMPING LAYER AND DAMPING MATERIAL |
| JP2002178477 | BIAXIALLY STRETCHED COEXTRUSION DULL POLYESTER FILM |
AONO SHOJI
SUZUKI MASARU
