Laminated polyester film to be laminated on metal plate
A laminated polyester film to be laminated on a metal plate, which comprises: (A) a first layer formed of a first aromatic copolyester which (a1) contains terephthalic acid as a main dicarboxylic acid component and ethylene glycol as a main glycol component and which has (a2) a melting point in the...
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Main Authors | , |
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Format | Patent |
Language | Chinese English |
Published |
21.01.1999
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Subjects | |
Online Access | Get full text |
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Summary: | A laminated polyester film to be laminated on a metal plate, which comprises: (A) a first layer formed of a first aromatic copolyester which (a1) contains terephthalic acid as a main dicarboxylic acid component and ethylene glycol as a main glycol component and which has (a2) a melting point in the range of 210 to 245 DEG C and (a3) a glass transition temperature of at least 60 DEG C, wherein the first aromatic copolyester has an intrinsic viscosity of 0.52 to 1.5 dl/g, and the first aromatic copolyester is produced in the presence of a germanium compound as a polycondensation catalyst, and (B) a second layer formed of a molten blend which comprises 60 to 99% by weight of a second aromatic polyester which (b1) contains ethylene terephthalate as a main recurring unit and which has (b2) a melting point in the range of 210 to 255 DEG C and (b3) a glass transition temperature of at least 60 DEG C and 1 to 40% by weight of a third aromatic polyester which (c1) contains tetramethylene terephthalate as a main recurr |
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Bibliography: | Application Number: TW199584110897 |