发明名称 |
Polyester film and photosensitive material |
摘要 |
A polyester film comprising a polyester whose dicarboxylic acid copolymerized component contains (i) an aromatic dicarboxylic acid having a metal sulfonate and/or a derivative thereof and (ii) a polyetherdicarboxylic acid represented by the following chemical formula (a) and having a mean molecular weight in the range of 600 to 20000 and/or a derivative thereof. R1OOCCH2-(O-R2)n-OCH2COOR3(a) Where, "R1" and "R3" are alkyl groups each having a carbon number of 1 to 8, "R2" is alkylene group having a carbon number of 2 to 8 and "n" is a positive integer. The polyester film has excellent transparency, mechanical properties and dimensional stability such as those of a PET film and an excellent water absorption property such as that of a TAC film. Therefore, when the film is used as a base film for a photosensitive material, a good curl-extinguishing property as well as good transparency, mechanical properties and dimensional stability of the material can be realized.
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申请公布号 |
US5270160(A) |
申请公布日期 |
1993.12.14 |
申请号 |
US19920995885 |
申请日期 |
1992.12.23 |
申请人 |
TORAY INDUSTRIES, INC. |
发明人 |
HIRAOKA, TOSHIHIKO;TSUNASHIMA, KENJI;SUZUKI, MASARU;MIMURA, TAKASHI;KUROME, HIROKAZU |
分类号 |
B32B27/36;C08G63/672;C08G63/688;C08J5/18;G03C1/795;(IPC1-7):G03C1/00 |
主分类号 |
B32B27/36 |
代理机构 |
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代理人 |
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地址 |
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