Polyester film
AssigneeSkc Co., Ltd.
InventorsKwang-Jin Song, Byeong-Ho Cho, Yong-Won Kim
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Abstract
The present invention relates to a biaxially oriented polyester film comprising a metallic alkylbenzene sulfonate derivative of formula(I), polyethylene glycol and, optionally, bis(4-.beta.-hydroxyalkoxyphenyl) sulfones of formula(II), which has improved antistatic property, clarity, mechanical properties and heat resistance: ##STR1## wherein: R represents an optionally substituted C.sub.8-25 alkyl group; M represents an alkali or alkali earth metal; m is an integer of 100 or fewer; and n is an integer from 1 to 10.
Claims9
A biaxially oriented polyester film having 70% or more by weight of polyethylene terephthalate, which further comprises 0.05 to 10% by weight of a metallic alkylbenzene sulfonate derivative of formula(I);
- 0.1 to 10% by weight of polyethylene glycol having a molecular weight ranging from 500 to 100,000;
- and 0.1 to 10% by weight of bis(4-.beta.-hydroxyalkoxyphenyl) sulfone of formula(II) on the basis of the total dry weight of film:
- ##STR6## wherein:
- R represents an optionally substituted C.sub.8-25 alkyl group;
- M represents an alkali or alkaline earth metal;
- m is an integer of 100 or fewer;
- and
- n is an integer from 1 to 10.
Dependencies are inferred from the claim text.