Biaxially oriented films containing layers of polyethylene napht

Details Biaxially oriented films containing layers of polyethylene napht Biaxially oriented films containing layers of polyethylene napht

1996-04-05

1999-07-06

Chen, Vivian

Stock material or miscellaneous articles

Hollow or container type article

Nonself-supporting tubular film or bag

428 352, 428 3692, 428323, 428328, 428329, 428330, 428331, 428338, 428339, 428480, 428694ST, 428694SL, 428910, 528302, 528305, 528308, 5283086, 2642902, B32B 108, B32B 2718, B32B 2736, B32B 3100

Patent

active

059195363

ABSTRACT:
Biaxially oriented films containing at least one layer of polyethylene naphthalate bibenzoate (PENBB) copolyester wherein the copolyester contains from about 60 to about 40 mol % of a first recurring unit of the formula (II). ##STR1## and about 40 to about 60 mol % of a second recurring unit of formula (I). The copolyester preferably contains less than 10 mol % of recurring units derived from terephthalate or other dicarboxylic acids. The films have a total thickness of 0.05-500 .mu.m and may contain inert particles.

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