Film formed from polyethylene-2,6-naphthalate resin, process for

Details Film formed from polyethylene-2,6-naphthalate resin, process for Film formed from polyethylene-2,6-naphthalate resin, process for

1998-09-09

1999-11-23

Acquah, Samuel A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

528298, 528302, 528308, 525437, C08F 2000

Patent

active

059902485

ABSTRACT:
The present invention relates to a polyethylene-2,6-naphthalate film comprising a resin composed mainly of polyethylene-2,6-naphthalate and having an intrinsic viscosity .eta. in the range of from 0.31 to 0.6, said film having stretch ratios of 1 to 3 times and 1 to 3 times or 3 to 6 times and 1 to 1.8 times respectively in substantially mutually perpendicular directions and a thickness in the range of from 5 to 150 .mu.m;

REFERENCES:
patent: 3673139 (1972-06-01), Hrach
patent: 3875119 (1975-04-01), Aoki et al.
patent: 5006613 (1991-04-01), Shepard et al.
patent: 5176861 (1993-01-01), Ishikawa
patent: 5209972 (1993-05-01), Super et al.
patent: 5387449 (1995-02-01), Kunz et al.
Masayoshi Ito et al.; "Two-Stage Drawing of Poly(Ethylene 2,6-Naphthalate)"; Journal of Applied Polymer Science, vol. 46, No. 6; Oct. 25, 1992; pp. 1013-1023.

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