Processes for producing transparent copolyester films

Details Processes for producing transparent copolyester films Processes for producing transparent copolyester films

1990-09-19

1992-07-21

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

2642112, 264235, 264564, B29C 4788, B29C 7102

Patent

active

051320681

ABSTRACT:
A process for producing a transparent film includes forming a melt from a copolyester having structural units represented by the following formulas I and II, respectively: ##STR1## wherein R groups may be the same or different from each other are each selected from the group consisting of

REFERENCES:
patent: 4328333 (1982-05-01), Barbee et al.
patent: 4680157 (1987-07-01), Fujii et al.

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