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1. (WO2018035345) ORIENTED FILMS AND SHRINK FILMS COMPRISING POLYESTERS WHICH COMPRISE TETRAMETHYL CYCLOBUTANEDIOL AND ETHYLENE GLYCOL

Pub. No.:    WO/2018/035345    International Application No.:    PCT/US2017/047382
Publication Date: Fri Feb 23 00:59:59 CET 2018 International Filing Date: Fri Aug 18 01:59:59 CEST 2017
IPC: C08G 63/183
B32B 27/36
C08J 5/18
C08G 63/199
B29C 55/12
Applicants: EASTMAN CHEMICAL COMPANY
Inventors: WILLIAMS, James, Carl
PEER, James, Wesley
Title: ORIENTED FILMS AND SHRINK FILMS COMPRISING POLYESTERS WHICH COMPRISE TETRAMETHYL CYCLOBUTANEDIOL AND ETHYLENE GLYCOL
Abstract:
This invention relates to an oriented film or a shrink film comprising a polyester composition comprising: (1 ) at least one polyester which comprises: (a) a dicarboxylic acid component comprising: (i) about 90 to about 100 mole % of terephthalic acid residues; (ii) about 0 to about 10 mole % of aromatic and/or aliphatic dicarboxylic acid residues having up to 20 carbon atoms; and (b) a glycol component comprising: (i) about 10 to about 29 mole % 2,2,4,4-tetramethyl-1,3- cyclobutanediol residues; and (ii) about 71 to about 90 mole % ethylene glycol residues; and (iii) optionally, diethylene glycol residues; wherein the total mole % of the dicarboxylic acid component is 100 mole %, and wherein the total mole % of the glycol component is 100 mole %; wherein the inherent viscosity of the polyester is from 0.50 to 0.8 dL/g as determined in 60/40 (wt/wt) phenol/ tetrachloroethane at a concentration of 0.25 g/50 ml at 25°C; wherein the polyester has a Tg of from 80 °C to 105 °C or of from 80 °C to 100 °C as determined using a TA DSC 2920 from Thermal Analyst Instrument at a scan rate of 20 °C/min.; and (2) optionally, wherein the polyester composition comprises at least one plasticizer.