Eastman Chemical Company

Wayne Ken Shih

Kimberley Carmenia Carico

Nancy Ellen Kinkade

Ronald R Light

Marcus David Shelby

James W Mercer, Jr

Candace Michele Tanner

Rondell Paul Little, Jr

Emily Tedrow Bell

Robert J Turney

William LeRoy Wortman

Jennifer Deanne Moore

Ping Peter Shang

Polyester-based films contain certain copolyesters (A) and polyester plasticizers (B). The copolyesters (A) may be selected from those in which the force required to stretch a film of the copolyester (A) by itself, from 2&#xd7; to 5&#xd7;, increases by less than 200%. The polyester plasticizers (B) have a weight-average molecular weight of 900 to 12,000 g/mol, and contain (i) a diol component comprising residues of diols having 2 to 8 carbon atoms, and (ii) a diacid component comprising residues of dicarboxylic acids having 4 to 12 carbon atoms. These polyester-based films are particularly useful for preparing ultra-thin LCD or OLED polarizers, because they can be stretched very thin with a high stretch ratio at lower temperatures.

Copolyesters plasticized with polymeric plasticizer

Described are polymer compositions that include a blend of copolyester polymers based on monomers that include on terephthalic acid (TPA), isophthalic acid (IPA) and 1,4-cyclohexanedimethanol (CHDM), wherein the blend includes a first copolyester that is semi-crystalline and a second copolyester that is amorphous; and films made from the polymer compositions useful for transparent high temperature conductive film applications.

Polymer compositions and substrates for high temperature transparent conductive film applications

Disclosed is a shrink film containing a copolyester having a minimum crystallization half-time of at least 8.6 minutes and a polyester plasticizer having a weight-average molecular weight of 900 to 12,000 g/mol. The polyester plasticizer includes (i) a polyol component comprising residues of a polyol having 2 to 8 carbon atoms, and (ii) a diacid component comprising residues of a dicarboxylic acid having 4 to 12 carbon atoms.

Copolyesters plasticized with polymeric plasticizer for shrink film applications

Copolysters plasticized with polymeric plasticizer for shrink film applications

Disclosed is a film containing a copolyester having a minimum crystallization half-time of at least 8.6 minutes and a polyester plasticizer having a weight-average molecular weight of 900 to 12,000 g/mol. The polyester plasticizer includes (i) a polyol component comprising residues of a polyol having 2 to 8 carbon atoms, and (ii) a diacid component comprising residues of a dicarboxylic acid having 4 to 12 carbon atoms.

Herein disclosed are s extruded and multilayer films suitable for use as a substrate for printed circuits that afford the simultaneous achievement of both excellent mechanical properties, printability and ink curing stability, flexability and stretchability, and electronic performance. The films can be prepared from cycloaliphatic polymers and polyester elastomers.

Multilayer stretchable films for flexible printed circuits and methods of making

A reactor grade copolyester composition, as well as a heat-shrinkable film made therefrom, unexpectedly has higher ductility than a multi-component blend of copolyesters with the same monomer concentrations. The reactor grade copolyester composition is made from a diacid component of at least about 90 mole percent and a diol component of (a) about 72 to about 88 mole percent ethylene glycol, about 10 to about 15 mole percent 1,4-cyclohexanedimethanol, and about 2 to about 13 mole percent diethylene glycol, or (b) about 59 to about 77.5 mole percent ethylene glycol, about 15 to about 28 mole percent 1,4-cyclohexane-dimethanol, and about 7.5 to about 13 mole percent diethylene glycol. Further, the heat-shrinkable film may be produced to closely match the shrink characteristics of polyvinyl chloride by varying the amounts of the diol components of the reactor grade copolyester composition. Furthermore, a reactor grade copolyester composition has a b* color value of &minus;1.0 to less than 4.5, wherein the diacid component is at least about 90 mole percent terephthalic acid and the diol component is about 52 to about 88 mole percent ethylene glycol, about 10 to about 28 mole percent 1,4-cyclohexane-dimethanol, and about 2 to about 20 mole percent diethylene glycol.

Reactor grade copolyesters for shrink film applications

A heat-shrinkable film is made from a copolyester blend of 1 to 98.5 weight percent PETG copolyester, 98.5 to 1 weight DEG modified PET copolyester having a b* value of less than 15, 0.5 to 3 weight percent anti-blocking agent, and optionally, 5 to 15 weight percent crystallizable polyester. The PETG copolyester has a dicarboxylic acid component of at least 95 mol percent terephthalic acid and a diol component of 65 to 80 mol percent ethylene glycol and 35 to 20 mol percent 1,4-cyclohexane-dimethanol. The DEG modified PET copolyester has a dicarboxylic acid component of at least 75 mol percent terephthalic acid; a diol component of 10 to 50 mol percent diethylene glycol and 50 to 90 mol percent ethylene glycol; catalyst residues of 20 to 100 ppm manganese, 50 to 300 ppm antimony, 0 to 100 ppm titanium and 40 to 150 ppm phosphorus; and color control agent residues of (i) 40 to 100 ppm cobalt, (ii) 1.5 to 10 ppm of blue compounds of substituted 1,4-bis(2,6-dialylanilino) anthraquinones and 0.5 to 6 ppm of red compounds of anthraquinones, or (iii) 0.5 to 10 ppm of 1-cyano-3H-dibenz isoquinoline-2,7-diones.

Clarity and adjustable shrinkage of shrink films using miscible

This invention relates to polyester/plasticizer blends which are useful as heat-shrinkable films or sheets in low temperature shrink packaging applications. The heat-shrinkable films or sheets comprise a blend of (A) 90 to 99 weight percent of a polyester having a glass transition temperature of 40.degree. C. to 150.degree. C. and an inherent viscosity of 0.5 to 1.2 dL/g and (B) 1 to 10 weight percent of a plasticizer selected from a C.sub.5 to C.sub.35 monoglyceride prepared from the reaction of glycerol and a fatty acid having 4 to 30 carbon atoms, wherein the combined weights of (A) and (B) total 100 percent. The polyester comprises a dicarboxylic acid component comprising repeat units from at least 80 mole percent of an aromatic dicarboxylic acid having 8 to 14 carbon atoms and a diol component comprising repeat units from at least 10 mole percent of 1,4-cyclohexanedimethanol, based on 100 mole percent dicarboxylic acid and 100 mole percent diol.

Plasticized polyester for shrink film applications

A thermoforming process window of a rectangular sheet of a thermoplastic material is determined by calculating its Sag Number during heating. The Sag Number is a function of the sheets length, width and apex depth at the center of sag. Upon the Sag Number being between 10 and 40, preferably 15 and 35, and more preferably 19 and 28, the sheet is ready for forming into an end product.

Method of determining a thermoforming process window of a thermoplastic

This invention relates to polyester/plasticizer blends which are useful as heat-shrinkable films or sheet in low temperature shrink packaging applications. The plasticizer is injected into the melt of the polyester. The plasticizer lowers the glass transition temperature, on-set temperature and shrink rate of the polyester. Film or sheet produced by the polyester/plasticizer blends is clear.

A label for containers comprises a foamed polyester film that has a density of less than 1 g/cm.sup.3. The foamed polyester film may be blown away in air and then floated away in water during the recycle process for containers. After separation from the containers the foamed polyester film may be reclaimed by a chemical process to recover raw materials for polyesters.

Non-shrinkable and shrinkable foamed polyester film for the labeling of

Plasticized polyesters for shrink film applications

Monolayer and multilayer non-oriented polyester films comprising of at least one layer of an amorphous heat-sealing polyester wherein the heat-sealing polyester consisting essentially of terephthalic acid, ethylene glycol, and about 7-15 mol % cyclohexanedimethanol. The heat-sealing polyester has a heat of fusion greater than 0.5 cal/g and is sufficiently crystallizable to allow the drying of mixtures of the heat-sealing polyesters with other crystallizable polyesters without sticking. Multilayered films also contain a layer of an amorphous crystallizable polyethylene terephthalate.

Growing community of inventors

Kingsport, TN, United States of America

Wayne Ken Shih