Eastman-kodak Company

The Coca-cola Company

Eastman Chemical Company

Doyle A Weemes

Richard L McConnell

Robert W Seymour

Frederick B Joyner

Yu Shi

Francis M Schloss

Frederick D Petke

Thomas H Wicker, Jr

John R Dombroski

George J O'Neill

Mary K Weemes, Legal Representative

A container comprising a polyester composition with enhanced carbon dioxide and oxygen barrier properties is provided. The polyester composition comprises a polyester and a purine derivative. In a particular embodiment, the purine derivative comprises a purine dione, such as caffeine.

Container and composition for enhanced gas barrier properties

Molding compositions having high impact at low temperatures and which are blends of copolyesters based on poly(1,4-cyclohexylenedimethylene terephthalate) and rubber-modified styrene-maleic anhydride copolymers having at least two rubbery additives that were present during the polymerization of the copolymers.

High-impact polyester/styrene-maleic anhydride copolymer blends

Coated articles comprising a substrate and a coating, the articles having a decreased water vapor transmission rate and ability to withstand autoclaving conditions as evidenced by decreased tendency toward blistering, peeling and haze. The substrate comprises copolyesterethers of polytetramethyleneether glycol. The coating comprises a solution-deposited layer of a copolymer derived from about 70-99 weight % vinylidene chloride.

Copolyesterethers coated with saran

Disclosed are compositions having improved resistance to oxygen and carbon dioxide permeability comprising a copolyester derived from an acid component consisting essentially of 55-99 mol % terephthalic acid, 45-1 mol % of at least one acid of the formula HOOC--(CH.sub.2).sub.n --COOH where n is 1 to 6, and a glycol component, at least 60 mol % of which is ethylene glycol, the copolyester having an I.V. of about 0.1-1.5.

Modified poly(ethylene terephthalate) having improved gas barrier

Disclosed are compositions comprising blends of (a) a polyester having an inherent viscosity of about 0.4-1.5, (b) about 5 to about 35 weight %, based on the weight of the composition, of polyethylene having a melt index of about 0.1-15.0 and a density of about 0.910-0.965, and (c) about 0.25 to about 5 weight %, based on the weight of the composition, of poly(tetramethylene terephthalate)-co-2-butene-1,4-diol having an inherent viscosity of 0.9 to 1.5 grafted with a low density polyethylene. These compositions are especially useful as molding compositions because of their high impact strength.

Polymeric molding compositions having the high impact strength

Coating composition

Polyester composition characterized by a balance of physical properties more suitable for molding purposes than possible with the polyesters themselves, including blends of a polyester, poly(ethylene-co-propylene) rubber (EPR) and an ionomer of poly(ethylene-co-acrylic acid); the polyesters being selected from poly(tetramethylene terephthalate) (PBT), poly(1,4-cyclohexylenedimethylene terephthalate) (PCDT), and poly(1,4-cyclohexylenedimethylene terephthalate) (PCDT) modified with up to about 10 percent by weight of poly(oxyethylene) glycol having a molecular weight of about 500 to about 2000.

Molding composition from polyester blends

Composition especially useful as an interlining adhesive comprising a blend of a polyester and a polyamide. The polyester is derived from at least about 40 moles percent terephthalic acid, has a melting point of between about 90.degree. C. and about 140.degree. C. and a heat of fusion of from about 0.1 to about 10 calories per gram. The polyamide has a melting point of between about 50.degree. C. and about 200.degree. C. Such a composition may be melt blended and cryogenically ground to a fine powder size and is resistant to blocking.

Adhesive composition

This invention relates to blends of substantially amorphous propylene/higher 1-olefin, 1-butene/higher 1-olefin, or propylene/1-butene/higher 1-olefin copolymers with tackifying resins which provide permanently tacky, low viscosity materials which have useful pressure-sensitive adhesive properties. The copolymers contain 40 to 60 mole % of one or more higher 1-olefins of the group 1-hexene, 1-heptene, 1-octene, 1-nonene and 1-decene and have a melt viscosity range of 10,000 to 75,000 cp. at 190.degree. C.

Blends of substantially amorphous higher 1-olefin copolymers and

Semi-crystalline polyester/low viscosity polyethylene melt blends, which are non-tacky and non-blocking and are more readily grindable by cryogenic grinding techniques, for providing powders suitable for powder adhesives particularly useful for fusible interlinings or for providing powder coating materials.

Polyester/low-viscosity polyethylene melt blends for powder adhesives or

Semi-crystalline polyester/low viscosity polyethylene melt blends, which are non-tacky and non-blocking and are more readily grindable by cryogenic grinding techniques, for providing powders suitable for powder adhesives particularly useful for fusible interlinings or for providing powder coating materials; and to the process for making the powder.

The invention relates to a process for the treatment of substantially amorphous polyolefins with peroxides at high temperatures to provide permanently tacky, low viscosity materials which have useful pressure-sensitive adhesive properties. These permanently tacky amorphous polyolefin homo- and copolymers, as well as blends of such amorphous polyolefins with crystalline polyolefins containing up to 20 weight percent crystalline polyolefin, are novel pressure-sensitive adhesives. These permanently tacky polymers are obtained, for example, by treating substantially amorphous polyolefins, such as amorphous polypropylene or amorphous propylene/1-butene copolymers, with peroxides at high temperatures.

Peroxide treated substantially amorphous polyolefins useful as

The invention relates to a process for the treatment of substantially amorphous polyolefin/hydrocarbon rubber blends with peroxides at high temperatures to provide permanently tacky, low viscosity materials which have useful pressure-sensitive adhesive properties. These permanently tacky blends are obtained, for example, by treating a blend of substantially amorphous polyolefins, such as amorphous polypropylene or amorphous propylene/1-butene copolymers, and a hydrocarbon rubber, with peroxides at high temperatures.

Peroxide treated substantially amorphous polyolefin/hydrocarbon rubber

This invention relates to single component, hot-melt, pressure-sensitive adhesives based on 1-butene/higher 1-olefin copolymers or 1-butene/propylene/higher 1-olefin copolymers containing 40-60 mole % of at least one higher 1-olefin. Suitable higher 1-olefins include 1-hexene through 1-decene. These new adhesives can be readily applied to substrates such as tape by means of conventional hot-melt coating equipment and thereby eliminate the solvent pollution problems associated with the application of current solvent-based pressure-sensitive adhesives. Our hot-melt coated tapes generally have pressure-sensitive adhesive properties at least equivalent to those of solvent coated pressure-sensitive tapes.

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Greeneville, TN, United States of America

Doyle A Weemes