Eastman-kodak Company

Eastman Chemical Company

Eastman Kodak

Ronald R Light

Robert W Seymour

Louis Thomas Germinario

Steven Lee Stafford

Wayne Ken Shih

Emerson Eston Sharpe, Jr

Gether Irick, Jr

Frederick B Joyner

James W Mercer, Jr

John R Dombroski

Freddie A Shepherd

Theodore F Gray, Jr

Hawkins, James M

Polyesters and polyester containers having a reduced coefficient of friction and improved clarity are produced using an antiblock agent comprising a dried talc having from about 20 to about 300 ppm water or a fatty acid tethered talc. The use of these talcs result in polyesters and polyester containers having a coefficient of less than about 1.0 and a clarity with haze values of less than about 4%.

Polyesters and polyester containers having a reduced coefficient of friction and improved clarity

Polyesters and polyester containers having a reduced coefficient of friction and improved clarity are produced using an antiblock agent comprising a dried talc having from about 20 to about 300 ppm water or a fatty acid tethered talc. The use of these talcs results in polyesters and polyester containers having a coefficient of less than about 1.0 and a clarity with haze values of less than about 4%.

The invention provides a biodegradable polymer composition comprising a biodegradable polymer and a phenol-containing compound mixed with the polymer. The phenol-containing compound is present in the biodegradable polymer at an amount sufficient to slow the degradation rate of the biodegradable polymer. The invention also pertains to a method for slowing the degradation rate of a biodegradable polymer.

Methods for slowing the degradation rate of biodegradable polymers and biodegradable polymer compositions and compositions thereof

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.

Plasticized polyester for shrink film applications

Plasticized polyesters for shrink film applications

This invention relates to a polymer blend comprising:

Polyester/polycarbonate/polycaprolactone blends

Disclosed is a polymer blend having excellent clarity and impact strength which is suitable for use in extrusion blow molding processes comprising

Polymer blends useful for forming extrusion blow molded articles

Disclosed is glass fiber reinforced thermoplastic sheet material suitable for various compression molding applications. The glass fibers useful in this invention are described in detail, and the thermoplastic composition is poly(ethylene terephthalate), poly(cyclohexylene dimethylene terephthalate) or a blend of either of these polyesters with each other and/or polycarbonate.

Reinforced polymeric sheet material

This invention concerns blends of poly(ethylene terephthalate), poly(ethylene naphthalate) and a compatibilizing amount of a copolyester which comprises (1) an acid component comprising repeating units of from about 10 to about 20 mole % terephthalic acid and about 80 to about 90 mole % naphthalenedicarboxylic acid, and (2) a glycol component comprising repeating units of ethylene glycol. Clear containers containing less than 10% haze produced from such blends are useful for a variety of packaging applications, particularly hot-fill food and beverage containers where good barrier and clarity are needed.

Tricomponent polymer blends of poly(ethylene tereptholate),

Compatible tricomponent polymer blends

A glass fiber reinforced poly(ethylene terephthalate) resin, comprising:

Injection moldable glass fiber reinforced polyester with improved

Disclosed are reinforced polyester molding compositions comprising poly(ethylene terephthalate), glass fibers, at least one sodium or potassium salt of a hydrocarbon carboxylic acid or an ionic hydrocarbon copolymer of an .alpha.-olefin, an .alpha.,.beta.-ethylenically unsaturated carboxylic acid and a primary linear polymeric alcohol having the structure CH.sub.3 (CH.sub.2).sub.x CH.sub.2 OH where x has an average value of 28-48.

Reinforced polyester molding compositions

Disclosed are polyester blends and articles produced therefrom, wherein the blends contain copolyester material comprising one or a mixture of copolyesters such as that prepared from ethylene glycol and 1,4-cyclohexanedimethanol in certain molar proportions with terephthalic acid, blended in certain proportions with poly(ethylene isophthalate). Formed amorphous articles such as bottles, films and sheets of these blends unexpectedly are clear and show marked reduction in carbon dioxide permeability, e.g., about 20-40% lower than predicted, and have good oxygen and water vapor barrier properties. The blends are especially useful in food packaging applications such as carbonated drink bottles, where good gas and water vapor barrier properties are highly desirable.

Copolyester/polyester blends having reduced carbon dioxide permeability

Disclosed are polyester compositions having special utility in film or sheet form having improved gas and water barrier properties, and comprising homo- or copolyesters derived from terephthalic acid or mixtures of terephthalic acid with acids such as isophthalic, 2,6-naphthalene dicarboxylic, and the like, and a glycol component such as ethylene glycol or 1,4-cyclohexanedimethanol, blended with from about 1 to about 30 weight % of certain bisphenols such as bisphenol-A, and naphthalene diols. Films or sheets of these compositions are characterized by having greatly reduced oxygen, carbon dioxide and water vapor permeabilities.

Thermoplastic polyester compositions having improved barrier properties

Blended composition of cellulose ester and a copolyacrylate having improved notched Izod impact strength and excellent visual clarity; the cellulose ester being selected from cellulose acetate butyrate and cellulose acetate propionate; and the copolyacrylate including about 5 to about 20 parts per hundred parts resin of a copolymer containing about 45 to about 55% by weight butyl acrylate and about 55 to about 45% by weight methyl acrylate.

Growing community of inventors

Kingsport, TN, United States of America

Ronald R Light