Abstract: Unoriented polyester sheet materials and molded articles having a thickness of at least 10 mil and having excellent clarity and heat stability. The polyester used in the manufacture of the sheet materials and molded articles are derived from terephthalic acid and 1,4-butanediol and certain modifying monomers. Methods for manufacturing the aforesaid sheet materials and molded articles.

Abstract: Polyester resins usefurl for forming containers having improved resistance to gas permeability comprising the reaction product of(A) a dicarboxylic acid corresponding to the structure ##STR1## wherein X is hydrogen or unstubstituted alkyl containing 1-5 carbons and n is an integer in the range of 4 to 10, and(B) a diol selected from the group consisting of ethylene glycol, 1,4-butanediol and 1,4-cyclohexanedimethanol.

Abstract: Polyamide resins useful for forming containers having improved resistance to gas permeability comprising the reaction product of(A) a dicarboxylic acid corresponding to the structure ##STR1## wherein X is hydrogen or unsubstituted alkyl containing 1-5 carbons and n is an integer in the range of 4 to 10, and(B) a diamine containing 5 to 16 carbon atoms.

Abstract: Disclosed are multilayered sheets or films which have excellent adhesion. The sheets or film comprise a layer of copolyesterether or copolyester bonded to a layer of polyolefin by means of a tie layer of a copolymer of ethylene and at least one other unsaturated monomer.

Abstract: A polyamide for use in fabrication of containers having good oxygen barrier properties and a high heat deflection temperature. The polyamides are prepared from benzylsuccinic acids and piperazines.

Abstract: The present invention provides polyamide resins useful for forming containers having improved resistance to gas permeability. The containers are formed from a polyamide resin which comprises the reaction product of a diamine containing 2 to about 10 carbon atoms and a diacid component which comprises about 25 to 95 mole percent of a first diacid selected from 1,4-phenylenedioxy diacetic acid, 1,3-phenylenedioxy diacetic acid, 1,2-phenylenedioxy diacetic acid, and mixtures thereof, and about 5 to about 75 mole percent of a naphthalene dicarboxylic acid. The polyamide resin has an inherent viscosity of about 0.5 to 1.5. The containers which are provided by the present invention may be in the form of sheet, film, molded articles, such as bottles, and other such structures.

Abstract: The present invention provides polyester resins useful for forming containers having improved resistance to gas permeability. The containers are formed from a polyester resin which comprises the reaction product of a diol containing up to about 8 carbon atoms and a diacid component which comprises about 5 to 95 mole percent of oxydiacetic acid, and about 5 to about 95 mole percent of naphthalene dicarboxylic acid. The polyester resin has an inherent viscosity of about 0.5 to 1.5. The containers which are provided by the present invention may be in the form of sheet, film, molded articles, such as bottles, and other such structures.

Abstract: The present invention provides polyester resins useful for forming containers having improved resistance to gas permeability. The polyester resin comprises the reaction product of a diol containing up to about 8 carbon atoms and a diacid component which comprises terephthalic acid and oxydiacetic acid. The oxydiacetic acid is present in a concentration of about 5 to 50 mole percent, based upon the total amount of diacid. The polyester resin has an inherent viscosity of about 0.4 to 1.5. A preferred polyester is that derived from ethylene glycol, terephthalic acid, and about 10 to 40 mole percent oxydiacetic acid. The polyesters which are provided by the present invention may be formed into containers in the form of sheet, film, molded articles, such as bottles, and other such structures.

Abstract: Disclosed are polyesters prepared from hetero-atom-containing dicarboxylic acids and hetero-atom-containing diols. These polyesters have low permeability to oxygen and carbon dioxide and are useful in packaging applications such as for food and beverages.

Abstract: The present invention provides novel polyesteramides and containers having improved gas barrier properties formed therefrom. The novel polyesteramides comprise the reaction product of a diamine having 2 to about 20 carbon atoms, a diol containing up to about 24 carbon atoms, and a dicarboxylic acid component. The dicarboxylic acid component consists essentially of about 5 to 100 mole % of a specified first, heteroatom-containing dicarboxylic acid, and 0 to about 95 mole % of a second dicarboxylic acid containing up to about 24 carbon atoms. In the polyesteramide, the diamine component comprises about 10 to 90 mole % of the total diamine and diol components. The present invention further provides containers, such as molded containers, films, coextruded articles, laminated articles, etc., formed from the polyesteramides of the present invention.

Abstract: The present invention provides containers having unexpectedly superior gas barrier properties. The containers are formed from specified polyamides which comprise an aliphatic diamine and a diacid component which comprises a dicarboxylic acid containing a hetero atom.

Abstract: The present invention provides containers having improved resistance to gas permeability. The containers are formed from a polyester resin which comprises the reaction product of a diol containing up to about 8 carbon atoms and a diacid component which comprises terephthalic acid and a second diacid selected from iminodiacetic acid, oxydiacetic acid, thiodiacetic acid, and mixtures thereof. The second diacid is present in a concentration of about 1 to 50 mole percent, based upon the total amount of diacid. The polyester resin has an inherent viscosity of about 0.5 to 1.5. A preferred polyester is that derived from ethylene glycol, terephthalic acid, and oxydiacetic acid. The containers which are provided by the present invention may be in the form of sheet, film, molded articles, such as bottles, and other such structures.

Abstract: Disclosed are copolyesterethers having an inherent viscosity of from about 0.8 to about 1.5 comprisingA. a dicarboxylic acid component consisting essentially of 1,4-cyclohexanedicarboxylic acid having a trans isomer content of at least 70%, andB. a glycol component consisting essentially of(1) 1,4-cyclohexanedimethanol, and(2) from about 15 to about 50 weight percent, based on the weight of the polyesterether, of polytetramethyleneether glycol having a molecular weight of about 500 to about 1100,C. from about 0.1 to about 1.5 mole %, based on the mole % of the acid or glycol component, of a branching agent having at least three COOH or OH functional groups and from 3 to 60 carbon atoms,said copolyesterethers being characterized by having a die swell of between about -90% and about +100% and a minimum crystallization time of less than 2.5 minutes.

Abstract: Disclosed are copolyesterethers that can be formed into bottles, tubing, film and the like having improved clarity. The copolyetheresters have an inherent viscosity of from 0.8 to about 2.0 and compriseA. a dicarboxylic acid component consisting essentially of terephthalic acid and an aliphatic or cycloaliphatic acid, andB. a diol component comprising(1) at least 70 mole percent 1,4-butanediol, and(2) from about 10 to about 60 weight percent, based on the weight of the polyetherester, of polypropyleneether glycol having a molecular weight of 1700 to 2400.

Abstract: Disclosed is a method for producing a relatively high molecular weight copolyester which comprises the steps of(a) melt-phase copolymerizing to an inherent viscosity of about 0.50 to about 1.10 a dibasic acid component and a glycol component, the dibasic acid component consisting essentially of trans-1,4-cyclohexanedicarboxylic acid and the glycol component comprising, from about 97 to about 70 mol percent 1,4-cyclohexanedimethanol, about 3 to about 30 mol percent of a glycol having 2 to 5 carbon atoms and from about 15 to about 80 weight percent of the total polymer of a polyalkyleneether glycol, and(b) solid-phase polymerizing the copolyester from step (a) at a temperature of from about 110.degree. C. to about 200.degree. C. to a higher inherent viscosity of from about 0.60 to about 2.50, the higher inherent viscosity being at least 0.10 higher than the inherent viscosity reached in step (a).

Abstract: Disclosed are high melt strength, blow-moldable polymers that can be formed into bottles, tubing, film and the like. The polymers are copolyetheresters having an inherent viscosity of from 1.0 to about 2.5 comprisingA. a dicarboxylic acid component consisting essentially of 1,4-cyclohexanedicarboxylic acid, andB. a diol component comprising(1) at least 70 mole percent 1,4-cyclohexanedimethanol, and(2) from about 15 to about 60 weight percent, based on the weight of the polyetherester, of polypropyleneether glycol having a molecular weight of 1000 to 4000.

Abstract: A composition comprised of an admixture of poly-(tetramethylene terephthalate) and poly(tetramethylene terephthalate) modified with dimer acid. This composition exhibits enhanced flexural modulus and enhanced flexural strength compared with a poly(tetramethylene terephthalate) which has been modified with dimer acid and contains an amount of dimer acid equivalent to the admixture.

Abstract: Disclosed are polyesters composed of 1,4-cyclohexanedicarboxylic acid, terephthalic acid and 1,4-butanediol, wherein the 1,4-cyclohexanedicarboxylic acid is within a critical range of about 25 to about 58 mole percent. These polyesters exhibit desirable adhesive properties.

Abstract: Disclosed is a polyesterether having a critical range of poly(alkylene oxide) glycol. Articles molded from this polyesterether exhibit unobvious mold release characteristics.

Abstract: disclosed are compositions comprised of fine particles of unannealed poly(1,4-cyclohexylenedimethylene terephthalate) dispersed in a poly(tetramethylene terephthalate) type polyester, a poly(pentamethyleneterephthalate) type polyester, a poly(hexamethylene terephthalate) type polyester, a poly(1,4-cyclohexylenedimethylene terephthalate/isophthalate) type polyester, a poly(tetramethylene terephthalate) type polyester modified with poly(alkylene oxide)glycol, a poly(1,4-cyclohexylenedimethylene terephthalate) type polyester modified with poly(alkylene oxide) glycol or a polyester prepared from 1,4-cyclohexanedicarboxylic acid, dimer acid, and 1,4-cyclohexanedimethanol.