Eastman-kodak Company

Herbert F Kuhfuss

Winston J Jackson, Jr

Cephas H Sloan

Gerald P Morie

Gary G Gebeau

Joseph J Watkins

Willis C Wooten, Jr

Disclosed is a process for preparing poly(ester-amides) by aminolysis of polyesters and glycol esters with diamines or aminoalcohols and then polycondensation. This process is thus useful in the production of poly(ester-amides) which find application in the production of fibers, films, sheets, molded objects, and other products.

Process for preparing poly(ester-amides)

Poly(urea-amides) having an inherent viscosity (I.V.) of 0.4 to about 1.2, and having the repeating units ##STR1## wherein with respect to the total moles of II and III, the mol % of II is 5 to 80, preferably 20 to 60, and conversely the mol % of III is 20 to 95, preferably 40 to 80, R is straight chain alkylene of 3 to 10 carbons, preferably 4 carbons, with the proviso that when R contains 3 carbons, not over 50 mol % thereof is present, up to 40 mol %, preferably 0 mil % of R is aromatic, and wherein up to 30 mol %, preferably 0 mol % of I is the para isomer, the remainder being the meta isomer, are valuable for the manufacture of plastics, fibers, films and other shaped objects, especially multilayer laminated structures which have excellent resistance to the transmission of oxygen, carbon dioxide, and other gases.

Poly(urea-amide) from m-xylylenediamine

Disclosed are linear, high molecular weight unsaturated polyesters prepared by reacting essentially equimolar amounts of an acid selected from maleic acid, maleic anhydride or fumaric acid and cyclohexanedimethanol at temperatures of less than about 200.degree. C. until an I.V. of about 0.5 is reacted.

High molecular weight unsaturated polyesters of cyclohexanedimethanols

Poly(ester-amides) derived from piperazine, aliphatic acids, and aliphatic glycols. The poly(ester-amides) are particularly useful as coextrudable adhesive resins for use in fabricating multilayer packaging materials, both sheet and pipe forms, comprising polyesters and ethylene/vinyl alcohol copolymers.

Poly(ester-amide) compositions

Copolyesters of terephthalic acid, phenylhydroquinone and 25 to 50 mole percent hydroquinone based on total moles of diol. These copolyesters are characterized by unexpected chemical resistance.

Copolyester derived from terephthalic acid, phenylhydroquinone and

Disclosed are crystalline polyesters having low melt viscosities and thermosetting compositions comprising these polyesters. The compositions are especially useful as powder coatings. The polyesters are derived from 1,4-butanediol and trans-1,4-cyclohexanedicarboxylic acid. The polyesters are characterized as having a molecular weight of about 700-3000, a melt viscosity of about 50-3500 cps at 160.degree. C. and a hydroxyl number of about 35-160. The thermosetting composition contains a curing agent which is reactive with the hydroxyl groups to crosslink the polyester.

Thermosetting powder coating compositions

Thermoplastic copolyester compositions prepared from combination of a bisphenol A polyester and a copolyester of poly(ethylene terephthalate) modified with 1,4-cyclohexanedimethanol. The compositions are characterized by excellent melt processability, high impact strength, and flexural modulus that is higher than that of either of the polymers used in the preparation of the thermoplastic copolyester compositions.

Copolyesters derived from aromatic polyesters and glycol polyesters

Provess for improving the chemical resistance of copolyesters derived from aromatic dicarboxylic acids, certain substituted aromatic diols and, optionally, aromatic hydroxy acids. The process involves treating shaped objects made from the aromatic polyesters by subjecting them to a temperature sufficient to raise the surface temperature thereof to at least 275.degree. C. and preferably 300.degree. C. in air or other oxygen-containing atmospheres.

Process for improving the chemical resistance of aromatic polyesters

Disclosed is a process for preparing linear, high molecular weight copolyesters from either (A) polyesters or copolyesters, the acid component of which consists of at least 70 mole percent terephthalic acid and the diol component of which consists of at least 70 mole percent ethylene glycol or (B) copolyesters, the acid component of which consists of at least 70 mole percent terephthalic acid and the diol component of which consists of at least 70 mole percent of a mixture of ethylene glycol and 1,4-cyclohexanedimethanol in a mole ratio of from 20:80 to 97:3, the process comprising heating the polymer in the presence of 1,4-cyclohexanedimethanol to glycolize the polymer, distilling out ethylene glycol from the glycolysis mixture, and polycondensing the glycolysis mixture to form a copolyester of which at least a portion of ethylene glycol units are replaced by 1,4-cyclohexanedimethanol units. The process provides a fast polymerization rate and the polymers so produced can be used in the manufacture of plastics, fibers, films and other shaped objects having good physical properties.

Process for preparing high molecular weight copolyesters

Disclosed are liquid crystal copolyesters having excellent mechanical properties. The copolyesters are prepared from an aromatic dicarboxylic acid, phenylhydroquinone and a p-acyloxybenzoic acid.

Liquid crystal copolyesters containing phenylhydroquinone

Copolyesters of terephthalic acid, phenylhydroquinone and 25 to 65 mole percent t-butylhydroquinone based on total moles of diol. These copolyesters are characterized by high melting points, good melt processability, high heat resistance and high oxidative stability. The copolyesters are useful for the manufacture of melt-spun fibers, extruded films and injection molded articles.

Copolyesters derived from terephthalic acid, phenylhydroquinone and

This invention concerns fibers of amorphous polyesters of terephthalic acid or an ester forming derivative thereof and from about 60 mole percent to 100 mole percent 1,2-propylene glycol and from 0 to about 40 mole percent ethylene glycol. These fibers are useful for the production of bonded coherent cigarette filters, nonwoven fabrics and the like.

Fibers filter rods and other nonwoven articles made from

Disclosed are poly(ester-amides) prepared from an aromatic dicarboxylic acid, ethylene glycol and a p-acylaminobenzoic acid. These poly(ester-amides) contain the following divalent radicals: ##STR1##

Poly(ester-amides)prepared from an aromatic dicarboxylic acid, ethylene

Fibers, filter rods and other nonwoven articles made from

Disclosed is a liquid crystal copolyester having unobviously high mechanical properties. The copolyester is prepared from an aromatic dicarboxylic acid, a substituted phenylhydroquinone and optionally other hydroquinones.

Growing community of inventors

Kingsport, TN, United States of America

Herbert F Kuhfuss