Abstract: Disclosed are new poly(ether-carbonates) which may be prepared by heating aromatic diol polycarbonates with ethylene carbonate, optionally in the presence of a suitable catalyst or promoter.

Abstract: Disclosed are blends of polyesters of terephthalic acid, trans-4,4'-stilbenedicarboxylic acid, and bisphenol A polycarbonate. The polymers are compatible, and blends prepared from these polymers have excellent impact strength and are useful as molding plastics, fibers, and films.

Abstract: 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.

Abstract: Disclosed are polyesters derived from one or more aromatic dicarboxylic acids and a diol which includes at least 50 mol percent of 2,3-butanediol. The polyesters, prepared by the use of a tin catalyst, are high molecular weight polymers having an inherent viscosity of at least 0.4.

Abstract: 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.

Abstract: A high molecular weight polyester suitable for use in forming shaped articles, the polyester having an inherent viscosity of greater than 0.4 and containing repeating units from a glycol component consisting essentially of 1,3-cyclohexanedimethanol, 1,4-cyclohexanedimethanol or mixtures thereof, and an acid component comprising at least 50 mole % of an alicyclic or aromatic dicarboxylic anhydride or corresponding acid having 6 to 30 carbon atoms.

Abstract: Disclosed is a process for the preparation of polyesters from aromatic dicarboxylic acids or derivatives thereof and diols containing vicinal hydroxyl groups at least one of which is secondary. The use of a tin catalyst results in the formation of polyesters having I.V.'s of at least about 0.4 when the diol has two secondary hydroxyl groups and at least about 0.7 when the diol has only one secondary hydroxyl group.

Abstract: Disclosed is a process for the preparation of high molecular weight polyesters comprising reacting substantially equimolar amounts of an acid component comprising at least one alicyclic or aromatic dicarboxylic anhydride or corresponding dicarboxylic acid with 1,3- or 1,4-cyclohexanedimethanol, at a temperature between about 110.degree. C. and about 180.degree. C. in a solvent, azeotropically removing water from the reaction mixture while condensing solvent vapor and returning it to the reaction mixture, and recovering the polyester after an inherent viscosity of at least 0.4 has been attained.

Abstract: The polyesters of 95 to 40 mol % terephthalic acid, 5 to 60 mol % trans-4,4'-stilbenedicarboxylic acid, and at least 60 mol % 1,4-cyclohexanedimethanol can be injection molded to give shaped objects having exceptionally high impact strength and good chemical resistance. In addition, the polyesters of this invention can be extruded into films, spun into fibers, or blown into bottles having these properties.

Abstract: 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.

Abstract: Copolyesters of poly(ethylene terephthalate) modified with greater than 10 to about 40 mol % trans-4,4'-stil-benedicarboxylic acid can be melt spun to give as-spun fibers with exceptionally low shrinkage at elevated temperatures and with tensile strengths and moduli equivalent to those of fully oriented poly(ethylene terephthalate). They may be drafted to give fibers with tenacities >8 g/den and moduli >150 g/den. In addition to the unobviously high tenacities and moduli of as-spun fibers, oriented shaped articles, such as films and bottles, of copolyesters of this invention have lower gas permeabilities than poly(ethylene terephthalate). For example, the oxygen permeability of these copolyesters is 25 to 50% lower than that of poly(ethylene terephthalate).

Abstract: A new process for foaming cellulose acetate rods consists of blending the cellulose acetate with a suitable plasticizer, a nucleating agent, cyclic ethylene carbonate, and a co-reactant for the ethylene carbonate and extruding into a foamed rod. Suitable co-reactants include aromatic diol polyesters, polycarbonates, and poly(ester-carbonates) and monomeric or polymeric materials containing the ##STR1## group, which have melting or flow points of less than about 250.degree. C.

Abstract: The present invention provides substantially difunctional hydroxyl-terminated polyether-esters and a process for preparing the same. The process comprises reacting ethylene carbonate with a substituted or unsubstituted epsilon-caprolactone in the presence of a catalytic amount of a specified catalyst at a temperature of at least about 200.degree. C. The catalyst comprises an alkali metal salt, a quaternary ammonium salt, or a mixture thereof. The products of the invention are pourable liquid urethane-forming polyols at room temperature.

Abstract: This invention relates to polyesters of high molecular weight useful as films, fibers and molding plastics. It is particularly concerned with copolyesters comprising repeating units from trans-4,4'-stilbenedicarboxylic acid, optionally 0-40 mol % of terephthalic acid or 2,6-naphthalenedicarboxylic acid, and 1,2-propanediol, the polyesters having an inherent viscosity of about 0.3 or more and a flexural modulus of at least 900,000 psi.This invention is also concerned with copolyesters comprising repeating units of trans-4,4'-stilbenedicarboxylic acid, at least 10 mol % of one or more components selected from the group consisting of an aromatic dicarboxylic acid, aliphatic dicarboxylic acid or aliphatic glycol, and 1,3-propanediol. The polyesters have unobviously low gas permeability properties.

Abstract: 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.

Abstract: The polyesters of trans-4,4'-stilbenedicarboxylic acid and 1,4-butanediol modified with 20 to 80 mol % terephthalic acid and/or 20 to 80 mol % of 2,6-naphthalenedicarboxylic acid can be injection-molded to give plastics, extruded into films or spun into fibers to give shaped objects with high strength.

Abstract: This invention relates to polyesters of high molecular weight useful as films, fibers and molding plastics. It is particularly concerned with copolyesters comprising repeating units from trans-4,4'-stilbenedicarboxylic acid, optionally 0-40 mol % of terephthalic acid or 2,6-naphthalenedicarboxylic acid, and 1,2-propanediol, the polyesters having an inherent viscosity of about 0.3 or more and a flexural modulus of at least 900,000 psi.

Abstract: Copolyesters of poly(ethylene 2,6-naphthalenedicarboxylate) modified with about 15 to 45 mol % trans-4,4'-stilbenedicarboxylic acid can be injection molded to give polymers with tensile strengths up to 32,000 psi and moduli up to 1,250,000 psi. As-spun or drawn fibers and films of poly(ethylene 2,6-naphthalenedicarboxylate) modified with as little as 10 mol % trans-4,4'-stilbenedicarboxylic acid have improved modulus compared with unmodified poly(ethylene 2,6-naphthalenedicarboxylate). The copolyesters have properties superior to those of poly(ethylene terephthalate).

Abstract: This invention relates to a process for the preparation of thermoplastic polymers. Specifically it relates to a process for the preparation of a substantially linear, high molecular weight phenoxy resin from substituted hydroquinone, less than 80 mole percent of hydroquinone and optionally up to about 20 mole percent of a second aromatic diol, epichlorohydrin (or another epihalohydrin) and a base, such as sodium hydroxide.Hydroquinone phenoxy resins of this invention are characterized by low permeability to oxygen and carbon dioxide and are, therefore, useful as a gas-barrier layer in multilayer plastic film constructions used in food packaging and beverage bottle applications, for example. For use in such applications, the resin is generally in the form of a thin, uniform film prepared by extrusion, casting, or other such method.

Abstract: 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.