Abstract: Copolymers are prepared by the interaction of a melt mix comprising a high molecular weight poly(alkylene arylate) resin with a high molecular weight polycarbonate or polyester carbonate and a catalyst, such as diphenyl phosphate. The copolymers are tough and are useful as molding compounds and are capable of maintaining dimensional stability at temperatures approaching their singale glass transition temperature. The copolymers are characterized by having substantially no content of polyester homopolymer and a ratio of arylate linkages to dihydric phenol arylate linkages of not substantially less than 20:1.

Abstract: Polymers of the formula: ##STR1## wherein X is selected from the group consisting of halogen, hydroxyl and alkoxy and n is an integer such that the polymer has a weight average molecular weight within the range of from 5,000 to 30,000 are useful to prepare a wide variety of block copolymer resins such as polycarbonate - polyisobutylene block copolymer.

Abstract: Novel poly(imide-siloxane) block copolymers and a process for their preparation are disclosed. The process of this invention involves reacting a hydroxy-terminated polyimide oligomer with a siloxane oligomer, which has reactive end groups capable of displacement by reaction with the hydroxyl groups of the hydroxy-terminated polyimide oligomer.

Abstract: An amorphous polyamide having a high heat distortion temperature is produced by reacting toluenediamine with isophthalic acid, and optionally terephthalic acid, in the presence of either an aliphatic diacid, an aliphatic diamine or a mixture thereof. The polyamide provides the combined properties of a high heat distortion temperature, low shrinkage upon cooling, high levels of chemical resistance, is processable at temperatures below its degradation temperature, and has a high flexural modulus. With these combined properties the polyamide is particularly suitable for fiber reinforced automotive applications requiring exposure to excessive heat in conventional automotive paint bake ovens.

Abstract: Poly(carbonate-siloxane) copolymers having reduced tendencies to burn are provided by the addition of an aromatic sulfone sulfonate thereto. These materials find utility in electrical applications.

Abstract: Block copolymers which include polyisobutylene chain moieties of the formula: ##STR1## wherein n is an integer such that the moiety has a molecular weight contribution of from 5,000 to 30,000 Daltons as determined by gel permeation chromatography are obtained by block copolymerization of appropriate compounds of the formula: ##STR2## wherein n is as defined above and X represents hydroxyl, halogen or alkoxy, with polycarbonates, polyesters, polyamides, poly(ester-amides), polyarylates, polyetherimides or monomer precursors thereof. The block copolymers are useful thermoplastic molding compositions.

Abstract: An amorphous polyamide resin is provided having the combined properties of a high glass transition temperature and excellent oxygen barrier properties. The polyamide is obtained from the reaction products of para-xylylene diamine, adipic acid and isophthalic acid, and finds particular utility as a container layer for hot fill packaging of fruit juices.

Abstract: 1,4"-(bishalophenylsulfone)terphenyl and polymers therefrom are provided. The polymers exhibit high heat distortion temperatures, and high levels of chemical resistance and thermo-oxidative stability. The polymers are useful as molding compositions for making molded articles.

Abstract: The present invention relates to a wholly aromatic polyetherimide further containing sulfur containing groups in the backbone of the polyetherimide. The polyetherimide is characterized by extremely high glass transition temperatures, high chemical resistance and thermogravimetric stability.

Abstract: Polycarbonate resins are chain-terminated with a group selected from those of the formula: ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are each independently selected from the group consisting of hydrogen, halogen, hydrocarbyl of from 1 to 12 carbon atoms, inclusive; and halogen-substituted hydrocarbyl of 1 to 12 carbon atoms, inclusive; R.sub.1 is attached to a ring carbon atom at one of the 4, 5 or 6 positions; and R.sub.2 and R.sub.3 when taken together represent the divalent moiety of formula: --CH.dbd.CH.sub.2 --CH.sub.2 .dbd.CH--which effectively creates an additional fused aromatic ring structure. The resins exhibit a low plate-out when processed thermally.

Abstract: A method for recovering a dihydric phenol from scrap polyester which comprisesa. contacting an aromatic polyester selected from the group consisting of polycarbonate, copolyestercarbonate and a polyarylate with(1) an aqueous ammoniacal solution of sufficient strength of sever the ester bonds of the aromatic polyester and(2) an alkylchloride in which the polyester is at least partially soluble,b. forming two mobile liquid phases, the top phase being aqueous and the bottom phase being the alkyl chloride and containing ammonium dihydric phenolate;c. separating the top phase from the bottom phase;d. recovering from the bottom phase the dihydric phenol.

Abstract: An aromatic ester carbonate resin comprised of:(i) at least one recurring structural unit represented by the formula ##STR1## (ii) at least one recurring structural unit selected from structural units represented by the formulae ##STR2## or mixtures thereof; and (iii) at least one recurring structural unit represented by the formula ##STR3## (iv) at least one recurring structural unit selected from structural units represented by the formulae ##STR4## or mixtures thereof; wherein R is independently selected from halogen, monovalent hydrocarbon radicals, or monovalent hydrocarbonoxy radicals,W is selected from divalent hydrocarbon radicals, ##STR5## A is the divalent residue of at least one polymerized conjugated alkadiene and has a weight average molecular weight of at least about 600,m is independently selected from integers having a value of from 0 to 4, andb is either zero or one, andwherein B is the divalent residue of an ester precursor.

Abstract: Polymers of the formula: ##STR1## wherein X is selected from the group consisting of halogen, hydroxyl and alkoxy and n is an integer such that the polymer has a weight average molecular weight within the range of from 5,000 to 30,000 are useful to prepare a wide variety of block copolymer resins such as polycarbonate-polyisobutylene block copolymer.

Abstract: Polycarbonate resins are chain-terminated with a group selected from those of the formula: ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are each independently selected from the group consisting of hydrogen, halogen, hydrocarbyl of from 1 to 12 carbon atoms, inclusive; and halogen-substituted hydrocarbyl of 1 to 12 carbon atoms, inclusive; R.sub.1 is attached to a ring carbon atom at one of the 4, 5 or 6 positions; and R.sub.2 and R.sub.3 when taken together represent the divalent moiety of formula:--CH.dbd.CH.sub.2 --CH.sub.2 .dbd.CH--which effectively creates an additional fused aromatic ring structure. The resins exhibit a low plate-out when processed thermally.

Abstract: A process for making thermoplastic polyimides which involves reacting an aromatic dianhydride with an organic diamine in the presence of a tertiary amine in an inert solvent to form a polyamide acid salt; separating the polyamide acid salt from the solvent; and heating the polyamide acid salt under imidization conditions to form the desired polyimide.

Abstract: The intrinsic viscosity of a high molecular weight aromatic polycarbonate resin is reduced and the melt processability is concomitantly enhanced by the inclusion of a small amount of a fatty acid or acids. The mixture of polymer and acid is more readily extrudable, without detriment to other desirable physical and chemical properties.

Abstract: High molecular weight thermoplastic aromatic carbonate resin exhibiting improved impact properties comprised of the polymerized reaction products of:(i) at least one dihydric phenol;(ii) a carbonate precursor; and(iii) an amount effective to improve the impact properties of said resin of at least one polymer represented by the formula ##STR1## wherein A represents a divalent residue of at least one polymerized and partially hydrogenated conjugated alkadiene monomer and has a weight average molecular weight of at least about 600, and X is independently selected from halogen radicals.

Abstract: Described herein are curable molding compositions comprising a mixture of:(a) a poly(acrylate) characterized by the following empirical formula: ##STR1## wherein R is the hydroxy-free residue of an organic polyhydric alcohol which contained alcoholic hydroxyl groups bonded to different carbon atoms, R.sub.1 and R.sub.2 are independently hydrogen or methyl, and n is 1 to 3,(b) acrylic or methacrylic acid or a functionalized derivative thereof having a molecular weight of less than 300 which is different from (a), and(c) an ethylenically unsaturated monomer which is soluble in and copolymerizable with (a) and (b) and which is different from (a) and (b). The compositions can also contain one or more fibers with a melting point or a glass transition temperature above about 130.degree. C.

Abstract: An aromatic carbonate resin comprised of:(i) at least one recurring structural unit represented by the formula ##STR1## (ii) at least one recurring structural unit selected from structural units represented by the formulae ##STR2## wherein R is independently selected from halogen, monovalent hydrocarbon, and monovalent hydrocarbonoxy radicals;W is selected from divalent hydrocarbon radicals, --O--, --S--, --S--S--, ##STR3## A is a divalent residue of at least one conjugated alkadiene and has a weight average molecular weight of at least about 600,m is independently selected from integers having a value of from 0 to 4, andb is either zero or one.The carbonate resin contains an amount of (ii) at least effective to improve the impact properties thereof.

Abstract: New heat resistant, thermoplastic copoly)ester-carbonates) based on 3-methyl-4-hydroxy-benzoic acid are disclosed. The copolymers exhibit higher glass transition temperatures due to the presence of the 3-methyl substituent on the benzoate units of the polymer. They are useful in the preparation of thermoplastic engineering compositions for extrusion or molding into shaped articles.