Abstract: Novel copolyetherester elastomer molding compositions are prepared from diols, diacids, poly(alkylene ether) glycol and caprolactone or polycaprolactone.

Abstract: High molecular weight, thermoplastic, randomly branched polycarbonates of an aromatic dihydric phenol, a carbonate precursor, and a chain branching agent comprising at least one compound selected from the formula: ##STR1## where A is selected from alkylene radicals from 1 to 6 carbons, alkylidene radicals from 2 to 6 carbons, cycloalkylene radicals and cycloalkylidene radicals containing from 4 to 6 carbon atoms;R and R' are independently selected from halogen radicals, monovalent hydrocarbon radicals of from 1 to 4 carbon atoms, and monovalent hydrocarbonoxy radicals of from 1 to 4 carbon atoms;n is an integer having a value of 0 or 1; andp and p' are integers having a value of 0 or 1.

Abstract: A transalkylation process for the preparation of dihydric phenols comprising reacting, in the presence of an acid or base catalyst, at least one mole of an aromatic monohydroxy compound such as a phenol with at least one mole of an aromatic dihydroxy compound such as a dihydric phenol, thereby forming at least one dihydric phenol which is different than said aromatic dihydroxy compound.

Abstract: An improved process for the preparation of aromatic carbonates selected from aliphatic aromatic carbonates, diaromatic carbonates, and mixtures thereof comprising reacting a phenolic compound with a dialiphatic carbonate or an aliphatic aromatic carbonate in the presence of a catalytic amount of at least one catalyst selected from polymeric tin compounds containing recurring structural units represented by the general formula ##STR1## wherein: R is selected from monovalent hydrocarbon radicals; andR.sup.1 is selected from monovalent hydrocarbon radicals.

Abstract: Linear thermoplastic polycarbonates derived from:(i) a carbonate precursor; and(ii) at least one dihydric phenol represented by the general formula ##STR1## wherein R is independently selected from hydrogen and lower alkyl radicals,X is selected from monocyclic cycloalkylidene radicals containing from 8 to about 16 ring carbon atoms, andn and n' are independently selected from whole numbers having a value of from 0 to 2 inclusive, with the proviso that the sum of n plus n' is at least one.

Abstract: Thermoplastic polymer exhibiting improved heat resistance comprised of the polymerized reaction products of (i) a carbonate precursor, and (ii) at least one dihydric phenol represented by the general formula ##STR1## wherein: R is independently selected from alkyl radicals;R.sup.1 is independently selected from monovalent hydrocarbon radicals;X is selected from cycloalkylidene radicals containing from 8 to about 16 ring carbon atoms;each n is two; andm represents a whole number having a value of from 0 up to the number of replaceable hydrogen atoms present on X.

Abstract: An improved process for the preparation of aromatic carbonates selected from aliphatic aromatic carbonates, diaromatic carbonates, and mixtures thereof comprising reacting at least one phenolic compound with at least one dialiphatic carbonate or at least one aliphatic aromatic carbonate in the presence of a catalytic amount of at least one transesterification catalyst represented by the general formula ##STR1## wherein: X is selected from Sn and Ti; andR is selected from monovalent hydrocarbon radicalsand monovalent hydrocarbonoxy radicals.

Abstract: Polycarbonates exhibiting improved heat distortion temperatures which are comprised of the polymerized coreaction products of (i) a carbonate precursor, and (ii) at least one particular spiro dihydric phenol. These carbonate polymers are useful in the production of molded articles, sheet glazing materials, and films.

Abstract: Aromatic copolyester-carbonates derived from a carbonate precursor, at least one difunctional carboxylic acid or a reactive derivative thereof, and at least one branched alkylidene dihydric phenol represented by the general formula ##STR1## wherein: R and R' are independently selected from halogen and monovalent hydrocarbon radicals;R.sup.1 and R.sup.3 are independently selected from hydrogen and alkyl radicals;R.sup.2 is selected from alkyl radicals, with the proviso that if R.sup.1 and R.sup.3 are both hydrogen then R.sup.2 is selected from branched alkyl radicals containing at least three carbon atoms; andn and n' are independently selected from whole numbers having a value of from 0 to 4 inclusive.These copolyester-carbonates are useful in making molded articles, films, and the like.

Abstract: Novel polycarbonates are provided which exhibit rubbery and elastomeric properties which are the polymerized reaction products of:(i) a carbonate precursor; and(ii) at least one dihydric phenol represented by the general formula ##STR1## wherein R is selected from straight chain alkyl radicals containing from 8 to about 30 carbon atoms;each R.sup.1 is independently selected from halogen monovalent hydrocarbon, and monovalent hydrocarbonoxy radicals;each R.sup.2 is independently selected from halogen, monovalent hydrocarbon, and monovalent hydrocarbonoxy radicals; andn and n' are independently selected from whole numbers having a value of from 0 to 4 inclusive.

Abstract: Novel copolyester-carbonates exhibiting improved processability comprised of the polymerized reaction products of (i) at least one dihydric phenol, (ii) at least one difunctional carboxylic acid or a reactive derivative thereof, (iii) a carbonyl halide carbonate precursor, and (iv) a processability improving amount of at least one particular bishaloformate.

Abstract: Novel heat resistant polycarbonates are provided which are the polymerized reaction products of:(i) a carbonate precursor; and(ii) at least one dihydric phenol selected from dihydric phenols represented by the general formulae ##STR1## wherein: each R.sup.1 is independently selected from halogen radicals, monovalent hydrocarbon radicals, and monovalent hydrocarbonoxy radicals;each R.sup.2 is independently selected from halogen radicals, monovalent hydrocarbon radicals, and monovalent hydrocarbonoxy radicals;R.sup.4 and R.sup.5 are independently selected from monovalent hydrocarbon radicals;R.sup.3 is selected from hydrogen and monovalent hydrocarbon radicals, with the proviso that if R.sup.3 is a hydrogen radical than at least one of the monovalent hydrocarbon radicals represented by R.sup.4 and R.sup.5 contains at least two carbon atoms;R.sup.7 is selected from hydrogen and monovalent hydrocarbon radicals;R.sup.

Abstract: Novel polyphenolic compounds are disclosed. These compounds have utility as branching agents in the production of novel, randomly branched polycarbonates.

Abstract: A flame retardant non-opaque polycarbonate composition consisting essentially of, in admixture:(i) at least one halogen-free and sulfur containing aromatic polycarbonate resin derived from(a) at least one halogen-free and sulfur-free non-polycyclic dihydric phenol,(b) from about 4 to about 25 mole percent of at least one halogen-free thiodiphenol, based on the total amount of said halogen-free and sulfur-free non-polycyclic dihydric phenol and said halogen-free thiodiphenol employed, and(c) a carbonate precursor; and(ii) from about 0.001 to about 0.5 parts by weight per hundred parts by weight of said polycarbonate resin of at least one organic metal salt of sulfonic acid selected from the alkali and alkaline earth metal salts of sulfonic acids.

Abstract: Copolyester-carbonates having amide and carbamate terminal groups. These copolyester-carbonates are prepared by reacting (i) a carbonate precursor, (ii) at least one difunctional carboxylic acid or an ester forming reactive derivative thereof, (iii) at least one dihydric phenol, and (iv) a chain terminating amount of at least one carbamate-amide precursor. These copolyester-carbonates exhibit improved thermal stability.

Abstract: Copolyester-carbonate resins exhibiting improved processability which are derived from:(i) at least one diester-diol which is the coreaction product of an aromatic hydroxy carboxylic acid or an ester forming reactive derivative thereof and a diol;(ii) at least one dihydric phenol;(iii) at least one bishaloformate; and(iv) a carbonyl halide carbonate precursor.

Abstract: Novel carbonate polymers exhibiting improved processability comprised of the polymerized reaction products of (i) at least one dihydric phenol, (ii) a carbonyl halide carbonate precursor, and (iii) at least one specific bishaloformate. The bishaloformate is selected from bishaloformates represented by the general formulae ##STR1## wherein: X is independently selected from chlorine and bromine radicals;R is selected from alkylene radicals, cycloalkylene radicals, and divalent hydrocarbon radicals;R.sup.3 and R.sup.4 are independently selected from alkylene radicals; andZ is selected from the following divalent radicals ##STR2## the --(R.sup.6).sub.d --Ar--(R.sup.7).sub.e --radical wherein Ar represents a divalent mono-, di- or polynuclear aromatic residue, R.sup.6 and R.sup.

Abstract: Flame retardant and drip-retardant polycarbonate compositions exhibiting good thick section impact comprised of, in physical admixture:(i) at least one halogen-free and sulfur-containing polycarbonate resin derived from (a) at least one halogen-free, sulfur-free and non-polycyclic dihydric phenol, (b) at least one halogen-free thiodiphenol, and (c) a carbonate precursor; and(ii) fibrous glass.These compositions contain an amount of said fibrous glass and an amount of said thiodiphenol effective to render said compositions flame retardant and drip retardant.

Abstract: Copolyester-carbonate resin compositions exhibiting improved processability comprised of (i) at least one copolyester-carbonate resin derived from (a) a carbonate precursor; (b) at least one difunctional carboxylic acid or a reactive derivative thereof; and (c) at least one dihydric phenol wherein the bridging divalent hydrocarbon group connecting the two aromatic residues is represented by the general formula ##STR1## wherein R represents a straight chain alkyl radical containing from 1 to 5 carbon atoms.

Abstract: Thermoplastic aromatic copolyester-carbonate resin exhibiting improved processability derived from:(i) at least one monoester-diol which is the coreaction product of (a) at least one aromatic hydroxy carboxylic acid or an ester forming reactive derivative thereof, and (b) at least one diol selected from aliphatic diols, aliphatic ether diols, and aromatic diols;(ii) at least one dihydric phenol; and(iii) a carbonyl halide carbonate precursor.