Abstract: A polyestercarbonate copolymer blend which exhibits a glass transition temperature lower than bisphenol-A carbonate homopolymer, shows improved processability and fire-retardancy. The desired lower Tg and improved flow can be achieved by the polycondensation of a dihydric phenol and aliphatic dicarboxylic acid. The condensate is polymerized with a carbonate forming reagent. The resin is fire-retarded with a mixture of halogenated polycarbonate, potassium diphenylsulfone sulfonate and polytetrafluoroethylene.

Abstract: A composition comprisinga. about 10 to 90 weight-percent of an aromatic polycarbonate in admixture withb. about 90 to 10 weight percent of copolyestercarbonate having repeating units of the structure ##STR1## wherein: R is independently selected from halogen, monovalent hydrocarbon, and monovalent hydrocarbonoxy radicals;R.sup.1 is independently selected from halogen, monovalent hydrocarbon, and monovalent hydrocarbonoxy radicals;W is selected from divalent hydrocarbon ##STR2## radicals, n and n.sup.1 are independently selected from integers having a value of from 0 to 4 inclusive;b is either zero or one;X is an alkylene group of about 6 to 18 carbon atoms, inclusive;d is from about 2 to 30 mole percent of the total units c+d; anda and b calculated as weight percent of a plus b.

Abstract: Novel compositions with high impact strength in both thin and thick-walled sections, and good weld line strength at room temperatures are provided in the form of resinous mixtures comprising:(A) an aromatic carbonate polymer resin selected from the group consisting of(i) an aromatic polycarbonate resin,(ii) a poly(ester-carbonate) copolymer resin, and(iii) a mixture of (i) and (ii); and(B) an impact modifier combination therefor comprising(i) a polyester resin selected from the group consisting of(a) a poly(alkyene terephthalate) resin, when (A) is (i) or (iii); and(b) an amorphous copolyester copolymer resin, and(c) a mixture of (a) and (b); and(ii) a diene based, grafted core-shell copolymer.

Abstract: A four-component blend of an aromatic carbonate polymer, a styrene-acrylonitrile copolymer, a methacrylate-diene-styrene shell-core copolymer and polybutylene terephthalate exhibits good shear thinning characteristics and weldline strength, as well as other favorable mechanical properties.

Abstract: A composition comprising an admixture ofa. a major quantity of an aromatic polycarbonate andb. a minor quantity ofi. a polycarbonate polysiloxane block copolymer; andii. a hydrogenated alkylidene vinyl aromatic block copolymer graft modified with an unsaturated dicarboxylic acid or unsaturated dicarboxylic acid anhydride,wherein the quantities of b are such that the 1/4 inch impact resistance of a molded part and the organic solvent resistance is improved over polycarbonate alone while maintaining the compatibility of the composition of a and b.

Abstract: A composition comprising an admixture of(a) an aromatic polycarbonate of intrinsic viscosity of from about 0.35 to about 0.41 dl/g, measured in methylene chloride at about 25.degree. C., said aromatic polycarbonate chain terminated with an endcapping agent which provides the polycarbonate with improved ductility and higher Tg when compared to a paratertiary butyl phenol encapped polycarbonate of the same intrinsic viscosity;(b) a core/shell copolymer comprising a conjugated diene with a Tg of less than or equal to -10.degree. C. as the core, said core being about 50 to 90 wt.

Abstract: Polycarbonate blends with a VO rating by underwriters laboratory Bulletin 94 (UL-94), together with good strength and processing characteristics are obtained by blending an aromatic carbonate polymer, an ABS copolymer, a tetrabromobisphenol A polycarbonate and a flame retardant sulfonate salt.

Abstract: A low gloss thermoplastic blend is produced by blending an aromatic polycarbonate with a very high rubber ABS made by emulsion polymerization.

Abstract: A low gloss thermoplastic with good physical properties comprises a blend of a polycarbonate with ABS and a gloss-reducing amount of a glycidyl methacrylate copolymer.

Abstract: Blends of aromatic carbonate polymers with glycidyl methacrylate grafts on ethylene-propylene-diene modified elastomer (EPDM) further modified by reaction with an epoxy acrylate have low glass as well as improved impact strength and strong weldlines.

Abstract: An aromatic carbonate resin composition exhibiting improved impact properties comprised of:(i) at least one aromatic carbonate resin;(ii) at least one effective amount of at least one impact modifier; and(iii) an amount effective to improve the impact properties of (i) and (ii) but insufficient to substantially deleteriously affect, to a substantial degree, most of the advantageous properties thereof of at least one aliphatic sulphonate.

Abstract: A low-gloss thermoplastic blend contains an aromatic carbonate polymer, strength-improving additivies such as an elastomeric block copolymer and a core-shell acrylic polymer, and a gloss-reducing glycidyl (meth)acrylate polymer.

Abstract: An aromatic carbonate resin composition comprising:(i) at least one aromatic carbonate resin; and(ii) a copolyetherester comprised of a multiplicity of long chain ester units and short chain ester units joined head-to-tail through ester linkages, said long chain ester units being comprised of the reaction products of a dicarboxylic acid or its derivative and a poly(alkylene oxide)glycol, and said short chain ester units being comprised of the reaction products of a dicarboxylic acid or its derivative and at least one low molecular weight diol.The compositions contain an amount of said copolyetherester effective to improve the melt flow or processability of the aromatic carbonate resin. The instant compositions may optionally contain an impact modifying amount of at least one impact modifying compound. The instant compositions are useful in the preparation of extruded or molded shaped articles.

Abstract: A composition comprising an aromatic polycarbonate having a number average molecular weight of from about 6,000 to about 12,000 in admixture with(a) at least 3 weight percent of a polymer selected from the group consisting of a random block copolymer having polycarbonate block(s) and diorganosiloxane block(s); and a block copolymer of a vinylaromatic and an alkadiene;(b) a flame retardant package comprising a flame retardant salt, said package in quantities sufficient to achieve V.sub.0 or V.sub.1 in a part 93 mils thick; and(c) said composition having an exterior gloss of less than about 80 as measured by a Gardner Glossmeter at 60.degree. gloss.

Abstract: A process which comprises mixing a melt of an amorphous aromatic polyester with a melt of a carboxy terminated polyacrylate oligomer, said oligomer having a number average molecular weight of from about 500 to about 10,000.

Abstract: An aromatic carbonate resin composition comprising:(i) at least one aromatic carbonate resin;(ii) at least one polyolefin;(iii) at least one fluorinated polyolefin; and(iv) at least one silicone fluid;components (ii)-(iv) being present in amounts which are effective to improve the wear resistance of said aromatic carbonate resin.

Abstract: Thermoplastically moldable polycarbonate resins are improved by the blending therewith a thermoplastically moldable polyurethane characterized by high impact resistance, high flexural modulus, and a heat deflection temperature of at least 50.degree. C. at 18.6 Kg/cm.sup.2. Impact modifiers can also be present.

Abstract: The melt flow of polycarbonate resin molding compositions is improved by the addition of an ethylene-vinyl acetate copolymer, without adversely affecting the impact strength of articles molded from the improved composition.

Abstract: Difficult to mold polyester resin containing compositions are made thermoplastically moldable by the addition of an aromatic polycarbonate and mold releasable by the addition of mold-release additives which are monomeric polyesters of a polyol and a fatty acid having from 14 to 36 carbon atoms, inclusive.

Abstract: Difficult to mold polyester resin containing compositions are made thermoplastically moldable by the addition of an aromatic polycarbonate and mold-release additives of the formula:R-Ywherein R is selected from saturated and unsaturated hydrocarbyl having 13 to 44 carbon atoms, inclusive; and Y is selected from monovalent moieties of the formulae:--H, --COOR', and --O--R"wherein R' is selected from hydrogen and hydrocarbyl of 1 to 36 carbon atoms, inclusive; and R" represents one of lower alkyl and lower alkenyl.