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: Block condensation copolymers with improved processability, low temperature impact strength and solvent resistance have a polysiloxane block such as ##STR1## where D is about 10 to 120, and a polycarbonate-aliphatic polyester block. Such polymers are made by an interfacial reaction of phosgene with a bisphenol, a phenol-terminated siloxane, and an aliphatic dicarboxylic acid salt.

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: A thermoplastic article having on the outer surface thereof a protective layer having in admixture a trihydricphenol-benzotriazole ultra violet light absorber and a thermoplastic resin preferably a polycarbonate. The protective layer may be coated on the thermoplastic substrate or it may be co-extruded with the thermoplastic substrate.

Abstract: UV stabilized polycarbonates are provided having chemically combined polyhydric phenol benzotriazole carbonate units, such as 1,1-bis(4-hydroxyphenyl)-1-[4-hydroxy-3-(N-2-benzotriazole)phenyl]ethane carbonate units and methods for making. Incorporation of the polyhydric phenol benzotriazole functional units into the polycarbonate backbone can be achieved by redistribution or transesterification under melt polymerization conditions.

Abstract: A composition comprising a copolyestercarbonate derived from a dihydric phenol, a carbonate precursor, and an aliphatic alpha omega dicarboxylic acid or ester precursor wherein the dicarboxylic acid or ester precursor has from 10 to about 20 carbon atoms, inclusive, and is present in the copolyestercarbonate in quantities of from about 2 to 30 mole percent of the dihydric phenol.

Abstract: It is possible to manufacture articles out of thermoplastic materials and to metallize the articles at their surface. In this way one can manufacture reflectors and similar articles. Most thermoplastic materials require extra processing steps prior to the metallization like application of primers, chemical etching and the like.The invention is based on the discovery that a certain type of materials can be metallized without any extra processing steps. The materials involved are polyestercarbonates or blends of polyestercarbonates and polycarbonate. This is quite surprising since polycarbonates can not be metallized in good quality without extra processing steps prior to the metallization step.

Abstract: A process for preparing a polyestercarbonate copolymer which is nearly devoid of diaryl-carbonates and that exhibits a glass transition temperature lower than bisphenol-A carbonate homopolymer, and that shows improved processability is herein described. 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.

Abstract: A reduced glass transition temperature copolyester-carbonate which displays non-Newtonian melt behavior was synthesized by using bisphenol-A, a dicarboxylic acid and a trisphenol. The branched copolymer was obtained by interfacial phosgenation. One of the compositions described displays a Tg of about 127.degree. C. and twice the melt flow index of a branched polycarbonate of corresponding molecular weight or intrinsic viscosity.

Abstract: A polymeric composition having aromatic polycarbonate or aromatic polycarbonate like properties which process at significantly lower temperatures than aromatic polycarbonate in admixture with an additive which is incompatible with an aromatic polycarbonate at standard processing temperature.

Abstract: A composition comprising a copolyestercarbonate derived from a dihydric phenol, a carbonate precursor, and an aliphatic alpha omega dicarboxylic acid or ester precursor wherein the dicarboxylic acid or ester precursor has from 10 to about 20 carbon atoms, inclusive, and is present in the copolyestercarbonate in quantities of from about 2 to 30 mole percent of the dihydric phenol.

Abstract: A compound of the formula ##STR1## wherein R is a hydrocarbon of three to about 50 carbon atoms and the residue of the reaction of triol R(OH).sub.3 with the anhydride of Formula II;Y is CR.sub.5 R.sub.6, O,S,NCH.sub.3 wherein R.sub.5 and R.sub.6 are the same or different and are hydrogen, alkyl of one to three carbon atoms, inclusive, or phenyl;x is O or 1;R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are the same or different and are selected from the group consisting of hydrogen, phenyl or aliphatic of one to about twenty carbon atoms, inclusive, and R.sub.2 and R.sub.4 joined together form a normal alkylene or alkenylene chain of two to about six carbon atoms, inclusive, unsubstituted or substituted with one to six alkyl groups having from one to about four carbon atoms, inclusive.a process to make the compounds;and branched aromatic carbonate polymers having incorporated therein in the branching component a compound of the above formula.

Abstract: A polymeric composition having aromatic polycarbonate or aromatic polycarbonate like properties which process at significantly lower temperatures than aromatic polycarbonate in admixture with an additive which is incompatible with an aromatic polycarbonate at standard processing temperature.

Abstract: An improved method for the preparation of crosslinked polycarbonates comprises the reaction at elevated temperature of a composition containing cyclic polycarbonate oligomers with at least one polyglycidyl acrylate copolymer formed by the reaction of at least one olefinic compound with a glycidyl acrylate monomer. Further disclosed are network polycarbonates wherein the carbonate chains are linked to each other via polyglycidyl acrylate copolymer groups, and prepreg compositions which comprise a filler and a mixture of cyclic polycarbonate oligomers with a polyglycidyl acrylate copolymer.

Abstract: An improved method for the preparation of crosslinked polycarbonates comprises the reaction at elevated temperature of a composition containing cyclic polycarbonate oligomers with at least one polyglycidyl acrylate copolymer formed by the reaction of at least one olefinic compound with a glycidyl acrylate monomer. Further disclosed are network polycarbonates wherein the carbonate chains are linked to each other via polyglycidyl acrylate copolymer groups, and prepreg compositions which comprise a filler and a mixture of cyclic polycarbonate oligomers with a polyglycidyl acrylate copolymer.

Abstract: A composition comprisinga. an aromatic copolyestercarbonate comprising from about 2 to 30 mole percent ester content of an alpha omega aliphatic dicarboxylic acid ester having from about 8 to 20 carbon atoms, inclusive, admixed withb. an inert filler in sufficient quantities to increase the flexural modulus of copolyestercarbonate.

Abstract: A process for preparing a copolyestercarbonate which comprises reacting interfacially a dihydric phenol, a carbonate precursor, and a saturated aliphatic alpha omega dicarboxylic acid having from 9 to about 40 carbon atoms wherein the said diacid is from about 2 to about 20 mole percent based on the dihydric phenol reactant content and wherein the initial pH is from about 8 to about 9 for about 70 to about 95% of the carbonate precursor addition time period time period and is then raised to a final pH of from about 10 to 12 for the remainder of the carbonate precursor addition time period.

Abstract: A process which comprises reacting interfacially a dihydric phenol, a carbonate precursor and a prior prepared salt of an aliphatic alpha omega dicarboxylic acid having from 8 to about 20 carbon atoms thereby producing a copolyestercarbonate.

Abstract: Macrocyclic oligomers, including polycarbonates, polyesters, polyamides, polyimides, polyetherketones and polyethersulfones, are conveniently prepared from various spiro(bis)indane compounds, especially the 6,6'-difunctional 3,3',3'-tetramethylspiro(bis)indanes. The macrocyclic oligomers may be conveniently converted to linear polymers.

Abstract: Macrocyclic oligomers, including polycarbonates, polyesters, polyamides, polyimides, polyetherketones and polyethersulfones, are conveniently prepared from various spiro(bis)indane compounds, especially the 6,6'-difunctional 3,3',3'-tetramethylspiro(bis)indanes. The macrocyclic oligomers may be conveniently converted to linear polymers.