Abstract: Methods for making a branched polycarbonate-polysiloxane copolymer are provided. An interfacial mixture comprising water, an organic solvent, a polyhydric branching agent, a non-siloxane-containing dihydroxy compound, an endcapping agent, a phase transfer catalyst, and a base is formed. The base and the branching agent are dissolved in the mixture before the non-siloxane-containing dihydroxy compound is added and the interfacial mixture has a basic pH. A first carbonate precursor is added to the interfacial mixture while maintaining the pH at from about 3 to about 9 to form a branched polycarbonate mixture. Next, the pH is increased to from about 8 to about 13 and a siloxane oligomer is added to the branched polycarbonate mixture. The branched polycarbonate mixture is then reacted to form the branched polycarbonate-polysiloxane copolymer.

Abstract: Methods for making a branched polycarbonate are disclosed. An interfacial mixture comprising water, a substantially water-immiscible organic solvent, a dihydroxy compound, a polyhydric branching agent, an endcapping agent, a catalyst, and a base is formed. The base and the branching agent are dissolved in the mixture before the dihydroxy compound is added, and the interfacial mixture has a basic pH. The mixture is reacted by adding a carbonate precursor to the mixture while maintaining the pH between about 8 and about 10 to form the branched polycarbonate. The resulting branched polycarbonates may contain more than 1.5 mole % of the THPE; have residual chloride content of 20 ppm or less; and a weight average molecular weight of about 55,000 or less. They may also be highly transparent.

Abstract: A polycarbonate such as aliphatic/aromatic polycarbonate comprises repeating structural carbonate units of the formula (H-1): in which Rh is a radical having the formula (H-2): wherein each of R11, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R22, R23, R24, R25, R26, R27, and R28 is independently a hydrogen, a C1-C6 alkyl group, or a halogen substituted C1-C6 alkyl group. The polycarbonate, and a thermoplastic composition thereof, have improved thermal stability, cost-effectiveness, and exhibit improved manufacturability such as, for example, minimum cyclic carbonate formation and minimum amine acceptor requirement.

Abstract: A copolycarbonate of the formula wherein 5 to 50 mole percent of the total number of R1 groups is derived from a monomer of formula (2) wherein each Rf is independently at each occurrence a halogen atom, a hydrocarbon group having 1 to 10 carbons, or a halogen substituted hydrocarbon group having 1 to 10 carbons, and n is 0 to 4; and 50 to 95 mole percent of the R1 groups are derived from a dihydroxy compound of formula HO—R5—OH, wherein at least 60% of the R5 groups are aromatic, and the dihydroxy compound of formula (3) is not a compound of formula (2), and wherein the copolycarbonate comprises at least 10% fewer carbonate linkages of formula (4) than would be theoretically obtained in a random copolymer made from the same ratio of the monomer of formula (2) and the dihydroxy compound of formula (3).

Abstract: A copolycarbonate-polyester, comprising units of formula wherein at least 60 percent of the total number of R1 groups are divalent aromatic organic radicals and the balance thereof are divalent aliphatic or alicyclic radicals; units of formula wherein T is a C7-20 divalent alkyl aromatic radical or a C6-20 divalent aromatic radical, and D is a divalent C6-20 aromatic radical; and units of the formula wherein R2 and R3 are each independently a halogen or a C1-6 alkyl group, R4 is a methyl or phenyl group, each c is independently 0 to 4, and T is as described above.

Abstract: A copolycarbonate-polyester, comprising units of formula wherein at least 60 percent of the total number of R1 groups are divalent aromatic organic radicals and the balance thereof are divalent aliphatic or alicyclic radicals; units of formula wherein T is a C7-20 divalent alkyl aromatic radical or a C6-20 divalent aromatic radical, and D is a divalent C6-20 aromatic radical; and units of the formula wherein R2 and R3 are each independently a halogen or a C1-6 alkyl group, R4 is a methyl or phenyl group, each c is independently 0 to 4, and T is as described above. A method of making a copolycarbonate-polyester is also disclosed.

Abstract: Disclosed herein is a process for preparing a polymer comprising structural units derived from polycyclic dihydroxy compound having Formula (I), wherein R1 is selected from the group consisting of a cyano functionality, a nitro functionality, an aliphatic functionality having 1 to 10 carbons, an aliphatic ester functionality having 2 to 10 carbons, a cycloaliphatic ester functionality having 4 to 10 carbons and an aromatic ester functionality having 4 to 10 carbons; R2 is selected from the group consisting of a cyano functionality, a nitro functionality, an aliphatic ester functionality having 2 to 10 carbons, a cycloaliphatic ester functionality having 4 to 10 carbons and an aromatic ester functionality having 4 to 10 carbons; and each R3 and R4, at each occurrence, can be the same or different and are independently at each occurrence an aliphatic functionality having 1 to 10 carbons or a cycloaliphatic functionality having 3 to 10 carbons, “n” is an integer having a value 0 to 4 and “m” is an integer ha

Abstract: A copolycarbonate is discloses, comprising units of the formula (1) wherein 70 to 99.5 mole percent of the total number of R1 groups are derived from a dihydroxy compound of formula (2) wherein R2 and R3 are each independently a halogen or a C1-6 alkyl group, R4 is a methyl or a phenyl group, and c is independently 0 to 4; and 0.5 to 30 mole percent of the total number of R1 groups are derived from a dihydroxy compound of formula (3) HO—R5—OH??(3) wherein at least 60% of the R5 groups are aromatic, and the dihydroxy compound of formula (3) is not the same as the dihydroxy compound of formula (2), and wherein the copolycarbonate has a glass transition temperature of 250° C. or higher.

Abstract: A copolycarbonate of the formula wherein 5 to 75 mole percent of the total number of R1 groups is derived from a high Tg monomer of formula (2) wherein R2 and R3 are each independently a halogen or a C1-6 alkyl group, R4 is a methyl or phenyl, and c is 0 to 4; and 25 to 95 mole percent of the R1 groups are derived from a dihydroxy compound of formula HO—R5—OH, wherein at least 60% of the R5 groups are aromatic, and the dihydroxy compound of formula (3) is not the same as the high Tg monomer of formula (2), and wherein the copolycarbonate comprises at least 10% fewer carbonate linkages of formula (4) than would be theoretically obtained in a random copolymer made from the same ratio of the high Tg monomer of formula (2) and the dihydroxy compound of formula (3).

Abstract: A polymer comprises structural units derived from a polycyclic dihydroxy compound of Formula (I) wherein R1 is selected from the group consisting of a cyano functionality, a nitro functionality, an aliphatic functionality having 1 to 10 carbons, an aliphatic ester functionality having 2 to 10 carbons, a cycloaliphatic ester functionality having 4 to 10 carbons and an aromatic ester functionality having 4 to 10 carbons; R2 is selected from the group consisting of a cyano functionality, a nitro functionality, an aliphatic ester functionality having 2 to 10 carbons, a cycloaliphatic ester functionality having 4 to 10 carbons and an aromatic ester functionality having 4 to 10 carbons; and R3 and R4 are independently at each occurrence a hydrogen, an aliphatic functionality having 1 to 10 carbons or a cycloaliphatic functionality having 3 to 10 carbons.

Abstract: Disclosed herein is a process for preparing a polymer comprising structural units derived from polycyclic dihydroxy compound having Formula (I), wherein R1 is selected from the group consisting of a cyano functionality, a nitro functionality, an aliphatic functionality having 1 to 10 carbons, an aliphatic ester functionality having 2 to 10 carbons, a cycloaliphatic ester functionality having 4 to 10 carbons and an aromatic ester functionality having 4 to 10 carbons; R2 is selected from the group consisting of a cyano functionality, a nitro functionality, an aliphatic ester functionality having 2 to 10 carbons, a cycloaliphatic ester functionality having 4 to 10 carbons and an aromatic ester functionality having 4 to 10 carbons; and each R3 and R4, at each occurrence, can be the same or different and are independently at each occurrence an aliphatic functionality having 1 to 10 carbons or a cycloaliphatic functionality having 3 to 10 carbons, “n” is an integer having a value 0 to 4 and “m” is an integer h

Abstract: Disclosed herein are polysiloxane-polycarbonate copolymer articles. In one embodiment, a ?th inch thick bar formed from the thermoplastic composition has a B-Y ratio of less than or equal to about 1.75. This article, which has a dimension that is greater than or equal to 1.5 cm, comprises the thermoplastic composition which comprises a polysiloxane-polycarbonate copolymer, wherein the copolymer comprises repeating diorganosiloxane units of formula (1): wherein each R is, independently, a C1-13 monovalent organic group; and E has an average value of 20 to 35.

Abstract: A copolycarbonate of the formula wherein 5 to 50 mole percent of the total number of R1 groups is derived from a monomer of formula (2) wherein each Rf is independently at each occurrence a halogen atom, a hydrocarbon group having 1 to 10 carbons, or a halogen substituted hydrocarbon group having 1 to 10 carbons, and n is 0 to 4; and 50 to 95 mole percent of the R1 groups are derived from a dihydroxy compound of formula HO—R5—OH, wherein at least 60% of the R5 groups are aromatic, and the dihydroxy compound of formula (3) is not a compound of formula (2), and wherein the copolycarbonate comprises at least 10% fewer carbonate linkages of formula (4) than would be theoretically obtained in a random copolymer made from the same ratio of the monomer of formula (2) and the dihydroxy compound of formula (3).

Abstract: A polycarbonate such as aliphatic/aromatic polycarbonate comprises repeating structural carbonate units of the formula (H-1): in which Rh is a radical having the formula (H-2): wherein each of R11, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R22, R23, R24, R25, R26, R27, and R28 is independently a hydrogen, a C1-C6 alkyl group, or a halogen substituted C1-C6 alkyl group. The polycarbonate, and a thermoplastic composition thereof, have improved thermal stability, cost-effectiveness, and exhibit improved manufacturability such as, for example, minimum cyclic carbonate formation and minimum amine acceptor requirement.

Abstract: A copolycarbonate of the formula wherein 5 to 75 mole percent of the total number of R1 groups is derived from a high Tg monomer of formula (2) wherein R2 and R3 are each independently a halogen or a C1-6 alkyl group, R4 is a methyl or phenyl, and c is 0 to 4; and 25 to 95 mole percent of the R1 groups are derived from a dihydroxy compound of formula HO—R5—OH, wherein at least 60% of the R5 groups are aromatic, and the dihydroxy compound of formula (3) is not the same as the high Tg monomer of formula (2), and wherein the copolycarbonate comprises at least 10% fewer carbonate linkages of formula (4) than would be theoretically obtained in a random copolymer made from the same ratio of the high Tg monomer of formula (2) and the dihydroxy compound of formula (3).

Abstract: A copolycarbonate is discloses, comprising units of the formula (1) wherein 70 to 99.5 mole percent of the total number of R1 groups are derived from a dihydroxy compound of formula (2) wherein R2 and R3 are each independently a halogen or a C1-6 alkyl group, R4 is a methyl or a phenyl group, and c is independently 0 to 4; and 0.5 to 30 mole percent of the total number of R1 groups are derived from a dihydroxy compound of formula (3) HO—R5—OH??(3) wherein at least 60% of the R5 groups are aromatic, and the dihydroxy compound of formula (3) is not the same as the dihydroxy compound of formula (2), and wherein the copolycarbonate has a glass transition temperature of 250° C. or higher.

Abstract: A copolycarbonate-polyester, comprising units of formula wherein at least 60 percent of the total number of R1 groups are divalent aromatic organic radicals and the balance thereof are divalent aliphatic or alicyclic radicals; units of formula wherein T is a C7-20 divalent alkyl aromatic radical or a C6-20 divalent aromatic radical, and D is a divalent C6-20 aromatic radical; and units of the formula wherein R2 and R3 are each independently a halogen or a C1-6 alkyl group, R4 is a methyl or phenyl group, each c is independently 0 to 4, and T is as described above.

Abstract: A polycarbonate comprises structural units derived from a polycyclic dihydroxy compound of Formula (I) wherein R1 is selected from the group consisting of a cyano functionality, a nitro functionality, an aliphatic functionality having 1 to 10 carbons, an aliphatic ester functionality having 2 to 10 carbons, a cycloaliphatic ester functionality having 4 to 10 carbons and an aromatic ester functionality having 4 to 10 carbons; R2 is selected from the group consisting of a cyano functionality, a nitro functionality, an aliphatic ester functionality having 2 to 10 carbons, a cycloaliphatic ester functionality having 4 to 10 carbons and an aromatic ester functionality having 4 to 10 carbons; and R3 and R4 are independently at each occurrence a hydrogen, an aliphatic functionality having 1 to 10 carbons or a cycloaliphatic functionality having 3 to 10 carbons.

Abstract: A method for preparing an aliphatic chloroformate comprising, introducing a mixture of at least one aliphatic hydroxyl compound, phosgene, at least one solvent, and optionally at least one organic base into a flow reactor to obtain a unidirectional flowing reaction mixture. The at least one aliphatic hydroxyl compound comprises at least one aliphatic hydroxyl group. The unidirectional flowing reaction mixture is maintained at a temperature between about 0° C. and about 60° C. to produce a single product stream comprising an aliphatic chloroformate.

Abstract: Copolymers of BPA, BPT-1 and BPT-2, can be used as a modifier to enhance the thermal properties of a BPA polymer. A single copolymer modifier can be used in differing amounts to produce a product with desired thermal properties. Thus, polycarbonate can be made by combining a bisphenol A polycarbonate and a BPA/BPT-1/BPT-2 copolymer modifier, and mixing the combined materials to form a blend. By adjusting the relative amounts and the properties of the bisphenol A polycarbonate and BPA/BPT-1/BPT-2 copolymer, the glass transition temperature and the toughness of the blend can be selected. Suitable BPA/BPT-1/BPT-2 copolymers contain BPT-1 and BPT-2 in a ratio, BPT-1/BPT-2, in the range of 70/30 to 10/90, preferably less than or equal to 50/50, for example around 30/70.