摘要:
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.
摘要:
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.
摘要:
Flame retardant and non dripping copolyestercarbonate compositions comprised of, in admixture:
(i) a fluorinated polyolefin; and (ii) at least one halogen-free sulfur containing copolyester-carbonate resin derived from (a) a carbonate precursor, (b) at least one halogen-free, sulfur-free and non-polycyclic dihydric phenol, (c) at least one halogen-free thiodiphenol, and (d) at least one difunctional carboxylic acid or a reactive derivative thereof.
摘要:
Segment-ester polycarbonates have improved resistance to high heat distortion when portions of the polymer contain units derived from 4,4'-cyclohexylidenediphenol and derivatives thereof. Preferred high heat distortion segment-ester polycarbonates include the copolyestercarbonate with segments derived from isophthalic acid and 4,4'-cyclohexylidenediphenol and/or terephthalic acid and 4,4'-cyclohexylidenediphenol. Films made of the segment-ester copolycarbonates have improved resistance to high heat distortion.
摘要:
Aromatic polycarbonates derived from a carbonate precursor and at least one branched alkylidene dihydric phenol, wherein branching in the alkylidene radical occurs at a carbon atom which is at least one carbon atom removed from the benzylic carbon atom bridging the two phenolic residues.
摘要:
Flame retardant, non-dripping polycarbonate compositions exhibiting good thick section impact comprised of, in admixture: (i) a minor amount of a fluorinated polyolefin; and (ii) a carbonate copolymer based on the reaction products of (a) a carbonate precursor, (b) at least one halogen-free and sulfur free dihydric phenol, and (c) at least one halogen-free thiodiphenol.
(i) at least one diester-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.
摘要:
Flame retardant, non-dripping polycarbonate compositions exhibiting good thick section impact comprised of, in admixture:
(i) a minor amount of a fluorinated polyolefin; and (ii) a carbonate copolymer based on the reaction products of (a) a carbonate precursor, (b) at least one halogen-free and sulfur free dihydric phenol, and (c) at least one halogen-free thiodiphenol.
摘要:
Aromatic polycarbonates derived from a carbonate precursor and at least one branched alkylidene dihydric phenol, wherein branching in the alkylidene radical occurs at a carbon atom which is at least one carbon atom removed from the benzylic carbon atom bridging the two phenolic residues.