scispace - formally typeset
Search or ask a question

Showing papers on "Polycarbonate published in 1994"


Journal ArticleDOI
TL;DR: In this paper, the infusion of CO 2 solutions of styrene into a variety of semicrystalline and amorphous polymers (polychlorotrifluoroethylene, poly(4-methyl-1-pentene), HDPE, nylon 66, polyoxymethylene and Bisphenol A polycarbonate) and thermally radical polymerizations within the swollen substrates to generate polystyrene-substrate polymer blends are described.
Abstract: This paper describes the infusion of CO 2 solutions of styrene into a variety of semicrystalline and amorphous polymers (polychlorotrifluoroethylene, poly(4-methyl-1-pentene), HDPE, nylon 66, polyoxymethylene and Bisphenol A polycarbonate) and thermally radical polymerizations within the swollen substrates to generate polystyrene-substrate polymer blends

182 citations


Journal ArticleDOI
TL;DR: A series of four polycarbonates derived from the ethyl, butyl, hexyl, and octyl esters of desaminotyrosyl-tyrosine was prepared by condensation polymerization, and their chemical structure was confirmed by elemental analysis, nuclear magnetic resonance, and Fourier transform infrared spectroscopy.
Abstract: A series of four polycarbonates derived from the ethyl, butyl, hexyl, and octyl esters of desaminotyrosyl-tyrosine was prepared by condensation polymerization. The resulting polymers had weight average molecular weights ranging from 120,000-450,000, and their chemical structure was confirmed by elemental analysis, nuclear magnetic resonance, and Fourier transform infrared spectroscopy. The polycarbonates were evaluated as degradable biomaterials. Their surface properties were determined by electron spectroscopy for chemical analysis, attenuated total reflectance-Fourier transformed infrared spectroscopy, and contact angle measurement. The degree of surface hydrophobicity was related to the length of the alkyl ester pendent chain. The tensile properties were dependent on the chemical structure of the polymers: For thin, solvent cast film specimens, the tensile modulus varied from 1.2-1.6 GPa, and the strength at break from 60-220 MPa. The degradation of polymeric films was followed in vitro by measuring changes in mechanical strength for up to 40 weeks, and the decrease in molecular weight and changes in surface chemistry for up to 80 weeks. The length of the pendent chain affected the degradation behavior and strength retention; the polymers with short pendent chains were more readily hydrolyzable. For sterilization, ethylene oxide treatment was less destructive, as judged by molecular weight retention, than gamma-irradiation. Spin-cast films of all tested polycarbonates were not cytotoxic toward cultured rat lung fibroblasts. The cell response was influenced by the chemical structure of the polymer. The least hydrophobic polycarbonate (having a short ethyl ester pendent chain) was a more stimulating substrate for cell growth than the more hydrophobic polymers (carrying longer alkyl ester pendent chains).

177 citations


Journal ArticleDOI
TL;DR: The phase behavior and miscibility of poly(e-caprolactone) (PCL)/polycarbonate (PC) blends have been investigated with DSC, cloud-point measurement, TGA, STIR, NMR, and SANS.
Abstract: The phase behavior and miscibility of poly(e-caprolactone) (PCL)/polycarbonate (PC) blends have been investigated with DSC, cloud-point measurement, TGA, STIR, NMR, and SANS. Thermal analysis results indicated that the PCL-rich blends are semicrystalline/semicrystalline at room temperature. At about 30% PC incorporation, the PCL crystallinity showed a marked reduction, whereas the PC crystallinity approached a maximum. The composition dependence of T g exhibited a discontinuity (cusp) and was critically analyzed using the classical equations of Gordon-Taylor and Fox and the free volume theory of Braun-Kovaca

123 citations


Patent
22 Dec 1994
TL;DR: In this article, a mixture of silicone-modified polycarbonate and organopolysiloxane derived units is used to obtain a flame-retardant poly-carbonate resin compsn.
Abstract: PURPOSE: To obtain a flame-retardant polycarbonate resin compsn. excellent in flame retardance, etc., by compounding a specific mixture comprising a silicone-modified arom. polycarbonate resin and an arom. polycarbonate with a specified amt. of an org. alkali or alkaline earth metal salt. CONSTITUTION: 1-100wt.% silicone-modified arom. polycarbonate obtd. by the copolymn. using 0.1-20wt.% organopolysiloxane having a basic structure represented by the formula (wherein R 1 , R 2 , and R 3 are each a 1-12C hydrocarbon group or a monovalent org. group having a hydroxyl group; and 0≤a≤0.75, 0≤b≤1, 0≤c≤0.5, and 0≤d≤0.25 provided a+b+c+d=1) as a comonomer is mixed with 99-0wt.% arom. polycarbonate, giving a resin component contg. 0.1wt.% or higher organopolysiloxane-derived units. 100 pts.wt. the resin component is compounded with 0-1 pt.wt. org. alkali metal salt (e.g. sodium perfluoromethanesulfonate) and/or org. alkaline earth metal salt, giving a flame- retardant polycarbonate resin compsn. COPYRIGHT: (C)1996,JPO

122 citations



Journal ArticleDOI
TL;DR: In this paper, the authors analyzed the effect of polymer-penetrant interactions and polymer backbone structure on the temperature dependence of the transport and sorption properties of gases in membrane separation processes.
Abstract: The permeabilities and solubilities of five gases are reported for bisphenol-A polycarbonate (PC), tetramethyl polycarbonate (TMPC), and tetramethyl hexafluoro polycarbonate (TMHFPC) at temperatures up to 200°C. The temperature dependence of permselectivity is discussed in terms of solubility and diffusivity selectivity changes with temperature for CO2/CH4 and He/N2 gas separations. The activation energies for permeation and diffusion and the heats of sorption are also reported for each gas in the three polycarbonates. Analysis of these values provides a better fundamental understanding of the effect of polymer-penetrant interactions and polymer backbone structure on the temperature dependence of the transport and sorption properties of gases in membrane separation processes. Important factors affecting the solubility and diffusivity selectivity losses or gains with increased temperature are also identified through correlation of these data with physical properties of the gases and polymers. These conclusions provide a framework for choosing the most promising membrane materials for particular gas separations at elevated temperatures. © 1994 John Wiley & Sons, Inc.

112 citations


Journal ArticleDOI
TL;DR: In this article, a modified version of the Dreiding force field was used in simulations of Bisphenol A polycarbonate, 4,4'-isopropylidenediphenylbis(phenyl carbonate).
Abstract: Molecular simulations of Bisphenol A polycarbonate were performed using a modified version of the Dreiding force field. In general, the simplicity of this generic force field was maintained. However, a few parameters were optimized by using ab initio calculations in order to generate better backbone torsional potentials. The validity of this modified force field was tested on a model compound similar to polycarbonate, 4,4'-isopropylidenediphenylbis(phenyl carbonate). The crystallographic data obtained from simulations of the model compound agreed well with the experimental data. The modified force field was then used in simulations of the glassy polymer

111 citations


Patent
21 Jul 1994
TL;DR: In this paper, a method for making silicone polycarbonate block copolymers and polycarbonates blends thereof having reduced haze is provided, which is effected by using a phase transfer catalyst to generate poly carbonate oligomers having at least one terminal haloformate group followed by the late addition of hydroxyaryl terminated polydiorganosiloxane.
Abstract: A method is provided for making silicone polycarbonate block copolymers and polycarbonate blends thereof having reduced haze. Silicone polycarbonate block copolymer formation is effected by using a phase transfer catalyst to generate polycarbonate oligomers having at least one terminal haloformate group followed by the late addition of hydroxyaryl terminated polydiorganosiloxane.

86 citations


Journal ArticleDOI
01 Jul 1994-Polymer
TL;DR: In this paper, the deformation behavior of EPDM-modified polycarbonate blends (PC/EPDM) was studied and compared with non-adhering core-shell rubber-modified PSB blends using slow-speed uniaxial tensile testing and notched high-speed tensile test.

72 citations


Journal ArticleDOI
TL;DR: In this paper, the surface modification of a series of homopolymers is accomplished through mixing an AB block copolymer, where B is a poly(dimethylsiloxane) (PDMS) block and A is the block of the same chemical identity as of the hompolymers.
Abstract: The surface modification of a series of homopolymers is accomplished through mixing an AB block copolymer, where B is a poly(dimethylsiloxane) (PDMS) block and A is the block of the same chemical identity as of the homopolymers. The homopolymers are polystyrene, poly(α-methylstyrene), and Bisphenol A polycarbonate. The surface composition of PDMS is measured by angle-dependent ESCA. The PDMS blocks are segregated in the topmost surface region and constitute up to 90 wt% of the surface of the AB/A blends, even though the overall bulk PDMS concentrations of the blends are 6% or less

69 citations


Journal ArticleDOI
TL;DR: A graft copolymer, polypropylene-graft-polycaprolactone (PP-g-PCL), is proposed in this article, which is an effective compatibilizer for PP blends with many engineering plastics, such as polycarbonate (PC) and PVC.
Abstract: A new graft copolymer, polypropylene-graft-polycaprolactone (PP-g-PCL), is prepared which is an effective compatibilizer for PP blends with many engineering plastics, such as polycarbonate (PC) and PVC. The chemistry in the preparation of this graft copolymer involves hydroxylated PP, containing primary or secondary alcohol groups, and the anionic ring opening polymerization of e-caprolactone (e-CL). Despite the heterogeneous reaction conditions, the molecular structures of PP-g-PCL copolymers can be controlled by OH content, e-CL concentration, and reaction time. In the bulk, the indivdual PP and PCL segments in the graft capolymers are crystallized into two separate phases with high crystallinities

Journal ArticleDOI
TL;DR: In this article, two series of polycarbonate block copolymers were synthesized, and their mechanical properties were evaluated by unixial tension experiments, and it was found that activation of cooperative secondary relaxation at the temperature and time scale of the stress-strain experiment is necessary for the copolymer to be able to yield.
Abstract: Two series of polycarbonate block copolymers were synthesized, and their mechanical properties were evaluated by unixial tension experiments. One series which consists of the block copolymers of Bisphenol A and tetramethyl-bisphenol A polycarbonates was used to find correlations between their ability to shear yield and their secondary relaxations. The other series of such copolymers in which the intrachain motional correlation distance was limited by inserting flexible linkages between the block units was used to test the effect of the extent of the scale of in-chain secondary relaxation on ductility. We found that the activation of cooperative secondary relaxation at the temperature and time scale of the stress-strain experiment is necessary for the copolymers to be able to yield

Journal ArticleDOI
TL;DR: In this article, impact modification was studied for a variety of engineering thermoplastics to determine if notched Izod data obtained at various temperatures and modifier concentrations could be correlated with particle size or surface-to-surface interparticle distance of the modifier.
Abstract: Impact modification was studied for a variety of engineering thermoplastics to determine if notched Izod data obtained at various temperatures and modifier concentrations could be correlated with particle size or surface-to-surface interparticle distance of the modifier. Elastomers evaluated were characteristic of those used in commercial blend systems for those polymers, and both functionalized and nonfunctionalized materials were studied. For the single matrix polymer/elastomer-modified blend systems studied [poly(phenylene sulfide) (PPS), polyoxymethylene (POM), poly(butylene terephthalate) (PBT)], elastomer interparticle distance provides a better correlation to brittle–tough transition temperature than does particle size, as predicted by the Wu model. In POM, the dispersion morphology of the samples used was not adequate to achieve the critical interparticle distance required for supertoughening at room temperature. In this study, the critical interparticle distance has been shown to depend on the degree of crystallinity (PPS) and the modulus of the impact modifier relative to the matrix (PBT). Actual adhesion of the polymer to the matrix (variation of functionality levels) was not found to have a strong influence (PBT). In POM, the increase in impact at the brittle–tough transition was dependent on the molecular weight of the base resin. This is examined with respect to the ratio of the molecular weight (Mn) to the entanglement molecular weight (Me), which determines the critical molecular weight necessary to achieve useful physical properties. In polyester (PET)/polycarbonate (PC)/elastomer blends, the molecular weight of the primary matrix resin (PET) determined impact properties within the molecular weight range of the resin studied. This was again related to the Mn/Me ratio for PET and PC. © 1994 John Wiley & Sons, Inc.

Journal ArticleDOI
TL;DR: In this article, the fabrication of unidirectionally reinforced composites made from carbon fibres subjected to different surface treatments in combination with various (polycarbonate, polyethersulphone and epoxy) matrices, and a study of some of the mechanical properties (that is, the interlaminar-shear strength (ILSS) and the failure behaviour) of these composites, are presented.
Abstract: This paper has three principle thrusts: (i) the fabrication of unidirectionally reinforced composites made from carbon fibres subjected to different surface treatments in combination with various (polycarbonate, polyethersulphone and epoxy) matrices, (ii) a study of some of the mechanical properties (that is, the interlaminar-shear strength (ILSS) and the failure behaviour) of these composites; and (iii) determination of the correlations between the adhesion of the matrix polymers as measured by the ILSS and the surface structure as well as the surface chemistry of the various fibres. It will be shown that the surface structure of the fibres has a minor effect, while the surface chemistry appears to have an extraordinarily great influence on the adhesion of the fibres to high-temperature thermoplastics. The data clearly show that, depending on the processing temperature during the fabrication of the composites, chemical bonds can be formed at the fibre-polymer interface. This bond formation is initiated by the decomposition of carboxylic groups and, as a consequence, dangling carbon atoms are free to react with the functional groups of the polymer.

Patent
07 Apr 1994
TL;DR: In this paper, a two-stage process for the production of thermoplastic, solvent-free lightly branched polycarbonates in the melt using ammonium and/or phosphonium catalysts was described.
Abstract: The invention relates to a two-stage process for the production of thermoplastic, solvent-free lightly branched polycarbonates in the melt using ammonium and/or phosphonium catalysts in the first stage and alkali metal and/or alkaline earth metal catalysts in the second stage.

Patent
15 Aug 1994
TL;DR: In this article, a thermoplastic composition which comprises a siloxane polycarbonate block copolymer is defined, where the polysiloxane segments of the copolymers are of the formula: ##STR1## where R1, R2, Y, D, A, X, A' and E are as defined herein.
Abstract: A thermoplastic composition which comprises a siloxane polycarbonate block copolymer wherein the polysiloxane segments of the copolymer are of the formula: ##STR1## where R1, R2, Y, D, A, X, A' and E are as defined herein, and high heat polycarbonates containing recurring or repeating polycarbonate units of the formula: ##STR2## wherein Z is --O--, --N(R3)-- or a mixture thereof and R3 is selected from hydrogen, hydrocarbyl and halogen-substituted hydrocarbyl.

Journal ArticleDOI
01 Aug 1994-Polymer
TL;DR: In this paper, it is demonstrated that 10 wt% or less of polycarbonate (PC) greatly facilitates the dispersal of such core-shell impact modifiers in a PBT matrix and leads to tough blends even at low temperatures.

Journal ArticleDOI
TL;DR: In this article, a procedure to map atomistically detailed polymer models onto abstract polymer models like, for instance, the bond fluctuation model is discussed and an application to conformational and dynamic properties of two bisphenol polycarbonates in the melt is presented.
Abstract: A procedure to map atomistically detailed polymer models onto abstract polymer models like, for instance, the bond fluctuation model is discussed. This mapping is done on length and time scales mesoscopic to both models and incorporates static as well as kinetic information. The purpose of the procedure is to transfer information about a specific polymeric species into a simpler abstract model whose large scale and long time properties one can study in a computer simulation. The method is described and an application to conformational and dynamic properties of two bisphenol polycarbonates in the melt is presented

Journal ArticleDOI
01 Mar 1994-Polymer
TL;DR: In this paper, the phase behavior of blends of α-methylstyrene/acrylonitrile copolymers (α-MSAN) with poly(methyl methacrylate) (PMMA), tetramethylbisphenol A polycarbonate (TMPC), poly(vinyl chloride) (PVC), poly (2,6-dimethyl-1,4-phenylene oxide) (PPO), poly((ϵ-caprolactone)(PCL) and bisphenolic A poly carbonate (PC)) were compared

Journal ArticleDOI
M. Abbate, Ezio Martuscelli1, Pellegrino Musto1, G. Ragosta, Gennaro Scarinzi1 
TL;DR: In this article, a highly cross-linked thermosetting epoxy resin was modified by a reactive blending process carried out in the presence of bisphenol A polycarbonate (PC).
Abstract: A highly cross-linked thermosetting epoxy resin was modified by a reactive blending process carried out in the presence of bisphenol A polycarbonate (PC). Prior to the curing process the PC component was dissolved at high temperature in the uncured epoxy matrix. FTIR investigation of this reactive mixture demonstrated the occurrence of physical and chemical interactions among the blend components. Isothermal kinetic measurements performed by FTIR spectroscopy showed that the presence of PC does not affect the overall curing mechanism but decreases both the initial reaction rate and the final conversion of reactants. © 1994 John Wiley & Sons, Inc.

Patent
22 Aug 1994
TL;DR: In this paper, an epoxy functional polyester derived from the reaction of a polyfunctional epoxy compound and a carboxylic acid-functional polyester was used to improve the hydroyltic stability.
Abstract: A composition useful in the fabrication of molded articles contains a blend of a polycarbonate, a high impact rubbery modifier such as a core-shell polymer and a catalyst quencher selected from a Group IB or IIB metal phosphate salts such as sodium dihydrogen phosphate wherein the hydroyltic stability is improved via the incorporation of an epoxy-functional polyester derived from the reaction of a polyfunctional epoxy compound and a carboxylic acid-functional polyester

Patent
25 Oct 1994
TL;DR: In this article, the authors proposed a thermoplastic resin composition having excellent antistatic properties and does not cause corrosion, etc., of a metallic part at the area of contact even when used in combination with that part by mixing a specified amount of an anionic surfactant with an epoxy compound and an aromatic polycarbonate resin.
Abstract: PURPOSE:To obtain a thermoplastic resin composition having excellent antistatic properties and does not cause corrosion, etc., of a metallic part at the area of contact even when used in combination with that part by mixing a specified amount of an anionic surfactant with a specified amount of an epoxy compound and an aromatic polycarbonate resin. CONSTITUTION:The composition comprises 0.01-20.0wt.%, based on the whole composition, anionic surfactant (e.g. sodium lauryl sulfate), 0.01-20.0wt.%, based on the whole composition, epoxy compound (e.g. bisphenol A epoxy resin) and an aromatic polycarbonate resin (e.g. bisphenol A polycarbonate resin).

Journal ArticleDOI
V. Di Liello1, Ezio Martuscelli1, Pellegrino Musto1, Giuseppe Ragosta1, Gennaro Scarinzi1 
TL;DR: In this paper, the fracture toughness of a highly crosslinked epoxy resin modified by a reactive blending process carried out in the presence of bisphenol A polycarbonate increases markedly with increasing PC content in the blend.
Abstract: The yield and fracture behavior of has been studied. It was found that the fracture toughness of a highly crosslinked epoxy resin modified by a reactive blending process carried out in the presence of bisphenol A polycarbonate increases markedly with increasing PC content in the blend. SEM of the fractured surfaces indicated a crack blunting mechanism as the main source of energy dissipation in the various investigated blend compositions. No evidence of phase separation of the minor component during the curing and postcuring steps was observed. The yield data were correlated with the fracture toughness data to evaluate the extent of crack-tip blunting

Patent
17 May 1994
TL;DR: In this paper, a flame retardative polycarbonate resin composition which comprises 100 parts by weight of an aromatic polyricate resin (A), 0.01 to 0.5 part of an alkali/or alkaline-earth metal salt of a perfluoroalkanesulfonic acid (B), and optionally 5 to 120 parts of an inorganic filler was disclosed.
Abstract: There is disclosed a flame retardative polycarbonate resin composition which comprises 100 parts by weight of an aromatic polycarbonate resin (A), 0.01 to 0.5 part by weight of an alkali/or alkaline-earth metal salt of a perfluoroalkanesulfonic acid (B), 0.03 to 5 parts by weight of an organopolysiloxane containing organoxysilyl group bonded to a silicon atom through a divalent hydrocarbon group (C), and optionally 5 to 120 parts by weight of an inorganic filler. The above composition has excellent flame retardancy capable of preventing dripping thereof at the time of combustion of a thin-walled material made from the highly fluidized composition while maintaining the dimensional stability and the mechanical properties such as impact resistance that are inherent in polycarbonate.

Patent
07 Jan 1994
TL;DR: In this paper, the authors proposed a method to obtain an aromatic polycarbonate, useful for electric devices, having a good color quality and a high heat resistance by using sodium hydroxide having an iron content of not more than a prescribed value.
Abstract: PURPOSE:To obtain an aromatic polycarbonate, useful for electric devices, having a good color quality and a high heat resistance (a temperature of weight reduction by heat) by using sodium hydroxide having an iron content of not more than a prescribed value. CONSTITUTION:In this process for producing an aromatic polycarbonate by using (A) sodium hydroxide, (B) an aromatic dihydroxy compound, and (C) a precauser of a carbonate, sodium hydroxide containing not more than 2ppm, or preferably not more than 1ppm of iron is used as the component (A). Further, as the component (B), e.g. a compound of the formula (each of Ar , Ar and Ar is a divalent aromatic group; X is a group connecting Ar to Ar ), more concretely bis(4-hydroxyphenyl) methane, and as the component (C), carbonyl chloride (phosgene), are preferably used.

Journal ArticleDOI
TL;DR: In this article, photophysical and photochemical techniques were used to investigate the photodegradation of Bisphenol A polycarbonate (PC), with diphenyl carbonate as a model compound.
Abstract: Photophysical and photochemical techniques were used to investigate the photodegradation of Bisphenol A polycarbonate (PC), with diphenyl carbonate as a model compound. UV excitation of these compounds leads to a fluorescence band with a maximum around 300 nm. The triplet state of PC is also observed both by transient absorption and by phosphorescence studies. The PC triplet in CH 2 Cl 2 solution interacts with oxygen, ferrocene, trans-piperylene, and perylene with rate constants of 6.25×10 8 , 2.89×10 8 , 3.05×10 8 , and 5.60×10 8 M -1 s -1 , respectively

Patent
02 Mar 1994
TL;DR: In this paper, a block condensation copolymers with improved processability, low temperature impact strength and solvent resistance have been proposed. But they require polysiloxane blocks such as STR1 and polycarbonate-aliphatic polyester blocks.
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.

Journal ArticleDOI
TL;DR: In this article, the mutual diffusion coefficient of polycarbonate and copolyester was investigated at temperatures from 200 to 230°C and the activation energy of interdiffusion was determined to be 95 kJ/mol.
Abstract: The interdiffusion of two miscible polymers, polycarbonate (PC) and a copolyester (KODAR), was studied at temperatures from 200 to 230°C. The two polymers were coextruded as microlayer composites with up to 3713 alternating layers. The microlayer structure provided a large area of intimate contact between the two polymers with minimal mixing. Initially, two glass transition temperatures were observed by DSC that were intermediate between the glass transition temperatures of the pure components. Upon annealing, the glass transition temperatures shifted closer together, reflecting the extent to which inter-diffusion had occurred. After no more than 2 h of annealing, a single glass transition temperature was observed. A model was formulated based on Fick's law of diffusion that related the mutual diffusion coefficient, D, to the change in the glass transition temperatures. The model also incorporated an “equivalent” residence time to account for diffusion that occurred during the coextrusion process. It was not necessary to consider the concentration dependence of D to satisfactorily describe the data with this model. For the temperature range from 200 to 230°C, the value of D varied from 4.0 × 10−16 to 1.6 × 10−15 m2/s. The activation energy of interdiffusion was determined to be 95 kJ/mol. © 1994 John Wiley & Sons, Inc.

Journal ArticleDOI
TL;DR: A mixture of thermal rearrangement products of polycarbonate including dibenzofuran and phenyl-2-phenoxybenzoate are mainly responsible for the structured fluorescence emission as discussed by the authors.
Abstract: Polycarbonate is routinely subjected to heat treatment, and the thermal degradation products formed during this thermal treatment give rise to a distinct structured fluorescence spectrum. The structured fluorescence emission is observed when polycarbonate is subjected to thermal treatment in air as well as in nitrogen. A mixture of thermal rearrangement products of polycarbonate including dibenzofuran and phenyl-2-phenoxybenzoate are mainly responsible for the structured fluorescence emission. Most of the thermal degradation products of polycarbonate undergo photolysis, leading to the formation of photoproducts, which subsequently undergo a photoinduced bleaching process, with the noted exception of phenyl-2-phenoxybenzoate. The exposure of polycarbonate to high temperature for only short time periods, simulating mild industrial processing conditions, results in the formation of a relatively small amount of thermal degradation products, which, accordingly, has only a minor effect on the photodegradation of polycarbonate. © 1994 John Wiley & Sons, Inc.

Patent
05 Sep 1994
TL;DR: A resin composition consisting of an aromatic polycarbonate resin, a thermoplastic graft copolymer obtained by grafting a diene rubber component with a vinyl cyanide compound and an aromatic vinyl compound, a phosphoric acid ester, a polytetrafluoroethylene, a scaly inorganic filler, and a composite rubber having a network structure in which a polyorganosiloxane rubber component and a polyalkyl (meth)acrylate rubber component interpenetrate each other, each in a specified amount as mentioned in this paper.
Abstract: A resin composition consisting essentially of (a) an aromatic polycarbonate resin, (b) a thermoplastic graft copolymer obtained by grafting a diene rubber component with a vinyl cyanide compound and an aromatic vinyl compound, (c) a phosphoric acid ester, (d) a polytetrafluoroethylene, (e) a scaly inorganic filler, and (f) a composite rubber having a network structure in which a polyorganosiloxane rubber component and a polyalkyl (meth)acrylate rubber component interpenetrate each other, each in a specified amount This resin composition has excellent fluidity and allows easy mold- processing The molded article made therefrom is excellent in flame retardancy, stiffness, heat-resistance, impact strength and appearance