Abstract:
A poly(carbonate-ester) copolymer including carbonate units of the formula (I); and ester units of the formula (II) wherein: T is a C 2-20 alkylene, a C 6-20 cycloalkylene, or a C 6-20 arylene; and R 1 and J are each independently a bisphenol A divalent group, or a phthalimidine divalent group or a third divalent group of the formula (III), (IV), (V), (VI) or (VII) wherein X a is a C 6-12 polycyclic aryl, C 3-18 mono- or polycycloalkylene, C 3-18 mono- or polycycloalkylidene, -(Q 1 )x-G-(Q 2 ) y - group wherein Q 1 and Q 2 are each independently a C 1-3 alkylene, G is a C 3-10 cycloalkylene, x is 0 or 1, and y is 1, provided that the at least one bisphenol A divalent group, at least one phthalimidine divalent group, and at least one third divalent group are present in the poly(carbonate-ester) copolymer.
Abstract:
The invention relates to a composition comprising A) a first polyester, B) a first polyolefin, C) a compatibilizer and D) a lubricant, wherein D) comprises a siloxane polymer having a viscosity of at least 10000 cSt and an optional second polyester and/or an optional second polyolefin, the total amount of A) and B) with respect to the total composition is at least 80 wt%, the amount of C) with respect to the total composition is 0.1 to 15 wt% and the amount of D) with respect to the total composition is 0.1 to 5.0 wt%.
Abstract:
Metallized articles comprising polycarbonate compositions are disclosed. The compositions include at least one first polycarbonate useful for high heat applications, a second polycarbonate that is a Bisphenol A (BPA) polycarbonate-polydimethylsiloxane copolymer; and optionally a third polycarbonate. The compositions can include one or more additives. The compositions can be used to prepare articles of manufacture, and in particular, automotive bezel.
Abstract:
Thermoplastic compositions include a polycarbonate-siloxane copolymer comprising: from about 49.5 wt% to about 97.95 wt% of at least one polycarbonate polymer; from about 2.0 wt% to about 49.5 wt% of at least one polycarbonate-siloxane copolymer; and from about 0.05 wt% to about 1.0 wt% of at least one release agent. The composition exhibits a melt volume flow rate of at least about 25 cm 3 /10 min, a ductile/brittle transition temperature of less than or equal to 10 °C, and high gloss after metallization and/or a substantial tensile yield strength retention improvement when exposed to sunscreen. Methods of forming an article include: forming a mixture comprising the thermoplastic composition, and injection molding, extruding, rotational molding, blow molding or thermoforming the mixture in a mold to form the article. Such compositions and methods may be used to form articles including, but not limited to, automotive bezels and housings in consumer devices.
Abstract:
Polycarbonate blend compositions are disclosed. The compositions include at least one polycarbonate useful for high heat applications. The compositions can include one or more additional polymers. The compositions can include one or more additives. The compositions can be used to prepare articles of manufacture, and in particular, automotive bezels.
Abstract:
Automotive articles include a polycarbonate-siloxane copolymer including: from about 49.5 wt % to about 97.95 wt % of at least one polycarbonate polymer; from about 2.0 wt % to about 49.5 wt % of at least one polycarbonate-siloxane copolymer; and from about 0.05 wt % to about 1.0 wt % of at least one release agent. The composition exhibits a melt volume flow rate of at least about 25 cm3/10 min, a ductile/brittle transition temperature of less than or equal to 10°C, and high gloss after metallization. Methods of forming an article include: forming a thermoplastic composition, and injection molding, extruding, rotational molding, blow molding or thermoforming the thermoplastic composition in a mold to form the article. Such compositions and methods may be used to form articles including, but not limited to, automotive bezels and reflectors.
Abstract:
A melt-blend composition is formed from, based on the total weight of the melt-blend composition, 0 to 5 wt.% of an additive; and 95 to 100 wt.% of a polymer composition, wherein the polymer composition comprises, based on the total weight of the polymer composition, 5 to 95 wt.% of a first copolycarbonate consisting of bisphenol A carbonate units and first additional carbonate units of the formula (I), (II), (III), (IV) or (V); 95 to 5 wt.% of a second copolycarbonate consisting of bisphenol A carbonate units and second additional carbonate units (phthalimidine carbonate units); and 0.001 to 0.1 wt.% of a transesterification catalyst, wherein the melt-blended composition has a haze of less than 15% and a transmission greater than 75%, each measured using the color space CIE1931 (Illuminant C and a 2° observer) at a 3.2 mm thickness.
Abstract:
The present invention relates to a method for the manufacture of a polycarbonate composition having a Yellowness Index of less than 2.0, said composition comprising i) a polymer component comprising aromatic polycarbonate and ii) a bis(2,4-dicumylphenyl)pentaerythritol diphosphite component wherein said bis(2,4-dicumylphenyl)pentaerythritol diphosphite component consists of bis(2,4-dicumylphenyl)pentaerythritol diphosphite, contaminants and/or degradation products derived from bis(2,4-dicumylphenyl)pentaerythritol diphosphite.
Abstract:
The invention relates to a composition comprising A) a polyester, B) a polyolefin and C) a compatibilizer, wherein C) is a functionalized polyolefin containing hydroxyl functional groups or a reaction product of the functionalized polyolefin and a polyester, wherein the total amount of A) and B) with respect to the total composition is at least 77 wt% and the amount of C) with respect to the total composition is 0.1 to 23 wt%.
Abstract:
The invention relates to a composition comprising A) a polyester, B) a polyolefin and C) a compatibilizer, wherein A) comprises a first polyester derived from an aromatic dicarboxylic acid, an acyclic aliphatic diol and at least one of a cycloaliphatic diol and spiroglycol and a second polyester different from the first polyester. The invention further relates to an article comprising the composition, particularly a toy block.