摘要:
There is described a polysiloxane having the structure: wherein R 1 , R 2 , and R 3 are independently a hydrocarbon radical, an unsaturated radical, an alkoxy radical, an aryl radical or an alkenyloxy radical, R 4 is independently a direct bond or hydrocarbon radical optionally substituted with oxygen and nitrogen, R 5 is independently a hydrogen, a halogen, an aliphatic group having from 1 to 6 carbon atoms, an aromatic group having 6 to 8 carbon atoms, an alkoxy group having from 1 to 6 carbon atoms, or an aryloxy group, R 6 is independently a hydroxyl group, an amine group, an acid chloride group, or a sulfonyl halide group, x is from 1 to 300; y is from 0 to 50; and z is from 0 to 50. The polysiloxane is used to make various copolymers and polymer blends. A variety of articles can be made using the polysiloxane described as a polymer blend or copolymer.
摘要:
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.
摘要:
The present invention relates to a process for preparing polysiloxane-polycarbonate block cocondensates proceeding from specific polycarbonates and hydroxyaryl-terminated polysiloxanes in presence of a salt of a weak acid.
摘要:
The present invention relates to a process for preparing polysiloxane-polycarbonate block cocondensates proceeding from specific polycarbonates and hydroxyaryl-terminated polysiloxanes. More particularly, the present invention relates to the preparation of the said block cocondensates by means of a reactive extrusion.
摘要:
본 발명은 폴리오르가노실록산 화합물, 제조방법 및 이를 포함하는 코폴리카보네이트 수지에 관한 것으로, 본 발명에 따르면 다양한 용도에 적용 가능하고, 특히 코폴리카보네이트 수지의 충격보강제, 개질제 또는 공단량체로 사용 가능한 폴리오르가노실록산 화합물 및 이를 포함하고 투명도를 유지하면서 저온 충격강도를 포함한 기계적 물성이 개선된 코폴리카보네이트 수지를 제공하는 효과가 있다.
摘要:
Interior aircraft components comprise a thermoplastic composition comprising: a first polymer comprising bisphenol A carbonate units and monoaryl arylate units, or a second polymer comprising bisphenol A carbonate units, monoaryl arylate units, and siloxane units, or a combination comprising at least one of the foregoing polymers; and an organophosphorus compound; wherein a sample of the thermoplastic composition has: an OSU integrated 2 minute heat release test value of less than 65 kW-min/m2 and a peak heat release rate of less than 65 kW/m2, an E662 smoke test DsMax value of less than 200, a flame time of less than 15 seconds, a burn length of less than 6 inches, and a drip extinguishing time of less than 5 seconds, an energy in multiaxial impact of 100 J or more and a ductility in multiaxial impact of 100%.
摘要:
Disclosed herein are methods and compositions polycarbonate blend compositions with improved appearance characteristics and impact characteristics. The resulting compositions, comprising a polycarbonate polymer, a first polysiloxane-polycarbonate copolymer, a second polysiloxane-polycarbonate copolymer, and optionally a color composition, can be used in the manufacture of articles while still retaining advantageous mechanical properties, melt flow properties, and appearance characteristics such as the ability to achieve deep black and bright white colors. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure.
摘要:
A composition comprises a first polycarbonate having a limited oxygen index of greater than 26%, wherein an article molded from the first polycarbonate has a smoke density after 4 minutes (DS-4) of greater than 600; and a second polymer different from the first polycarbonate, the second polymer comprising a poly(carbonate-siloxane) copolymer, a silicone graft copolymer, a polydialkylsiloxane, or a combination comprising at least one of the foregoing; wherein an article molded from the second polymer has a DS-4 value of greater than 600; wherein an article molded from the composition has a DS-4 value of smaller than 480.