7 results about "Polysiloxane polycarbonate copolymer" patented technology

A polycarbonate resin composition of the present invention comprises: about 100 parts by weight of a base resin comprising about 10-90 wt% of a polycarbonate resin and about 10-90 wt% of a polysiloxane-polycarbonate copolymer resin; about 1-10 parts by weight of a diphenylamine-based compound; and about 0.1-2 parts by weight of a polydimethylsiloxane having a terminal reactive group and having a kinematic viscosity, measured at 40 °C according to ASTM D445, of about 5-200 cSt. The polycarbonate resin composition has excellent transparency, chemical resistance, fluidity, thermal stability, balance of these physical properties, and the like.

Embodiments of the present disclosure are directed to polycarbonate-based compositions comprising, based on a total weight of the polycarbonate-based composition, 15 wt % to 35 wt % of polycarbonate, 50 wt % to 75 wt % of polysiloxane-polycarbonate copolymer, 7 wt % to 15 wt % of a flame retardant, and greater than 0.5 wt % to 2 wt % of an impact modifier.

Disclosed is a polycarbonate composition which exhibits a high level of flame retardancy and excellent physical properties, without the need for the presence of a polyfluoroalkyl substance (PFAS) or an anti-drop agent. Disclosed is a polycarbonate composition which exhibits excellent flame retardant properties without using a halogen compound. Methods of making such compositions are disclosed. Structures prepared from the disclosed compositions are disclosed. The composition comprises: a) one or more branched polycarbonates; b) one or more phosphazene-based flame retardants; and c) one or more polysiloxane impact modifiers or one or more polysiloxane polycarbonate copolymers.

The polycarbonate resin composition of the present invention comprises: about 100 parts by weight of a base resin comprising about 95 wt% or less of a polycarbonate resin and about 5 wt% or more of a polysiloxane-polycarbonate copolymer resin; about 1 part by weight to about 15 parts by weight of a phosphazene compound; and from about 0.1 parts by weight to about 2 parts by weight of a polydimethylsiloxane having a terminal reactive group and having a dynamic viscosity rate of from about 5 cSt to about 200 cSt as measured at 40 DEG C according to ASTM D445. The polycarbonate resin composition has excellent transparency, flame retardancy (in a film), chemical resistance, impact resistance, and a balance of these characteristics.

The present invention relates to a thermoplastic resin composition and molded articles containing the same, which have excellent hardness, discoloration resistance, and impact resistance. More specifically, the present invention relates to a thermoplastic resin composition and molded articles containing the same, which contain polycarbonate resin, polysiloxane-polycarbonate copolymer, modified acrylic copolymer, alumina-based inorganic filler, triazine-based ultraviolet stabilizer, and core-shell type acrylic impact modifier in specific content ratios, and which have excellent scratch resistance, as well as excellent discoloration resistance and impact strength.

A polycarbonate resin composition according to the present invention comprises: about 100 parts by weight of a base resin including about 1 to about 96 wt% of a polycarbonate resin, about 2 to about 90 wt% of a recycled polycarbonate resin including polymethyl methacrylate, and about 2 to about 97 wt% of a polysiloxane-polycarbonate copolymer resin; about 1 to about 15 parts by weight of a phosphazene compound; about 0.3 to about 3 parts by weight of a phenylmethylsiloxane compound; and about 0.1 to about 2 parts by weight of a polydimethylsiloxane having a terminal reactive group and having a kinematic viscosity of about 5 to about 200 cSt as measured at 40°C according to ASTM D445. The polycarbonate resin composition has excellent environmental friendliness, (thin film) flame retardancy, chemical resistance, and impact resistance, and an excellent balance of said physical properties.