Pigmented polycarbonates comprising submicron silica stabilizer

Details Pigmented polycarbonates comprising submicron silica stabilizer Pigmented polycarbonates comprising submicron silica stabilizer

C - Chemistry, Metallurgy

08

K

400/7506

C08K 3/36 (2006.01) C08L 69/00 (2006.01)

Patent

CA 1084193

TITLE PIGMENTED POLYCARBONATES ABSTRACT OF THE DISCLOSURE Polycarbonates are pigmented with an opaque pigment such as TiO2 and contain, intimately mixed therein, a silica at a level of 0.01 to 3% by weight. The silicas are those produced by the flame hydrolysis of SiCl4 and have a particle size up to about 10 microns. The pigmented polycarbonates can be moulded to form articles having excellent surface appearance and are especially adapted for moulding polycarbonates in moulds having radical contours and fine interstices which constrict the flow path of the polycarbonate during moulding.

261063

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