Stabilising polymers

Details Stabilising polymers Stabilising polymers

C - Chemistry, Metallurgy

08

K

400/7008, 400/90

C08K 5/36 (2006.01) C08K 5/00 (2006.01) C08K 5/51 (2006.01) C08K 5/5398 (2006.01) C08L 57/00 (2006.01) C08L 101/00 (2006.01)

Patent

CA 1201546

ABSTRACT STABILISING POLYMERS A process for improving the stability of a polymer comprises mixing the polymer with a sulphur- containing compound under conditions which cause oxidation of the compound, and adding an ultra-violet stabiliser to the polymer. Oxidation may be achieved by conducting the mixing in closed apparatus, in the presence of a peroxide, or in apparatus open to the atmosphere. The uv stabiliser may be added before mixing, e.g. chemically incorporated in the sulphur- containing compound.

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