Abstract: A process for producing vinyl fluoride polymer comprising polymerizing vinyl fluoride in an aqueous polymerization medium containing initiator and halogen-free surfactant with a critical micelle concentration of less than about 0.05 weight percent at 25° C. The halogen-free surfactant is present in the aqueous polymerization medium in an amount less than about 0.1 weight percent based on the weight of the aqueous polymerization medium. The aqueous polymerization medium is essentially free of halogen-containing surfactant. An aqueous dispersion comprising vinyl fluoride polymer particles present in a range of from about 5 to about 40 weight percent based on the weight of the aqueous phase, wherein said vinyl fluoride polymer particles have a Dv(50) of less than about 20 microns, and halogen-free surfactant, wherein said halogen-free surfactant is present in said aqueous dispersion in an amount less than 0.1 weight percent based on the weight of the aqueous phase.

Abstract: The present invention provides polyolefin compositions that are UV stable and suitable for articles that may be exposed to sunlight. The present invention provides, in one aspect, a polyolefin homopolymer or copolymer comprising, by weight of the polyolefin: (a) from 0.001 to 2 wt % hindered amine; (b) from 0.001 to 1 wt % ethoxylated amine; and (c) from 0.001 to 1 wt phenolic antioxidant; wherein the amount of phenolic antioxidant (PA), ethoxylated amine (EA) and hindered amine (HA) present in the composition is satisfied by the equation: PA + EA HA = Q wherein Q ranges from 0.15 to 250 when each component is expressed as a weight percentage. The composition is stable towards UV radiation such that it is useful for any number of articles such as automotive components and other articles that are, for example, injection molded.