TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The composition possesses: an alpha value of more than 165 cm-1, where alpha value is given by the formula ( alpha (cm-1) = -log10(TT)/t); and a whiteness index of at least 80, preferably at least 90, as provided by ASTM E 313. (I) is oxides, sulfides, oxides hydroxides, silicates, sulfates and/or carbonates. (I) is a white pigment, which is zinc oxide pigments, zinc sulfide pigments (both preferred), titanium dioxide pigments, lithopone pigments, white lead pigments, barium sulfate or corresponding complex pigments obtained from coating of the above mentioned pigments on suitable inorganic carriers.TT = total luminous transmittance as determined according to ASTM D1003; andt = thickness of the sample in cm.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: (A) is: TFE and/or chlorotrifluoroethylene (CTFE) copolymers with ethylene (preferred), propylene or isobutylene, with a molar ratio per(halo)fluoromonomer(s)/hydrogenated comonomer(s) of 30:70-70:30, and optionally containing at least one comonomer (0.1 to 30 mole%); and/or vinylidene fluoride (VDF) polymers (0.1-15 mole%), optionally comprising recurring units, derived from at least one fluorinated comonomer different from VDF, and optionally comprising at least one hydrogenated comonomer. (A) is preferably a VDF polymer comprising: VDF (at least 60 mole%, preferably 85 mole%); optionally a fluorinated comonomer (0.1-15%, preferably 0.1-10 mole%), which is vinyl fluoride, CTFE, hexafluoropropene, TFE, perfluoromethylvinylether and/or trifluoroethylene; and optionally at least one hydrogenated comonomer (0.1-5 mole%, preferably 0.1-1 mole%). (B1) is TFE copolymers comprising recurring units derived from at least one per(halo)fluoromonomer, which is either: perfluoroalkylvinylethers of formula (CF2=CFOR1); perfluoro-oxyalkylvinylethers of formula (CF2=CFOR2); 3-8C perfluoroolefins e.g. hexafluoropropylene; and/or per(halo)fluorodioxoles of formula (II). (B1) is preferably a TFE/MVE copolymer comprising recurring units derived from: MVE (3-25 mole%, preferably 10-15 mole%); and TFE (75-97 mole%, preferably 85-90 mole%).R1 = 1-6C perfluoroalkyl, preferably -CF3, -C2F5, -C3F7;R2 = 1-12C perfluorooxyalkyl having at least one ether group (perfluoro-2-propoxy-propyl); andR3-R6 = F or 1-6C perfluoroalkyl, optionally comprising at least one O.Preferred Process: The process comprises mixing (A), (I) and (B1). EXAMPLE - Powdered Sachtolith HDS (RTM: Zinc sulfide pigment) and a dispersant comprising tetrafluoroethylene-perfluoromethyl vinylether copolymer were pre-mixed in a rapid mixer so as to obtain a homogenous powdered mixture. To this mixture Solef 6008 (RTM: Vinylidene fluoride homopolymer) was added. The mixture was stirred at 300 rpm for 3 minutes. The powdered mixture was then processed using a double screw extruder at 180, 190, 200, 200, 200 and 210 degrees C to produce the fluoropolymer composition.