Solutions for Masterbatches - Sachtleben Chemie GmbH

Cost-efficient solutionsThe pigments in a masterbatch formulation are its most costintensiveelement. Pigmentation should, therefore, alwaysbe as economical and efficient as possible. Numerous otherpigments are prone to agglomeration, which reduces the pigment‘sscattering power. BLANC FIXE micro PLUS is used asfunctional extenders in plastics. It makes it possible to reduceplastic-formulation costs and also enhance the efficiency of thepigments used. Blanc fixe micro PLUS particles act as idealspacers for pigments. BLANC FIXE micro PLUS is widely usedfor partial replacement of white and colored pigments withoutany loss of optical performance properties, such as gloss andcolor strength.The pigment-spacing action of BLANC FIXE micro PLUS permitsreplacement of 5 to 10% of titanium dioxide, carbon black arecolored pigments content. BLANC FIXE micro PLUS’s excellentdispersibility in all thermoplastics, its low refractive index (1.64)and its defined particle- size range (d 50= 0.7 μm) make it possibleto produce white and colored masterbatches particularly costeffectively using micro PLUS as an additive. An example of amodified formulation is shown below.Spacing of white, blackor colored pigmentsA spacer recovers the whole potential of pigments, which is alreadyin a system, the pigment concentration can be reduced accordingto the increased efficency (mostly 5% to 10% of pigment)TiO 2 TiO 2TiO 2 TiO 2TiO 2TiO TiO22lost efficiency!spacingTiO 2TiO 2TiO 2TiO 2TiO 2BLANC FIXEmicroPLUSTiO 2TiO 2cie L* CIE a* CIE b* Gloss [%] 20 ºPhthalocyanine Blue MB - recommended Amount 3 % in PP97 % PP H + 3.0 % MB 1 29.6 7.64 -22.2 7797 % PP H + 2.7 % MB + 0.3 % BLANC FIXE micro PLUS 2 29.6 7.66 -22.3 78Perylene Red & Iron Oxide Red MB - recommended 2 % Amount in PP98 % PP H + 2.0 % MB 1 42.1 40.9 24.6 7898 % 1.8 % MB + 0.2 % BLANC FIXE micro PLUS 2 42.1 41.0 24.8 78TiO 2- recommended Amount 1 % in PP99 % PP H + 1.0 % Pigment 1 95.1 -1.0 1.0 7399 % PP H + 0.9 % Pigment + 0.1 % BLANC FIXE micro PLUS 2 95.0 -1.1 1.0 72BLANC FIXE micro PLUSpH approx. 9Sieve residue w.b. > 45 µm [%] < 0.0004Median value d 50(Sed.) [µm] approx. 0.7Densitiy [g/ml] approx. 4.4Color coordinate L* [powder] approx. 9921