Exactly your chemistry.Organic Pigments for Industrial Paint Mixing Systems Organische Pigmente fr Industrielack-MischsystemePigments secondly, sufficient binder must be incorporated to ensure flowability and storage stability of the pastes.Pastes formulated in this way can be mixed together - depending on the formulation - in any ratio. The paint is then finished by adding further amounts of binder or binder components. In its final composition and conse- quently in its properties it is comparable with a paint produced by the conventional method. Paint mixing systems can therefore be of advantage if very high or very specific demands are made on the quality of the paint.As already mentioned, the pigment selection for paint mixing systems is governed by the properties of the bin- der system and the end use of the paint. We are, therefore, presenting two recommendations that differ substantially in terms of the yellow, orange and red pig- ments. For obvious reasons, there are no alternatives to the phthalocyanine and inorganic pigments.The efficiency of a mixing system is determined by the choice of pigments. This involves examining a whole range of technological and fastness properties as well as the coloristic properties.As is generally the case, these properties are governed by the composition of the paint systems in question and by the requirements of the painted end product.Special importance is given to the flocculation stability of the pigments, firstly in view of the flow properties of the pastes and secondly in view of the reproducibility of the shades.A further prerequisite for good reproducibility of shades is satisfactory recrystallization stability of the pigments. The solvent composition must, therefore, be considered as an important factor.Coloristically, the pigments used should have the highest possible chroma so that the entire range of shades can be largely covered by combination of the selected pigments.In the yellow-orange-red range, the opacity of the pigments is also important.If an industrial paint tinting system is required to be able to produce all shades marketed commercially, a fairly high number of pigment pastes is needed. This raises doubts as to the cost-effectiveness of the production method. It may therefore prove advisable to reduce the number of pastes and in the future to pro- duce the few shades not achievable by this method by dispersing the powder pigments together. In this respect the conventional production method and the mixing system can reasonably complement one another.3General selection criteria for pigments4Paint mixing systems4Shade rangeRecommendation 1Recommendation 2Hostaperm*Yellow H7G Hostaperm Yellow H6G1 Hostaperm Yellow H5G Hostaperm Yellow H3G Hostaperm Yellow H4G (TS)1 NovopermYellow F2G (TS) Novoperm Yellow 5GD 70 Novoperm Yellow HR 70 (TS) Novoperm Yellow M2R 70 Novoperm Orange H5G 70 Novoperm Orange HL 70 (TS) / HL 70-NF1 Novoperm Red HF3S 70 Hostaperm Scarlet GO Hostaperm Red D3G 70 Hostaperm Red D2G 70 Novoperm Red F2RK 70 Novoperm Red F3RK 70 (TS) Hostaperm Red E2B 701 Hostaperm Pink E (TS) Hostaperm Pink E transp. 011/EB transp.1 Hostaperm Red Violet ER 02 Hostaperm Red Violet ERX/ERX-WD VioletHostaperm Violet RL spec. (TS) / RL-NF1 BlueHostaperm Blue A4R / B2G-L / BT-617-D / BT-627-D GreenHostaperm Green GNX (TS)Hostaperm Oxide Yellow BV (Bismuth vanadate) Iron oxide yellow Chrome titanium yellow Nickel titanium yellow Iron oxide red Titanium dioxide Carbon blackGreen shade yellowHansa Brilliant Yellow 2GX 70-SHansa Yellow10G Hansa Yellow 10 G 41 gran.Novoperm Yellow HR 70 (TS)Hansa Red GG Permanent Orange RL 70Permanent Red FGR Permanent Red FGR 70 Novoperm Red F5RK Novoperm Red BLS 022Novoperm Bordeaux 5BLS2 Permanent Bordeaux FGR Permanent Bordeaux FRRMedium shade yellowRed shade yellowOranges and scarletsMedium and blue shade redsMagentas and red-violetsInorganic pigmentsRecommendation 1 applies to high-quality industrial paints (e.g. alkyd/melamine baking enamels or 2-com- ponent acrylic paints). The pigments have good resi- stance to polar solvents coupled with high light and weather fastness, are heat-stable and fast to over- coating.Recommendation 2 applies to industrial paints and decorative paints (e.g. oxidatively drying alkyd resin paints). Consequently the selection contains pigments that are not suitable for baking enamels, are not fast to overcoating and should be used only in the presence of low-aromatic non-polar solvent mixtures.51Suitability in water-based systems should be checked prior to use. 2Not recommended for water-based systems.TS:Pigments with closer tolerances, especially for use in tinting systems (TS range) WD: Pigments with surface treatment for waterborne systems NF:Pigments with surface treatment for high solid systemsMany dyestuffs, pigments and chemicals are patented in numerous industrial countries.= Trademark of Clariant registered in numerous countries*=Trademark registered in numerous countries