Pigments in coatings

Table 5 Changes in the crystallite size of some polycyclic pigments in coatings or plastics coloration as a result of heat exposure (calculated from the X-ray diffraction spectra).

A hydrophilic emulsifier, functions as a co-emulsifier for petroleum oils, fats, solvents and waxes in household products, industrial lubricants and textile dye carriers. It is also used as a dispersant for pigments in coatings, a solubilizer for oils and fragrances, and as an emulsifier for aliphatic alcohols in tobacco sucker control concentrates. 

The reaction of starch phosphate with such proteins as soybean protein and casein was used to produce protective colloids for insolubilization of pigments in coatings and paper.1684 The complexation of starch phosphate with protein insolubilizes the latter, particularly when starch phosphate is in the form of an ammonium salt.1685... 

We will now consider each stage separately, identifying the principles involved, and using illustrations from the literature some of which relate to the use of titanium dioxide (Ti02) pigments in coating technology. 

Uses Dispersant tor pigments in coatings solubilizer tor oils and fragrances emulsifier coemulsifier for petrol, oils, fats, soivs., and waxes in cosmetics, household prods., industrial lubricants textile dye carriers emulsifier for tobacco sucker control cones. 

Chem. Analysis SiO (43.8%), ALO, (39%), Ee O, (1.6%), TiO (1.5%) CAS 1332-58-7 EINECS/ELINCS 296-473-8 Uses Extender, pigment in coatings, metal primers, emulsion paints, alkyd flats, traffic paints, esp. in high PVC paints where dry opacity is desired Features No ozone-depleting substances Properties Powd. 0.3 p avg. particle size 0.1% max. 325 mesh residue dens. 2.7 mg/m oil absorp. 42 GE brightness 78 pH 4.2-4.8 (10% slurry)... 

Massonnet, G., tnd W. Stoeddein. Identification of Organic Pigments in Coatings Applications to Red Automotive Topcoats. Part HI Raman Spectroscopy (NIR FT-Raman). Lausanne, Switzerlcind European Academy of Forensic Sciences, 1997. 

Fine particles of malleable metals in elemental form are also used as pigments in coatings for aesthetic as well as protective purposes. They are generally platelet-shaped particles, but some are spherical. 

Stewart (1950) Stewart, A. Lead pigments and paints Official Digest of the Federation of Paint and Varnish Production Clubs 311 (1950) 1100-1113 SHEG (1985) Stieg, F.B. Opaque White Pigments in Coatings Applied Polymer Science, ACS Symposium Series 285, 2nd ed., less, R.W. Poehlein, G.W. (eds.) American Chemical Society, Washington (1985) 1249-1269... 

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