An all solvent & alkyd resin high-gloss enamel normally has a pigment to binder ratio, that is lower than a Lorama Polysaccharide Resin Technology (LPRT) formula. This means there is an excess volume of alkyd resin and mineral spirits available to wet and disperse the pigments. This excess volume also helps to keep the pigments dispersed. However, the volume of pigments in the LPRT formula is exactly the same as the volume of pigments in the all solvent & alkyd resin formula. Therefore, the hiding characteristic of the two formulas is exactly the same.
LPRT allows for the same quality of enamel, with a higher pigment to binder ratio. Therefore, there is less volume of alkyd resin and mineral spirits to wet and disperse the pigment. The lower volume is not as effective at keeping pigment dispersed. Therefore, a quality polymeric dispersant is required to disperse the pigment and keep the pigment dispersed. Lorama LDA100 Polymeric Dispersant is such a dispersant.
Guidelines for modifying alkyd Enamels with LPRT
Methods of Lorama Polysaccharide Resin Technology Modification
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