In this research, the stages and the attempts made to obtain a stable emulsion of alkyd resin and linseed oil in water are discussed. The starting point of this new formulation is a solvent-borne alkyd paint for wood, in which the solvent white spirit is replaced with water, in order to reduce the volatile organic compounds (VOC) emissions. The modification of the formulation requires further adjustments: to have the alkyd dissolved in water, thus forming an oil/water emulsion, suitable surfactants and other additives must be added to the formulation to ensure stability and to obtain the desired properties. Additives are required to modify the properties of the resin, such as viscosity or surface tension, or to improve specific properties throughout the life-cycle of a paint, such as processing properties in manufacture, in-can stability, application properties, drying properties and final film performance. In this framework, attempts have been made also to find the proper sequence of the addition of components in the emulsion, a very important aspect for paint formulators.
Keywords: wood paint, waterborne, alkyd emulsion, additive
Authors
Sansonetti E.
Latvian State Institute of Wood Chemistry, Riga, Latvia
Andersone I.
Latvian State Institute of Wood Chemistry, Riga, Latvia
Andersons B.
Latvian State Institute of Wood Chemistry, Riga, Latvia
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