The OCCA Cape Section meeting was held at the Mowbray Golf Club in Cape Town. The event was sponsored by IMCD.
The talk attracted 33 people and centred on several new innovative raw materials designed to provide exciting improvements to existing technologies. The first product, the novel binder PRIMIS® AF 1000, combines organic and inorganic components, which results in formulations with very low dirt pick-up and high colour stability. It also offers improved scratch and abrasion resistance, optimised thermal conductivity, water-vapour permeability and durability.
Photographic illustrations of dirt pick-up and colour stability compared to conventional coatings showed its enormous advantages.
The second product, VINNAPAS® CEZ 3031, is a versatile binder for broad use in interior and exterior coatings. It is highly recommended for masonry paints, textured coatings, silicone resin admixtures and pastel or deep coloured paints for plasters. Exceptional colour stability under sunlight and good resistance to dirt pick-up are key properties along with excellent compatibility with tinting systems. Low temperature film formation, another attribute, is achieved for primers, fillers, matt and gloss finishes. Most importantly, formulations with VINNAPAS® CEZ 3031 are environmentally-friendly due to the product’s low formaldehyde content (<20 ppm) and the low volatile organic compound content (VOC < 1 g/l). A further key attraction is the favourable cost-benefit ratio of this binder system.
A binder for fire-resistant paint, VINNAPAS® EZ3112, was introduced following an insightful explanation of how intumescent coatings are intended to function, describing the collapse of structural steel when it is subjected to temperatures in excess of 500˚ C. These special fire protection coatings are usually applied one to four mm thick and, when subject to heat, foam to tens to hundreds of times the original thickness.
A multi-story building subjected to these temperatures could collapse after five minutes. However, if the appropriate intumescent coating based on this dispersion is used, it can take up to 90 minutes before a collapse would take place. This would obviously provide more time for the fire to be extinguished.