Thermally insulating coating compositions

Abstract

The present invention relates to the thermally insulating coating compositions which comprise at least from 15% to 80% by weight of a film forming binder, from 10% to 70% by weight of a porous and or non-porous inorganic particles having a D50 particle size range of between 30 µm and 300 µm and a D95 inorganic particle size range of between 2.0 µm and 1000 µm, where the dry weight percentage of the inorganic particles is based upon a dry weight ratio of specific particle size ranges these being a “large” particle size range of between 300 µm to 1000 µm, a “medium” particle size range of between 100 µm to 300 µm, and a “small” particle size range of between 10 µm to 100 µm. The specific ratio of “large” to “medium” to “small” particle size ranges being between 3:2:1 and 3:2:2. The coatings derived from the compositions of the invention may be applied by spray, roller or trowel and may be applied to any substrate surface such as wood, metal, masonry, plastics or composites.

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