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Powder Coating is the only technical publication devoted to the Powder Coating industry and other green finishing technologies.
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New resin technology for semi-matte and dull-matte powder coatings—part 1

Commercialized resin technology has been developed that provides a new route to manufacture matte powder coatings offering advantages in processing and gloss consistency. This patent-pending technology provides a new solution to obtain 60° gloss results in the semi-matte and near-dull-matte ranges for both standard and super-durable powder coatings. The new resin binder systems are combined with the powder coating ingredients in a single extrusion versus the typical use of either matting agents or dry-blend technology using previously manufactured powders of differing reactivity. This two-part article summarizes results confirming the reliability and attractiveness of the matte powder finishes that may be achieved through the use of this new technology. Processing and performance results will be explored in detail in part 2 of this article, which will be published in October.

The growth of powder coatings for well over 30 years as an environmentally sustainable alternative for liquid paint is well known. Many industrial finishing segments, such as appliance, metal furniture, and lawn and garden, are dominated by powder coating technology. However, in numerous exterior-durable market segments, dull- or semi-matte gloss requirements predominate, such as in architectural or military coatings, which represent powder growth markets. Further, processing limitations or special performance requirements often reduce the reliability and consistency of these low-gloss powder coatings. Thus, various formulation techniques are engaged to achieve matte appearance, depending upon the chemistry and performance requirements of the powder coating.

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