Thursday, June 26, 2008 - 10:15 AM
South American AB (Capital Hilton)

Powder Coatings Based on Seed Oils

Jim D. Earls, The Dow Chemical Company, Freeport, TX, Fabio Aguirre, The Dow Chemical Company, Freeport, TX, Maurice J. Marks, The Dow Chemical Company, Freeport, TX, and Jerry E. White, The Dow Chemical Company, Freeport, TX.

The Dow Chemical Company has a number of active development projects on going for seed oils and their derivatives in industrial applications. In the work reported in this paper, multi-functional acid derivatives from castor oil and reductively hydroformylated soy bean oil methyl esters were evaluated in hybrid powder coating systems. In comparison to incumbent polyester-epoxy materials used in these applications, the findings to date for the seed oil modified systems indicate the following advantages: 1) control of gloss can be obtained and desired matte-like finishes produced, 2) faster cures at lower temperatures which may provide utility in coating heat sensitive substrates, such as wood, 3) lower viscosities which would provide improved substrate wet out and 4) improved scratch resistance, a desirable property for many applications. In addition to these performance improvements lower costs for hybrid powder systems may be ultimately possible for the global powder coatings market of which hybrid systems account for 50% of the materials used.