Journal
GREEN CHEMISTRY
Volume 2, Issue 2, Pages 89-91Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/a909131i
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Aqueous solutions of sorbitol derived from biosustainable resources are converted by catalytic hydrogenolysis to a mixture of C-4-C-6 polyols for the synthesis of alkyds dagger employed in paint manufacture. Copper catalysts were selected because of their larger activity in the dehydroxylation reaction than in C-C bond breakage. Reactions at 180 degrees C under H-2-pressure in the presence of CuO-ZnO catalyst gave a 73% yield of C4+ polyols, and more specifically, 63% of deoxyhexitols. The mixture of polyols was effectively employed as a substitute for hydrocarbon-derived polyols in the synthesis of alkyd polymers.
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