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Wednesday, October 30, 2019

Linseed Oil: Conversion to Biodiesel As Paint Vehicle/ Binder

The thinned transesterified  product yields a paint dry-to-touch overnight. Film formation is seen in two days at 20 deg C.

Residual glycerol aids brush flow and some di-glyceride serves as a non-ionic surfactant.
For use as a fuel, the biodiesel must be washed and dried. For paint formulation, I tap off the lower glycerol layer and use the top layer directly with pigment mulling.

A commercial oil pastel (red hue) blended with biodiesel and  emulsifying wax . After warming, the mixture is cooled to 20 deg C yielding a smooth, liquid paste , easily applied to card stock with brush.

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