Gamvar Picture Varnish

Description

[Gamblin Artists Colors, Portland] A brand name for a synthetic picture varnish based on Regalrez low molecular weight hydrocarbon resin. Gamvar Picture Varnish was formulated based on research conducted in the Conservation Department of the National Gallery of Art, Washington. It contains 35% Regalrez (35% solids by weight) dissolved in Mineral spirits with the addition of Tinuvin 292 (2%) hindered amine light stabilizer and Kraton® G 1652 rubber (1-3%) for added flexibility.

Risks

• Gamblin: SDS

Physical and Chemical Properties

• Appearance = colorless, transparent liquid
• Boiling point = 185-211 C
• Density = 0.75 g/ml

Resources and Citations

• Gamblin Artists Colors: Website
• R.de la Rie "Polymer Additives for Synthetic Low-Molecular Weight Varnishes" ICOM Preprints, Washington, DC 1993, pp. 566-573.
• Paintings Specialty Group, Painting Conservation Catalog, Wendy Samet (ed.), AIC, Washington, DC, 1998
• Conservation Support Systems, Catalog, 1997