| Issue | Description | Consequence | |-------|-------------|--------------| | | Xylene/acetone can re-dissolve underlayers of acrylic paint or ink. | Lifting or bleeding of underlying media. | | Incomplete Reversibility | After 5+ years, crosslinking occurs; removal requires stronger solvents (e.g., toluene). | Potential damage to delicate substrates. | | Yellowing over decades | While better than damar, ketone resins yellow slightly under UV exposure. | Whites and cool tones warm. | | Brittleness | Low-molecular-weight resins become brittle with age. | Cracking on flexible supports (canvas). | | Aerosol Overspray | Fine droplets drift onto non-target areas. | Dusty residue on frames or adjacent works. |
An Examination of Krylon Kamar Varnish: Composition, Application, and Suitability for Fine Art Conservation krylon kamar varnish
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