Other (inherent) Paint Deficiences
Exuding MediumThe separation out and collection of medium on the surface of the paint, forming a (locally) shiny film. Often the medium will become liquid and can penetrate to the reverse of the canvas, making it appear 'wet' in patches that follow the forms in the painting.
Related termsMedium separation
COMMENT: COMMENT: The exudation of medium can result in the collapse of sharp impasto features underneath the medium film and when removed leave the paint with a rubbery appearance.
LiteratureTank Bronken I.A., Boon J.J., Hard dry paint, softening tacky paint, and exuding drips on Composition (1952) by Jean-Paul Riopelle, 2014, in: Issues in Contemporary Oil Paint, pp 247-262
Boon J.J., Lister K., Investigating aged oil-medium phase separating and exuding as drips from a 1960s painting by Pierre Soulages, 2014, in: Preprints of the ICOM-CC 17th Triennial Conference, Melbourne, 15-19 september 2014., art. 1317
Tumosa C.S., Mecklenberg M.F., Oil paints: the chemistry of drying oils and the potential for solvent disruption, 2013, in: New insight into the cleaning of paintings. Proceedings from the cleaning 2010 international conference Universidad Politécnica de Valencia and Museum Conservation Institute. Smithsonian Institution Scholarly Press, Washington, DC, pp 52-58
Corbeil M.C., Helwig K., Poulin J., Analysis of the painted Œuvre of Jean-Paul Riopelle: From oil to mixed media , 2004, in: Studies in Conservation vol. 49 (2004) sup. 2: 'Modern Art, New Museums: Contributions to the Bilbao Congress , pp 170-173
Bayliss S., van den Berg K.J., Burnstock A., de Groot S., van Keulen H., Sawicka A., An investigation into the separation and migration of oil in paintings by Erik Oldenhof, 2016, in: Microchemical Journal vol. 124, jan 2016, pp 974-982
Other (inherent) Paint DeficiencesDripping
Wet (Non-drying) Paint