I believe Magna Colors were made from pigments mixed in Acryloid F-10 (n-butyl methacrylate). The composition of Soluvar varied over the years from pure Acryloid B-67 to a mixture of Acryloid B-67 and Acryloid F-10. Acryloid B-67 is originally soluble in a mixture of about 85% aliphatic and 15% aromatic hydrocarbons. The solubility will change with time due to crosslinking. Acryloid F-10 is reported to be more stable than Acryloid B-67 and should dissolve in a similar mixture with a slightly lower aromatic concentration. I have encountered paintings varnished with Soluvar that, after 20 years of aging, required an equal mixture of Naphtha and Xylene to remove. I would be very interested in what you discover is the lowest aromatic concentration needed to remove 30 year old Soluvar. Thanks, Robert Proctor ––––––––––––––––––––––––––––––––– Whitten & Proctor Fine Art Conservation 1236 Studewood Street Houston, TX 77008 Phone/Fax: 713-426-0191
****** Unsubscribe by sending a message to [email protected] Searchable archives: http://cool.conservation-us.org/byform/mailing-lists/cdl/
