Conservar Varnish

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Conservar Varnishes

Conservar varnishes are a series of isolating and final picture varnishes and varnish kits based on materials and formulations used in current conservation practice. All these varnishes contain UV stabilizers

All Conservar varnishes contain hindered amine light stabilizers (HALS) or UV stabilizers. These act by interfering with oxidation reactions in the varnish that cause embrittlement and aging of the varnish. By incorporating HALS in Conservar varnishes a much more stable varnish is obtained. Accelerated aging experiments indicate that the lifetime is extended greatly. Monitoring of natural aging so far indicates that the stabilizer works as predicted by accelerated aging.

The HALS used in Conservar prolongs the lifetime of the varnishes dramatically. HALS are stable by themselves for a number of years, but once mixed with varnish in solution they are best used within a short period. For this reason we offer Conservar as kits so that all ingredients can be mixed fresh for use immediately. For artists reticent about preparing their own varnishes, we have also made these varnishes available as ready-made solutions in metal cans for maximum longevity and with the date of production printed on the label. The date lets artists know that they should use the varnish as soon as possible for best results.

Conserver Picture Varnish

Conserver Picture Varnish is a colorless, reversible varnish made from hydrogenated hydrocarbon (Regalrez) resin dissolved in pure, low-aromatic solvent and UV absorber and stabilizer. Conservar will not cross-link or yellow over long periods of time—much longer than natural resin varnishes. Conservar achieves optimum wetting of the paint surface to enhance colors, has minimum solvent action on paint, and maximum resin content for best coverage. It dries to a film that levels well and can be rubbed when dry just like traditional mastic or dammar varnishes.

References

E. Rene de la Rie and Christopher McGilinchey, “New Synthetic Resins for Picture Varnishes”, IIC Preprints to the Brussels Congress, pp. 168-173.1
Robert L. Feller, “Standards in the Evaluation of Thermoplastic Resins”, Preprints of ICOM in Zabreg (1978), pp. 78/16/4.

Picture Cleaning Kit

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Mini Picture Cleaning Kit

The Mini Picture Cleaning Kit contains supplies for removing surface dirt and the oxidation products from both unvarnished and varnished oil paintings. It contains both dry cleaning and aqueous cleaning materials.

Included in the Mini Picture Cleaning Kit:
Cotton-tip Applicators
Cotton Balls
Dry Cleaning Sponge (small)
Micro-Mesh Sheet
Picture CleanGel (4 fl oz)
Purified Deionized Water (4 fl oz)
Odorless Mineral Spirits (4 fl oz)

Dusting and Dry Cleaning Paintings

There are several methods to clean paint surfaces including the use of a soft hair brush to brush away dust into a vacuum.

If these methods do not clean a paint surface well enough, the next step is to use dry cleaning methods that clean the surface more aggressively. Using materials such as a microfiber cloths and dry cleaning sponges, you can safely remove dirt from the surface of the painting. If dusting and dry cleaning methods do not succeed in removing soil from paint surfaces, only then use an aqueous cleaning method.

Mini Picture Cleaning Kit
The Mini Picture Cleaning Kit contains supplies for removing surface dirt and the oxidation products from both unvarnished and varnished oil paintings. It contains both dry cleaning and aqueous cleaning materials.

Aqueous Cleaning Methods

Picture CleanGel is a solvent-free aqueous gel cleanser that is gentle to both varnished or unvarnished paint surfaces. The gel cleanser is designed to remove soil, proteinaceous and carbohydrate materials from varnished and unvarnished oil paint surfaces. It is also useful as a cleaner for paintings that have collected dirt and dust immediately prior to varnishing.

Read Tutorial for Picture Cleaning