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Subject: Flaking oil paint on paper

Flaking oil paint on paper

From: Teresa Fernanz de de Bobadilla <teresa>
Date: Wednesday, January 21, 2004
Kate Lowry <kate.lowry [at] nmgw__ac__uk> writes

>We are currently trying to devise a treatment for a late 18th
>century oil on paper. The dark areas of paint have been coated with
>a resin or gum by the artist to improve saturation of the colour.
>This has resulted in the development of a fine cracklure in these
>areas accompanied by minute flaking and paint loss.
>We are hoping to consolidate the paint and prevent further paint
>loss, but it is impossible to touch the paint surface without
>causing further damage. So far we have tried the application of CMC
>in water and methylated spirit using a nebuliser. However very
>slight blanching occurred in the small area we treated, suggesting
>that the use of this adhesive in these solvents are not suitable for
>this work. Does anyone have any experience of treating a work with
>this kind of problem and/or suggestions as to other
>adhesives/solvent systems we might try, bearing in mind that it
>would need to be suitable for use in a nebuliser.

I have found that consolidating with Japanese algae funori, which
could be diluted and placed in the nebuliser, is quite effective but
is even better if you have access to a vacuum table.  The
effectiveness depends of the thickness of paint layer.  Also,
consult with paintings conservator. They consolidate paint by facing
with tissue, and [pulling] purified animal glue through it (you
could consider gelatine), with local application of moderate heat to
aid penetration and then they remove the facing paper by humidifying

                  Conservation DistList Instance 17:52
                 Distributed: Sunday, February 1, 2004
                       Message Id: cdl-17-52-004
Received on Wednesday, 21 January, 2004

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