Workshop on modern resins for varnishing and retouching

Workshop

"Modern Resins for Varnishing and Retouching"
Stichting Restauratie Atelier Limburg (SRAL)
Maastricht
The Netherlands
14-17 June 2016

By Jill Whitten, Robert Proctor and Rene de la Rie

Lecturers:

    Jill Whitten and Robert Proctor have been in private practice in
    Houston, Texas since 1998.

    Rene de la Rie, University of Amsterdam and CRCC, Paris

Overview: Many different materials have been used for varnishing and
retouching.  Traditionally, natural resins were primarily used for
this purpose.  In the 20th century synthetic polymers were
introduced.  These are often chemically and physically more stable
than their natural counterparts.  The optical properties of
varnishes are however largely controlled by their molecular weight.
By using synthetic low molecular weight resins for varnishing and
retouching, an appearance similar to that obtained using natural
resins can be achieved.  Factors affecting stability and appearance,
as well as application methods and solvents suitable for these new
resins, will be discussed.

Workshop: The workshop will focus on synthetic low molecular weight
resins and how they differ from polymers and dammar.Participants
will use practical sessions to evaluate the properties of resins
used as varnishes in terms of their application and appearance.
Through these practical sessions and demonstrations, participants
will establish how the choice of resin, solvent or stabilizer will
affect the properties of the varnish not only on application but
subsequently upon ageing.  Participants will leave the master class
with an individual canvas board (50x40cm) on which at least 15
varnish recipes have been tested.

Lectures will cover:

    Function of varnishes

    Chemical properties of resins and their degradation

    Factors affecting optical characteristics of varnishes

    Effects of stabilizers

    Retouching media

    Criteria for choosing appropriate varnishes

    Varnish application techniques

    Solvent selection: polarity, solvent strength and evaporation
    rates

Workshop fees (including lunches: Standard: EUR 775,00

Deadline for registration May 1, 2016

Student: EUR 550,00

On limited places.  Application after May 1, 2016

Deadline June 1, 2016

Registration forms are available at info<-at->sral<.>nl

Numbers are limited to 20 participants and are
allocated on a first come basis.

Organisers: Kate Seymour and Siska Losse


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