40684
Accession Number
25817
Editor
Mills, John S.; Smith, Perry
Title Of Article Chaper
A further examination of the barrier properties of Tinuvin 327 ultraviolet absorber in the protection of dammar films
Title Of Journal Book
Cleaning, retouching and coatings: technology and practice for easel paintings and polychrome sculpture: preprints of the contributions to the Brussels Congress, 3-7 September 1990
Pages
165-167
Collation
3 figs., 2 tables
Reference Bibliography
Includes 6 bibliog. refs.
Publisher
International Institute for Conservation of Historic and Artistic Works
Publisher City
London
Language Of Text
English
Language Of Summary
English
Literature Type
Monograph : Proceedings
Literature Level
Analytic
Meeting
The International Institute for Conservation of Historic and Artistic Works Brussels Congress
Meeting City
Brussels
Abstract
The testing of the barrier efficiency of a commercial-grade ultraviolet (UV) absorbing compound, Tinuvin 327, manufactured by Ciba-Geigy, within an acrylic resin surface coating, Acryloid B72 (Röhm & Haas), is reported. The technique for screening dammar resin surface coatings is reiterated in light of recent literature on the aging characteristics of dammar resin. Some of the original samples from the 1987 project were reexamined using a spectrophotometer after 30 months of dark storage. All of the UV absorbers exhibited an insignificant but measurable decrease in efficiency. Speculation about long-term volatility and possible loss of efficiency is put forward concerning Tinuvin 327. Alternative UV-absorbing compounds are suggested.
Keywords
barrier;Tinuvin;ultraviolet;protection;dammar;film;resin -- CAL
pub_id
40684
Meeting Date
19900903-19900907