Re: New platinum book & miscellaneous

Beakman (beakman@netcom.com)
Sat, 10 Dec 1994 15:51:17 -0800 (PST)

I originally wrote:

> >Finally, I use a dilute liquitex bath (after the print has dried). This
> >bath doesn't really add any perceivable gloss, but it does nake the
> >blacks richer, and therefore also seems to increase contrast slightly.
> >As fine art painters feel that this material is "safe" to use (with
> >regard to longevity, yellowing, etc.) on their paintings, I feel
> >comfortable usinging it on my prints.
>
> Bad news: Liquitex and other brands of acrylic dispersion gels may not be
> very permanent. Read on.
>
> "The discoloration can occur in any brand of acrylic media or gel, but is
> most noticeable in the unpigmented gels, matte, and gloss media. It is the
> result of a detrimental interaction between the support and the media"
>
> This, from p. 381 in James Hamm et al, "The discoloration of Acrylic
> Dispersion Media", _Saving the Twentieth Century: The Conservation of
> Modern Materials; Sauvegarder le XXe siecle: la conservation des materiaux
> modernes_ Proceedings of a conference, Sept. 1991, Canadian Conservation
> Institute, Ottawa, pp. 381-392.

Was there any specific information regarding which specific types of
"supports" had what type of "detrimental interaction"?

- David