Re: Kodalak/amyl acetate


Kevin O'Brien (kob@paradise.net.nz)
Mon, 12 Apr 1999 12:05:50 +1200


Liquitex is only one of the acrylic polymer emulsions available. It is
already relatively 'dilute' and not my preferred painting medium. Adding
water reduces film formation giving a duller appearance. A matte medium can
be made from it undiluted by adding the appropriate agents.

The matte acrylic protective spray used by pastel painters is already
formulated as a protective coating for art work. A useful way is to use the
clear shiny version first, then give it an overcoat with matte to get the
desired sheen. The process can be repeated: dull can be made shiny and vice
versa. The best artist grade products are almost indetectable. I believe
that they are also acceptable to conservators. Linseed oil and other such
varnishes yellow and harden with age. These modern acrylics are not
formulated to behave that way.

Kevin O'Brien

> I have tried "highly dilute," lowly dilute & medium dilute in gloss &
> non-gloss and everything else ... yuck. To get enough to affect the look
> coats the paper whites in a greasy manner & glares, which has been pretty
> much the pattern. (Maybe Demachy's paper was different enough from mine to
> respond in a different way, maybe.) Charles's & Jan's comments about
> shellac are what I didn't think of. Kremer sold me dark orange &
> it sat around until I tried it, then threw it out. White shellac sounds
> worth a try...



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