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Dr_Strange
08-11-2001, 05:40 PM
I recently bought Stand Oil and on the label it also says Heat-Polymerized Linseed Oil...what does that mean?

Titanium
08-11-2001, 06:12 PM
Dr_Strange ,

[ Steven - Marvel Comics ]

Linseed Oil heated to 525 - 575 deg.F for x
hours in containers . With an inert atmosphere
pumped in to both remove the decompositional
gases and keep out oxygen.

The oil , forms many new compounds and larger
more stable oil chains. A molecular change says
Mayer .

Can be slightly thicker than Linseed oil , or thick
as honey or a gel .

Used for glazing and mixing mediums. Use very
very little in the top coat . Slow drier and makes
the oil look like an enamel . Will cause your brush
strokes to level.

Low in yellowing , strengthens you paint coat ,
raises the gloss .

For a more full explanation - see -
Ralph Mayer - The Artist's Handbook of Materials and
Techniques .

Historical - from Seatons - UK

Stand oils
Before the industrial revolution, stand oils were made
by placing the oil in large glass tanks exposed to sunlight
(in order to promote UV catalysed polymerisation). This
process was very slow, in some cases it took several
years to reach the required viscosity. The name "stand" oil therefore derives from the fact that the oil had to "stand"
in a tank for a long period of time.