G’day; (Sorry, I’m addicted & obsessed and can’t restrain myself)
Acrylic plastics cannot be dyed when not in their original liquid
form. Materials like solid Perspex (Methyl methacrylate, Lucite to
Americans) are homogenous and virtually impervious to dyeing. Painting,
yes. Surface colouring using certain solvent based dyes and pigments,
yes. But not dyed. However, you can buy acrylic (and other) resins in
liquid form which when mixed with appropriate dyes and/or pigments and
the proper catalyst, become solid with the colour homogenous
throughout the material, transparent or opaque according to what is
What, you (well, some of you) ask, is the difference between a dye
and a pigment? Well, simply put, a dye will dissolve in some suitable
liquid; a pigment won’t. Dyes transmit light, pigments are opaque.
Thus; Wad (the blue material made from plants which the ancient
Britons once wore - bit cold, eh?) is a DYE So is black current juice
and blackberry juice and cochineal. Whereas ultramarine blue is made
from very finely ground lapis lazuli and mixed with oils as a PIGMENT.
(Leaned Ad Vine used it) So, to sum up, you DYE a piece of cloth, and
PAINT a house. But to thoroughly confuse the issue, you can paint your
nails with a transparent or an opaque paint!!! Isn’t English fun?
Bah, humbug. But Cheers anyway, – John Burgess