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9679Re: [PPLetterpress] Re: Inks

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  • Lisa Davidson
    Apr 10, 2008
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      from a MSDS for Copper Plate Oil at

      Any cloths or rags soaked
      in oil should ideally be burnt.

      On Apr 10, 2008, at 10:52 AM, Peter Fraterdeus wrote:

      > Perhaps the important question is the volatility of the fractions
      > which will evaporate as the ink dries.
      > Heavier, less refined, oils (hydrocarbons) evaporate much more
      > slowly, are not inflammable (will not ignite as vapors)
      > So, boiled linseed or hemp oil, the most ancient of ink vehicles,
      > can be mixed directly with pigments without solvent, and will take
      > a very long time to dry. With other solvents and driers added the
      > ink becomes less stiff, and dries more quickly, as the volatile
      > fraction evaporates...
      > Disclaimer: I'm not an ink scientist!
      > P
      > At 5:13 PM +0000 10 04 08, okintertype wrote:
      > >In simple terms, ink, like paint, is composed of pigment, vehicle
      > >(resin) and solvent in varying degrees and types. If the solvent is
      > >not water, then it is a hydrocarbon (compounds containing hydrogen
      > >and carbone). The resins are always hydrocarbons. Pigments can be
      > >hydrocarbons or inorganic (no carbon present). I guess what you want
      > >to know does dried ink contain hydrocarbons. The answer is yes.
      > >Stan
      > --
      > AzByCx DwEvFu GtHsIr JqKpLo MnNmOl PkQjRi ShTgUf VeWdXc YbZa&@
      > {ARTQ: Help stop in-box bloat! Always Remember to Trim the Quote!}
      > ExquisiteLetterpress http://www.slowprint.com

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