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more PVA questions



I bought some locally manufactured PVA about 2 years ago ($105 for 5 gallons
from Atwood Adhesives), and it seemed fine, but the material data sheet
doesn't provide any specific information about the formula or additives.
The pH range is listed as 4.4 to 5.0, and it does contain "trace components
of formaldehyde and acetaldehyde".  I'm getting to the end of my supply, and
plan to order more PVA soon.

Does anyone know who manufactures Jade 403?  Is it significantly better than
what I've described above?  I've heard that it's a preferred PVA among
bookbinders.

Delia Floor
Seattle, WA

----- Original Message -----
From: "Judy Christensen" <dracaena@WORLDNET.ATT.NET>
To: <BOOK_ARTS-L@LISTSERV.SYR.EDU>
Sent: Sunday, October 15, 2000 9:25 AM
Subject: TUNDRA PVA


> The answer is, it's probably not archival.
> PVA-polyvinyl acetate comes in all different brands & qualities.
> Whether it's archival or not has to do with the quality of the chemicals
in
> it. For example, concrete glue is PVA. It dries yellow, it's inexpensive
and
> the quality of the chemicals tend to be less refined. Also true of the
> Elmers you get at the dime store.
> What you pay for with the PVA you buy that guarantees that it's archival
is
> an assured quality of the chemicals in it.
> Jim
>
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             ***********************************************
            BOOK_ARTS-L: The listserv for all the book arts.
      For subscription information, the Archive, and other related
            resources and links go to the Book_Arts-L FAQ at:
                      <http://www.philobiblon.com>
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