Primers can be very different or not so different from paint. There are many
different types of primers.

Some primers work by penetrating and consolidating the substrate so that the
paint has a more solid surface to bond with. Some chemically alter the
substrate, setting up an intermediate layer capable of chemically bonding to
a difficult substrate while providing a surface that paint can bond to more
easily. Some emulsify oils in oily substrates. Some are strictly thinned out
paint that penetrate and grab a little more efficiently. Some are designed
to form tight films so that stains from tannins in wood do not bleed through
and stain the paint. Some turn iron oxide into iron phosphate, a tighter,
more sound metallic surface.

Edison Coatings, Inc.
M. P. Edison
President
3 Northwest Drive
Plainville, CT 06062
Phone: (860) 747-2220 or (800)697-8055
Fax: (860)747-2280 or (800) 697-8044
Internet: www.edisoncoatings.com
E-Mail: [log in to unmask]

---------- Original Message -----------
From: Ruth Barton <[log in to unmask]>
To: [log in to unmask]
Sent: Sun, 26 Oct 2003 12:58:36 -0800
Subject: Here's a good paint question

> This was asked on another list I'm on.  I have been wondering about this
> myself.  Anyone here have an answer?  Thanks, Ruth
>
> What are the contents and formulation of primer that make it
> different than finish paint?  I compared the contents by percentage
> of a can of primer and a can of paint and a can of primer and there
> seemed to be only a slight difference between the 2.  I suppose the
> fact that it was different brands of each could have something to do
> with it but it made me curious.
> --
> Ruth Barton
> [log in to unmask]
> Dummerston, VT
>
> --
> To terminate puerile preservation prattling among pals and the
> uncoffee-ed, or to change your settings, go to:
> <http://maelstrom.stjohns.edu/archives/bullamanka-pinheads.html>
------- End of Original Message -------

--
To terminate puerile preservation prattling among pals and the
uncoffee-ed, or to change your settings, go to:
<http://maelstrom.stjohns.edu/archives/bullamanka-pinheads.html>