On Tue, 26 Aug 2003 17:19:53 -0400, "Ron Natalie"
wrote:


clare @ snyder.on .ca wrote in message ...
On Tue, 26 Aug 2003 10:27:10 -0400, "Ron Natalie"
wrote:




There are several kinds of polystyrene insulation board. Usually
referred to as Styrofoam and Styrofoam SM in the construction trades
up here in Canada.

Dow's trademark Styrofoam applies strictly to extruded polystyrene (and
in Dow's case it's blue, also a trademark of Dow). The pebbly white stuff
used for coffee cups and coolers is expanded polystyrene and is a misuse
of the trademark.

Check your facts. Dow made and sold white expanded "beadboard"
insulation under the Styrofoam label for years in Canada, and then
introduced Styrofoam SM rigid foamboard to the market. The SM was to
differentiate between 2 products.I believe Morval Durofoam used Dow
supplied styrene to produce the blown foam coolers and other "expanded
styrene"" products . They now also have an SP.

http://www.dow.com/styrofoam/na/about/regtm.htm

Dow does not make the disposable foam products. That I agree with.
They DID and possibly still do make white beadboard insulation panels,
and white craft foam under the styrofoam name. They were sold here in
Canada, whether they were made in the USA or not I don't know, or
particularly care.

I have documented it well enough. I have used enough of it over the
years, back in the sixties already, when all you could get was the
beadboard type Styrofoam up here in the cold white north.
It had "Styrofoam" and "DOW" printed on it in blue ink.