On Tue, 26 Aug 2003 18:19:53 -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

The different parts of the Dow site put a slightly different twist on
this. A similar page on the craft part of Dow's site acknowledges that
they sold Styrofoam insulation that was in colours other than blue.

http://www.dow.com/craft/about/cup.htm
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