On Wed, 12 May 2004 16:03:19 -0000, Bill Tuthill
wrote:
riverman wrote:
Sounds like Royalex is a tradename for polypropylene. Is it?

ABS = acrylonitrilebutylstyrene Definitely not polypropylene.
Royalex is a tradename owned by Uniroyal. ABS, Royalex, and several
others are similar, but not identical, sandwiches of ABS plus foam
plus a vinyl, colored outer skin. Tom McCloud