>Dave Williams wrote: >> What does "isophthalics" mean? >> >> What does "orthophthalics" mean? Dave Kruger gave us the chemistry side. What it means to us mere mortal paddler types is that isophthalic polyester is stronger (and more expensive) than orthophthalic resin. I think there is more crosslinking between the molecules in iso than with ortho. Could be some other characteristics are better also, but Dave K would be the guy to quiz about that <grin>. Vinylester is even better yet (and more expensive still) and some epoxies are the best (and often *lots* more expensive. Iso is a bit newer than ortho and vinylester is newer still. Epoxy has been around for quite a while, too, but many of the newer ones are better than the old originals. Hank Hays Lightning Paddles *************************************************************************** PaddleWise Paddling Mailing List Submissions: paddlewise_at_lists.intelenet.net Subscriptions: paddlewise-request_at_lists.intelenet.net Website: http://www.gasp-seakayak.net/paddlewise/ ***************************************************************************Received on Mon Dec 21 1998 - 08:16:17 PST
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