Re: [Paddlewise] Weldwood contact cement vs. Perception marinecontact cement

Dave Kruger wrote:
>
> News to me (someone said this -- maybe Sprenne) that Weldwood is
> proto-neoprene.  If it is, all the more reason to expect it to work on
Hypalon
> (which is neoprene)
>
Ummm.  Hate to correct you, Dave, but Hypalon is *not* neporene.
http://www.tamparubber.com/mainprop.htm   and
http://www.dupont-dow.com/products/hypalon/default.html
indicate that Hypalon is Chloro-sulfonated polyethylene

Neoprene is polychloroprene
http://www.dupont-dow.com/products/neoprene/default.html

both are synthetic rubbers, and each one can likley be formulated to
resemble the physical properties of the other, though their properties in
organic solvents probably differ.

While your Weldwood gluing of a keel strip on a hypalon hull is working so
far - and may last a long time - I'd hesitate to use Weldwood for a
structural Hypalon adhesive joint.

Regards,
Erik Sprenne

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