: "Kevlar" is merely DuPont's trade name for para-aramid
: fiber. "Twaron" is a similar product from another
: manufacturer.

: No, it's completely different. Spectra is a polyethylene fiber,
: which is why it's so slippery and hard to knot or bond to.

: Not exactly. "Dyneema" is the trade name of the original
: polyethylene fiber developed by Hoescht-Celanese in Europe.
: Honeywell (formerly Allied Signal) licensed the manufacturing
: rights in the US and named their product "Spectra".
: They're the same product from different sources and should be
: considered interchangeable.

See I knew someone would have the straight scoop.

At least I was right on kevlar being an aramid fiber ( though I got the trade name and fibre name reversed) and carbon being well, carbon and being separate products :)
remind be to resist posting when it is late and I am to lazy to look up my facts first.