On Apr 8, 2016, at 3:11 PM, Tom Gardner <t.gardner
at computer.org> wrote:
Sorry, to a EE they are all epoxies, but:
"BINDER: A polymer such as polyester-polyurethane used to bind magnetic
particles together and adhere them to the base film in the manufacturing of
magnetic media."
http://www.fujifilmusa.com/shared/bin/Magnetic_Media_Terminology.pdf
"Polyester polyurethane is the workhorse of polyurethane films. It offers
excellent strength and long-term stability"
http://www.apiusa.com/polyesterpolyure.html
I think properly cured all binders used are pretty stable.
That may be, but if so, there are some big name vendors who do not know
"properly".
paul