Do any of the these from their website fit that profile?
> Various types of liquid polymers such as natural Latex, silicon, polyurethane and Teflon, as well as variety of textile fibres such as cotton, viscose and polyamide enable tailor-made fabrics for any need.
The theoretical advantage of biopolymers isn't just that they biodegrade, it's that they biodegrade into materials (like methane) which can form the feedstock for bacteria which in turn produce the biopolymers. This is better than paper underwear because the paper->CO2->tree->paper cycle is much slower.
Not necessarily, if the materials are chosen well you could recycle them. Not necessarily an improvement in terms of total energy use but worth evaluating.
I told my wife about this article expecting her to be very impressed and she said "so does that mean you have to take your pants off every time you change the panties?"
I wonder if they've solved for this already? There's only one photo of panties on the site that I can find and the style suggests they would require removal of pants. Not exactly fast, and potentially awkward in public restrooms.