[Kwiatostan]

Hello,

any idea how I can calculate the number of urethane and urea bonds in polyurethane knowing just hydroxyl and amine number (mg KOH/g) of a polyol I obtained recycling the polyurethane with di-n-buthylamine and diethylene glycol/dipropylene glycol mixture?

Mass of substrates and products is known as well.

Many thanks,
Artur