needed to reply, the polyurethane low expansions foam bottles where gabriel refers to are from the past.
he probably thinks these aerosols are still using CFC but now these bottles are CFC free !!!
learn more on the internet or read here
(CFC = chlorofluorocarbons, harmful chemicals that eat away at the ozone. they were most commonly found in aerosol cans, but have since been linked to the degradation of the atmosphere)
and about PUR, PUR is everywhere, from car seats until your matress you slept last night.
the PUR filled KRAFTWERK chairs are made of CFC-free.