Looking for information/material sources for making polyurethane foam

NBR with PVC foam rubber is better for Gasket.

You might find a cellulose based foam is more environmentally viable. Urethan comes from oil and the cost will go up.

As time goes by they are getting better and better at cellulose foams.

Google it

PU Foam is bad for body--no ventilation.

Could have been OK in pre-Central Heating days. Maybe still OK as seat cushions in Cars/Buses running on potholed "Roads"

Central America -Employment Generation-Lowtech-Body-friendly- Green Solution needed?

Answer-- my Wonderchair & Wonderbed.There can be no better comfort and healthy seating/sleeping. Made from Bamboo Slats bound low-tech by fingers to light Steel frame---Green Solution/Recyclable/Biodegradable after 20+ years' happy Cushionless use!

Want to know more?

The Wonderchair---Plain,Rocking,Armed,Headest-fitted ,study-desk variation=2>4Kg

The Wonderbed(Single)=6Kg--(Double)=10Kg

All weights above 50:50 Steel:Bamboo.

There is no other improvement likely in sight.

Since no one has answered the question you posted, I'll give it my two cents worth.

The two biggest suppliers of urethane systems I can think of are BASF and Bayer.

Both are worldwide but based in Germany.

These two produce raw materials but also fully formulated systems. There is also a fair amount of work currently being done with using soybean derived polyols and of course, castor oil polyols should you want a partial green product.

I told you----PU is bad for you--and wrong project for you.

If you still must go for "Soft Modernity" and false ideas about 'Comfort' and you want to know about prices--you can get some low ones from

www.penopoliuretan.com/price.htm Pena in Russian=Foam. Pricelist in Roubles

This is a Russian Supplier--will supply also the Isocyanates&Polyols.

Routtand in Europe arethe best for Shoe sole mouldings.

If you want Large stocks-go to China. Search our patron GLOBALSPEC

Friends out there, I´ll take your two-cents worth of cyber wisdom any day. Thanks for the key words: isocyanates, polyols, Bayer, and link to russian PU.