2. Polyurethanes (PUs)
2.1 General
Polyurethanes were discovered in the 1930s by Otto Bayer, who carried out a polyaddition of various diisocyanates with glycols or diamines. PUs were used to replace natural rubbers during the Second World War . Worldwide production is estimated at 25.62 million tonnes in 2023
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Polyurethanes (PUs)
PUs for bonding
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