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![Polyurethane - Wikipedia, the free encyclopedia](https://www.iarticlesnet.com/pub/img/site/s_20.jpeg)
Polyurethane - Wikipedia, the free encyclopedia
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日期:2024-07-10
Polyisocyanates became commercially available in 1952 and production of flexible polyurethane foam began in 1954 using toluene diisocyanate (TDI) and ......看更多