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  1. froehlich, d., et al. (2019). polyurethane catalysts: mechanism and applications. journal of cellular plastics, 55(3), 215¨C235.
  2. haddleton, d.m., & sands, m. (2020). green chemistry in polyurethane synthesis. green chemistry letters and reviews, 13(2), 89¨C102.
  3. bockisch, m. (2018). modern trends in polyurethane foam technology. springer materials science series.

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