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  1. european chemicals agency (echa). (2021). reach regulation ¨C candidate list of substances of very high concern (svhc).
  2. u.s. environmental protection agency (epa). (2020). chemical data reporting (cdr) for organotin compounds.
  3. ÖлªÈËÃñ¹²ºÍ¹úÉú̬»·¾³²¿. (2022). ¡¶ÖØµã¿ØÖÆ»¯Ñ§Æ·Çåµ¥£¨µÚ¶þÅú£©¡·.
  4. oertel, g. (2015). polyurethane handbook, 3rd edition. hanser publishers.
  5. szycher, m. (2018). szycher’s handbook of polyurethanes, 2nd edition. crc press.
  6. zhang, y., et al. (2020). development of non-tin catalysts for polyurethane sealants. journal of applied polymer science, 137(12), 49352.
  7. liu, j., et al. (2019). bismuth catalysts in waterborne polyurethane systems: a comparative study. progress in organic coatings, 135, 225¨C233.
  8. kissin, y. v. (2008). catalysis of polyurethane formation: mechanism and kinetics. advances in polymer science, 217, 1¨C45.
  9. wang, h., et al. (2021). delayed catalysts in structural adhesives: performance and application. international journal of adhesion and technology, 34(5), 801¨C812.
  10. georgiadis, a., et al. (2017). non-toxic catalysts for polyurethane foams: a review. polymer international, 66(4), 455¨C466.

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