Isicelo:

I-Toluene diisocyanates isetshenziswa ngokuyinhloko ukwenza amagwebu e-polyurethane aguquguqukayo ukuze asetshenziswe ifenisha, izingubo zokulala, nezihlalo zezimoto nezezindiza. Okunye, ukusetshenziswa okuncane okwenzelwe ama-polyurethane elastomers (okumakhava obhampa bezimoto, amarola ezimboni, amasoli ezemidlalo namabhuzu, kanye nezimpahla zemishini) kanye nama-coatings (okulungisa izimoto, ukuqedwa kokhuni, kanye nezingubo zokulwa nokugqwala ezisebenza kahle kakhulu)(ICIS 2009). Igwebu le-toluene diisocyanate-based rigid polyurethane isetshenziswa eziqandisini zasendlini kanye nasezindaweni zokuhlala noma uphahla lwezentengiselwano ebhodini noma kwifomu le-laminate (IARC 1986). Igwebu eliqinile elithi “Fafaza-ngaphakathi” lisetshenziswa njengokuvala ama-trailer amaloli, izimoto ezithwala impahla zikaloliwe, kanye neziqukathi zempahla. Ama-alkyd ashintshwe nge-polyurethane aqukethe cishe u-6% kuya ku-7% isocyanate, ikakhulukazi i-toluene diisocyanate, futhi asetshenziswa njengezinto zokumboza, njengokuqedwa kwaphansi, ukuqedwa kwezinkuni, nopende. Izingubo zokupholisa umswakama zisetshenziswa njengezivalo zokhuni nokhonkolo kanye nokuqeda phansi. Izindiza, iloli, kanye nezingubo zemoto yabagibeli ngokuvamile zakhiwe ngamasistimu e-toluene disocyanate prepolymer. Ama-urethane elastomer asetshenziswayo asetshenziswa ezinhlelweni ezidinga amandla, ukuguquguquka, nokumuncwa ukushaqeka, futhi amelana nowoyela, izinyibilikisi, nemisebe ye-ultraviolet. Asetshenziswa kumakhompiyutha okunamathiselayo kanye nama-sealant nasezingxenyeni zemoto, amasoli ezicathulo, amasondo ama-rollerskate, ama-pond liners, nezikhwama zegazi. Zibuye zisetshenziswe amasimu anoil kanye nezimayini. Imikhiqizo ethile ye-elastomer ikhiqizwa kusukela ku-isomer emsulwa engu-2,4 kunengxube engu-80:20.

Amaqembu asebenzayo ku-TDI asabelana namaqembu e-hydroxyl ukuze akhe ukuxhumana kwe-urethane, okusetshenziselwa ukwakhiwa kwamagwebu e-polyurethane aguquguqukayo ukuze asetshenziswe ifenisha, izingubo zokulala, kanye nezihlalo zokuhamba zezimoto nezentengiso. Okunye ukusetshenziswa kufaka phakathi ama-polyurethane elastomers asetshenziswa kumakhava obhampa wezimoto, amarola ezimboni, izicathulo zemidlalo, kanye nempahla eyimishini kanye nama-coatings (insimbi, ukhuni, kanye nezingubo zokulwa nokugqwala kokusebenza okuphezulu). I-TDI-based rigid polyurethane foam isetshenziswa eziqandisini zasendlini kanye nokwakhiwa kwezindawo zokuhlala ezifana nokufulela nokufulela ezohwebo. Igwebu eliqinile le-TDI elifuthayo lisetshenziswa njengokuvala ama-trailer amaloli, izimoto ezithwala impahla zikaloliwe, kanye neziqukathi zempahla zaphesheya. Izingubo ze-TDI eziqeda umswakama zisetshenziswa njengezivalo zokhuni nezikhonkolo kanye nokuqeda phansi.