Iyini inqubo ye-Phthalic Anhydride By Product Maleic Anhydride?

Inqubo Yomkhiqizo Ohlukile we-Phthalic Anhydride
Lapho kukhishwa i-anhydride ye-phthalic kusuka ku-o-xylene, i-anhydride ye-maleic iwumkhiqizo ophumayo (~5% womkhiqizo we-anhydride ye-phthalic). Ngesikhathi sokukhiqizwa kwe-anhydride ye-phthalic, igesi yomsila wokusabela iyagezwa ukuze kususwe izinto eziphilayo; uketshezi lokugeza (oluqukethe i-anhydride ye-maleic, inani elincane le-benzoic acid, kanye ne-phthalic acid) luyaqiniswa, luhlanzwe, futhi KUHLEincishisiwe ukuze ikhiphe amanzi emzimbeni—iveza imikhiqizo ye-anhydride yama-maleic.

Kungani ukhetha i-Maleic Anhydride? Iwumgogodla wama-resin e-polyester angagcwele aphezulu, futhi ivula amakhemikhali ahlukahlukene angaphansi (i-BDO, i-THF, njll.). Sithumelele umyalezo manje ukuze uhlole izixazululo ze-MA ezenzelwe ibhizinisi lakho!