Iyini ikambiso ye-Phthalic Anhydride ngomkhiqizo we-Maleic Anhydride?

Ikambiso yomkhiqizo we-Phthalic Anhydride
Lokha nakwenziwa i-phthalic anhydride ukusuka ku-xylene, I-Maleic Anhydride ngumkhiqizo (~5% we-phthalic anhydride output). Ngesikhathi sokukhiqizwa kwe-phthalic anhydride, irhasi yomsila wokuphendula iyahlanzwa ukususa izinto eziphilako; uketshezi lokugeza (oluqukethe i-maleic anhydride, inani elincani le-benzoic acid, kanye ne-phthalic acid) luhlanganiswa, luhlanjululwe, begodu lufudumele ukuze luphelelwe ngamanzi—okwenza imikhiqizo ye-maleic anhydride.

Kubayini ukhetha i-Maleic Anhydride? Ngumgogodla we-polyester resin ephezulu, begodu ivula amakhemikhali ahlukahlukeneko (i-BDO, i-THF, njll.). Sithumelele umlayezo nje ukuhlola iinsombululo ze-MA ezilungiselelwe ibhizinisi lakho!