Yini indlela ye-acetylene yekulungisa i-maleic anhydride kusuka ku-1,4-butanediol?

Indlela ye-acetylene ye-1,4-Ibhuthanediyoli kulungiselela i-maleic anhydride.

Kwekucala, i-acetylene ihlangana ne formaldehyde lapho khona kunesikhutsato se Cu-Bi ku 98kPa na 80-95°C kukhicita i1,4-butynediol. Ngemuva kwaloko, i-1,4-butenediol iyahlanganiswa ibe ngu 1,4-butenediol ngaphansi kwekukhutsata kwe nickel yematsambo ku 1.372-2.06 MPa kanye na 50-60°C. Ngemuva kwaloko, lokunye lokukhutsatako kwekukhicita emanti (13.7-20.6MPa, 120-140°C) kwentiwa nge Ni-Cu-Mn/Al2O3 kwenta i1,4-butanediol. Ngemuva kwekususa ema ions ensimbi nge resin yekushintja ema ion, i1,4-butanediol lehlantekile itfolakala ngekuvutshela kanye nekuhlanjululwa.

Kungani ukhetsa i-Maleic Anhydride? Ngumgogodla wema resin e polyester langagcwaliswa lasetulu, kanye nekuvula emakhemikhali lahlukahlukene lasehla (BDO, THF, njll). Sitfumele umlayeto nyalo kute uhlole tisombululo te-MA letilungiselelwe ibhizinisi lakho!