He aha te tikanga acetylene mō te hanga maleic anhydride mai i te 1,4-butanediol?

Tikanga Acetylene mō te 1,4te whakarite i te -butanediol o te anhydride maleic.

Tuatahi, ka tauhohe te acetylene ki te formaldehyde i te aroaro o te whakakorikori Cu-Bi i te 98kPa me te 80-95°C hei whakaputa i te 1,4-butynediol. Kātahi ka whakakorikoria te 1,4-butynediol ki te 1,4-butenediol i raro i te whakakorikori o te nikara anga i te 1.372-2.06MPa me te 50-60°C. Muri iho, ka whakahaerehia he whakakorikori anō (13.7-20.6MPa, 120-140°C) me te Ni-Cu-Mn/Al₂O₃ hei hanga i te 1,4-butanediol. Whai muri i te tango i ngā katote whakarewa mā te kapia whakawhiti katote, ka whiwhihia te 1,4-butanediol parakore mā te whakahoro me te purenga.

He aha koe i whiriwhiri ai i te Maleic Anhydride? Koinei te pou tuarā o ngā kapia polyester kounga teitei, ā, ka wetewetehia hoki ngā matū rerekē o muri mai (BDO, THF, me ētahi atu). Tukua mai he karere inaianei hei tūhura i ngā otinga MA kua whakaritea mō tō pakihi!