Anhydride maleic (MA)

He matū waro nui te maleic anhydride (MA) e whakamahia whānuitia ana i roto i te umanga matū. Ko ōna whakamahinga matua ko te hanga i ngā kapia polyester kāore i te mākū (UPR), he mea nui ki te hanga kirihou kua whakakahangia ki te muka karāhe, ngā paninga, me ngā wāhanga motuka. Hei tāpiri, ko te MA te matū matua mō te 1,4-butanediol (BDO), e whakamahia ana i roto i ngā kirihou pirau, me ētahi atu mea pērā i te waikawa fumaric me ngā matū ahuwhenua36.

I ngā tau tata nei, kua pāngia te mākete MA e ngā piki me ngā heke nui. I te tau 2024, i heke ngā utu mā te 17.05%, mai i te 7,860 RMB/tana ka mutu ki te 6,520 RMB/tana nā te nui rawa o te tuku me te ngoikore o te tono mai i te rāngai hoko whenua, he kaihoko nui o UPR36. Heoi, i puta he pikinga utu mō te wā poto i te wā i mutu ai te whakaputanga, pērā i te kati ohorere a Wanhua Chemical i te Hakihea 2024, i piki ake ai ngā utu mō te wā poto mā te 1,000 RMB/tana3.

I te marama o Āperira 2025, kei te piki haere tonu ngā utu o MA, me ngā whakahuatanga mai i te 6,100 ki te 7,200 RMB/tana i Haina, i awehia e ngā āhuatanga pēnei i ngā utu rauemi mata (n-butane) me ngā nekehanga tono i raro iho27. E matapaetia ana ka noho tonu te mākete i raro i te pēhanga nā te whānui haere o te kaha whakaputa me te iti o te tono mai i ngā rāngai tuku iho, ahakoa ko te tipu o ngā rauemi motuka me ngā rauemi pirau-koiora ka tautoko pea.