Maleic anhydride (MA)

ʻO Maleic anhydride (MA) kahi mea hoʻohui olaola nui i hoʻohana nui ʻia i ka ʻoihana kemika. ʻO kāna mau noi mua ka hana ʻana i nā resins polyester unsaturated (UPR), he mea nui ia i ka hana ʻana i nā plastic fiberglass-reinforced, nā uhi, a me nā ʻāpana kaʻa. Hoʻohui ʻia, lawelawe ʻo MA ma ke ʻano he precursor no 1,4-butanediol (BDO), i hoʻohana ʻia i nā plastic biodegradable, a me nā mea ʻē aʻe e like me ka fumaric acid a me nā kemika mahiʻai36.

I nā makahiki i hala iho nei, ua ʻike ka mākeke MA i nā loli nui. I ka makahiki 2024, ua emi nā kumukūʻai e 17.05%, e hoʻomaka ana ma 7,860 RMB/ton a hoʻopau i 6,520 RMB/ton ma muli o ka oversupply a me nā koi nāwaliwali mai ka ʻoihana waiwai, kahi mea kūʻai nui o UPR36. Eia nō naʻe, ua loaʻa ka piʻi ʻana o ke kumukūʻai i ka wā o ka hana ʻana, e like me ka pani ʻole ʻana o Wanhua Chemical i Dekemaba 2024, ka mea i hoʻokiʻekiʻe pōkole i nā kumukūʻai e 1,000 RMB/ton3.

Ma ʻApelila 2025, mau ke kumukūʻai MA, me nā huaʻōlelo mai ka 6,100 a i ka 7,200 RMB/ton ma Kina, i hoʻohuli ʻia e nā kumu e like me nā kumu waiwai (n-butane) a me nā neʻe koi i lalo27. Manaʻo ka mākeke e noho ma lalo o ke kaomi ma muli o ka hoʻonui ʻana i ka mana hana a me ka hoʻohaʻahaʻa ʻana i ka noi mai nā ʻāpana kuʻuna, ʻoiai ʻo ka ulu ʻana o nā mea automotive a me nā mea biodegradable hiki ke hāʻawi i ke kākoʻo.