Abathathi-nxaxheba kwimarike kutshanje bathi amandla e-Ethylene eNtsha ye-Ethylene aya konyusa izixhobo zekhabhoni ezine, kwaye ukuveliswa kwe-US cwadiene kulindeleke ukuba kuguqulwe amaxabiso e-Outladiene ngo-2014, kudala ukuthunyelwa kwemarike ye-Dowream ngo-2019.
Ngo-2018, bekukho ukunqongophala kwe-butadiene eUnited States . {i-2 {2} {{2} {{3} {{3} . kunye ne Ukugunyazisa amaqhekeza amatsha ngo-Matshi nangoJulayi ka-2018, kwabakho ukuhanjiswa okungaphezulu kwe-Ethyylene, ekhokelela kwi-erackene ebukhali kwi-eshane i-ethane njenge-Ethane ye-Ethane ye-Ethane ye-Ethane ye-Ethane.
Uninzi lwango-2018, indawo enobuchule kumaxabiso e-oyile axhasa amaxabiso axhaswa ngamaxabiso anezinto ezinama-78, olona lonwabo lwe-ethane kwi-United States kunyaka ophelileyo {{5}. Ukwehla kwenzuzo yenzuzo ye-cracker nayo ibe negalelo ekwenzeni ukwehla kwenqanaba lokusebenza kwesityalo . ngo-2018, iiseti ezimbini zamandla eUnited States zanyanzelwa ukuba zisondele ngenxa yezizathu zezoqoqosho .
Uninzi lwesiqingatha sesibini sika-2018, ukuveliswa kwe-carbon Izixhobo ezine eziluhlaza bekulinganiselwe, kubangela ukuba kunikezelwe kwi-United States kwi-United States emva kokuqala kwesiqingatha sokuqala se-United States ye-{4}}
Ukujonga phambili ku-2019, ukwanda kokuthengiswa kwemakethi kuya kubangela ukuba amaxabiso awe . ukuphela kwe-United States, i-Shin African kunye ne-Shin-Etsu kulindeleke ukuba igqitywe kwaye ilindelwe ukuba i-US Umthamo wokuvelisa i-Ethylene uya kunyuka malunga ne-6 yezigidi zeetoni ngonyaka ngaphambi kokuphela kwe- 2019.
Njengamandla eyunithi yokuqhekeka enyukayo, ukuveliswa kwekharbon yezixhobo zobukratshi ziya kwanda, nangona uninzi lweeyunithi ezintsha zinokusebenzisa isivuno esisezantsi sezinto ezinobungozi ezifana ne-carbon yezixhobo zekharbon.
Ukukhutshwa kwengqekembe yamandla kuya kukhokelela ekunyukeni kwe-Butadiene e-United States kunyaka ophelileyo, njengoko i-{1}}} ihla ngexabiso elibukhali kwi-oyile e-oyile kunye nokunyuka Kwinzuzo yamaqhekeza aphucule i-Economics ye-Stocketstocks ye-Speedstocks, ekhokelele ekunyukeni kwesandla se-furbon abavelisi . kwelinye icala, imozulu yasebusika yayibanda kwaye imfuno yamaxesha onyaka kwicandelo lokwakha elisezantsi lecandelo eliphantsi.
Ngo-2019, ukudodobala kwexabiso leoli ebomvu kuya kuqinisekisa i-Economics ye-Speedstocks eqaqambileyo ye-ButadStoam Dowream kwaye ikhuthaze ukuthunyelwa kwemveliso ye-Butadre