I-methyl metacrylate (MMA) yindawo ebalulekileyo ye-orgacles yekhemikhali kunye ne-polymer monomer, ikakhulu isetyenziswa kwimveliso ye-orlitic yeglasi, i-acrylics, impahla esebenzayo kunye ne-EermaceOutical ye-Aerospace, nge-elektroniki Ulwazi, ifayibha yokukhanya, iirobhothi kunye nezinye iinkalo.

Njengomntu obonakalayo, i-MMA isetyenziswa ikakhulu kwimveliso ye-polymethyl metacrylate (eyaziwa ngokuba yiPlexiglass, i-PMMA), kwaye inokuthi isetyenziswe ezinye iimveliso ze-vinyl, ezifana nokwenza i-Polyviny ye-phecloriny ) I-Ackatitives ye-ACR, i-MBS kunye ne-monomer yesibini kwimveliso ye-acrylic.

Okwangoku, zintathu iindidi zeenkqubo zokukhula kwemveliso yaseMMA ekhaya nakumazwe aphesheys Indlela ye-Basf kunye ne-Lucite Alpha indlela).

I-1, iMethacylamime Hydrolyside
Le ndlela yindlela yemveliso ye-MMA, kubandakanya nendlela ye-acetone ye-acetone ye-acetone kunye nendlela ye-methacynlonnikarile, zombini emva kwe-methacyrylamin ephakathi, i-esntish synthesis ye-MMA.

(1) I-Acetone ye-Acetone ye-cyanohydrin (indlela yeAch)

Indlela ye-ACH, ephuhliswe i-US Lucite, yindlela yokufika kwemveliso yase-MMA, kwaye ikwayinkqubo yemveliso ye-MMA ehlabathini. Le ndlela isebenzisa i-acetone, i-hydrocynic acid, i-sulfuric acid kunye ne-methanol njengezixhobo eziluhlaza, kwaye amanyathelo okuphendula abandakanya ukusabela, umthetho wokusabela kunye nokusabela kwi-hydrolysis yokuphendula.

Inkqubo ye-ACH ivuthiwe ngokweetekhnoloji, kodwa inezi zinto zibalaseleyo zilandelayo:

○ Ukusetyenziswa kwe-hydrocynic ye-hydrocynic acid, efuna amanyathelo angqongqo aphezulu ngexesha lokugcina, ukuthutha nokusebenzisa;

○ ngokuvelisa isixa esikhulu sexabiso le-Acid Acid (isisombululo se-acicric kunye ne-sulfuric acid njengezinto eziphambili zezinto eziphilayo), inani le-MMA, kwaye ibaluleke kakhulu umthombo wongcoliseko lwendalo;

o Ngenxa yokusetyenziswa kwe-Sulfuric Acid, izixhobo ze-Anti-Sorsion ziyafuneka, kwaye ukwakhiwa kwesixhobo kuyabiza.

(2) Indlela ye-methacynikarrtile (indlela yendoda)

I-Asahi Kasei iphuhlise inkqubo ye-methacylonitraitrlonlonitritrraitrrile (okt, i-isobylene okanye i-tetranol ye-AMONIA ye-AMONIDE i-AMONIDE AID kunye ne-methanol ukuba ivelise Mma. Indlela yendoda ibandakanya ukuphendula i-Amonia Ukuphendula, indlela yokusabela kunye nokuphendula kwe-hydrolysis yokuphendula, kwaye unokusebenzisa uninzi lwezixhobo zesityalo se-ACH. Impendulo ye-hydrolysis isebenzisa i-sulfuric acid, kwaye isivuno seMethacyrylamside siphantse siyi-100%. Nangona kunjalo, le ndlela ine-hydrocylic acid ye-acid ye-Acid, i-Hydrocynic Acid kunye ne-Sulfuric Acid iphakame kakhulu, iimfuno zokusebenza eziphindaphindiweyo ziphezulu kakhulu, ngelixa iingozi zokusingqongileyo ziphezulu kakhulu.

I-2, isobutelnene yendlela
I-Isobylene oxidation ibe lolona hlobo lwetekhnoloji olukhethiweyo kwiinkampani ezinkulu kwihlabathi ngenxa yokusebenza okuphezulu kunye nokukhusela isisingqongileyo, kwaye kuphela i-jaji ye-rateble ehlabathini kwaye ivale itekhnoloji eChina. Le ndlela ibandakanya iintlobo ezimbini zenkqubo yeMitbubishi kunye ne-Asahi Kaei.

(1) Inkqubo yeMitsubishi (isobylene yendlela yamanyathelo)

I-Mictubishi yaseJapan iphuhlise inkqubo entsha yokuvelisa i-mma kwi-isobutylene okanye i-ter-bher-utatiment njengesixhobo se-oxchacrylic acid (MaA), emva koko waphinda wafumana i-methanol. Emva kokuhlaziywa kwe-Mitsubishi rayon, Japan Aahi Kasele Inkampani Inkampani yeqela lasekhaya uShanghai Hunghai ityale imali eninzi yezixhobo kunye nezemali, kwaye emva kweminyaka eli-15 yemizamo yezizukulwana ezizibini, yazifumana ngempumelelo kwi-Osobylene Imveliso yeTekhnoloji ye-Osobylene, yaye ngoDisemba wama-ISobylene Cechnology, nangoDisemba wama-Osobylene , igqityiwe yaze yasebenza isityalo se-50,000 ye-MMA kwinkampani yalo yokudibana ne-Dongling huhuang ekwi-heze, iphondo le-shandong, elaphulayo i-tekhnoloji ye-japan kwaye iyodwa inkampani ye-challa. Itekhnoloji, nenza i-China ilizwe lesibini ukuba netekhnoloji ehamba phambili kwezorhwebo ngemveliso kaMaa kunye ne-mma nge-oxidation ye-isobutylene.

(2) Inkqubo ye-Asahi Kalele (isobylene matena-nyathelo)

I-Jaahi ye-Asah yeKase ye-Kase imele inikezele kuphuhliso lwendlela ekhethekileyo yemveliso yokuveliswa kwe-MMA, equlethwe ngempumelelo kwaye yangena ngempumelelo kwaye yangena ngempumelelo kwaye yabhalwa ngempumelelo kwaye yanikezelwa kwiitoni ezingama-100,000. Indlela yezobugcisa iqulathe i-isotutlene okanye i-oxidation ye-oxidane okanye i-tert-bhestanol kwinqanaba le-mo-bi edibeneyo le-mo-bide ivelise i-methacroleest (Mal), ilandelwe kukuncancisa i-AX kwi Isigaba samanzi phantsi kwesenzo se-PD-PB ivelise i-mma ngqo, apho ukunyeliseka kwe-oxidage) lelona nyathelo liphambili kule ndlela ukuvelisa i-MMA. Indlela ye-Aahi ye-Kaehi ye-Kaehi ilula, ngamanyathelo amabini kuphela okuphendula kunye namanzi kuphela njengemveliso, oluhlaza, kodwa uyilo kunye nokulungiselela i-catalyst kufuna kakhulu. Kuxelwe ukuba i-Aahi Kasei ye-Oxidas's Oxidally iphuculwe kwisizukulwane sokuqala se-PD-PB kwisizukulwane esitsha se-AU-NIN KAKHULU.

Emva kokuphuculwa kwezemizi-mveliso ye-Asahi Kaei Technology, ukusukela ngo-2003, amaziko ophando lwasekhaya aqalisa i-boom eqhelekileyo kule ndawo, kwiziko leSayensi yeSayensi, iYunivesithi yaseThainejin igxile Ngophuhliso kunye nokuphuculwa kwe-PB-PB ye-PD-PB, ngo-2015, uphando lwasekhaya kwi-AU-NICARSSSS iqalise omnye umjikelo we-boom, omele i-Dialian Institute yeSayensi yeNjineli, i-Chinese Academy yeSayensi ye Isifundo esincinci sokuqhuba, sigqibezele inkqubo yokulungiselela i-Nano-yegolide ye-NAno-Golide, ukuvavanywa kweNdlela yokuvavanywa kunye nokuPhuculwa kovavanyo lwexesha elide lokusebenza, kwaye ngoku ngokusebenzisana namashishini ukuphuhlisa itekhnoloji yokuhlela.

I-3, Carbone Carbonyl synthesis
Itekhnoloji yendlela ye-Ethylene Carbonyl Indlela ye-Synthesis ibandakanya inkqubo ye-basf kunye ne-zethylene-propionic acid methyl yenkqubo yenkqubo.

(1) Indlela ye-Ethylene-Propionic Acid (Inkqubo ye-BASF)

Inkqubo inamanyathelo amane: I-Ethylene ihliselwe i-propionaldealde, i-propiionaldehyde incitshiswe nge-forfaldehydeyd ukuvelisa i-mana, kwaye i-mama yahlulwe kwaye ihlanjululwe ukuvelisa i-MMA ngoku-stastarisordisotion nge I-methanol. Indlela yokuphendula yelona nqanaba liphambili. Inkqubo ifuna amanyathelo amane, ethi i-thedbersome kwaye ifuna izixhobo eziphezulu kunye neendleko eziphezulu zotyalo-mali, ngelixa inzuzo yixabiso eliphantsi lezinto eziluhlaza.

Imibutho yasekhaya ikwenziwe kwitekhnoloji yophuhliso lwetekhnoloji ye-Ethylene-proplene-proplehyde ye-MMA. Ngo-2017, inkampani yeqela le-shanghai huaia, ngokusebenzisana nenkampani yezixhobo ze-zungung kunye neyunithi ye-proplin, igqitywe i-propt ye-proplenene-ye-forphohyde ye-proplenene-ye-proplehyden ukuya kwi-THITHORY ye-90,000 yemizi-mveliso. Ukongeza, iziko lenkqubo yobunjineli be-Chinese Academy, ngokusebenzisana neqela lehendan lamandla kunye ne-Chemical, lagqiba khona umzi we-pilot ye-picare ye-1 000 kwaye iphumelele ngempumelelo ngo-2018.

(2) Inkqubo ye-Ethylene-Methyl yenkqubo yenkqubo (inkqubo ye-lucite alpha)

Inkqubo ye-Lucite ye-Lucite Alpha inkqubo yokusebenza inobulali, isivuno semveliso siphezulu, ukutyala ukutya kwemali kunye neendleko zezinto ezingafunekiyo zilula, kwaye okwangoku i-lucite kuphela kulawulo olukhethekileyo lwale teknoloji emhlabeni kwaye ayikho idluliselwe kwihlabathi langaphandle.

Inkqubo ye-alpha yahlulwe yangamanyathelo amabini:

Inyathelo lokuqala kukusabela kwe-ithylene nge-CO kunye ne-methanol ukuvelisa i-methyl propionate

Ukusebenzisa i-catageot ye-catageous esekwe kwi-pilladium, eneempawu zomsebenzi ophezulu, ukukhetha okuphezulu (99.9%) kunye nenkonzo ende eyenziwayo phantsi kwemeko ethambileyo, kwaye iphantsi kwemeko yotyalo-mali ;

Inyathelo lesibini yindlela yokuphendula ye-methyl eqhubeka ne-formaldehyde ye-MMA

Isigaba senqanaba le-Perrietary isetyenzisiwe, elinayo ukukhetha okuphezulu kwe-MMA. Kwiminyaka yakutshanje, amashishini asekhaya atyale inzondelelo enkulu kubuchwephesha be-methyl anyuke kunye ne-formaldehydehyde profuncences to proncences, kwaye wenza inkqubela phambili yenkqubo yokuphendula, kodwa ubomi obukhulu becala abufikeleli kwezomsebenzi izicelo.