I-Diphenol ayisiyo i-aromatic hydrocarbon kuba inee-atoms ze-oksijini kwaye iyinto ephuma kwi-aromatic derivative.
I-Industrial 2-naphthol yi-naphthol ecociweyo njengezinto eziluhlaza, kunye ne-96-98% ye-sulfuric acid sulfonation ye-2-naphthol sulfonic acid, kwaye emva koko kunye ne-sodium sulfite neutralization ukuvelisa ityuwa yayo yesodium, kwaye emva koko kunye ne-sodium hydroxide alkali fusion ye-2-naphthol sodium, emva koko kunye ne-sulfuric acid acidification yeemveliso ze-2-naphthol crude, emva kokubilisa, ukuhlamba, ukomisa, kunye ne-decompressed distillation yeemveliso ze-2-naphthol.
Ungcoliseko lwale nkqubo lubi kakhulu kwaye ingxaki yokukhuselwa kwendalo iyabonakala ngakumbi.
Uphuhliso lwe-cyanamine yaseMelika ye-2-isopropylnaphthalene edibeneyo yemveliso yenkqubo ye-acetone 2-naphthol, ngenxa yeendleko zokhuseleko lokusingqongileyo kunye nezinye izizathu kwaye kwamisa imveliso.
Okwangoku, amazwe aphambili avelisa i-2-naphthol ehlabathini yiTshayina, iIndiya, iJapan, i-Itali kunye namanye amazwe aseMpuma Yurophu.
ITshayina yaqala ukuvelisa i-2-naphthol ngo-1957. Ukususela ngeminyaka yoo-1980, njengoko amazwe aphuhlileyo ayeka ukuvelisa elinye emva kwelinye, iTshayina iye yaba ngumthengisi ophambili we-2-naphthol.
Ukususela ngo-1990, imakethi ye-2-naphthol iye yafumana ukunyuka nokuhla okukhulu. Kwiminyaka yakutshanje, imveliso yonyaka ye-8-100 lamawaka eetoni iye yagcinwa, kwaye ukuthunyelwa kwamanye amazwe nako kuye kwagcina ukukhula okukhulu, kunye nokuthunyelwa kwamanye amazwe kwe-8,227 yeetoni ngo-2005, iitoni ezili-15,924 ngo-2006, kunye neetoni ezili-15,307 ukususela ngoJanuwari ukuya ku-Okthobha ka-2007.
Ukusetyenziswa kwe-2-naphthol eTshayina kumalunga ne-60% yezinto ezidibanisa idayi, i-20% yezongezo zerabha, i-10% yeedayi kunye nemibala, kunye ne-10% yezinye izinto.
Njengoko imfuno yeedayi kunye neepigment isanda, imfuno ye-2-naphthol iya kukhula.
Ukuphucula inkqubo yemveliso, ukonga amandla kunye nokunciphisa ukusetyenziswa, ukunciphisa inkunkuma emithathu okanye ukuphuhlisa inkqubo entsha yokucoca kube yindlela ebalulekileyo yophuhliso oluqhubekayo nolusempilweni lweshishini lemveliso ye-2-naphthol.
Okwesibini, ukusetyenziswa kwishishini ledayi kunye nombala
Iidayi kunye neepigment intermediates zezona ndawo zisetyenziswa kakhulu yi-2-naphthol eTshayina. Isizathu esiphambili kukuba imveliso yeedayi intermediates ibisoloko idluliselwa kwihlabathi liphela. Umzekelo, ii-asidi ezi-2, ezi-3, i-asidi ye-J, i-asidi ye-γ, i-asidi ye-R kunye ne-chromophenol AS zonke zizinto ezibalulekileyo ezithunyelwa kwamanye amazwe eTshayina, zibala ngaphezulu kwesiqingatha semveliso iyonke yasekhaya.
Ukongeza ekuhlanganisweni kwe-dyestuff kunye ne-pigment intermediates, i-2-naphthol ingasetyenziswa njengenxalenye ye-azo, kunye nee-diazo compounds ukuvelisa i-dyestuff 1,2, 3 acids.
2, 3 i-acidification igama lesayensi: i-2-hydroxy-3-naphthic acid, indlela yayo yokwenziwa yi [1] : i-2-naphthol kunye ne-sodium hydroxide reaction, i-decompressed dehydration, i-2-naphthol sodium, ize emva koko i-reaction ne-CO2 ifumane i-2-naphthol kunye ne-2, 3 sodium salt, isuse i-2-naphthol, i-acidification, ifumane i-2, 3 acid.
Okwangoku, iindlela eziphambili zokwenziwa kwendlela yesigaba esiqinileyo kunye nendlela yesisombululo, kwaye indlela yesisombululo yindlela eqhelekileyo yophuhliso.
Iipigment zeLake ezinee-asidi eziyi-2,3 njengee-coupling components zenziwa ngokwenza kuqala ii-diazo components zibe zii-diazo salts, zidibene nee-asidi eziyi-2,3, kwaye emva koko kusetyenziswa i-alkali metal kunye ne-alkali earth metal salts zinokuguqulwa zibe ziidayi zelake ezinganyibilikiyo.
I-chromatogram ephambili yee-pigments ze-acid lake eziyi-2,3 kukukhanya okubomvu.
Umzekelo: CI Pigment Red 57:1, CI Pigment Red 48:1, njl.
Iiasidi ezi-2, 3 zisetyenziswa kakhulu ekuhlanganiseni uthotho lweedayi ezidaywe ngumkhenkce. Kwi-Dye Index ka-1992, ii-chromophenols ezingama-28 zenziwa ziiasidi ezi-2, 3.
Umbala we-phenol AS uthotho lwezinto ezidibeneyo ze-azo pigment, iindlela zokwenziwa zolu hlobo lwepeyinti zenziwe ngetyuwa ye-diazo component diazonium kuqala, kwaye umbala we-phenol coupling AS uthotho lwezinto eziphuma kuzo, ezifana ne-AS izinto ze-diazo ziqulathe kuphela i-alkyl aromatic ring, i-halogen, i-nitrocellulose, amaqela e-alkoxy, ezifana ne-AS umbala oqhelekileyo ovela kwimpendulo ye-phenol AS uthotho lwedayi ye-azo yezinto ezidibeneyo,
Umzekelo, i-aromatic ring yee-diazo components ikwanamaqela e-sulfonic acid, kunye ne-chromophenol AS series derivatives, kwaye emva koko ityuwa yeentsimbi zomhlaba ze-alkali kunye ne-alkali ingaguqulwa ibe yidayi yelake enganyibilikiyo.
I-MIT-Ivy INDUSTRY ibisoloko izibophelele kwiidayi kunye ne-pharmaceutical intermediates phantse iminyaka engama-20, ngobunyulu obuphezulu kunye nexabiso elifanelekileyo, nto leyo eye yanconywa kakhulu ngabasebenzisi be-pigment ekhaya nakwamanye amazwe. Ukuze sibulele inani elikhulu labasebenzisi ngothando lwabo, iisampulu zenkampani yethu zinokubonelelwa abasebenzisi ukuze bavavanywe simahla, wamkelekile abasebenzisi abavela kuzo zonke izangqa zoluntu ukuba beze kuxoxa ngentsebenziswano!
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