Diphenol tsis yog ib qho uas muaj ntxhiab hydrocarbon vim tias nws muaj cov pa oxygen atoms thiab yog ib qho tshuaj tsw qab.
Muaj 2-naphthol yog refined naphthol li raw khoom, nrog 96-98% sulfuric acid sulfonation ntawm 2-naphthol sulfonic acid, thiab ces nrog sodium sulfite neutralization los tsim nws sodium ntsev, thiab ces nrog sodium hydroxide alkali fusion ntawm 2-naphthol sodium Tom qab ntawd nrog sulfuric acid acidification ntawm 2-naphthol crude khoom, tom qab boiling, ntxuav, ziab, decompressed distillation ntawm 2-naphthol khoom.
Cov pa phem ntawm cov txheej txheem no tseem ceeb heev thiab qhov teeb meem tiv thaiv ib puag ncig yog qhov tseem ceeb dua.
American cyanamine txoj kev loj hlob ntawm 2-isopropylnaphthalene ua ke ua ke ntawm acetone 2-naphthol txheej txheem, vim yog tus nqi ntawm kev tiv thaiv ib puag ncig thiab lwm yam laj thawj thiab nres ntau lawm.
Tam sim no, lub teb chaws tsim khoom tseem ceeb ntawm 2-naphthol hauv ntiaj teb yog Tuam Tshoj, Is Nrias teb, Nyiv, Ltalis thiab qee lub tebchaws nyob sab Europe sab hnub tuaj.
Tuam Tshoj pib tsim 2-naphthol nyob rau hauv 1957. Txij li thaum xyoo 1980s, raws li cov teb chaws tsim tau tso tseg ib qho tom qab, Tuam Tshoj tau dhau los ua tus xa khoom tseem ceeb ntawm 2-naphthol.
Txij li xyoo 1990, 2-naphthol kev ua lag luam tau ntsib kev nce thiab nqis. Nyob rau hauv xyoo tas los no, txhua xyoo tso zis ntawm 8-100 txhiab tons tau khaws cia, thiab kev xa tawm kuj tseem muaj kev loj hlob, nrog rau kev xa tawm ntawm 8,227 tons hauv xyoo 2005, 15,924 tons hauv 2006, thiab 15,307 tons ntawm Lub Ib Hlis Ntuj txog Lub Kaum Hli 2007.
Kev noj 2- naphthol hauv Suav teb yog kwv yees li 60% ntawm cov xim nruab nrab, 20% roj hmab additives, 10% dyes thiab pigments, thiab 10% ntawm lwm tus.
Raws li qhov kev thov rau dyes thiab pigments nce, yog li qhov kev thov rau 2-naphthol.
Kev txhim kho cov txheej txheem tsim khoom, txuag hluav taws xob thiab txo kev noj, txo peb qhov pov tseg lossis tsim cov txheej txheem ntxuav tshiab tau dhau los ua ib qho tseem ceeb rau kev txhim kho txuas ntxiv thiab noj qab haus huv ntawm 2-naphthol kev lag luam.
Qhov thib ob, daim ntawv thov hauv kev lag luam dye thiab pigment
Dye thiab pigment intermediates yog cov khoom siv loj tshaj plaws ntawm 2-naphthol hauv Suav teb. Qhov laj thawj tseem ceeb yog tias kev tsim cov dye intermediates tau raug hloov mus thoob ntiaj teb. Piv txwv li, 2, 3 acids, J acid, γ acid, R acid thiab chromophenol AS yog tag nrho cov tseem ceeb nruab nrab xa tawm nyob rau hauv Tuam Tshoj, accounting rau ntau tshaj ib nrab ntawm tag nrho cov domestic tso zis.
Ntxiv nrog rau kev sib xyaw ntawm dyestuff thiab pigment intermediates, 2-naphthol kuj tseem siv tau los ua ib feem ntawm azo, thiab diazo tebchaw los tsim cov dyestuff 1,2, 3 acids.
2, 3 acidification lub npe scientific: 2-hydroxy-3-naphthic acid, nws cov txheej txheem synthesis yog [1]: 2-naphthol thiab sodium hydroxide cov tshuaj tiv thaiv, decompressed lub cev qhuav dej, tau 2-naphthol sodium, thiab tom qab ntawd cov tshuaj tiv thaiv nrog CO2 kom tau 2- naphthol thiab 2,3 sodium ntsev, tshem tawm 2-naphthol, acidification, tau 2,3 ​​acid.
Tam sim no, cov txheej txheem tseem ceeb ntawm cov txheej txheem yog cov txheej txheem txheej txheem thiab cov txheej txheem hnyav, thiab cov txheej txheem hnyav yog cov qauv kev loj hlob.
Lake pigments nrog 2,3 acids li coupling Cheebtsam yog synthesized los ntawm thawj ua diazo Cheebtsam rau hauv diazo ntsev, ua ke nrog 2,3 acids, thiab ces siv alkali hlau thiab alkali ntiaj teb hlau ntsev yuav hloov mus rau insoluble pas dej dyes.
Lub ntsiab chromatogram ntawm 2,3 acid pas dej pigments yog lub teeb liab.
Piv txwv li: CI Pigment Liab 57: 1, CI Pigment Liab 48: 1, thiab lwm yam.
2, 3 acids yog dav siv nyob rau hauv lub synthesis ntawm chromophenol series ntawm dej khov-dyed dyes. Hauv Dye Index xyoo 1992, 28 chromophenols tau tsim los ntawm 2, 3 acids.
Xim phenol AS series ntawm coupling Cheebtsam ntawm azo pigment, hluavtaws txoj kev ntawm hom xim no yog tsim los ntawm diazo tivthaiv diazonium ntsev ua ntej, thiab cov xim ntawm phenol coupling AS ib tug series ntawm derivatives, xws li cov diazo Cheebtsam tsuas muaj alkyl aromatic nplhaib, halogen, nitrocellulose, alkoxy pawg, xws li cov xim zoo tib yam uas tshwm sim los ntawm cov tshuaj tiv thaiv ntawm phenol AS series ntawm azo dye rau cov khoom sib txuas,
Piv txwv li, lub nplhaib aromatic ntawm diazo Cheebtsam kuj muaj sulfonic acid pawg, thiab chromophenol AS series derivatives, thiab ces cov ntsev ntawm alkali thiab alkali ntiaj teb hlau yuav hloov mus rau insoluble pas dej dyes.
MIT-Ivy INDUSTRY tau cog lus rau dyes thiab tshuaj intermediates rau ze li ntawm 20 xyoo, nrog siab purity thiab ncaj ncees tus nqi, uas tau txais kev qhuas heev los ntawm cov neeg siv pigment hauv tsev thiab txawv teb chaws. Txhawm rau ua tsaug rau cov neeg siv ntau rau lawv txoj kev hlub, peb lub tuam txhab cov qauv tuaj yeem muab rau cov neeg siv kev sim dawb, txais tos cov neeg siv los ntawm txhua lub voj voog hauv zej zog tuaj tham txog kev koom tes!
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