Diphenol si hydrocarbon yonunkhira chifukwa ili ndi maatomu a okosijeni ndipo ndi yochokera ku fungo.
Industrial 2-naphthol ndi naphthol yoyengedwa ngati zinthu zopangira, yokhala ndi 96-98% sulfuric acid sulfonation ya 2-naphthol sulfonic acid, kenako ndi sodium sulfite neutralization kuti ipange sodium salt yake, kenako ndi sodium hydroxide alkali fusion ya 2-naphthol sodium, kenako ndi sulfuric acid acidification ya 2-naphthol crude products, pambuyo powiritsa, kutsuka, kuumitsa, ndi decompressed distillation ya 2-naphthol products.
Kuipitsa kwa njirayi n’koopsa kwambiri ndipo vuto loteteza chilengedwe ndilofala kwambiri.
Kupanga kwa cyanamine yaku America kwa 2-isopropylnaphthalene kuphatikiza kupanga kwa acetone 2-naphthol, chifukwa cha mtengo woteteza chilengedwe ndi zifukwa zina ndikuyimitsa kupanga.
Pakadali pano, mayiko omwe amapanga kwambiri 2-naphthol padziko lonse lapansi ndi China, India, Japan, Italy ndi mayiko ena aku Eastern Europe.
China inayamba kupanga 2-naphthol mu 1957. Kuyambira m'ma 1980, pamene mayiko otukuka anasiya kupanga imodzi pambuyo pa ina, China yakhala wogulitsa wamkulu wa 2-naphthol.
Kuyambira mu 1990, msika wa 2-naphthol wakhala ukukwera ndi kutsika kwakukulu. M'zaka zaposachedwapa, kutulutsa kwa pachaka kwa matani 8-100,000 kwakhala kukuchitikabe, ndipo kutumiza kunja kwakhala kukukulirakulira kwambiri, ndi kutumiza kunja kwa matani 8,227 mu 2005, matani 15,924 mu 2006, ndi matani 15,307 kuyambira Januwale mpaka Okutobala 2007.
Ku China, kugwiritsa ntchito 2-naphthol ndi pafupifupi 60% ya zinthu zopaka utoto, 20% ya zowonjezera za rabara, 10% ya utoto ndi utoto, ndi 10% ya zina.
Pamene kufunika kwa utoto ndi utoto kukuwonjezeka, kufunikira kwa 2-naphthol kudzawonjezekanso.
Kukonza njira zopangira, kusunga mphamvu ndi kuchepetsa kugwiritsa ntchito, kuchepetsa zinyalala zitatu kapena kupanga njira yatsopano yoyeretsera kwakhala njira yofunika kwambiri pakukula kosalekeza komanso kwathanzi kwa makampani opanga ma naphthol awiri.
Chachiwiri, kugwiritsa ntchito mumakampani opanga utoto ndi utoto
Zinthu zopaka utoto ndi utoto ndi malo omwe amagwiritsidwa ntchito kwambiri ndi 2-naphthol ku China. Chifukwa chachikulu ndichakuti kupanga zinthu zopaka utoto kwakhala kukuchulukirachulukira padziko lonse lapansi. Mwachitsanzo, 2, 3 acids, J acid, γ acid, R acid ndi chromophenol AS zonse ndi zinthu zofunika kwambiri zotumizidwa kunja ku China, zomwe zimapangitsa kuti pakhale zoposa theka la zinthu zonse zomwe zimapangidwa m'dziko muno.
Kuwonjezera pa kupanga utoto ndi zinthu zosakaniza utoto, 2-naphthol ingagwiritsidwenso ntchito ngati gawo la azo, ndi ma diazo compounds kuti apange utoto 1,2, 3 acids.
2, 3 acidification dzina la sayansi: 2-hydroxy-3-naphthic acid, njira yake yopangira ndi [1]: 2-naphthol ndi sodium hydroxide reaction, decompressed dehydration, kupeza 2-naphthol sodium, kenako kuchitapo kanthu ndi CO2 kuti mupeze 2-naphthol ndi 2, 3 sodium salt, kuchotsa 2-naphthol, acidification, kupeza 2, 3 acid.
Pakadali pano, njira zazikulu zopangira ndi njira yokhazikika ya gawo ndi njira yosungunulira, ndipo njira yosungunulira ndiyo njira yodziwika bwino yopitira patsogolo.
Utoto wa m'nyanja wokhala ndi ma asidi 2,3 monga zigawo zolumikizira umapangidwa poyamba popanga zigawo za diazo kukhala mchere wa diazo, kuphatikiza ndi ma asidi 2,3, kenako pogwiritsa ntchito mchere wa alkali metal ndi alkali earth metal amatha kusinthidwa kukhala utoto wa m'nyanja wosasungunuka.
Chromatogram yayikulu ya utoto wa 2,3 acid lake ndi kuwala kofiira.
Mwachitsanzo: CI Pigment Red 57:1, CI Pigment Red 48:1, ndi zina zotero.
Ma asidi 2, 3 amagwiritsidwa ntchito kwambiri popanga mitundu yosiyanasiyana ya utoto wopaka utoto wa ayezi. Mu Dye Index ya 1992, ma chromophenols 28 adapangidwa ndi ma asidi 2, 3.
Mtundu wa phenol AS mndandanda wa zigawo zolumikizira za azo pigment, njira zopangira utoto wamtunduwu zimapangidwa kuchokera ku diazo component diazonium salt poyamba, ndipo mtundu wa phenol coupling AS mndandanda wa zotumphukira, monga AS zigawo za diazo zili ndi alkyl aromatic ring, halogen, nitrocellulose, magulu a alkoxy, monga AS mtundu wamba womwe umachokera ku zomwe phenol AS imachita, mndandanda wa azo dye wa zigawo zolumikizidwa,
Mwachitsanzo, mphete ya aromatic ya diazo components ilinso ndi magulu a sulfonic acid, ndi ma chromophenol AS series derivatives, kenako mchere wa alkali ndi alkali earth metals ukhoza kusinthidwa kukhala utomoni wa nyanja wosasungunuka.
MIT-Ivy INDUSTRY yakhala ikugwira ntchito yopaka utoto ndi mankhwala kwa zaka pafupifupi 20, ndi chiyero chapamwamba komanso mtengo wabwino, zomwe zayamikiridwa kwambiri ndi ogwiritsa ntchito utoto kunyumba ndi kunja. Pofuna kuyamikira ogwiritsa ntchito ambiri chifukwa cha chikondi chawo, zitsanzo za kampani yathu zitha kuperekedwa kwa ogwiritsa ntchito kuti ayesere kwaulere, landirani ogwiritsa ntchito ochokera m'magulu onse a anthu kuti abwere kudzakambirana za mgwirizano!
Athena
Kampani ya Mit-ivy
Whatsapp/wechat:+86 13805212761
ceo@mit-ivy.com