Diphenol ba hydrocarbon mai kamshi ba ne saboda yana ɗauke da atom ɗin oxygen kuma wani abu ne na ƙamshi.
Masana'antu 2-naphthol ana tsabtace naphthol azaman ɗanyen abu, tare da 96-98% sulfuric acid sulfonation na 2-naphthol sulfonic acid, sa'an nan kuma tare da neutralization na sodium sulfite don samar da gishiri sodium sa, sa'an nan kuma tare da sodium hydroxide alkali fusion na 2-naphthol sodium. , sa'an nan tare da sulfuric acid acidification na 2-naphthol danye kayayyakin, bayan tafasa, wanka, bushewa, decompressed distillation na 2-naphthol kayayyakin.
Gurbacewar wannan tsari yana da matukar tsanani kuma matsalar kare muhalli ta fi fice.
Ci gaban cyanamine na Amurka na 2-isopropylnaphthalene ya haɗu da samar da tsarin acetone 2-naphthol, saboda tsadar kare muhalli da sauran dalilai kuma ya daina samarwa.
A halin yanzu, manyan kasashen da ke samar da 2-naphthol a duniya sune China, Indiya, Japan, Italiya da wasu kasashe a gabashin Turai.
Kasar Sin ta fara samar da nafitol 2 a shekarar 1957. Tun daga shekarun 1980, yayin da kasashen da suka ci gaba suka daina hakowa daya bayan daya, kasar Sin ta zama babbar mai samar da naphthol 2.
Tun daga 1990, kasuwar 2-naphthol ta sami babban ci gaba da faduwa. A cikin 'yan shekarun nan, an ci gaba da fitar da adadin ton dubu 8-100 na shekara-shekara, sannan kuma an samu ci gaba mai yawa, inda aka fitar da ton 8,227 a shekarar 2005, ton 15,924 a shekarar 2006, da tan 15,307 daga watan Janairu zuwa Oktoba na shekarar 2007.
Amfanin 2-naphthol a China shine kusan kashi 60% na tsaka-tsakin rini, 20% na abubuwan da ake amfani da su na roba, 10% na rini da pigments, da 10% na sauran.
Kamar yadda buƙatun rini da pigments ke ƙaruwa, haka kuma buƙatar 2-naphthol za ta kasance.
Haɓaka tsarin samarwa, ceton makamashi da rage yawan amfani, rage sharar gida guda uku ko haɓaka sabon tsarin tsaftacewa ya zama jagora mai mahimmanci don ci gaba da ci gaba mai kyau na masana'antar samar da 2-naphthol.
Na biyu, aikace-aikacen a cikin masana'antar rini da pigment
Rini da tsaka-tsakin launi sune mafi girman wuraren amfani da naphthol 2 a cikin Sin. Babban dalili shi ne cewa samar da tsaka-tsakin rini yana gudana a duniya. Misali, 2, 3 acids, J acid, γ acid, R acid da chromophenol AS, dukkansu muhimman abubuwan da ake fitarwa na tsaka-tsaki ne a cikin kasar Sin, wanda ya kai fiye da rabin adadin abin da ake fitarwa a cikin gida.
Bugu da ƙari, haɗawar dyestuff da tsaka-tsakin launi, 2-naphthol kuma za'a iya amfani dashi azaman ɓangaren azo, da mahadi na diazo don samar da dyestuff 1,2, 3 acid.
2, 3 acidification sunan kimiyya: 2-hydroxy-3-naphthic acid, hanyar haɗinsa shine [1]: 2-naphthol da sodium hydroxide reaction, decompressed dehydration, samun 2-naphthol sodium, sa'an nan kuma amsa tare da CO2 don samun 2- naphthol da 2, 3 sodium gishiri, cire 2-naphthol, acidification, samun 2, 3 acid.
A halin yanzu, manyan hanyoyin haɗakarwa sune tsayayyen tsari na zamani da hanyar ƙarfi, kuma hanyar warwarewa ita ce yanayin haɓaka gaba ɗaya.
Tafkin pigments tare da acid 2,3 a matsayin abubuwan haɗin haɗin gwiwa ana haɗa su ta hanyar fara samar da abubuwan diazo zuwa salts diazo, tare da acid 2,3, sannan amfani da alkali karfe da gishirin alkali na ƙasa ana iya jujjuya su zuwa rinayen tabki mara narkewa.
Babban chromatogram na 2,3 acid lake pigments shine ja haske.
Misali: CI Pigment Red 57:1, CI Pigment Red 48:1, da sauransu.
2, 3 acid ana amfani dashi ko'ina a cikin haɗin chromophenol jerin rinayen kankara. A cikin Index ɗin Dye na 1992, 28 chromophenols an haɗa su ta 2, 3 acid.
Launi phenol AS jerin abubuwan haɗin gwiwa na azo pigment, hanyoyin roba na irin wannan fenti ana yin su ne daga diazo component diazonium gishiri da farko, kuma launin phenol coupling AS jerin abubuwan da aka samo asali, kamar AS abubuwan diazo sun ƙunshi zobe na kamshi kawai, halogen, nitrocellulose, alkoxy kungiyoyin, kamar AS launi na yau da kullun sakamakon sakamakon phenol AS jerin rini na azo don abubuwan haɗin gwiwa,
Misali, zobe na diazo na kamshi kuma yana dauke da kungiyoyin sulfonic acid, da kuma chromophenol AS series derivatives, sannan gishirin alkali da alkali na duniya za a iya juyar da su zuwa rini na tabki mara narkewa.
MIT-Ivy INDUSTRY ta himmatu wajen samar da rini da magunguna na kusan shekaru 20, tare da tsafta da tsada mai tsada, wanda masu amfani da launi a gida da waje suka yaba sosai. Don gode wa ɗimbin masu amfani don ƙaunar su, ana iya ba da samfuran kamfaninmu ga masu amfani don gwaji kyauta, maraba da masu amfani daga kowane da'irar al'umma don su zo don tattauna haɗin gwiwa!
Athena
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