Naphthol AS

Naphthol AS yog ib qho classical thiab dav siv azoic coupling tivthaiv hauv naphthol (ice) dyeing thiab luam ntawv tshuab rau cellulosic textiles. Nws tau ntev tau txais txiaj ntsig los ntawm kev lag luam textile rau nws tus cwj pwm ruaj khov, kev ua tau zoo ntawm kev sib txuas, thiab muaj peev xwm ua kom muaj kev ci ntsa iab, nrawm nrawm ncaj qha hauv fiber ntau. Cov khoom no feem ntau muab los ua daj daj rau lub teeb xim av crystalline hmoov nrog zoo cia ruaj khov thiab zoo ib yam, ua rau nws haum rau loj -scale kev lag luam siv.

Los ntawm kev xav tshuaj, Naphthol AS yog muab los ntawm 2-hydroxy-3-naphthoic acid thiab belongs rau amide-type naphthol coupling Cheebtsam. Nws nthuav tawm tsis tshua muaj solubility hauv dej, uas yog ib qho tseem ceeb rau nws txoj haujlwm hauv azoic dyeing. Thaum nws yaj hauv qee cov kuab tshuaj organic, nws cov cuab yeej tseem ceeb tshaj plaws yog nws lub peev xwm los tsim cov ntsev sodium soluble hauv alkaline aqueous media. Nyob rau hauv alkaline tej yam kev mob, naphthol molecule yog hloov dua siab tshiab rau hauv ib tug dej-soluble daim ntawv uas yuav tsum uniformly thov rau fibers los ntawm padding, qaug zog, los yog luam ntawv txheej txheem. Qhov no ua kom ntseeg tau tias txawm tias kev faib tawm ntawm cov khoom sib txuas hauv cov fiber ntau ua ntej kev tsim xim.

Hauv kev siv textile, Naphthol AS feem ntau yog siv rau paj rwb, viscose, thiab lwm yam cellulose-raws li fibers. Cov txheej txheem yuav tsum xub impregnating cov ntaub nrog alkaline naphthol tov, ua raws li los ntawm qhuav los yog nruab nrab fixation. Cov ntaub kho mob yog tsim los siv cov ntsev diazonium haum. Thaum lub sij hawm cov kauj ruam no, ib qho azo coupling cov tshuaj tiv thaiv tshwm sim ncaj qha rau hauv cov qauv fiber ntau, ua ib qho insoluble azo pigment nyob rau hauv situ. Qhov kev tsim cov xim sab hauv no yog qhov txiaj ntsig tseem ceeb ntawm naphthol dyeing, vim nws ua rau pom tseeb, huv si ntxoov nrog zoo tiv thaiv kev ntxuav thiab txhuam. Naphthol AS yog qhov tshwj xeeb tshaj yog paub txog kev tsim cov xim daj rau cov txiv kab ntxwv tones thaum ua ke nrog cov khoom tsim nyog diazo, txawm tias nws tuaj yeem ua rau xim liab thiab xim av hauv kev sib xyaw ua ke.

Ua tsaug rau nws qhov sib npaug reactivity thiab tswj kev sib txuas ceev, Naphthol AS ua tau zoo nyob rau hauv ob qho tib si nruam thiab batch txheej txheem. Nws yog sib xws nrog padding, txias ncoo-batch, thiab tshuab luam ntawv, muab cov txheej txheem zoo stability thiab rov tsim dua tshiab. Cov yam ntxwv no ua rau nws tsim nyog rau cov khaub ncaws ua haujlwm, cov ris tsho dav dav, cov ntaub ntawv paj rwb, thiab lwm yam kev siv uas yuav tsum tau muaj xim zoo sib xws thiab siv tau sai.

Peb Naphthol AS yog tsim nyob rau hauv kev tswj xyuas nruj kom paub meej cov yam ntxwv zoo ib yam, siab purity, thiab kev ua tau zoo. Txhua batch raug sim rau coupling efficiency thiab daim ntawv thov stability, muab cov neeg muas zaub nrog ib tug txhim khu kev qha thiab reproducible tivthaiv rau npaum azoic dyeing thiab luam ntawv ua hauj lwm.

Cov khoom no yog siv los ua ib qho nruab nrab rau cov organic pigments thiab tuaj yeem siv los tsim Pigment Liab 2, 21, 22, 32, 245, 258, 268; Pigment Txiv kab ntxwv 24; Pigment Violet 13, 17, 50; Pigment Blue 20.

Naphthol cov khoom yuav tsum tau muab cia rau hauv cov thawv kaw nruj nreem nyob rau hauv qhov chaw txias, qhuav, thiab qhov dej zoo - qhov cua. Kev raug rau lub hnub ncaj qha, tshav kub, noo noo, thiab huab cua yuav tsum raug zam, vim tias cov xwm txheej no tuaj yeem cuam tshuam cov khoom lag luam ruaj khov thiab ua haujlwm. Nws raug pom zoo kom khaws cov khoom tiv thaiv los ntawm lub teeb thiab deb ntawm cov tshuaj tsis sib xws. Raws li kev cia khoom kom raug, cov khoom tswj hwm nws qhov zoo thiab kev ua tau zoo thoob plaws hauv lub txee lub neej.