Monomer
Hangzhou Weitong Nanomaterials Co., Ltd. yog ib lub lag luam tshiab tsom rau ntawm thaj chaw ntawm nanomaterials, nrhiav tau nyob rau hauv 2015. Peb lub Hoobkas muaj peev xwm ua tau zoo thiab muaj peev xwm tsim tau ntau yam khoom zoo. Peb lub Hoobkas tau txais kev tswj hwm nruj kom ntseeg tau tias cov khoom ua tau raws li cov qauv zoo. Peb muaj cov kws tshaj lij kev tshaj lij thiab cov cuab yeej tsim khoom siab heev, nrog rau kev pabcuam zoo tom qab muag, muab cov neeg siv khoom nrog ntau yam kev daws teeb meem. Peb siv zog rau kev nruam ntej thiab kev ua kom zoo kom tau raws li peb cov neeg siv khoom xav tau thiab kev cia siab, thiab mus rau pem hauv ntej los ua lub tuam txhab tshuaj lom neeg hauv ntiaj teb.
Vim li cas thiaj xaiv US
Peb lub Hoobkas:Hangzhou Weitong Nanomaterials Co., Ltd. yog ib lub lag luam tshiab tsom rau ntawm thaj chaw ntawm nanomaterials, nrhiav tau nyob rau hauv 2015. Peb lub Hoobkas muaj peev xwm ua tau zoo thiab muaj peev xwm tsim tau ntau yam khoom zoo.
Peb cov khoom:Peb ntau yam ntawm NVP-raws li cov khoom lag luam npog ntau yam kev ua haujlwm raws li kev lag luam sib txawv. Qhov no suav nrog homopolymer series (K15-K120), copolymer series (VA64 hmoov, V64E, VA64W, 73W, 37E, 37W), thiab kab sib txuas (PVPP XL-10, PVPP{11 }}, povidone-iodine pvpI). Cov khoom no pom cov ntawv thov thoob plaws ntau qhov chaw, ua haujlwm ruaj khov, dispersants, coatings, inks, thiab adhesives.
Kev tswj kom zoo:Peb muaj daim ntawv pov thawj ISO9001, thiab peb nruj me ntsis ua raws li GMP cov qauv tsim khoom.
Kev pabcuam zoo tom qab muag:Peb muaj cov kev pab cuam tom qab muag zoo, yog li txawm tias koj muaj kev tsis ntseeg txog cov khoom, koj tuaj yeem tiv tauj peb, peb yuav muab cov phiaj xwm txaus siab rau koj.
NMP yog dab tsi
N-Methyl-2-pyrrolidone (NMP) yog ib qho organic compound uas muaj ib tug 5-membered lactam. Nws yog cov kua uas tsis muaj xim, txawm tias cov qauv tsis huv tuaj yeem tshwm daj. Nws yog miscible nrog dej thiab nrog feem ntau cov organic solvents. Nws kuj yog nyob rau hauv chav kawm ntawm dipolar aprotic kuab tshuaj xws li dimethylformamide thiab dimethyl sulfoxide. Nws yog siv nyob rau hauv petrochemical, polymer thiab roj teeb industries raws li ib tug hnyav, exploiting nws nonvolatility thiab muaj peev xwm yaj ntau yam ntaub ntawv (xws li polyvinylidene difluoride, PVDF). NMP yog tsim los ntawm kev hloov pauv ester-rau-amide, los ntawm kev kho gamma-butyrolactone nrog methylamine. Lwm txoj kev muaj xws li ib nrab hydrogenation ntawm N-methylsuccinimide thiab cov tshuaj tiv thaiv ntawm acrylonitrile nrog methylamine ua raws li hydrolysis. Kwv yees li 200,000 txog 250,{10}} tons yog tsim txhua xyoo.
Qhov zoo ntawm NMP
NMP yog cov kuab tshuaj muaj txiaj ntsig zoo nrog qhov zoo ntawm qhov tsis muaj tshuaj lom, kub kub taw tes, qis corrosiveness, siab solubility, tsis muaj viscosity, tsis tshua muaj volatility, zoo stability thiab yooj yim rov qab.
NMP yog nws cov khoom zoo heev dispersion. NMP yog cov kuab tshuaj muaj txiaj ntsig zoo nrog kev solubility siab, tsis muaj viscosity, thiab kev ruaj ntseg zoo. Nws yog ib tug polar solvent uas yog siv los yaj lub binder, PVDF, thiaj li hais tias PVDF tuaj yeem coated txhuas ntawv ci zoo.
Kev lag luam kev siv ntawm NMP
N-methyl pyrrolidone, paub txog nws zoo heev solubility thiab siab flashpoint, yog nce nrov nyob rau hauv ntau yam lag luam, tshwj xeeb tshaj yog nyob rau hauv kev tsim cov lithium-ion roj teeb. Nov yog qee qhov kev lag luam uas nws siv hauv:
Electronics thiab roj teeb Manufacturing
NMP ua lub luag haujlwm tseem ceeb hauv kev tsim cov roj teeb lithium-ion, qhov tseem ceeb rau kev siv hluav taws xob niaj hnub thiab hluav taws xob tsheb. Nws yog tshwj xeeb tshaj yog zoo nyob rau hauv dissolving binding cov ntaub ntawv uas siv nyob rau hauv cov roj teeb electrodes, pab rau cov efficiency thiab kev cia siab ntawm cov roj teeb no.
Pharmaceuticals
Hauv kev lag luam kws tshuaj, NMP yog siv rau kev rho tawm, ua kom huv, thiab crystallization ntawm ntau cov khoom xyaw tshuaj. Nws cov txiaj ntsig zoo li cov kuab tshuaj ua kom muaj purity siab thiab zoo hauv cov khoom siv tshuaj.
Xim thiab Txheej Kev Lag Luam
NMP yog cov kuab tshuaj zoo tshaj plaws hauv cov xim thiab txheej strippers vim nws muaj peev xwm yaj ntau yam ntawm cov polymers thiab resins zoo. Nws siv nyob rau hauv no sector underscores nws versatility thiab efficiency.
Tus neeg saib xyuas huv
Cov khoom hnyav ntawm NMP ua rau nws yog qhov kev xaiv zoo tshaj plaws rau kev ntxuav daim ntaub ntawv, tshwj xeeb tshaj yog nyob rau hauv kev lag luam chaw. Nws zoo tshem cov roj, roj, thiab lwm yam kab mob los ntawm cov hlau, yas, thiab tawv.
Agricultural Products
Hauv kev ua liaj ua teb, NMP yog siv rau hauv kev tsim cov tshuaj tua kab thiab chiv, txhim kho lawv cov txiaj ntsig thiab kev ruaj ntseg.
Cov ntawv thov no qhia txog NMP qhov kev ua tau zoo raws li qhov hnyav thoob plaws ntau qhov chaw. Nws muaj peev xwm yaj cov ntaub ntawv sib txawv, ua ke nrog nws cov thermal stability thiab tsis tshua muaj toxicity, ua rau nws yog ib qho tseem ceeb tivthaiv hauv ntau cov txheej txheem kev lag luam.
Yuav ua li cas yog NMP Recycled
NMP tuaj yeem rov ua dua tshiab siv cov txheej txheem ntau-theem distillation los cais cov kuab tshuaj rau hauv nws cov khoom ntawm qhov kub qis tshaj qhov kub kub. Cov khib nyiab raug tshem tawm thiab cov kuab tshuaj ntxuav huv yog sab laug. Koj tuaj yeem cia siab tias yuav rov qab tau txog li 95% ntawm NMP siv. Cov chaw tsim khoom roj teeb tuaj yeem siv siab dua 10,000 txog 20,000 NMP ib hlis, uas hauv ib xyoos tuaj yeem txhais tau ntau dua 240,000 NMP.
Recycling yog ib puag ncig thiab tus nqi-phooj ywg rau kev yuav NMP tshiab thiab pov tseg cov kuab tshuaj siv tom qab siv ib zaug.
Nrog cov kuab tshuaj rov ua dua tshiab, nkim NMP tuaj yeem rov qab tau thiab rov qab siv dua, txo tus nqi ntawm kev yuav thiab pov tseg cov kuab tshuaj ib zaug. Kev rov ua dua ntawm NMP yog qhov txiaj ntsig loj heev raws li cov kuab tshuaj vim nws tsis ua rau muaj kev phom sij ib puag ncig zoo li lwm cov kuab tshuaj thaum lawv tau siv.
Yuav Ua Li Cas NMP
Muab nws cov tshuaj lom neeg, tuav NMP yuav tsum ua raws li cov txheej txheem kev nyab xeeb tshwj xeeb. Nws yog ib qho tseem ceeb uas yuav tsum hnav cov khoom tiv thaiv tus kheej tsim nyog (PPE), nrog rau cov hnab looj tes, tsom iav, thiab khaub ncaws tiv thaiv, kom tsis txhob muaj tawv nqaij thiab qhov muag. Ua haujlwm nyob rau hauv qhov chaw uas muaj cua zoo kom txo qis kev pheej hmoo ntawm kev nqus pa thiab siv lub tshuab ua pa kom zoo yog tias tsim nyog.
Khaws NMP rau hauv qhov chaw txias, qhuav, thiab qhov cua zoo, kom deb ntawm tshav ntuj ncaj qha thiab tshav kub. Xyuas kom meej tias cov thawv ntim khoom tau kaw nruj nreem thiab sau kom meej meej. Nws tseem yog ib qho tseem ceeb kom ua raws li cov cai hauv zos rau khaws cov tshuaj, tshwj xeeb tshaj yog rau cov khoom xws li NMP.
Nyob rau hauv cov ntaub ntawv ntawm ib tug nchuav los yog xau, xyuas kom meej tam sim ntawd ntim thiab ntxuav. Siv cov ntaub ntawv tsis zoo xws li xuab zeb lossis vermiculite los nqus cov txeej, thiab muab pov tseg raws li cov pov tseg uas muaj kev phom sij raws li cov cai hauv cheeb tsam. Tsis txhob cia cov kuab tshuaj nkag mus rau hauv cov dej los yog cov kav dej.
Kev pov tseg ntawm NMP yuav tsum ua raws li cov cai hauv cheeb tsam ib puag ncig. Xav txog cov kev xaiv rov ua dua tshiab, vim tias NMP tuaj yeem siv tau zoo thiab rov siv dua, txo cov nqi thiab kev cuam tshuam ib puag ncig.
Kev cob qhia tsis tu ncua thiab kev paub txog cov neeg ua haujlwm tuav NMP yog qhov tseem ceeb. Cov kev pab cuam no yuav tsum them rau kev tuav kom raug, muaj feem yuav raug mob nkeeg, cov txheej txheem teb thaum muaj xwm txheej ceev, thiab qhov tseem ceeb ntawm cov cuab yeej tiv thaiv tus kheej.
Los ntawm kev nkag siab thiab siv cov kev coj ua kom raug thiab khaws cia rau NMP, kev lag luam tuaj yeem ua kom muaj kev nyab xeeb ua haujlwm ib puag ncig thaum ua kom muaj txiaj ntsig zoo ntawm cov kuab tshuaj ntau yam no. Tshooj lus no muab cov lus qhia tseem ceeb rau kev lag luam thiab cov kws tshaj lij uas ua haujlwm nrog NMP tsis tu ncua, hais txog kev nyab xeeb, kev tswj hwm, thiab lub luag haujlwm ib puag ncig.
N-methylpyrrolidone (NMP) yog polar aprotic hnyav. Nws muaj qhov zoo ntawm qhov kub kub, muaj zog polarity, tsis tshua muaj viscosity, muaj zog solubility, tsis muaj corrosion, tsis tshua muaj toxicity, zoo tshuaj thiab thermal stability, thiab lwm yam. Nws yog siv nyob rau hauv lub teb ntawm aromatic extraction, purification thiab sib cais. ntawm acetylene, olefins, thiab diolefins, polymer solvents thiab polymerization solvents. Nrog rau kev loj hlob sai ntawm domestic polyamide, polyimide, polyphenylene sulfide thiab lwm yam high-strength engineering plastics thiab high-strength fibers, qhov zoo thiab kev thov ntawm N-methylpyrrolidone tau muab tso rau pem hauv ntej cov kev xav tau ntau dua.
Tam sim no, muaj peb lub ntsiab kev lag luam ntau lawm rau N-methylpyrrolidone: a) -butyrolactone (GBL) thiab monomethylamine (MMA) yog reacted rau synthesize N-methylpyrrolidone; b) -butyrolactone thiab mixed amines Synthesis ntawm N-methylpyrrolidone los ntawm cov tshuaj tiv thaiv; c) 1,4-Butanediol dehydrogenation-amination los npaj N-methylpyrrolidone. Lub peev xwm ntau lawm ntawm txawv teb chaws N-methylpyrrolidone yog qhov tseem ceeb hauv ob peb lub tuam txhab loj. Muaj ntau tshaj 10 lub tuam txhab hauv tsev koom nrog kev tsim N-methylpyrrolidone, tab sis qhov ntsuas ntawm cov khoom siv kuj yog me me, cov khoom siv raw khoom muaj ntau, thiab cov khoom lag luam zoo ruaj khov tsis zoo, cov cuab yeej siv ntau lawm yuav tsum tau txhim kho. Tam sim no, qhov pom tseeb hauv N-methylpyrrolidone txhua xyoo cov zis yog 53 kt / a, thiab nws loj hlob ntawm tus nqi txhua xyoo ntawm 6% mus rau 8%. Lub zeem muag ntawm NMP yog qhov dav.
NMP (C5H9NO, molecular hnyav 99, boiling point 203 degree) muaj pH =7 ~ 9. Nws yog weakly alkaline nrog me ntsis ammonia tsw. Nws yog xim tsis muaj xim rau lub teeb daj pob tshab oily kua teej tug mus rau nitrogen heterocyclic tebchaw. Nws muaj kev ruaj ntseg tshuaj zoo. Nws yog qhov ruaj khov nyob rau hauv ib puag ncig nruab nrab. Vim lub nplhaib pyrrole nyob rau hauv nws cov qauv molecular, NMP yog nquag hydrolysis nyob rau hauv ib qho chaw alkaline. NMP tuaj yeem oxidized los ntawm hydroxyl hauv cov dej theem los tsim 66 cov khoom, ntawm 24 tuaj yeem txheeb xyuas. NMP tau txais cov tshuaj tiv thaiv hydrolysis nyob rau hauv ib puag ncig acidic nrog dej los tsim 4-methylaminobutyric acid, uas yog ntxiv decomposed rau hauv succinic acid semiamide.
Thiab nws muaj siab thermal stability. Thaum tsis muaj dej thiab huab cua, qhov decomposition kub yog li 350 degree. Txawm hais tias cov xim ntawm NMP hloov daj ntawm 200 degree, nws tsis cuam tshuam rau nws txoj kev siv. Thaum NMP ntsib huab cua thiab dej thaum siv, nws yooj yim rau decomposition cov tshuaj tiv thaiv. Nyob rau hauv lub xub ntiag ntawm oxygen thiab dej nyob rau tib lub sij hawm, NMP tuaj yeem raug hydrolysis thiab oxidation cov tshuaj tiv thaiv ntawm qhov kub thiab txias ntawm li {2}} degree .
NMP yog siv los ua cov kuab tshuaj hauv electrode txheej ntawm cov roj teeb tsim. Nws muaj txiaj ntsig zoo rau kev tawg polyvinylidene fluoride (PVDF) uas yog cov khoom siv ntau tshaj plaws siv hauv kev khi ntawm anodes thiab cathodes hauv kev tsim cov roj teeb lithium (Li) .
NMP suav hais tias yog qhov mus-rau hnyav thaum tsim Li roj teeb vim tias nws tsis tshua muaj zog, rov ua dua tshiab, thiab lub teeb nyem siab dua ces lwm cov kuab tshuaj hloov.
NMP tau nce hauv kev thov vim tias kev lag luam tsheb yuav tsum tau ua kom tau raws li qhov xav tau ntawm cov tsheb fais fab. Cov tsheb hluav taws xob xav tau cov roj teeb lithium-ion txhawm rau tsim, uas ua rau NMP cov khoom nrov vim nws yog ib qho tseem ceeb hauv kev tsim cov roj teeb.
Yuav ua li cas los tsim N-Methyl-2-pyrrolidone
NMP, tseem hu ua N-methyl- -pyrrolidinone; N-methyl- -pyrrolidone, N-methyl- - butyrolactam, N-methyl-2-pyrrolidinone, N-methyl-2-pyrrolidone, n-methylpyrrolidinone, 1-methyl -2-pyrrolidinone thiab 1-methyl-2-pyrrolidone, yog ib qho derivative ntawm -butyrolactone. Cov mis mos molecular: C5H9NO, molecular hnyav: 99.1311. NMP yog cov kua tsis muaj xim thiab pob tshab nrog cov ntxhiab tsw ammonia me ntsis. Nws yog ib tug highpolarity, tshuaj thiab thermally ruaj khov siab-boiling hnyav (boiling point: 202 degree). Nws yog tag nrho miscible nrog dej, cawv, ether, ketone, ethyl acetate, chloroform, thiab benzene. Lub solubility ntawm unsaturated hydrocarbons xws li alkynes, olefins, thiab diolefins nyob rau hauv NMP yog siab dua li ntawm saturated hydrocarbons. Tsis tas li ntawd, ntau hom polymers kuj tuaj yeem yaj hauv NMP.
Raws li cov khoom siv raw siv, ntau cov txheej txheem xws li succinonitrile txoj kev, condensation ntawm -butyrolactone thiab methylamine, 4- oxidized methyl butyrate txoj kev, thiab 1, 4-succinic acid txoj kev rau kev tsim NMP. Txawm li cas los xij, tsuas yog cov txheej txheem tam sim no ua haujlwm hauv kev lag luam yog cov condensation los ntawm -butyrolactone thiab methylamine. Cov txheej txheem thev naus laus zis zoo sib xws hauv txhua tus tsim NMP, tab sis qhov sib txawv tseem ceeb yog txoj kev tsim khoom rau -butyrolactone nruab nrab. tsim cov txheej txheem uas suav nrog dehydrogenating BDO rau -butyrolactone thiab tom qab ntawd condensing nrog methylamine los tsim NMP. Mitsubishi Chemical Corporation ntawm Nyiv tau tsim cov txheej txheem uas suav nrog hydrogenation ntawm maleic anhydride rau -butyrolactone thiab condensation nrog methylamine kom tawm los NMP. Synthesis ntawm NMP los ntawm condensation ntawm -butyrolactone thiab methylamine nyob rau hauv tsis muaj ib tug catalyst tau tsim. -Butyrolactone thiab methylamine yog reacted ntawm qhov kub ntawm 240-285 degree thiab lub siab ntawm 5.0-8.0 MPa rau 2-3 h, thiab qhov tshwm sim NMP yog purified los ntawm fractional distillation kom tau high-purity khoom. Nws qhov kev sib npaug sib npaug yog raws li hauv qab no:
Cov tshuaj tiv thaiv yog ua nyob rau hauv ob kauj ruam. Thawj kauj ruam yog cov tshuaj tiv thaiv ntawm -butyrolactone nrog methylamine los ua N-methyl- -hydroxybutanamide, uas yog cov tshuaj tiv thaiv rov qab thiab tuaj yeem nqa tawm ntawm qhov kub thiab txias. Cov kauj ruam thib ob yog dehydrating thiab cyclizing N-methyl- -hydroxybutanamide rau NMP nyob rau hauv qhov kub thiab txias. Cov tshuaj tiv thaiv ob-kauj ruam tuaj yeem nqa tawm batch-wise hauv autoclave lossis tsis tu ncua hauv tubular reactor.
Txij li thaum lub boiling point ntawm NMP (204 degree) yog heev ze rau cov raw khoom -butyrolactone (206 degree), cais lawv los ntawm fractional distillation yog nyuaj. Yog li ntawd, ib tug loj tshaj ntawm methylamine yog siv nyob rau hauv cov tshuaj tiv thaiv (molar ratio ntawm methylamine rau -butyrolactone los ntawm 1.5 mus rau 1.8) kom tiav conversion ntawm -butyrolactone, simplifying cov khoom sib cais txheej txheem. Anhydrous methylamine tuaj yeem siv los ua cov khoom siv raw, tab sis ntxiv qee cov dej rau cov tshuaj tiv thaiv tuaj yeem ua rau muaj kev xaiv ntawm NMP. Cov tshuaj tiv thaiv yog raug rau fractional distillation nyob rau hauv lub amine tshem tawm ntauwd, nyob rau hauv uas unreacted methylamine distilled los ntawm sab saum toj thiab recycled rau lub reactor. Cov khoom hauv qab ntawm tus pej thuam yog nkag mus rau hauv lub teeb feem tshem tawm ntauwd, thiab tag nrho cov dej seem yog distilled los ntawm sab saum toj ntawm tus pej thuam. Lub teeb feem yog sau los ntawm sideline ntawm tus pej thuam sab sauv. Cov khoom hauv qab ntawm lub teeb feem tshem tawm ntauwd yog nkag mus rau hauv cov khoom hnyav feem tshem tawm ntauwd. Cov feem hnyav yog muab tshem tawm hauv qab ntawm tus pej thuam, thiab NMP ntawm purity siab yog tau los ntawm sab saum toj. Cov txiaj ntsig ntawm NMP yog nce txog 99% raws li -butyrolactone.
Specifications
|
Daim ntawv |
Hmoov |
|
Ign. seem |
Tsawg dua los yog sib npaug rau 0.5% |
|
InChI key |
WHNWPMSKXPGLAX-UHFFFAOYSA-N |
|
InChI |
1S/C6H9NO/c1-2-7-5-3-4-6(7)8/h2H,1,3-5H2 |
|
Mol wt |
Nruab Nrab Mw ~ 29, 000 |
|
Qib zoo |
200 |
N-Methyl-2-pyrrolidone tau yooj yim nqus los ntawm tib neeg daim tawv nqaij plab hnyuv thiab ua pa ib ntsuj av. Qhov permeability ntawm cov kuab tshuaj ua lag luam los ntawm tib neeg cov tawv nqaij tau raug tshawb xyuas hauv kev tshawb fawb, thiab qhov permeability ntawm N-Methyl-2-pyrrolidone tau pom tias siab dua li ntawm lwm cov kuab tshuaj. Nws yog sai sai faib nyob rau hauv feem ntau ntawm lub cev, nrog ib tug kuj siab concentration nyob rau hauv cov ntaub so ntswg ntawm lub cev. Kev rov tshwm sim dua tuaj yeem yog ib qho laj thawj rau kev xeeb tub. Qhov ntim ntawm kev faib tawm (Vd) ntawm N-Methyl-2-pyrrolidone yog 0.7 L/kg, thiab ib nrab-lub neej ntawm tsis hloov N-Methyl-2-pyrrolidone hauv cov ntshav tom qab qhov ncauj los yog dermal tswj thiab nqus tau pa yog 9-12 h thiab 4 h, raws li. N-Methyl-2-pyrrolidone yog hyroxylated rau 5-hydroxy-N-methyl-2-pyrrolidone (5-HNMP) los ntawm isoform 1E ntawm cytochrome P450 (CYP1E) thiab oxidized rau N -methylsuccinimide (MSI); MSI ces hyroxylated rau 2-hydroxy-N-methylsuccinimide (2-HMSI). 2-Pyrrolidone tau tshaj tawm tias yog lwm cov metabolite ntawm N-Methyl-2-pyrrolidone.
Nyob rau hauv nas, nws yog absorbed sai sai tom qab nqus tau pa, qhov ncauj, thiab dermal tswj, faib thoob plaws hauv lub cev, thiab tshem tawm tsuas yog los ntawm hydroxylation rau polar tebchaw, uas yog excreted los ntawm cov zis. Kwv yees li 80% ntawm cov tshuaj tau muab tso tawm raws li nws thiab nws cov metabolites hauv 24 teev. Tej zaum koob tshuaj daj xim ntawm cov zis nyob rau hauv nas yog pom. Cov metabolite loj yog 5-hydroxy-N-methyl-2-pyrrolidone.
FAQ