Polyethylene glycol dimethyl ether, tseem hu ua polyethylene glycol dimethyl ether, abbreviated li DMPE, yog 20
Ib qho hnyav tsim los ntawm Allied Chemical Corp hauv xyoo 1960, ua lag luam li Selexol.
Lub koom haum tshawb fawb ntawm Tuam Tshoj Nanhua (Group) Corporation tau pib tshawb fawb los ntawm kev tshuaj ntsuam hnyav hauv xyoo 1980s thiab txheeb xyuas qhov pom ntawm cov kuab tshuaj zoo tshaj plaws rau polyethylene glycol dimethyl ether (lub npe NHD). Lub zog physicochemical ntawm cov kuab tshuaj no zoo ib yam li Selexol, tab sis nws cov ntsiab lus thiab molecular hnyav sib txawv. Cov thev naus laus zis no tau txais daim ntawv pov thawj hauv Suav teb thiab tau lees paub los ntawm Ministry of Chemical Industry yav dhau los.
Polyethylene glycol dimethyl ether feem ntau yog hais txog kev sib xyaw nrog ib qho kev faib tawm ntawm homologues, nrog rau cov qauv qauv CH30 (CH2CH20) nCH3. Txawv polymerization degrees n muaj cov khoom sib txawv ntawm lub cev. Thaum n<10, it is a colorless or light yellow transparent liquid. As n increases, its viscosity gradually increases until it becomes a white or soil gray solid. Polyethylene glycol dimethyl ether is a non-polar substance with stable chemical properties and is not easily reactive. Its liquid has strong solubility and exhibits various adaptability, with multiple uses.
Polyethylene glycol dimethyl ether muaj ntau yam kev siv hauv textile printing thiab dyeing kev lag luam, xws li softener, spinning oil agent, pretreatment agent, thiab tu tus neeg saib xyuas. Japanese patent (JP89192833) tshaj tawm hais tias ib qho nyuaj ntawm imidazoline ntsev, algicidal amines, thiab polyethylene glycol dimethyl ether (n=2-14) tuaj yeem siv los ua softener rau siab suav textiles. Teb Chaws Asmeskas patent (US655044) qhia tias polyethylene glycol dimethyl ether (n=5-44) tuaj yeem siv los ua tus neeg sawv cev nthuav dav rau dyeing anionic dyes ntawm silk dyed paj rwb fabrics, uas muaj wrinkle kuj. Tus neeg saib xyuas tu tsim nrog polyethylene glycol dimethyl ether (n=1-3) tuaj yeem tshem tawm cov xim stains ntawm cov ntaub.
Xyoo 1998, Jiangsu Yixing Tianyin Chemical Co., Ltd. hauv Suav teb tau tsim cov chaw tsim khoom nrog cov khoom tsim tawm txhua xyoo ntawm 2000 tons ntawm polyethylene glycol dimethyl ether thiab khaws cia thaj chaw txhim kho, uas tuaj yeem yooj yim nthuav cov peev txheej ntau lawm rau 4000 tons hauv ib xyoos. Thaum Lub Rau Hli 1, 1999, Technology Development Center ntawm Tuam Tshoj Petroleum thiab Chemical Corporation tau ua qhov kev ntsuam xyuas kev tshawb fawb thiab thev naus laus zis ntawm qhov project "Synthesis thiab Application of New Solvent Polyethylene Glycol Dimethyl Ether (NHD)" ntawm Jiangsu Tianyin Chemical Co., Ltd. . Daim ntawv pov thawj tus lej yog "Sinopec Jianzi (1999) No. 63". Pawg neeg soj ntsuam kev sib koom ua ke ntseeg tias kev tsim cov thev naus laus zis ntawm NHD cov kuab tshuaj tshiab yog qhov paub tab thiab qib siab, cov txheej txheem tsim tawm yog qhov tshiab, cov khoom sib khi ntawm etherification yog siab (txog 99%), cov ntsiab lus chloride ion tsawg, cov active Cov ntsiab lus ntawm cov khoom muaj siab, thiab cov ntsiab lus impurity tsawg. Cov tshuab tsim khoom thiab kev ua tau zoo ntawm cov kuab tshuaj no yog nyob rau theem ua hauv Suav teb. Pawg neeg soj ntsuam kev sib koom ua ke pom zoo kom nthuav dav kev txhawb nqa thiab kev thov. Cov khoom lag luam zoo ntsuas ntawm lub tuam txhab polyethylene glycol dimethyl ether yog:
Cov yam ntxwv ntawm lub tuam txhab cov khoom yog:
(1) Cov khoom muaj qib siab ntawm etherification thiab zoo tshuaj thiab thermal stability rau siab acidity, alkalinity media, thiab kub.
(2) Cov ntsiab lus chloride ion yog tsawg heev thiab tsis muaj kev cuam tshuam rau cov khoom siv hlau stainless.
Cowint yog lub Hoobkas DTF loj tshaj plaws hauv Suav teb
