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Kev siv ntawm butanediol hauv tshuaj pleev ib ce
Butanediol, feem ntau yog acetylene thiab formaldehyde ua raw khoom.Nws yog siv los ua cov saw txuas rau kev tsim cov polybutylene terephthalate thiab polyurethane, thiab ua ib qho tseem ceeb raw khoom rau tetrahydrofuran, γ-butyrolactone, tshuaj thiab organic synthesis.Vim hais tias polybutylene terephthalate yog ib hom polyester nrog cov khoom zoo, qhov kev thov rau engineering plastics yog nce sai heev.
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Cov tshuaj lom neeg lom neeg heev - propargyl cawv
Propargyl Cawv, molecular mis C3H4O, molecular hnyav 56. Colorless pob tshab kua, volatile nrog pungent tsw, tshuaj lom, mob heev rau ntawm daim tawv nqaij thiab ob lub qhov muag.Ib qho nruab nrab hauv cov organic synthesis.Feem ntau yog siv rau kev sib txuas ntawm cov tshuaj tua kab mob thiab tshuaj tua kab mob sulfadiazine;Tom qab ib nrab hydrogenation, propylene cawv tuaj yeem tsim cov resin, thiab tom qab ua tiav hydrogenation, n-propanol tuaj yeem siv los ua raw khoom ntawm cov tshuaj tiv thaiv tuberculosis ethambutol, nrog rau lwm yam tshuaj thiab tshuaj.Muaj peev xwm inhibit acid rau hlau, tooj liab thiab npib tsib xee thiab lwm yam hlau corrosion, siv los ua xeb tshem tawm.Dav siv nyob rau hauv roj extraction.Nws kuj tseem siv tau los ua hnyav, stabilizer ntawm chlorinated hydrocarbons, tshuaj tua kab thiab tshuaj tua kab.Nws tuaj yeem siv rau kev tsim cov acrylic acid, acrolein, 2-aminopyrimidine, γ-picauline, vitamin A, stabilizer, corrosion inhibitor thiab lwm yam.
Lwm lub npe: propargyl cawv, 2-propargyl - 1-cawv, 2-propargyl cawv, propargyl cawv acetylene methanol.
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Propargyl yuav polymerize thiab tawg
Cov txheej txheem pib yog ua raws li cov cawv cawv propargyl ua hnyav, KOH ua lub hauv paus, cov tshuaj tiv thaiv cua sov kom tau txais lub hom phiaj.Cov tshuaj tiv thaiv tsis muaj kuab tshuaj dilution tej yam kev mob yuav tsawg impurities, cov tshuaj tiv thaiv yog huv si.
Xav txog qhov muaj peev xwm catalytic polymerization thiab explosive decomposition ntawm lub davhlau ya nyob twg alkynes, Amgen's Hazard Evaluation Lab (HEL) tau nqis los ua kev ntsuam xyuas kev nyab xeeb thiab pab hauv kev ua kom zoo dua ua ntej ntsuas txog li 2 litres ntawm cov tshuaj tiv thaiv.
DSC xeem qhia tau hais tias cov tshuaj tiv thaiv pib decompose ntawm 100 ° C thiab tso tawm 3667 J / g zog, thaum propargyl cawv thiab KOH ua ke, txawm tias lub zog poob mus rau 2433 J / g, tab sis lub decomposition kub kuj poob mus rau 85 ° C, thiab cov txheej txheem kub yog ze rau 60 ° C, kev nyab xeeb kev nyab xeeb yog ntau dua.
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1,4-butanediol (BDO) thiab nws cov kev npaj ntawm biodegradable yas PBAT
1, 4-butanediol (BDO);PBAT yog thermoplastic biodegradable yas, uas yog copolymer ntawm butanediol adipate thiab butanediol terephthalate.Nws muaj cov yam ntxwv ntawm PBA (polyadipate-1, 4-butanediol ester diol) thiab PBT (polybutanediol terephthalate).Nws muaj qhov zoo ductility thiab elongation ntawm kev tawg, nrog rau kev ua kom sov thiab ua haujlwm zoo.Tsis tas li ntawd, nws muaj biodegradability zoo heev thiab yog ib qho ntawm cov khoom siv biodegradable nrov tshaj plaws hauv kev tshawb fawb ntawm biodegradable plastics thiab daim ntawv thov zoo tshaj plaws hauv kev ua lag luam.
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Kev tsim tawm ntawm 1, 4-butanediol (BDO) los ntawm txoj kev txiv neej anhydride
Muaj ob txoj hauv kev tseem ceeb rau kev tsim BDO los ntawm maleic anhydride.Ib qho yog cov txheej txheem hydrogenation ncaj qha ntawm cov txiv neej anhydride tsim los ntawm Mitsubishi Petrochemical thiab Mitsubishi Chemical hauv Nyij Pooj xyoo 1970s, uas yog tus cwj pwm los ntawm kev tsim ib txhij ntawm BDO, THF thiab GBL hauv cov txheej txheem hydrogenation ntawm maleic anhydride.Cov khoom ntawm cov khoom sib txawv tuaj yeem tau txais los ntawm kev kho cov txheej txheem txheej txheem.Lwm qhov yog cov roj esterification hydrogenation txheej txheem ntawm maleic anhydride tsim los ntawm UCC tuam txhab thiab Davey Process Technology tuam txhab nyob rau hauv lub tebchaws United Kingdom, uas yog tsim los ntawm tsis tshua muaj siab carbonyl synthesis technology.Nyob rau hauv 1988, qhov rov ntsuam xyuas ntawm cov txheej txheem ntws tau tiav thiab kev tsim qauv tsim tau npaj.Xyoo 1989, TECHNOLOGY tau pauv mus rau DongSANG CHEMICAL COMPANY ntawm Kaus Lim Kauslim thiab DONGGU CHEMICAL Company ntawm Nyij Pooj los tsim 20,000-TON / xyoo 1, 4-BUtanEDIOL INDUSTRIAL ntau lawm cog.
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1, 4-butanediol zog
1, 4-butanediol hmoov
Lub npe: 1, 4-dihydroxybutane.
Abbreviation: BDO, BD, BG.
Lub npe Askiv: 1, 4-Butanediol;1,4 - butylene glycol;1, 4 - dihydroxybutane hmoov.
Cov mis mos molecular yog C4H10O2 thiab qhov hnyav molecular yog 90.12.CAS tus lej yog 110-63-4, thiab EINECS tus lej yog 203-785-6.
Cov qauv formula: HOCH2CH2CH2CH2OH.
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Propargyl cawv txheej txheem thiab kev lag luam tsom xam
Propargyl cawv (PA), tshuaj hu ua 2-propargyl cawv-1-ol, yog cov kua tsis muaj xim, tsis muaj kuab lom nrog cov nplooj uas muaj ntxhiab tsw.Qhov ceev yog 0.9485g / cm3, melting point: -50 ℃, boiling point: 115 ℃, flash point: 36 ℃, flammable, explosive: soluble nyob rau hauv dej, chloroform, dichloroethane, methanol, ethanol, ethyl ether, dioxane, tetrahydrofuran pyridine, me ntsis soluble nyob rau hauv carbon tetrachloride, insoluble nyob rau hauv aliphatic hydrocarbon.Propargyl cawv yog ib qho tseem ceeb ntawm cov khoom siv raw, dav siv hauv tshuaj, tshuaj lom neeg kev lag luam, electroplating, tshuaj tua kab, hlau, roj av thiab lwm yam.
Daim ntawv thov
Tshwj xeeb hauv kev tsim cov cawv propargyl, 1,4 butynediol thiab 3-chloropropyne
