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Khoom npe:1,3-Butadiene IB
Molecular hom:C4H6
CAS Nr:106-99-0
Cov khoom siv molecular:
Chemical Properties:
1,3-Butadiene yog ib qho yooj yim conjugated diene. Nws yog cov roj uas tsis muaj xim nrog cov ntxhiab tsw me me lossis roj av zoo li tsw thiab tsis sib haum nrog phenol, chlorine dioxide, tooj liab, thiab crotonaldehyde. Cov pa roj yog hnyav dua li huab cua thiab tuaj yeem taug kev hauv av; deb ignition yog ua tau. Nws yog ib qho tseem ceeb ntawm kev lag luam tshuaj siv los ua monomer hauv kev tsim cov roj hmab hluavtaws. Feem ntau butadiene yog polymerized los tsim cov roj hmab hluavtaws. Thaum polybutadiene nws tus kheej yog ib qho muag heev, yuav luag ua kua, cov khoom siv, polymers npaj los ntawm kev sib xyaw ntawm butadiene nrog styrene lossis acrylonitrile, xws li ABS, yog ob qho tib si tawv thiab elastic. Styrene-butadiene roj hmab yog cov khoom siv feem ntau siv rau kev tsim cov log tsheb. Me me ntawm butadiene yog siv los ua nylon los ntawm nruab nrab adiponitrile, lwm yam khoom siv roj hmab xws li chloroprene, thiab cov kuab tshuaj sulpholane. Butadiene yog siv nyob rau hauv industrial zus tau tej cov cyclododecatriene ntawm ib tug trimerisation tshuaj tiv thaiv.
Daim ntawv thov:
1,3-Butadiene yog cov khoom siv roj av uas tau txais los ntawm catalytic tawg ntawm naphtha orlight roj los yog dehydrogenation ntawm buteneor butane. Nws yog siv los tsim butadiene-styrene elastomer (rau log tsheb), hluavtaws roj hmab, thermoplastic elastomers, khoom noj khoom haus, thiab hauv kev tsim cov adiponitrile. Nws kuj tseem siv rau kev sib txuas ntawm cov organic los ntawm Diels-Aldercondensation.
Synthetic elastomers (styrene-butadiene, polybutadiene, neoprene, nitriles), ABS resins, tshuaj intermediate.
1,3-Butadiene tuaj yeem dhau los ua plaub qhov sib txuas cov tshuaj tiv thaiv nrog aryl Grignard reagents, thiab alkyl fluorides nyob rau hauv muaj cov nickel catalyst los ua 1,6-octadiene carbon compound hloov nrog alkyl thiab aryl pawg ntawm 3- thiab 8-txoj hauj lwm .
1,3-Butadiene yog ib qho txiaj ntsig zoo rau Diels Alder cov tshuaj tiv thaiv.
Nws tuaj yeem siv rau hauv cov synthesis ntawm cov hauv qab no:
1-Silyl-substituted 1,3-butadienes, los ntawm [RuHCl(CO)(PCy3)2]-catalyzed silylative coupling ntawm davhlau ya nyob twg (E)-1,3-dienes nrog vinylsilanes.
Synthetic roj hmab thiab thermoplastic resins.
Disilylated dimers los ntawm reacting nrog chlorosilanes.
Octa-2,7-dien-1-ol ntawm palladium catalyzed-hydrodimerization.