Methyl methacrylate

Dzina lachi China: methyl methacrylate, lotchedwa MMA ndi chinthu chofunikira kwambiri chomwe chingathe kudzipanga polymer kapena copolymer ndi ma monomers ena pamaso pa kuwala ndi kutentha kapena ma catalyst. Chimagwiritsidwa ntchito kwambiri popanga polymethyl methacrylate (PMMA mwachidule) ndi polyvinyl chloride impact modifiers (monga ACR, MBS). Chingagwiritsidwenso ntchito mu zokutira, zomatira, kusindikiza nsalu ndi zopaka utoto ndi madera ena. Chimagwiritsidwa ntchito mosiyanasiyana.

Njira yayikulu yopangira MMA
Pali njira zambiri zopangira MMA, kuphatikizapo njira ya acetone cyanohydrin (njira ya ACH), njira ya isobutylene/tert-butanol oxidation (njira ya C4), njira ya ethylene (njira ya C2), njira ya methanol-methyl acetate (njira ya C1), ndi zina zotero, malinga ndi momwe zilili. Nambala ya kaboni ya zinthu zopangira ndi yosiyana ndipo ingagawidwe m'njira ya C1, njira ya C2, njira ya C3 ndi njira ya C4.
Kuchokera pamalingaliro apadziko lonse lapansi, njira yopangira yomwe imagwiritsidwa ntchito kwambiri ndi njira ya ACH. Ukadaulo wa njira imeneyi ndi wokhwima, wokhazikika komanso wosavuta, womwe umapanga pafupifupi 61.6% ya zomwe dziko lapansi limapanga, makamaka ku North America, Western Europe, ndi China; kutsatiridwa ndi njira ya C4, yomwe idapangidwa ndi Japan Shokubai Chemical Yopangidwa ndi Industrial Corporation ndi Mitsubishi Rayon Company mu 1982, ukadaulowu wapita patsogolo, zinthu zopangira sizikhala ndi poizoni komanso zopanda vuto, pali zinthu zochepa zomwe zimapangidwa ndipo mtengo wake ndi wotsika, womwe umapanga pafupifupi 30.5% ya zomwe dziko lonse limapanga.

Katundu wa Mankhwala

Madzi opanda mtundu, osinthasintha mosavuta. Amasungunuka mu zinthu zosiyanasiyana zachilengedwe monga ethanol, ether, acetone, ndi zina zotero. Amasungunuka pang'ono mu ethylene glycol ndi madzi.

Kagwiritsidwe:

Amagwiritsidwa ntchito makamaka ngati monomer yagalasi lachilengedwe, komanso amagwiritsidwa ntchito popanga mapulasitiki ena, zokutira, ndi zina zotero.

chilengedwe

Nambala ya CAS 80-62-6

Fomula ya molekyulu C5H8O2

Kulemera kwa maselo 100.12

EINECS Nambala 201-297-

Malo osungunuka -48°C (lit.)

Malo otentha 100°C (lit.)

Kuchulukana 0.936g/mL pa 25°C (lit.)

Kuchuluka kwa nthunzi 3.5 (vsair)

Kuthamanga kwa nthunzi 29mmHg (20°C)

Malo owunikira 50°F

Malo osungira 2-8°C Kusungunuka 15g/l Kupanga Ufa wa kristalo kapena kristalo

Zambiri zamalumikizidwe

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