Methyl methacrylate

Dzina lachi China: methyl methacrylate, yomwe imatchedwa MMA ndi chinthu chofunika kwambiri cha mankhwala chomwe chingathe kudzipangira polima kapena copolymerize ndi ma monomers ena pamaso pa kuwala ndi kutentha kapena catalysts. Amagwiritsidwa ntchito kwambiri popanga polymethyl methacrylate (PMMA mwachidule) ndi polyvinyl chloride impact modifiers (monga ACR, MBS). Itha kugwiritsidwanso ntchito mu zokutira, zomatira, kusindikiza nsalu ndi zida zothandizira ndi zinthu zina. Ili ndi ntchito zambiri.

Main synthesis ndondomeko ya MMA
Pali njira zambiri zopangira MMA, kuphatikizapo njira ya acetone cyanohydrin (ACH njira), isobutylene/tert-butanol oxidation njira (C4 njira), ethylene njira (C2 njira), methanol-methyl acetate njira (C1 njira), etc., malinga ndi kwa iwo The raw material carbon Number ndi yosiyana ndipo akhoza kugawidwa mu C1 njira, C2 njira, C3 njira ndi C4 njira.
Kuchokera pamalingaliro apadziko lonse lapansi, njira yopangira yomwe imagwiritsidwa ntchito kwambiri ndi njira ya ACH. Njira zamakono zamakono ndizokhwima, zokhazikika komanso zosavuta, zomwe zimawerengera pafupifupi 61.6% ya dziko lapansi, makamaka ku North America, Western Europe, ndi China; kutsatiridwa ndi njira ya C4, yopangidwa ndi Japan Shokubai Chemical Developed by Industrial Corporation and Mitsubishi Rayon Company mu 1982, ukadaulo wapita patsogolo, zopangira sizikhala zapoizoni komanso zopanda vuto, pali zotsalira zochepa ndipo mtengo wake ndi wotsika, zowerengera. pafupifupi 30.5% ya zopanga zapadziko lonse lapansi.

Chemical Properties

Madzi opanda mtundu, osasinthasintha mosavuta. Kusungunuka mu zosungunulira zosiyanasiyana organic monga Mowa, efa, acetone, etc. Pang'ono sungunuka mu ethylene glycol ndi madzi.

Kagwiritsidwe:

Amagwiritsidwa ntchito makamaka ngati monomer wa galasi organic, komanso ntchito kupanga mapulasitiki ena, zokutira, etc.

chilengedwe

CAS No. 80-62-6

Molecular formula C5H8O2

Kulemera kwa molekyulu 100.12

EINECS No. 201-297-

Malo osungunuka -48°C (kuyatsa)

Malo otentha 100°C (lit.)

Kachulukidwe 0.936g/mL pa 25°C (lit.)

Kuchuluka kwa nthunzi 3.5 (vsair)

Kuthamanga kwa nthunzi 29mmHg (20°C)

Pothirira ndi 50°F

Zosungirako 2-8°C Kusungunuka kwa 15g/l Kupanga crystalline ufa kapena krustalo

Zambiri zamalumikizidwe

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