Lihlahisoa
Dipropylene Glycol
Foromo ea Sebopeho
Lintho Tsa 'Mele
Ponahalo: metsi a se nang mmala, a sa nkheng
Sebaka se qhibilihang: -32°C
Sebaka se belang:90-95°C1mmHg
Boima:1.023g/mLat25°C(lit.)
Boima ba mouoane:4.6(vsair)
Khatello ea mouoane:<0.01mmHg(20°C)<br /> Refractivity:n20/D1.441(lit.)
Leqhubu la Lehlaseli:280°F
PH boleng:6-7(100g/l,H2O,20°C)
Lintlha tsa Polokeho
Ke tsa thepa e kotsi
Melao ea mekhoa: 2909499000
Sekhahla sa Puseletso ea Lekhetho la Thepantle(%):13%
Kopo
Didipropylene glycol ke ntho e tahang, e sebelisoang haholo masimong e hlokang lisebelisoa tsa boleng bo holimo tse kang linoko, litlolo, litlolo le li-additives tsa lijo.Ea ho qetela e batla e le theko e tlaase, 'me e sebelisoa haholo e le solvent ea indasteri e sa hlokeng boleng bo phahameng ba DPG, hammoho le lisebelisoa tse tala bakeng sa tlhahiso ea polyester e sa tsitsang le varnish ea nitrocellulose.
(1) Dipropylene glycol ke mokelikeli o loketseng ka ho fetisisa bakeng sa litlolo tse ngata tsa monko le litlolo.Thepa ena e tala e na le metsi, oli le hydrocarbon co-solubility e ntle haholo 'me e na le monko o bobebe, ho teneha ha letlalo ho fokolang, chefo e tlase, kabo e tšoanang ea isomer le boleng bo holimo.
(2) Dipropylene glycol e ka boela ea sebelisoa e le moemeli oa ho kopanya le ho nosetsa ka mekhoa e mengata e fapaneng ea litlolo.Ho litlolo tse nkhang hamonate, dipropylene glycol e sebelisoa ho feta 50%;lits'ebetsong tse ling, dipropylene glycol hangata e sebelisoa ka tlase ho 10% ka boima ba 'mele.Lisebelisoa tse ling tse ikhethileng tsa sehlahisoa li kenyelletsa: litlolo tsa ho kobeha ha moriri, litlolo tse hloekisang letlalo (litlolo tse batang, lihlatsuoa tsa 'mele, litlolo le litlolo tsa' mele) li-deodorants, sefahleho, matsoho le lihlahisoa tsa tlhokomelo ea letlalo la 'mele, lihlahisoa tsa tlhokomelo ea letlalo tse mongobo le litlolo tsa molomo.
Boitokiso: Ka ketleleng ea 5L reaction, eketsa 30g ea sodium methanol, 750g ea propylene oxide le 2250g ea propylene glycol e le alkali catalyst, tjhaja naetrojene ho 0.3MPa, bulela ho sisinyeha, futhumatsa ho fihla ho 110 ℃ ka metsotso e 30, butle-butle lokolla nitrogen. ts'ebetso ea ho futhumatsa, boloka khatello ka kettle ho 0.3MPa ha u futhumatsa ho fihlela ho 120 ℃ ho Chemicalbook, nako ea karabelo 2 lihora.Ka mor'a hore karabelo e felile, pholisa fatše 'me u hatelle lintho tse metsi ka ketleleng.Sehlahisoa sa karabelo se ile sa hlahlojoa ke chromatography ea khase mme bohloeki ba sehlahisoa e ne e le 99.87%;sebaka sa leqhoa sa sehlahisoa se fumanoeng tlas'a boemo ba alkaline catalyst e ne e le 4 ℃.
