Pentaerythritol (PE)
CAS No . 115-77-5|Khoom Taw Qhia
Cov ntaub ntawv yooj yim
Lub npe:Pentaerythritol
Lwm lub npe:2,2-bis (hydroxymethyl) -1,3-propanediol; tetramethylolmethane; monopentaerythritol
Cov mis mos molecular:C5H12O4
Molecular Luj:136.15
CAS nr:115-77-5
2. Lub cev thiab tshuaj muaj zog
- Qhov tsos:Dawb crystalline khoom (hmoov los yog granular)
- Melting point:Kwv yees li 255-262℃(cov khoom purified melts ntawm txog 262 degree; nws nyhav rau sublime)
- Boiling point:Kwv yees li 276℃(30 mmHg); decomposes rau cua sov ntxiv
- Ceev:Kwv yees li 1.40 g / cm³ (20 degree)
- Solubility:Soluble hauv dej kub (li 7.2 g / 100 mL ntawm 25 degree); soluble hauv ethanol thiab glycerol; me ntsis soluble hauv ether thiab acetone; xyaum insoluble hauv benzene thiab roj av ether
- Kev ruaj ntseg:Chemically ruaj khov, tsis yog -hygroscopic thiab tsis muaj tshuaj lom. Ib tug tetrahydric cawv nrog plaub qhov sib npaug thawj pawg hydroxyl txheej txheem nyob rau hauv ib tug tsis tu ncua neopentyl (symmetric) qauv, conferring siab functionality thiab thermal stability.
3.Main Functions and Applications (Nws siv dab tsi?)
- Alkyd resins (cov ntaub ntawv tseem ceeb)
Ib qho tseem ceeb tetrafunctional polyol rau ntev - roj thiab luv - roj alkyd resins, imparting sai ziab, hardness dua, txhim kho gloss thiab superior huab cua tiv thaiv rau architectural thiab industrial coatings.
- Rosin esters (cov ntawv thov tseem ceeb)
Esterified nrog rosin los tsim pentaerythritol rosin esters, qhov nyiam tackifier rau kub-melt adhesives, siab-sensitive adhesives, txoj kev-kos xim thiab daim ntawv sizing, xa siab softening point thiab zoo heev adhesion.
- Synthetic lubricants
Esterified nrog fatty acids los yog C5-C10 acids los tsim pentaerythritol esters (POE), lub hauv paus ntsiab lus stocks rau dav hlau -engine lubricants (MIL-PRF-23699), tub yees lubricants thiab metalworking fluids, nrog zoo thermal fluidity thiab low-temperature stability.
- Radiation - kho tau monomers
Intermediate rau multifunctional acrylates xws li pentaerythritol triacrylate (PETA) thiab tetraacrylate
(PETTA), siv nyob rau hauv UV / EB txheej, inks thiab adhesives.
- Flame retardants thiab stabilizers
Lub tsev thaiv rau phosphorus-raws li intumescent nplaim retardants thiab PVC thaum tshav kub kub stabilizers / antioxidant intermediates.
- Lwm daim ntawv thov
Kuj tseem siv rau hauv polyester thiab polyurethane resins thiab ua ib qho nruab nrab rau cov tshuaj zoo.
4.A Benchmark-Level Industrial Masterpiece - Ib qho yooj yim Crafted "Crosslinking-Grade" Cornerstone Polyol!
- High mono-pentaerythritol cov ntsiab lus (Ntau dua lossis sib npaug li 98%) nrog tus nqi hydroxyl ntawm 1640–1650 mg KOH / g, tsis tshua ze rau qhov theoretical 1648.2 mg KOH / g - qhov tseeb, tsis tu ncua C5 tetraol nrog plaub qhov sib npaug reactive hydroxyls.
- Lub symmetric neopentyl qauv muab siab crosslink ceev, endowing lub resulting alkyd resins nrog sai qhuav, nyuaj films thiab superior gloss thiab durability.
- Ultra- cov tshauv qis ( Tsawg dua lossis sib npaug li 0.02%, feem ntau 0.006%) thiab ultra- cov dej noo tsawg ( Tsawg dua lossis sib npaug li 0.10%) txo qis cov tshuaj lom catalyst thiab cov tshuaj tiv thaiv sab nraud, ua kom cov txheej txheem huv, ruaj khov esterification thiab cov khoom siv rov ua dua tshiab.
- Daus- xim dawb (Pt-Co tsawg dua lossis sib npaug li 20) thiab siab melting point (Ntau dua lossis sib npaug li 255 degree) lav qhov zoo tshaj plaws, khaws cia thiab thauj tau yooj yim, thiab cov khoom sib xws - mus rau -batch kev ua tau zoo.
- Nws cov esters tsim cov khoom lag luam hauv qab rau siab - kub dav hlau - cav lubricants thiab qis - cov roj tub yees txias, muab qhov tshwj xeeb thermal- oxidative stability thiab kev khiav hauj lwm dav.
- "Dab tsi koj pom yog qhov koj tau txais" - txhua lub nkoj ntau nrog daim ntawv pov thawj tag nrho ntawm kev tshuaj xyuas npog mono-PE cov ntsiab lus, hydroxyl tus nqi, melting point, noo noo, tshauv thiab xim, yog li kev ua haujlwm hauv qab dej yog tag nrho traceable thiab reproducible.
Chromatographic Analysis - Pentaerythritol
Teeb liab: FID1 A (cov qauv silylated nrog BSTFA / TMCS rau trimethylsilyl ethers ua ntej txhaj tshuaj; Kem: DB-5, 30 m ×
0.25 hli × 0.25 μm; txhaj tshuaj temp 300 degree)
|
Lub sijhawm khaws cia (min) |
Hom |
Peak Dav (min) |
Peak Area |
Peak Qhov siab |
Thaj tsam% |
|
5.182 |
BB |
0.0316 |
1.887 |
1.104 |
0.0124 |
|
9.836 |
BV |
0.0602 |
14987.620 |
3402.516 |
98.5000 |
|
15.228 |
VB |
0.0684 |
137.536 |
42.808 |
0.9040 |
|
19.604 |
BB |
0.0752 |
42.742 |
12.206 |
0.2810 |
|
21.386 |
BB |
0.0818 |
27.781 |
7.612 |
0.1826 |
|
23.028 |
BB |
0.0876 |
18.254 |
4.918 |
0.1200 |
- Txoj kev txiav txim:Acetylation-alkali titration (theoretical hydroxyl tus nqi: 1648.2 mg KOH/g; specification: 1640–1650)
- Hydroxyl tus nqi 1645.6 mg KOH / g
- Txoj kev txiav txim:Karl Fischer titration (tus qauv: Tsawg dua lossis sib npaug rau 0.10%) Cov ntsiab lus noo noo 0.062%
- Txoj kev kuaj:Cov ntsiab lus tshauv los ntawm txoj kev ignition (kev txwv tshwj xeeb: Tsawg dua lossis sib npaug rau 0.02%)
- Cov ntsiab lus tshauv 0.006%
- Txoj kev kuaj:Capillary melting point method (tus qauv zoo: melting point Ntau dua lossis sib npaug rau 255 degree) Melting point 260.4 degree
- DTxoj kev etermination:Pt-Co / Hazen xim, 20% aqueous tov (specification txwv: Tsawg dua los yog sib npaug rau 20) Xim 12 Pt-Co
Khoom Specification
|
Khoom qauv |
Pentaerythritol (Mono-PE 98 Qib) |
|
Qhov tshwm sim |
Dawb crystalline hmoov |
|
Mono-pentaerythritol cov ntsiab lus (%) |
Ntau dua lossis sib npaug rau 98.0 |
|
Hydroxyl tus nqi (mg KOH / g) |
1640 – 1650 |
|
Melting point (zeeg) |
Ntau dua lossis sib npaug li 255 |
|
Cov ntsiab lus dej (%, Karl Fischer) |
Tsawg dua lossis sib npaug li 0.10 |
|
Cov ntsiab lus tshauv (%) |
Tsawg dua lossis sib npaug li 0.02 |
|
Xim (Pt-Co, 20% aqueous tov) |
Tsawg dua los yog sib npaug li 20 |
|
Dipentaerythritol cov ntsiab lus (%) |
Tsawg dua los yog sib npaug rau 1.0 |
|
Dawb aldehyde (raws li HCHO, %) |
Tsawg dua lossis sib npaug li 0.02 |
Cov txheej txheem xeem siv: mono/di-PE cov ntsiab lus los ntawm GC tom qab silylation (GB/T 9722), hydroxyl tus nqi los ntawm acetylation-alkali titration (GB/T 7383), GB/T 617 (melting range), GB/T 6283 (Karl Fischer water determination, 4 GB/T) (Color 4 GB/T}) GB / T 7531 (qhov hluav taws xob hluav taws xob).
Cim npe nrov: Pentaerythritol (pe) CAS 115-77-5, Tuam Tshoj Pentaerythritol (pe) CAS 115-77-5 manufacturers, lwm tus neeg, Hoobkas
