POLYTETRAMETHYLENE ETHER GLYCOL (PTMEG)
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Korea PTG Co., Ltd.
South Korea
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Product Information
>> POLYTETRAMETHYLENE ETHER GLYCOL (PTMEG)
- Process : Korea PTG Co., Ltd.
- Korea PTG Co., Ltd. has newly developed the manufacturing process of polytetramethylene ether glycol(PTMEG). This process utilizes the continuous production system of the most excellent quality with high consistency. PTMEG is synthesized by the polymerization of Tetrahydrofuran(THF).
It is colorless and viscous liquid over room temperature. PTMEG is mainly used for production of polyurethane, elastomers, spandex fibers and copolyester-ether elastomers. Korea PTG has a variety of product specification with seven standard grades of molecular weights in 210, 650, 1000, 1400, 1800, 2000 and 3000.
PTMEG products with other molecular weights can be produced upon special request of customers. Please contact our sales office for specific information.
1) Chemical nomenclature α-hydor-ω-hydroxy-poly(oxy-1.4- butanediol) (According to IUPAC and CAS) Cas No. 25190-06-1 Formular HO [- CH2 CH2 CH2 CH2O -]n H 2) Synonyms Polytetramethylene ether glycol (PTMEG) Poly(oxytetramethylene) glycol Polytetramethylene oxide(PTMO) Polybutylene glycol Polytetrahydrofuran(PTHF) - Production Capacity : 30,000 MTA
-. Product Physical Properties
| PTMEG GRADE | 210 | 650 | 1000 | 1400 | 1800 | 2000 | 3000 |
| Appearance | A White waxy sold, and may become transparent liquid over a room temperature | ||||||
| Average Molecular Weight | 210 | 650 | 1000 | 1400 | 1800 | 2000 | 3000 |
| Hydroxyl Number | 534.3 | 172.6 | 112.2 | 80.1 | 62.3 | 56.1 | 37.4 |
| Viscosity (40°C, cP) | 50 | 205 | 270 | 660 | 1215 | 1225 | 1350 |
| Specific Gravity (40/4°C) | 0.991 | 0.984 | 0.981 | 0.978 | 0.976 | 0.974 | 0.97 |
| Refractive Index | 1.462 | 1.462 | 1.463 | 1.463 | 1.464 | 1.464 | 1.464 |
| Melting Point (Tm, °C) | -5 | 19 | 24 | 26 | 28 | 32 | 35 |
| Glass Transition Point (Tg) | -80 | -76 | -76 | -76 | -76 | -76 | |
| Flash Point (open cup) | More than 260 | ||||||
| Alkalinity (mIN/1000HCL/30g) | From -3.0 to +1.0 | ||||||
| Iron (wt,ppm) | Less than 1 | ||||||
| Solubility | Readily soluble in alcohols, esters and ketones, aromatic and chlorinated hydrocarbons, Insoluble in aliphatic hydrocarbons and water, Has a tendency to decrease its solubility as molecular weight increases. | ||||||
| Hygroscopicity | There PTMEG are all hygroscopic at room temperature. PTMEG can abosrb to 2 wt, % water depending on the molecular weight. | ||||||
-. Product Specifications
| Product | PTMEG 210 |
PTMEG 650 |
PTMEG 1000 |
PTMEG 1400 |
PTMEG 1800 |
PTMEG 2000 |
PTMEG 3000 |
| Molecular Weight | 210±25 | 650±25 | 1000±25 | 1400±25 | 1800±25 | 2000±25 | 3000±25 |
| Hydroxyl Number(mgKOH/g) | 477.4 ~ 606.5 |
166.2 ~ 179.5 |
106.9 ~ 118.1 |
77.4 ~ 83.1 |
60.6 |
54.7 ~ 57.5 |
36.2 ~ 38.7 |
| Color (APHA) | 40 max. | ||||||
| Acid Number (mgKOH/g) | 0.05 max. | ||||||
| Water (wt.ppm) | 250 max. | 200 max. | 200 max. | 200 max. | 150 max. | 200 max. | 200 max. |
| Peroxide (wt.ppm as H2O2 |
2 max. | ||||||
| Volatiles (wt.ppm) | 0.1 max. | ||||||
| Stabilizer (wt.ppm as BHT) | 220±50 | ||||||
| Metal (wt.ppm as Fe) | 1 max. | ||||||
| CAS No. | 25190-05-01 | ||||||
-. Uses
PTMEG belongs to the class of polyether polyols which have excellent reactivity. It is
used to make a high quality of poplyurethane including spandex and copolyester-ether in
such applications as:
Polyol for polyurethane
| USES | APPLICATIONS |
| Polyurethane Fibers (Spandex) | Swimwear, Underwear, Stockings, etc |
| Polyurethane Elastomers | Wheels, Rollers, Hoses, Tubes, Cable, Automotive parts, etc. |
| Synthetic Leathers | Shoes, Bags, etc. |
| Paint, Coating Agent | Water resistant coatings, etc. |
| Adhesives, Sealants | Adhesives for industry and building |
Polyol for polyester & polyamide
| USES | APPLICATIONS |
| Polyester Elastomers | Automotive parts, Cables, Hoses, Tubes, etc. |
| Polyamide Elastomers | OA parts, Ski boots, Roller skates, Belts, etc. |
B2B Trade
| Price (FOB) | Negotiable | transportation | - |
|---|---|---|---|
| MOQ | Negotiable | Leadtime | Negotiable |
| Payment Options | Negotiable | Shipping time | Negotiable |
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- Won-sik, Lim
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- 489-3 Yongyeon-dong, Nam-gu, Ulsan
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