Polytetramethylene Ether Glycol (PTMEG) is the premier polyether polyol used worldwide in the manufacture of high-performance polyurethane elastomers. Known for its many performance attributes and advantages, PTMEG is used in a variety of applications, including polyurethane resins, prepolymers, coatings, adhesives, cast polyurethane resins, spandex fibers, and more.
|PTMEG 210||PTMEG 650||PTMEG 1000||PTMEG 1400||PTMEG 1800||PTMEG 2000||PTMEG 3000|
+ Recommend, ++ Highly Recommend, Blank Can Be Used
Gantrade Corporation is a leading supplier of PTMEG, meeting needs for high performance polyurethane products worldwide.
PTMEG Attributes in Polyurethane Elastomers
Processors know PTMEG as a high-performance polyol capable of formulating polyurethane elastomers in several positive directions, whether it’s flexibility, dynamic properties, hydrolytic stability, or abrasion resistance.
PTMEG-based polyurethanes exhibit the following attributes:
- Superior resistance to hydrolytic cleavage
- Excellent flexibility and property retention at low temperatures
- High resiliency and rebound properties
- Excellent mechanical and dynamic properties, as well as low hysteresis
- Outstanding impingement abrasion resistance
- Good processing characteristics
Gantrade offers a robust selection of PTMEG polyols available in a broad range of molecular weights. While the workhorse grades of PTMEG are the 1000, 1800 and 2000 MW diols, the PTMEG 210 and 650 grades are notable, as formulators find them easier to handle liquids at room temperature and exhibit lower viscosities. PTMEG 3000 is a grade of interest when seeking enhanced resiliency and rebound, as well as abrasion properties.
|Grade||Hydroxyl Number, OH (mg KOH/g)||Molecular Weight||Color, APHA||Acid Number (mg KOH/g)||Water (%)||Melting Point (°C)||
Flash Point, OC (°C)
Density (g/cm3) at 40°C
Viscosity (mPa•s at 40°C)
|210||477-606||185-235||Max. 40||Max. 0.05||Max. 0.030||-5||Min. 160||0.98||30-50|
|650||166-180||625-675||Max. 40||Max. 0.05||Max. 0.020||11||Min. 230||0.978||160|
|1000||107-117||959-1049||Max. 50||Max. 0.05||Max. 0.015||24||Min. 260||0.977||268|
|1400||77-84||1336-1457||Max. 50||Max. 0.05||Max. 0.015||27||Min. 260||0.976||400|
|1800||60-65||1726-1870||Max. 50||Max. 0.05||Max. 0.015||27||Min. 260||0.975||1070|
|2000||53-59||1901-2117||Max. 50||Max. 0.05||Max. 0.015||27||Min. 260||0.974||1270|
|3000||35-39||2877-3206||Max. 50||Max. 0.05||Max. 0.015||30||Min. 260||0.974||3108|
Physical Forms of PTMEG Grades
The different grades of PTMEG available come in a variety of physical forms, which in turn affect processing. PTMEG 650, for example, has a softening point of 11°C (52°F) and can be a liquid at room temperature. PTMEG 1000, along with the other offerings in higher molecular weight grades, appears in the form of low-melting waxy white solids, with softening points starting at about 24°C (75°F). Processors must heat higher molecular weight grades in order to liquefy and discharge them from drums or ISO Tanks.
It’s important to note that drums are rolled when re-melted to avoid segregation of the various molecular weight fractions that make up PTMEG. Gantrade can supply the viscosity temperature profiles for each of the grades of PTMEG diols.
Viscosity and Temperature
The chart below shows the relationship between the viscosity of various grades of PTMEG and the temperature.
The following chart compares the hydrolysis resistance of a PTMEG 2000/MDI/BDO based elastomer vs. polyester systems based on 1,6-hexanediol adipate and 1,4- butanediol adipates under extreme conditions of superheated steam.
Available Grades of PTMEG (by Molecular Weight)
Gantrade offers the following grades of PTMEG diols*:
- PTMEG 210
- PTMEG 650
- PTMEG 1000
- PTMEG 1400
- PTMEG 1800
- PTMEG 2000
- PTMEG 3000
*The grade designations refer to the average molecular weights of the PTMEG diols.
Gantrade supplies PTMEG in 200 kg (441 lb.) factory sealed iron drums and 20 MT (44,080 lb.) bulk heated ISO tanks. The minimum order size is one drum. Sample sizes are 1 kg and 20 kg containers.
Safety and Handling
PTMEG polyols are non-hazardous, stable products with a low order of toxicity. PTMEG is stable under proper storage and handling conditions and possesses a high flashpoint. Always prevent electrostatic discharge and ensure adequate ventilation in the work and storage areas.
Gantrade Corporation encourages its customers to have a comprehensive understanding of the health, safety, environmental and regulatory information on its products before handling and disposal. To obtain a Safety Data Sheet (SDS) and other handling information, please contact us using the contact form on www.gantrade.com or call 201-597-5566.
Gantrade: Your Partner for High-Performance Polyurethane Polyols
To explore which PTMEG polyol is best suited for your unique needs, partner with Gantrade. Our team, armed with a wealth of technical knowledge and expertise, can guide you to the best solutions for your applications. Contact Gantrade today to get started. We offer a wide portfolio of products to achieve your high-performance polyurethane requirements.