What grades of PTMEG are offered by Gantrade Corporation?

Gantrade offers the following grades of PTMEG diols:

  • PTMEG 650
  • PTMEG 1000
  • PTMEG 1400
  • PTMEG 1800
  • PTMEG 2000
  • PTMEG 3000
In the future, Gantrade/DCC will offer a PTMEG 250 grade. The grade designations refer to the average molecular weights of the PTMEG diols.

What are the packaging options for these grades?

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.

What is Gantrade's value proposition for PTMEG?

Gantrade’s partner for PTMEG is Dairen Chemical Corporation (DCC). DCC is the largest global producer of PTMEG with six individual production facilities. DCC is back integrated to propylene as the feedstock and 1,4-butanediol. Gantrade maintains strong drum inventories of PTMEG in the USA and Europe at multiple warehouse locations, which includes drums and 20 MT ISO Tanks. We offer value in pricing, delivery, service, which includes technical service, and knowledge sharing. Our PTMEG polyols meet the highest quality standards.

What is the shelf life of PTMEG Polyols?

The shelf life of PTMEG is 2 years when stored in the unopened, original containers and kept at ~ 20ºC. PTMEG is slightly hygroscopic. When opened to the atmosphere, PTMEG will absorb moisture.

What is the physical form of the various PTMEG grades?

PTMEG 650 has a softening point of 11°C (52°F) and can be a liquid at room temperature. PTMEG 1000, and the higher molecular weight grades are low-melting waxy white solids, with softening points starting at about 24°C (75°F). They must be heated to liquefy and discharge from drums or ISO Tanks. It is important 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.

What are the key distinguishing attributes of PTMEG based polyurethane elastomers?

  • Outstanding hydrolytic stability (high temperature and humidity)
  • Flexibility at low temperatures
  • Excellent dynamic properties and high resiliency
  • Good abrasion resistance, especially to impingement abrasion
  • Good tear strength
  • Low viscosities

What is the FDA compliance status of the PTMEG polyols?

PTMEG diols are listed as a-hydro-w-hydroxypoly-(oxytetramethylene), in the Code of the Federal Register. PTMEG polyols are acceptable indirect food additives and intermediates in the following regulation standards:

  • 21 CFR 175.105 Adhesives
  • 21 CFR 177.1590 Polyester Elastomers
  • 21 CFR 177.1630 Polyethylene Phthalate Polymers
  • 21 CFR 177.1680 Polyurethane Resins
  • 21 CFR 177.2600 Rubber articles intended for repeated use

Gantrade Corporation can provide an official FDA compliance letter upon request.

What are the handling requirements for PTMEG?

PTMEG polyols are non-hazardous, stable products with a low order of toxicity. 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 201-573-1955. Always prevent electrostatic discharge and ensure adequate ventilation in the work and storage areas.