1,3-Propanediol, also propane-1,3-diol or trimethylene glycol, is
a three-carbon diol.
- It is a
clear colorless viscous liquid that is miscible with water and
1,3-Propanediol can be formulated into a variety of industrial
products including composites, adhesives, laminates, coatings,
moldings, novel aliphatic polyesters, copolyesters, solvents,
antifreeze and other end uses.
1,3-Propanediol does not appear to pose a significant hazard via
inhalation of either the vapor or a vapor/aerosol mixture.
is a non-flammable, low toxicity liquid that is colorless and
odourless. It is hygroscopic and is completely soluble in water.
- The PU hot
melt adhesives (PUHMAs) were prepared from 1,3-propanediol based
adipate polyester polyol with different molecular weights and a
MDI-based quasi-prepolymer using 1,3-PDO as chain extender.
is miscible in all proportions with low molecular weight aliphatic
alcohols and ketones.
- It is
slightly soluble in aromatic hydrocarbon solvents and has very low
miscibility with aliphatic hydrocarbon solvents.
demonstrates the characteristics of an alcohol and can be directly
utilized into performance products such as heavy-duty coolants or
heat transfer fluids.
also functions as a chemical intermediate in urethane-based
polymer systems, either as a chain extender or an adipate
Additionally, it can be formulated into coatings and unsaturated
polyester resins, process solvents, and specialty application
is widely used in the production of the polymer polytrimethylene
Propanediol has not been approved for use in the manufacture or
preparation of food, drugs, or cosmetics.
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