MPG and DPG are produced in a two-step process. The first step is the reaction of propylene oxide with water into a mixture of MPG and DPG and the second step is the distillation and purification of the mixture into its two separate components.
MPG is the largest volume propylene glycol. It is a colourless, viscous, odourless liquid. It is highly hygroscopic and miscible in all ratios with water, alcohols, esters, ketones and amines. It has limited miscibility with halogenated hydrocarbons and is not miscible with aliphatic hydrocarbons.
MPG's most important end use is in the production of unsaturated polyester resins which, in turn, are used to make everyday items such as bath tubs, small boats and water/chemical tanks and pipes.
Other end use application areas are paints and coatings, aeroplane de-icers/anti-icers, antifreeze and industrial coolants, detergents, hydraulic fluids and cosmetics.
We also supply United States Pharmacopia (USP) grade MPG that meets strict product quality and handling standards for applications such as pharmaceuticals, cosmetics and foodstuffs.
DPG is also a colourless, hygroscopic liquid, miscible with water in any ratio and highly soluble in most organic solvents.
The end uses of DPG include unsaturated polyester resins, plasticisers, alkyd resins, cosmetics and urethane polyols.
What are our key strengths in the propylene glycol sector?
- Well-established presence across the globe through a strong supply network
- Strong, integrated position in Asia Pacific
- Strong product stewardship commitment