Polypropylene Glycol
Polypropylene Glycol (PPG) is a linear polymer produced by controlled, catalyzed reaction between propylene oxide and water. It is a clear, viscous liquid at room temperature. PPG is soluble in all proportions with any organic solids and liquids, the main exception being long chain aliphatic hydrocarbons. It possesses excellent lubricity and has a low vapour pressure. Under extreme heating conditions it does not form coke nor does it form a varnish. Decomposition products are low boiling products that are either lost as volatiles or soluble in the polypropylene glycol.
Technical Properties
Cas Number: 025322-69-4
Flash point: 150°C
Viscosity (@ 25 °C): 320 cSt
Viscosity (@ 100 °C): 24 cSt
Specific Gravity (@ 25°C): 1.002 g/cm3
Pour point: -31°C
Applications
Polypropylene Glycol is suitable as an antifoam agent in latex formulations, paper and pulp processing, emulsion paints, sugar beet processing, fermentation vats in the manufacture of various products. Other applications include its use as a cosmetic ingredient, a mould release agent, an intermediate for e.g. resin and as plasticizer. PPG can also be used as lubricant base; its intrinsic lubricity may be further enhanced by the use of additives.