- Chemical Name:1,3-Isobenzofurandione, polymer with 2,2'-oxybis[ethanol]
- Functions:Surfactant, Anti-Wear Agent, Extreme Pressure Additive
- Chemical Family:Polyols (Polyester), Polyols, Anhydrides
- Hydroxyl Value:56.0 - 56.0 mg KOH/g
STEPAN® MWA-570 HS is a diethylene glycol-phthalic anhydride-based modified polyester polyol that exhibits hydrolysis resistance and good thermal stability. It exhibits a good hardness/flexibility balance, clarity, and low color. It is used in metalworking formulations for improved lubrication properties and is a great option as a chlorinated paraffin replacement, either alone or with the addition of phosphate esters. It also shows improved lubrication by showing a reduced average scar when compared to the current industry standard.