pour-point depressant

[′pȯr ‚pȯint di‚pres·ənt]

(materials)

An additive that lowers the pour point of a wax-containing petroleum-base lubricating oil by reducing the tendency of the wax to solidify. Also known as pour depressant; pour-point inhibitor.

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References in periodicals archive ?

A pour-point depressant (PPD) has also been added to the formulation, simplifying logistics for Afton customers.

Afton unveils new car motor oil additive

Viscosity index improver (VII) [1, 2], pour-point depressants (PPD) [3, 4], anti-wear (AW) [5, 6], antioxidant [7], detergent-dispersant [8], emulsifiers, demulsifiers etc.

Multifunctional Greener Additives for Lubricating Oil

In order to improve viscosity index over longer period of use certain additive such as Dispersants, anti-wear agents, friction modifiers, pour-point depressants, antioxidants and foam inhibitors are used in engine oil.