10 Things to Consider When Buying pour point depressant for diesel oil

Linear paraffins can form needle- or plate-like crystals which can agglomerate and create a three dimensional network solidifying the fuel. Pour Point Depressants act as a wax crystal modifier. Modification is achieved by nucleation, co-crystallization and anti-agglomeration, which results in reduction of the size and shape of wax crystals. Wax-crystals are not inhibited but modified in a way that they do not precipitate.

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In general PPDs consist of:

• Linear alkyl chains which can co-crystallize with the long chain paraffins in the oil
• A polar component which retards further wax crystal growth
• Very large polymer molecules which inhibit the formation of large wax crystals

The performance of a Pour Point Depressant does not only depend on the concentration and distribution of linear n-paraffins, but is also influenced by Asphaltenes and other components.

Clariant’s DODIFLOW™ micro-dispersions as well as the liquid DODIFLOW™s feature excellent temperature handling characteristics for terminal applications, cold regions or EX-protected zones. DODIFLOW™ additives also reduce the need to use expensive cutter stocks.

Most Pour Point Depressants are solid or waxy at room temperature and have to be warmed up before used. The time effort and complexity to use a PPD increases. It is difficult to use heatable systems in special areas, like EX-zones or on board. Fluid PPDs at ambient temperature can solve the problem. The table below shows an example of such a highly effective PPD in the DODIFLOW™ range, which will not be solid before -6 °C and remains pumpable down to this temperature region. Other system you can get on request.

To ensure that our customers are obtaining the most benefit from the additive, our service team offers a comprehensive analysis and characterization of the oil / oil blends. These include - but are not limited to - S.A.R.A., yield stress, rheological measurements etc. Based on the data received from these analyses, Clariant will select and recommend the best performing PPD for your needs.

If you want to learn more, please visit our website pour point depressant for diesel oil(pt,ja,sr).

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The pour point of an oil is the lowest temperature at which an oil is observed to flow by gravity in a specified lab test. Specifically, the pour point is 3 degrees C (5 degrees F) above the temperature at which the oil shows no movement when a lab sample container is held horizontally for 5 seconds. 

The pour point is an indication of an oil’s cold-temperature properties. However, it may not relate to the lowest temperature that the oil will flow to the bearings in a piece of equipment, the lowest operating temperature for a hydraulic oil or the lowest temperature at which gears receive adequate lubrication. 

Never select a lubricant product based on its pour point alone.  The cloud point is approximately the low temperature at which the oil turns cloudy due to the solidification of wax crystals within the oil.  The pour point of an oil is covered by ASTM D97 and D-03.  Several methods are used to determine the cloud point including ASTM D-10.

Pour Point Depressant Additives

Pour point depressants are polymers that allow oil and lubricants to flow at very low wintertime temperatures without heavy wax formation at these cold temperatures and enable the oil to remain pumpable (flowable). They are typically used in paraffinic base oils in applications where extreme low machine startup temperature conditions are possible. Most paraffinic motor oils employ the use of pour point depressants.

How Pour Point Depressants Work

Modifies the interface between the crystallized wax and the oil

Compounds Used in Pour Point Depressants

Alkylated wax naphthalene, polymethacrylates, alkylated wax phenol

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