Table of Contents
1.What is the pour point depressant（PPD）?
PPD is an additive used in lubricants and fuels to lower the pour point temperature of the fluid. The pour point is the lowest temperature at which the fluid remains free-flowing and can be poured or pumped. Below the pour point, the fluid becomes too viscous and may solidify, causing difficulties in handling and fluid circulation.
The primary purpose of a PPD is to improve the low-temperature performance of lubricants and fuels, especially in cold climates or during winter conditions. By reducing the pour point, the fluid remains fluidic and pumpable at lower temperatures, ensuring smooth operations in equipment and vehicles.
PPD typically work by interacting with the waxy or solid components in the fluid, such as paraffin waxes in base oils. These additives modify the crystal structure and inhibit the formation of large, interconnected wax crystals. As a result, the fluid retains its fluidity at lower temperatures, and its pour point is effectively lowered.
2. some common types of compounds used as PPD include:
①Polymethacrylates:
Polymethacrylates are a common class of pour point depressants used in lubricants. They are typically copolymers or terpolymers of methacrylate monomers and are effective at lowering the pour point of lubricating oils.
②Ethylene Co-Vinyl Acetate (EVA):
EVA copolymers are used as pour point depressants in some lubricants. These copolymers consist of ethylene and vinyl acetate units, and they exhibit excellent low-temperature properties.
③Alkylated Naphthalenes:
Alkylated naphthalenes are aromatic compounds that function as pour point depressants. They interact with wax crystals in the lubricant to prevent them from forming a solid network, thereby reducing the pour point.
④Olefin Copolymers:
Certain olefin copolymers, such as ethylene-propylene copolymers, can also act as pour point depressants in lubricants.
⑤Styrene-Butadiene Copolymers:
Styrene-butadiene copolymers are used as pour point depressants in some lubricating oils due to their ability to inhibit the formation of wax crystals.
⑥Polyalkylmethacrylates:
These are polymers derived from alkyl methacrylate monomers and are used as effective pour point depressants in various lubricant formulations.
⑦Methacrylate Esters:
Some methacrylate esters, such as isobutyl methacrylate, are employed as pour point depressants in certain lubricants.
3.What do we need to notice about it ？
It’s important to note that while PPD are effective in reducing the pour point of lubricants, they may have varying effects on other properties, such as viscosity and shear stability. As a result, manufacturers carefully balance the composition of PPD with other additives to ensure that the overall lubricant performance meets the specific requirements of the intended application. The appropriate dosage and selection of the pour point depressant depend on factors such as the base oil used, the operating temperature range, and the equipment’s design and requirements.
4.Welcome to contact us
Shanghai Minglan Chemical Co.,Ltd. is a professional manufacturer and supplier of lubricant additives.We have committed to supply the professional,perfect, effective and satisfactory lubrication solutions all the time. Our lubricant additive packages meet the specification requirement of bunch test,and possess excellent product performance and reliable quality,so that always holds technology leading status in the lubrication industry.We are specialized in supplying high-quality lubricant additive products with nearly 20 years of experience. Such as detergent、ashless dispersant、ZDDP、EP antiwear additive、antiodant、viscosity index improver、rust inhibitor、Pour Point Depressant、engine oil additive package、gear oil additive package、hydraulic oil additive package and so on.
If you are interested in the pour point depressant, I recommend reaching out to us,we can provide more detailed information about our product offerings and may assist in selecting the most suitable PPD additive for your lubricant application.
