Lithene ultra® P4-25P is a viscous, low molecular weight, liquid polybutadiene with a medium content of 1,2 vinyl microstructure. It is extremely low in both odour and volatiles and can be used as a reactive plasticiser in flexographic printing plates.




Reactive plasticiser in flexographic printing plates

Mould release additive for polyurethane foams

Antifoaming coating additives


Lithene ultra® P4-25P is despatched from our UK production plant.

Available Documents

TDS Download

Technical Informations

Application Advice/Typical Applications

Handling - Lithene ultra® P4-25P is a viscous, liquid polymer. The viscosity of the product will decrease rapidly with increased temperature and the product may be warmed to allow easier processing.

Compatibility - Liquid polybutadienes are generally compatible with most aliphatic and aromatic hydrocarbon solvents. They have limited solubility in alcohols, ketones and esters. Further details are available on request.

Lithene ultra® P4-25P has excellent compatibility with solid rubbers in UV cured flexographic printing plates and acts an a reactive plasticiser.

Incompatiblity with many polar systems makes it suitable for use in the formulation of specialised mould release coatings for closed cell polyurethane foams and as an antifoaming additive for certain solvent based coatings.

Further applications advice is available on request.

Shipping and Storage

Lithene ultra® P4-25P should be stored in cool, dry conditions below +30°C (+86°F). If stored in the original sealed packaging the product has a shelf life of at least 12 months from date of delivery. Product which has been stored for longer than 12 months should be tested before use. Containers which have been opened should be purged with dry nitrogen before resealing to protect the remaining product from oxidative skinning. Further information is available on the datasheet Storage of Lithene Liquid Polybutadienes.

Lithene ultra®P4-25P is packed in bung top 200litre steel drums containing 175kg. The minimum order quantity is one pallet (four drums). 900kg IBCs are also available.

Product Security/Health and Safety

Before handling, please read the Safety Data Sheet of this product for advice on safety, use and disposal.

Effluents and Pollution Control

Before handling, please read the Safety Data Sheet of this product for advice on safety, use and disposal.

For further information regarding this product please refer to:

McInnes, Malcolm
Phone: +44(0)1279 436211


Character Value Unit
Vinyl 1,2 15 - 25
Viscosity, @ 25°C 20 - 30 dPa.s 
Non volatile content >99.8
Typical molecular weight 2600 Mn 
Molecular weight distribution Broad  
Appearance Colourless to pale yellow liquid  
Colour 200 max Hazen 

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