Lithene ultra® N4-5000 is a medium viscosity, narrow molecular weight, liquid polybutadiene with a low content of 1,2 vinyl micro structure. It is extremely low in both odour and volatiles and it can be used as a component in PU mould release formulations or as a base for further chemical modification such as maleinisation.




Polyurethane foam mould release additive

Dry sand binder

Base polymer for maleinisation


Lithene ultra® N4-5000 is despatched from our UK production plant.

Available Documents

TDS Download

Technical Informations

Application Advice/Typical Applications

Handling - Lithene ultra® N4-5000 is a medium viscosity 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® N4-5000 can be oxidatively dried by heating thin films at 160 - 200 °C or by addition of metallic driers, to give hydrophobic coatings with good adhesion. Combination with metallic driers also allows the product to act as a binder for dry sand. Lithene ultra® N4-5000 can be incompatible with many polar systems making it suitable for use in the formulation of mould release coatings for polyurethanes. A narrow molecular weight distribution makes Lithene ultra® N4-5000 very suitable for further chemical modification with for example, maleic anhydride, with the resultant compounds having a wide range of further reactivities and applications. Further application and formulation advice is available on request.

Shipping and Storage

Lithene ultra® N4-5000 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® N4-5000 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 10 - 20
Viscosity, @ 25 °C 30 - 50 dPa.s 
Non volatile content >99.8
Typical molecular weight 5000 Mn 
Molecular weight distribution Narrow  
Appearance Colourless to pale yellow liquid  
Colour 200 max Hazen 

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