Lithene ultra® N4-5000-15MA is a highly viscous, low molecular weight, liquid polybutadiene. It is very low in odour and volatiles and is based on a narrow molecular weight polybutadiene adducted with 15 parts maleic anhydride.




Soft, isocyanate free electrical encapsulants

Adhesion promoter in automotive sealants

Rubber to metal adhesion promoter

Impact modifier for polyester resins


Lithene ultra® N4-5000-15MA is despatched from our UK production plant.

Available Documents

TDS Download

Technical Informations

Application Advice/Typical Applications

Handling - Lithene ultra® N4-5000-15MA is a highly viscous, liquid polymer. It will flow at ambient temperatures but viscosity will decrease with increasing temperature allowing easier pumping and mixing.

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.

Applications - Lithene ultra® N4-5000-15MA when formulated with an appropriate amine cross-linker and coreactant such as a reactive polyol, can form the basis of a soft, isocyanate free electrical encapsulant. The resultant gel has excellent electrical resistance and remains flexible across a very wide temperature range. Lithene ultra® N4-5000-15MA may be added to rubber compounds either directly or mixed with filler, to improve adhesion between rubber and reinforcements. It is possible to make an aqueous alkaline solution from the product, further details are available on request.

Shipping and Storage

 Lithene ultra® N4-5000-15MA 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 and hydrolysis. Further information is available on the datasheet Storage of Lithene Liquid Polybutadienes.

Lithene ultra® N4-5000-15MA is packed in open top 200 litre steel drums containing 188kg and is typically made to order. The minimum order quantity is one pallet (four drums).

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
Total Acid 70 - 78 mg KOH/g 
Viscosity@ 25 °C 1200 - 2200 dPa.s 
Residual maleic 0.05 max
NVC (180 °C 30mins) >99.8
Typical molecular weight 5750 Mn 
Molecular weight distribution Narrow  
Appearance Golden viscous liquid  

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