Lithene ultra® N4-B-10MA is a viscous, low molecular weight, liquid polybutadiene. The polymer is very low in odour and volatiles and is produced from a broad molecular weight polybutadiene base, adducted with 10 parts maleic anhydride.




Adhesion promoter in automotive sealants

Soft, isocyanate free electrical encapsulants

Rubber to metal bonding

Formulation of slow release fragrance gels


Lithene ultra® N4-B-10MA is despatched from our UK production plant.

Technical Informations

Application Advice/Typical Applications

Handling - Lithene ultra® N4-B-10MA is a viscous, liquid polymer. The viscosity of the product will decrease rapidly with increased temperature and the product will normally require gentle heating to improve flow and handling. 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-B-10MA when formulated with an appropriate amine cross-linker or reactive polyol, can form the basis of an isocyanate free soft gel encapsulant. The resultant gel has excellent electrical resistance. The same principle can be used to formulate gels for controlled release of oil based fragrances. Lithene ultra® N4-B-10MA has a very low volatile content so is ideally suited for use as an adhesion promoter in direct to metal automotive sealants. It has also been seen to improve tensile and impact properties of polyester resins once the resin has cured.

Shipping and Storage

Lithene ultra® N4-B-10MA 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-B-10MA is packed in open top 200 litre steel drums containing 188kg. 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 49 - 59 mg KOH/g 
Viscosity@ 25 °C 600 - 900 dPa.s 
Residual maleic anhydride 0.05 max
Non volatile content >99.8
Typical molecular weight 8200 Mn 
Molecular weight distribution Broad  
Appearance Golden viscous liquid  

Available Documents

Technical datasheet

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