Lithene ultra® AL-15MA is a highly viscous, low molecular weight, liquid polybutadiene. It is produced from the low odour base Lithene ultra® AL, adducted with 15 parts maleic anhydride. It is used as a highly efficient adhesion promoter in sulphur cured automotive sealants.




Adhesion promoter in automotive sealants and semi structural adhesives

Rubber to metal adhesion promoter

Electrical encapsulants


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

Technical Informations

Application Advice/Typical Applications

Handling - Lithene ultra® AL-15MA is a highly viscous, liquid polymer. The viscosity of the product will decrease with increased temperature and the product will normally required 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.

Applications ; Lithene ultra® AL-15MA may be formulated as part of the binder system in a structural or sound deadening automotive sealant. The high polarity allows the product to significantly increase adhesion of the sealant especially direct to oily metal surfaces. The high vinyl 1,2 content polymer structure cures efficiently in accelerated sulphur systems and contributes to the adhesive strength of the sealant. It can be readily used in combination with non functional Lithene ultra® grades such as PM4, AL and AH.

Shipping and Storage

Lithene ultra® AL-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® AL-15MA is packed in open top 200litre 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 68 - 80 mg KOH/g 
Viscosity@ 25 °C 1500 - 6000 dPa.s 
Residual maleic anhydride 0.1 max
Non volatile content >95.0
Typical molecular weight 1000 Mn 
Molecular weight distribution Broad  
Appearance Dark brown viscous liquid  

Available Documents

Technical datasheet

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