Lithene ultra® PH is a viscous, low molecular weight, liquid polybutadiene with a high content of 1,2 vinyl microstructure. It has extremely low odour and volatiles and is used in EPDM rubbers as a coagent and formulation of hard electrical encapsulants.




Coagent in EPDM rubber compounds

Hard electrical encapsulants

Antifoaming coating additive

Reactive plasticiser in UV cure flexographic printing plates


Lithene ultra® PH is despatched from our UK production plant.

Technical Informations

Application Advice/Typical Applications

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

Compatibility - Liquid polybutadienes are generally compatible with many hydrocarbon solvents and plasticisers. Lithene ultra® PH is very hydrophobic and has limited compatibility with alcohols, ketones and esters. Further details are available on request.

With a high content of 1,2 vinyl microstructure, Lithene ultra® PH can be used as a coagent in peroxide cured EPDM rubber compounds, increasing modulus and compression set.

Lithene ultra® PH can be combined with a high temperature peroxide and aromatic monomer to form a hard insulating resin for protecting electrical and electronic systems.

In flexographic print plates Lithene® ultra PH can act as a reactive plasticiser with good compatibility with solid rubbers and high reactivity during UV exposure.

Further application and formulation advice is available on request.

Shipping and Storage

Lithene ultra® PH 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® PH is packed in bung top 200litre steel drums containing 175kg. The minimum order quantity is one pallet (four drums). 900kg IBCs or bulk deliveries 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 35 - 50
Viscosity, @ 25°C 65 - 90 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 

Available Documents

Technical datasheet

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