Lithene ultra® PM4-7.5MA is a medium viscosity, low molecular weight, liquid polybutadiene. It is very low in odour and volatiles and is produced from Lithene ultra® PM4, adducted with 7.5 parts maleic anhydride.
Adhesion promoter in automotive sealants
Rubber to metal adhesion promoter
Soft, isocyanate free electrical encapsulants
Lithene ultra® PM4-7.5MA is despatched from our UK production plant.
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® PM4-7.5MA may be formulated as part of the binder system in gap filling or sound deadening automotive sealants. The high polarity allows the product to increase adhesion of the sealant even to oily metal surfaces, while still retaining flexibility. Lithene ultra® PM4-7.5MA can be readily formulated with other non functional Lithene ultra® grades.
Phone: +44(0)1279 436211
|Total Acid||35 - 45||mg KOH/g|
|Viscosity@ 25 °C||20 - 60||dPa.s|
|Residual maleic anhydride||0.1 max||%|
|NVC (180 °C 30mins)||>99.8||%|
|Typical molecular weight||1600||Mn|
|Molecular weight distribution||Broad|
|Appearance||Dark brown viscous liquid|
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