MCT5 is a low molecular weight, solid copolymer of vinyl acetate and crotonic acid. It is an extremely versatile polymer soluble in both solvent and alkaline aqueous systems.



Rapidly dissolves in most organic solvents

Dissolves in aqueous systems at pH >7.0

Can be melt processed and plasticised


Can be combined with other M Grades

Very high adhesion to metals and plastics

High light stability


MCT5 is manufactured on a dedicated polymerisation plant and is produced in the form of clear, slightly yellow granules.

Technical Informations

Application Advice/Typical Applications

Dissolving - MCT5 is soluble in many organic solvents such as esters, ketones, aromatic hydrocarbons and lower alcohols. A more detailed list is available on the datasheet Solvent Solubility and Plasticiser Compatibility. By using water and either a fixed or fugitive alkali, an aqueous solution of MCT5 can be prepared. Solutions of solid content up to 50%, can be made by incorporating a proportion of a lower alcohol such as methanol, ethanol or isopropanol (IPA). Further information on solution preparation is available in MCT5, A Polymer for all Solutions.
Melt - MCT5 is thermoplastic and will gradually soften and flow with increasing temperature. Heat activated coatings and adhesives can also be easily formulated, which show excellent adhesion to metal surfaces.
Compatibility - MCT5 is compatible with other M Grade polymers, and can be mixed in any proportion to modify either solution or dry film properties. MCT5 can be plasticised with many types of plasticiser to modify film properties. Further details are available on request.

Solvent based adhesives, solvent based inks & lamination adhesives, heat seal adhesives, alkali removable coatings, pigment dispersion, paper impregnation for automotive filters, hot stamping foils.

Shipping and Storage

MCT5 is a thermoplastic solid. To prevent sticking of the polymer granules the product should be stored in dry conditions, below +20 °C (+68 °F) out of direct sunlight. Pallets should not be stacked. Under these conditions the product has a storage 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. MCT5 is supplied in 25kg paper sacks each marked with the grade reference and batch number. The minimum order quantity is 1000kg supplied on 2 x 500kg pallets stretch wrapped together.

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:

Synthomer Limited Head Office
Phone: +44 (0)1279 436 211
FAX: +44 (0)1279 444 025


Character Value Unit
Total Solid Content >99.0
Viscosity 20% in ETAc @ 20°C 7 - 13 mPa.s 
Acid Value 35.0 - 45.0 mg KOH/g 
Typical softening point 100 - 120
Typical molecular weight 36.000  
Tg 46 ± 2 °C 
Appearance Clear, slightly yellow granules  

Available Documents

Technical datasheet

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