Kayabrid is our latest innovation providing highly efficient coupling betweenthe polymer matrix and fillers or polar polymers, while delivering excellent mechanical properties.

The unique combination of high molecular weight, high grafted maleic anhydride and a low content of free maleic anhydride offers you many benefits including:

  • Substantial improvement of mechanical properties
  • Significant lower dosage levels than other coupling agents
  • Lower VOCs emissions 


Molecular weight

Grafted MAH

Free MAH


> 50 000


very low

Commercial products (i.e., A and B)

> 50 000

< 0.5%


Commercial products (i.e., C and D)

< 50 000

> 0.5%



Kayabrid can be used as coupling agent between polypropylene (ma-g-pp) and polar fillers such as glass, wood, mica, talc, natural fiber, carbon fiber, paper, or polar polymers such as polylactic acid or polyamides.

The main applications of Kayabrid are: Glass Fiber Reinforced Polypropylene (GFRPP), Wood-Plastic Composites (WPC) and high-loaded Halogen Free Flame Retardant (HFFR) cables.


The graph below shows the efficiency of Kayabrid compared to conventional coupling agents.

The performance is confirmed by many customers reporting:

  • 40-50% higher Izod impact strength
  • 50-80% reduction in amount of compatibilizer