Gerhard Karall Engineering 

specialized in trans-polynorbornen


Norsorex® masterbatches and compounds

GKE offers countless options to develop solutions with the Norsorex® polymer.

Standard masterbatches: in phr

Standard grade

NSX 100 RAE

NSX 100 TDAE

NSX 100 HNA

NSX 100 PA

Norsorex polymer

100

100

100

100

Refined aromatic extract

100




Treated destillated aromatic extract


100



High naphtenic process oil



100


Paraffinic process oil




100


Standard grade

NSX 150 RAE

NSX 150 TDAE

NSX 150 HNA

NSX 150 PA

Norsorex polymer

100

100

100

100

Refined aromatic extract

150




Treated destillated aromatic extract


150



High naphtenic process oil



150


Paraffinic process oil




150


Masterbatches with LSR:

·       Our most outstanding and patented capability is the saturation of carbon double-bonds by adding silicon end-groups.

·       This technology improves the resistance against chemicals, ozone and UV rays.

·       The usage temperature of trans-polynorbornen based compounds changes from 70°C to 110°C and more, so                     applications for the automotive industry can be realized.

·       This change in properties  goes hand in hand with significantly better aging performance and reduced inflame-ability.


PNB based Compounds

·       Toy tire compounds with 35 and 45 Shore A

·       Race car tire compounds with very high grip

·       Mountain-bike tire compound

·       AV-Glove compounds with 15 Shore A and a loss factor tan ɗ of 1,6 at 10 Hz

·       Rail pad compounds with 75 and 90 Shore A and loss factor tan ɗ of 1,0 at 80 Hz

·       Over 200 customized compounds for various applications