Bona Materials supplies CTBN, a carboxyl-terminated polybutadiene acrylonitrile liquid rubber, CAS RN 68891-46-3. CTBN is a flowable oligomer with reactive carboxyl groups for chain extension or crosslinking. It is used as a toughening modifier for epoxy, phenolic, unsaturated polyester and photosensitive resins, supporting impact strength, peel strength, oil resistance and crack resistance. Applications include bonding, sealing, spraying, potting and coating in aerospace, electronics, automotive, rail, shipbuilding and petrochemical fields. CTBN-08 and CTBN-13 are listed.
