New carboxyl terminated nitrile liquid rubber at both ends of the main chain of CTBN molecule. Carboxyl groups have high activity and can undergo chain extension or cross-linking reactions; The introduction of acrylonitrile into the main chain of molecules has oil and high temperature resistance properties, serving as an adhesive to polar interfaces and improving the blending, oil resistance, and cracking resistance properties with thermosetting structural resins.

Application: It is a toughening modifier for structural resins such as epoxy, phenolic, and unsaturated polyester, which can improve the impact strength and peel strength of the resin. CTBN is widely used as an adhesive, sealing, spraying, potting, coating, and toughening agent for carbon fiber composite epoxy prepreg in fields such as aerospace, weapons and ships, electronics and electronics, automotive and high-speed rail, and petrochemicals.