Synthesis and thermal properties of rosinamideimide modified with poly (3,5-difluorophenylphenylsiloxane)

摘要

Recently, rosin obtained from pine trees has received considerable attentiondue to various range of application, such as adhesive, print ink and thin coating material for surface protection and also developed as intermnediate of functional polymer [1,2]. Rosin has many isomers due to the characteritics of its structures, such as abictic acid, meoabietic acid and levopimaric acid. The most reactive isomer in rosin is levopimaric acid. So rosin maleic anhydride adduct (RMA) is easily prepared by the Diels-Alder reactionof levopimaric acid with maleic anhydride. And also, it is well known that silicone containing fluorine has excellent thermal stability, electrical property and low surface energy compared with polydimethylsiloxane. And polyamideimide is considered as engineering plastic because of its excellent thermal and electrical property. Therefore, in this study, rosinamideimide modified with poly (3,5-difluorophenylphenylsiloxane) (RAIFS) was prepared by imidization of rosinbisamide and #alpha#, #omega#-aminopropyl terminated poly (3.5-difluorophenylphenylsiloxane) prepolymer (AFPS), which can be used as thin coating material for surface protection.