Abstract: Provided are an asymmetric bis(vinylbenzyl) fluorene (9-(2-vinylbenzyl)-9?-(4-vinylbenzyl)-9H-fluorene, o,p-BVBF), and a thermosetting hydrocarbon resin, preparation methods, and use thereof, as well as a thermosetting hydrocarbon resin of the o,p-BVBF and a symmetric bis(vinylbenzyl) fluorene (9,9?-bis(4-vinylbenzyl)-9H-fluorene, p,p-BVBF), and a thermosetting cross-linked resin of the o,p-BVBF and/or the p,p-BVBF as cross-linking agent(s) and alkenyl-terminated polyphenylene ether, and preparation methods and use thereof.

Abstract: Disclosed are a bis(vinylbenzyl) fluorene and a preparation method and use thereof, and a bis(vinylbenzyl) fluorene hydrocarbon resin and a preparation method and use thereof, belonging to the technical field of high-frequency substrate materials. The bis(vinylbenzyl) fluorene is selected from 9,9-bis(2-vinylbenzyl)-9H-fluorene having a structure shown in formula I and 9,9-bis(4-vinylbenzyl)-9H-fluorene having a structure shown in formula II: the 9,9-bis(2-vinylbenzyl)-9H-fluorene has a monoclinic crystal system; and the 9,9-bis(4-vinylbenzyl)-9H-fluorene has a triclinic crystal system.

Abstract: Provided are a low-molecular weight asymmetric thermosetting polyphenylene oxide (PPO) resin polymer, and a preparation method, a purification method and use thereof, relating to the technical field of resin materials. The low-molecular weight asymmetric thermosetting PPO resin polymer according to the present disclosure has an excellent dielectric property, a desirable film-forming property, a high cost performance, and an excellent comprehensive performance. A bifunctional PPO oligomer is completely reacted in two steps, and the polymer turns fully to thermosetting from thermoplastic. A product with a desirable film-forming property is prepared with reduced cost.