Aiming at domestic C9 petroleum resin disadvantages of simplex variety, less grades and narrow application, suggestions of using secondary polymerization and enhanc...
英
美
- 针对国内C9石油树脂品种单一、牌号少、应用范围小的现状,提出了采用二次聚合工艺,加强应用开发研究的建议。