摘要
在分析聚异丁烯聚合机理的基础上,进行了合成高活性聚异丁烯催化剂的研究,研制出了一种适用于利用混合碳四合成高活性聚异丁烯的催化剂体系,并探索了聚合反应规律。研究发现,利用不同原料合成聚异丁烯时,应该根据目标产物相对分子质量确定反应温度和催化剂加入量。合成的聚异丁烯α-烯烃质量分数大于70％,相对分子质量可控,能够满足“热加合”工艺合成润滑油高档无灰剂的要求。
By analyzing the mechanism of isobutylene polymerization, a new catalyst for synthesis of highly reactive polyisobutylene from mixed C4 fraction was prepared. Factors affecting polymerization, such as feedstock components, types of catalyst and adding dosage, reaction temperature and reaction time, were investigated. It was found that the reaction temperature and the catalyst dosage had greater effect than the others on the relative molecular weight of the polyisobutylene. The α-alkene content of the polyisobutylene obtained was more than 70% with adjustable molecular weight. It could meet the requirements of synthesizing high level ashless dispersant for lubricant by heat addition process.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2006年第3期19-23,共5页
Petroleum Processing and Petrochemicals
关键词
聚异丁烯
催化剂
混合
碳四
聚合过程
polyisobutylene
catalyst
mixing
C4 fraction
polymerization process
