摘要
以甲基苯基二甲氧基硅烷为原料,在盐酸催化下,在过量水中进行水解缩聚反应,得到端羟基聚甲基苯基硅氧烷。采用红外光谱、核磁共振谱和飞行时间质谱对产物进行了表征,并探讨了水解缩聚机理。结果表明,产物是以四聚体为主的端羟基聚甲基苯基硅氧烷,平均相对分子质量为862。
Hydroxyl terminated polymethylphenylsiloxane was prepared via hydrolysis /condensation of dimethoxymethylphenylsilane in water with hydrochloric acid as a catalyst .The structure of the product was characterized by FTIR、 NMR and MADLI-TOF/TOF MS, and the behavior of hydrolysis and condensation was proposed .Result shows that the product consists of linear hydroxyl terminated polymethylphenylsiloxane oligomers with an average molecular weight of 862 and tetramer is the major component .
出处
《有机硅材料》
CAS
2014年第3期145-148,共4页
Silicone Material
基金
广东高校轻化工清洁生产工程技术研究中心开发课题基金(31117004)资助项目
关键词
甲基苯基二甲氧基硅烷
羟基
聚甲基苯基硅氧烷
酸
水解
缩聚
dimethoxymethylphenylsilane
hydroxyl
polymethylphenylsiloxane
acid
hydrolysis
condensation
