期刊文献+
共找到3篇文章
< 1 >
每页显示 20 50 100
DQ-Ⅳ催化剂在聚丙烯装置上的试生产
1
作者 严嵘 《现代塑料加工应用》 CAS 2003年第4期26-29,共4页
DQ -Ⅳ球形催化剂在扬子石油化工股份有限公司塑料厂聚丙烯装置上首次进行工业化试生产 ,分别试生产了均聚和嵌段共聚 2种聚丙烯产品 ,并与进口催化剂和原国产催化剂生产作了对比。试生产表明 ,该催化剂活性较其他催化剂略高 ,并且活性... DQ -Ⅳ球形催化剂在扬子石油化工股份有限公司塑料厂聚丙烯装置上首次进行工业化试生产 ,分别试生产了均聚和嵌段共聚 2种聚丙烯产品 ,并与进口催化剂和原国产催化剂生产作了对比。试生产表明 ,该催化剂活性较其他催化剂略高 ,并且活性释放平稳 ,能满足聚丙烯装置生产的需要 。 展开更多
关键词 DQ-Ⅳ球形催化剂 聚丙烯装置 试生产 反应机理
下载PDF
L-Lactide Homopolymerization and Copolymerization with ε-Caprolactone by Tetrahydrosalen Stabilized Yttrium Borohydride Complex
2
作者 Yan-hua Wang Dong Xiang +3 位作者 Rong Ren Jin Luo 孙维林 Zhi-quan Shen 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 2014年第11期1500-1506,共7页
L-lactide(LLA) homopolymerization and copolymerization with ε-caprolactone(CL) in toluene initiated by tetrahydrosalen-supported yttrium borohydride complex were systematically investigated. A possible mechanism ... L-lactide(LLA) homopolymerization and copolymerization with ε-caprolactone(CL) in toluene initiated by tetrahydrosalen-supported yttrium borohydride complex were systematically investigated. A possible mechanism of LLA homopolymerization was proposed according to the 1H-NMR result. In addition, PCL-b-PLLA copolymers were synthesized by sequential addition of monomers and their structure was characterized by GPC, 1H-NMR and 13C-NMR. 展开更多
关键词 Yttrium borohydride complex homopolymerIZATION block copolymer.
原文传递
Drug-polymer inclusion complex as a new pharmaceutical solid form
3
作者 Xiaotong Yang Zhi Zhong +1 位作者 Jun Xu Yanbin Huang 《Chinese Chemical Letters》 SCIE CAS CSCD 2017年第11期2099-2104,共6页
The solid forms of drugs play a central role in controlling their physicochemical properties and consequently the bioavailability. Multiple types of drug solid forms have been developed to achieve the desirable pharma... The solid forms of drugs play a central role in controlling their physicochemical properties and consequently the bioavailability. Multiple types of drug solid forms have been developed to achieve the desirable pharmaceutical profiles, but new solid forms will provide more options for the solid-state property optimization and hence are highly desirable. This review focuses on a new pharmaceutical solid form, drug-polymer inclusion complexes (ICs), and summarizes their structural features, structure- property relationships, as well as potential pharmaceutical applications 展开更多
关键词 Pharmaceutical solid forms Crystalline inclusion complex Thermal stability Dissolution profiles homopolymers block copolymers
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部