The invention concerns new macrocyclic diesters of the general formula: ##STR1## wherein x is an integer from 8 to 11, which are valuable odorants and a process for their preparation.
Makrocyclische Diester, Verfahren zu ihrer Herstellung und ihre Verwendung als Riechstoffe
申请人:HAARMANN & REIMER GMBH
公开号:EP0023612A1
公开(公告)日:1981-02-11
Makrocyclische Diester der Formel
in der x für eine Zahl von 8 bis 11 steht,
ein Verfahren zu ihrer Herstellung und ihre Verwendung als Riechstoffe.
式中 x 为 8 至 11 之间数字的大环二酯,其制备方法及其作为发臭物质的用途。
OLEFIN POLYMERIZATION CATALYST COMPONENT AND PRODUCTION PROCESS THEREOF, AND PRODUCTION PROCES OF OLEFIN POLYMERIZATION CATALYST AND OLEFIN POLYMER
申请人:OKADA Mitsuhiro
公开号:US20110245439A1
公开(公告)日:2011-10-06
A solid catalyst component for olefin polymerization containing a titanium atom, a magnesium atom, a halogen atom, and a defined internal electron donor such as dodecanedioyl dichloride; a production process of such a solid catalyst component, using a titanium compound, a magnesium compound, and the above internal electron donor, or using a solid component containing a titanium atom and a magnesium atom, and the above internal electron donor; a production process of a solid catalyst, using (i) the above solid catalyst component, (ii) an organoaluminum compound, and (iii) an external electron donor; and a production process of an olefin polymer using the above solid catalyst.