The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 22, 2009
Filed:
Jun. 25, 2008
Raw material for forming a strontium-containing thin film and process for preparing the raw material
Hidekimi Kadokura, Sakado, JP;
Shintaro Higashi, Tsurugashima, JP;
Yoshinori Kuboshima, Tokyo, JP;
Kabushikikaisha Kojundokagaku Kenkyusho, Saitama, JP;
Abstract
The present invention provides a raw material for forming a strontium-containing thin film of a cyclopentadienyl-based strontium compound, which is in the liquid state at room temperature to 50° C., can be purified by distillation, present as a monomer, has high vapor pressure, and suitable for mass production, and a process for preparing the same. Sr[C(CH)(CH)]is prepared by reacting Na[C(CH)(CH)]or K[C(CH)(CH)]with SrIin THF to produce a THF adduct of Sr[C(CH)(CH)]; evaporating THF and extracting the residue with toluene to give a toluene solution; evaporating toluene and drying the residue under reduced pressure; and heating to 100 to 160° C. in vacuo to dissociate and remove THF and distilling.