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:
Aug. 26, 2003
Filed:
Aug. 07, 2000
Applicant:
Inventors:
Nami Choi, Tsukuba, JP;
Shun-ya Onozawa, Tsukuba, JP;
Toshiyasu Sakakura, Tsukuba, JP;
Masato Tanaka, Tsukuba, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 4/64 ; C07F 1/700 ;
U.S. Cl.
CPC ...
C08F 4/64 ; C07F 1/700 ;
Abstract
A polysilane is produced by subjecting a trihydrosilane to hydrogenative condensation in the presence of a titanium or zirconim complex catalyst having a first group selected from a dialkylaminoalkylcyclopentadienyl group, an &agr;-[(dialkylamino)alkyl]indenyl group and a &bgr;-[(dialkylamino)alkyl]indenyl group and a second group selected from a cyclopentadienyl group and a pentamethylcyclopentadienyl group. The above dialkylaminoalkyl group may be replaced by a branched alkyl group. The zirconium complexes are novel compounds.