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:
Sep. 27, 2005
Filed:
Nov. 01, 2002
Applicants:
Yasunori Chayama, Komatsu, JP;
Ikutaro Morikawa, Yokohama, JP;
Hiroaki Shoji, Tokyo, JP;
Inventors:
Assignee:
Nippon Unicar Company Limited, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07F007/02 ; C07F007/08 ; C07F007/18 ;
U.S. Cl.
CPC ...
Abstract
The method for producing polyorganosiloxane from at least one type of organosilicon compound having a siloxane unit or alkoxysilane by the equilibrating reaction involving cleavage and recombination of the silicon-oxygen bond as a method carried out in the presence of an acidic catalyst capable of giving the product in high productivity and yield, corrosive to the system to a limited extent, and remaining in the product to a limited extent or degrading product quality to a limited extent if it remains, wherein a solid, acidic zirconium oxide catalyst is used as the acidic catalyst.