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:
Jan. 05, 1988
Filed:
Feb. 27, 1987
Applicant:
Inventors:
Hiroshi Sato, Osaka, JP;
Kenichi Hirose, Osaka, JP;
Masaru Kitamura, Osaka, JP;
Hideto Tojima, Kyoto, JP;
Norio Ishii, Kyoto, JP;
Assignee:
Sumitomo Chemical Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
540536 ; 540535 ;
Abstract
.epsilon.-caprolactam is prepared by gas phase catalytic synthesis where cyclohexanone oxime is brought into contact with a crystalline zeolite, for example, aluminosilicate zeolite or metallosilicate zeolite having a constraint index of 1-12 which has been surface treated with an organometallic compound represented by the general formula: R.sub.4-n MX.sub.n wherein R which may be identical or different represent an alkyl group of 1-6 carbon atoms or phenyl group, M represnets Si or Ge, X represents Cl or an alkoxy group of 1-6 carbon atoms and n represents 1 or 2.