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:
May. 09, 1995
Filed:
Jan. 14, 1994
Applicant:
Inventors:
Seiji Aoki, Tokyo, JP;
Tomonori Kato, Tokyo, JP;
Hiroaki Taniguchi, Tokyo, JP;
Hidetosi Morotomi, Tokyo, JP;
Masami Ono, Tokyo, JP;
Assignees:
NKK Corporation, Houston, JP;
Vista Chemical Company, Houston, TX (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
585820 ; 585822 ; 585828 ; 585831 ;
Abstract
According to the method of the invention, it is possible to separate and selectively remove alkyltetralins coexisting in a small amount in a LAB mixture which is an intermediate raw material for surfactants for detergents, the method conveniently being carried out in a continuous manner using a solid adsorbent.