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:
Oct. 30, 1990
Filed:
Jun. 20, 1989
Applicant:
Inventors:
Hideyuki Takahashi, Ibaraki, JP;
Shohei Suzuki, Mie, JP;
Tomohiko Takahama, Mie, JP;
Tadamichi Aoki, Mie, JP;
Yoshikazu Higaki, Mie, JP;
Karl Trukenbrod, Marl, DE;
Assignees:
Mitsubishi Petrochemical Co., Ltd., Tokyo, JP;
Huls Aktiengesellschaft, Marl, DE;
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
585-5 ; 585-4 ;
Abstract
A method of inhibiting polymerization of styrenes is disclosed, comprising the process of jointly using nitrosophenols and p-tertiarybutyl catecol for composing the polymerization inhibiting agent usable during the distillation process of styrenes.