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. 24, 2002
Filed:
Mar. 06, 2001
Applicant:
Inventors:
Hiroyuki Kousaka, Funabashi, JP;
Yasuyuki Nakajima, Funabashi, JP;
Assignee:
Nissan Chemical Industries, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
C07D / ;
Abstract
The present invention provides a process which enables easy and inexpensive preparation of alkylenebismelamines usable as components for forming resin materials, particularly aminoplasts, and flame retardants. The present invention is a process for preparation of alkylenebismelamines wherein the alkylene is a linear or branched C one by reacting an alkylenediamine wherein the alkylene is a linear or branched C one with melamine in the presence of an acidic catalyst under heating, characterized in that the amount of melamine is at least twice that of the alkylenediamine by mole.