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. 07, 2004
Filed:
Mar. 13, 2002
Boyapati Manoranjan Choudary, Andhra Pradesh, IN;
Mannepalli Lakshmi Kantam, Andhra Pradesh, IN;
Katuri Jeeva Ratnam, Andhra Pradesh, IN;
Vijayakumar Karasala, Andhra Pradesh, IN;
Sridhar Chidara, Andhra Pradesh, IN;
Venkatachalam Subbiah, Kerala, IN;
Santosh Gopalakrishnan, Kerala, IN;
Ramaswamy Rajagopalan, Kerala, IN;
Ninan Ninan Kovoor, Kerala, IN;
Kuchibhatla Sitarama Sastri, Kerala, IN;
Council of Scientific and Industrial Research, New Delhi, IN;
Abstract
The present invention provides an ecofriendly method for preparing dinitramidic acid and its salts by nitration of ammonium sulfamate with fuming nitric acid as a nitrating agent using solid acid catalysts selected from the group consisting of a montmorillonite clay catalyst and metal ion exchanged K10 montmorillonite clay catalysts and surface supported catalysts and preparation of ammonium dinitramide by neutralization of the dinitramidic acid with ammonia and separation of ammonium dinitramide.