Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1999-02-17
2000-09-12
Seaman, D. Margaret
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
546347, C07D21500, C07D21192, C07D21318, C07D21320
Patent
active
061180009
ABSTRACT:
The present invention is directed to methods for preparing quaternary ammonium salts, particularly pyridinium and quinolinium salts. By preparing these salts in a solvent selected from the group consisting of propylene glycols, propylene glycol ethers and mixtures thereof, the production of undesirable by-products and contamination of the product with undesirable solvents are minimized, if not eliminated. Using the preparation methods of the present invention low hazard corrosion inhibitors and aqueous cleaning solutions using these inhibitors may be prepared. In fact, by preparing dodecyl pyridinium bromide in dipropylene glycol methyl ether as the solvent, a particularly desirable corrosion inhibitor characterized by a low toxicity and a high flash point has been prepared. The present invention thus provides the safer corrosion inhibitors and cleaning solutions long sought by industrial cleaning services.
REFERENCES:
patent: Re30714 (1981-08-01), Harriman et al.
patent: Re30796 (1981-11-01), Lesinski
patent: 3404094 (1968-10-01), Keeney et al.
patent: 3413160 (1968-11-01), Teumac
patent: 4071746 (1978-01-01), Quinlan
patent: 4539140 (1985-09-01), Quinlan
patent: 4637899 (1987-01-01), Kennedy, Jr.
patent: 4734259 (1988-03-01), Frenier et al.
patent: 5096618 (1992-03-01), Frenier
Chemical Abstracts 123:313968, Bymaster, 1995.
Chemical Abstracts 66:72278, Law, 1967.
Casreact 123:228348, Miura, 1995.
Casereact 107:198156, Hosomi, 1987.
Casreact 106:196234, Ezquerra, 1986.
Casreact 106:4823, Alvarez-Builla, 1986.
Casreact 102:131885. Yamaguchi, 1985.
Hydrochem Industrial Services, Inc.
Seaman D. Margaret
LandOfFree
Methods for preparing quaternary ammonium salts does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Methods for preparing quaternary ammonium salts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods for preparing quaternary ammonium salts will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-97496