Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Nitrogen containing other than solely as a nitrogen in an...
Reexamination Certificate
2000-06-13
2001-10-02
Pak, John (Department: 1616)
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Nitrogen containing other than solely as a nitrogen in an...
C514S553000, C514S578000, C504S157000, C504S158000, C422S028000, C510S384000
Reexamination Certificate
active
06297285
ABSTRACT:
FIELD OF THE INVENTION
This invention relates to the use of quaternary ammonium carbonate compositions as low corrosion disinfectants, particularly in hard water solvents.
BACKGROUND OF THE INVENTION
The biocidal activities of other quaternary ammonium compositions have been reported. The biocidal activities of various quaternary ammonium chlorides against bacteria, fungi, and algae are tabulated in
Cationic Surfactants
, E. Jungerman Ed., pp. 56-57, Marcel Dekker, Inc., 1969. Nicholas, “Interaction of Preservatives with Wood,”
Chemistry of Solid Wood
, Advance in Chemistry Series #207, Powell ed., (A.C.S. 1984) notes that didecyldimethyl ammonium compounds, and particularly didecyldimethylammonium chloride, are potential biocides. Preston, J.A.O.C.S. 60:567 (1983) concurs and suggests that maximum fungitoxicity is exhibited with dialkyldimethyl compounds having C
10
-C
12
alkyl groups. Butcher et al., Chem Abstracts No. 91:152627b, suggests that the presence of an acid or a base can affect the activity of didecyldimethylammonium quats.
Ruseggan, in U.K. Patent Publication No. 650,304, discloses a detergent which includes a tetra alkyl quaternary ammonium halide or hydroxide in which two alkyl groups contain from 6 to 9 carbon atoms in each hydrocarbon group and the other two alkyl groups contain 3 to 9 carbon atoms each together with a weak alkali. Such compositions may also include an alkali substrate (See U.K. Patent Publication No. 669,506).
Hunter et al., U.S. Pat. No. 3,169,983, disclose glycol monoborate salts of quaternary amines that are useful as active biocides and fungicides in soaps, detergents, and dry cleaning compositions.
It has now been discovered that quaternary ammonium carbonates can be used as disinfectants, particularly in hard water. These compositions have low corrosion properties.
Some carbonate quats can be prepared by heating trimethylamine with carbon dioxide and methanol above 200° C. and at 85 to 95 atmospheres.
Industrial Organic Nitrogen Compounds
, Astle Ed. p 66, Reinhold Inc, 1961. However, this reaction is limited to the methyl compound because higher homologs decompose to olefins by the Hoffman elimination reaction. See,
Organic Reactions
, 11, Chptr. 5, 377, Krieger Publishing Co., 1975.
Chem Abst. 110, 212114 (1989) suggests that dimethyl carbonate will react with triethylamine in methanol in twelve hours at 115° C. and under pressure to yield a methyl carbonate quat ester.
Chem Abst. 114, 24824 (1991) discloses that 6-hydroxyhexyldimethylamine reacts with dimethyl carbonate to yield a carbonate ester quat.
REFERENCES:
patent: 2295504 (1942-09-01), Shelton
patent: 3169983 (1965-02-01), Hunter et al.
patent: 5312841 (1994-05-01), Peterson
patent: 5438034 (1995-08-01), Walker
patent: 6080789 (2000-06-01), Lutz
patent: 650304 (1951-02-01), None
patent: 669506 (1952-04-01), None
Block, Seymour S. Disinfection, sterilization, and preservation. 4th edition, Lea & Febiger, Philadelphia, pp. 225-252, 1991.*
Cationic Surfactants,E. Jungerman Ed., pp. 56-57, Marcel Dekker, Inc., 1969.
Nicholas, “Interaction of Preservatives with Wood,”The Chemistry of Solid Wood,Advance in Chemistry Series #207, Powell ed., (A.C.S. 1984).
Preston, J.A.O.C.S. 60:567 (1983).
Butcher et al.,Chemical Abstracts91:1526267b (1979).
Industrial Organic Nitrogen Compounds,Astle Ed. p 66, Reinhold Inc, 1961.
Organic Reactions,11, Chptr. 5, 377, Krieger Publishing Co., 1975.
Chemical Abstracts110:212114e (1989).
Chemical Abstracts114:24824v (1991).
Darby & Darby
Lonza Inc.
Pak John
LandOfFree
Disinfecting use of quaternary ammonium carbonates does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Disinfecting use of quaternary ammonium carbonates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Disinfecting use of quaternary ammonium carbonates will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2579419