Biocidal organoclay

• US 6,165,485 A
• Filed: 07/28/1998
• Issued: 12/26/2000
• Est. Priority Date: 07/28/1998
• Status: Expired due to Term

• Current Assignee: AquaBlok, Ltd
• Original Assignee: Biomin, Inc.
• Inventors: Alther, George
• Primary Examiner(s): Levy, Neil S.
• Application Number:
  US09/123,680
• Time in Patent Office: 882 Days
• Field of Search: 424/405, 424/409, 424/421, 424/667-672, 424/682, 424/724, 423/700-708, 502/60, 502/62, 502/80, 502/85, 502/86, 514/556, 514/769, 514/770, 514/949
• US Class Current: 424/421
• CPC Class Codes: A01N 2300/00 Combinations or mixtures of active ingredients covered by classes A01N27/00 - A01N65/48 with other active or formulation relevant ingredients, e.g. specific carrier materials or surfactants, covered by classes A01N25/00 - A01N65/48
• CPC Class Codes: A01N 25/08 containing solids as carriers or diluents
• CPC Class Codes: A01N 33/12 Quaternary ammonium compounds
• CPC Class Codes: A01N 59/06 Aluminium; Calcium; Magnesium; Compounds thereof
• CPC Class Codes: A01N 59/12 Iodine, e.g. iodophors; Compounds thereof

Abstract

A bentonite based organoclay, when mixed with a biocidal quaternary amine containing a benzyl molecule within its structure, acts as a reasonably effective biocide.

When this organoclay is further treated with iodine and iodide compounds, its efficiency is greatly enhanced.

Claims

1. A modified organic bactericidal mineral media, said media comprising:

a mineral selected from the group consisting of clays and zeolites; and

an organic modifier selected from the group consisting of a quaternary ionic compound in combination with iodine or an iodine compound, or combinations thereof, wherein said organic modifier is present in an amount sufficient to achieve a reduction in bacteria present in aqueous media contacted by the mineral media for an interval of at least five minutes, the amount of bacteria present after five minute exposure being essentially zero.

2. A modified organic media as in claim 1, wherein said mineral comprises bentonite clay.

3. A modified organic media as in claim 1, wherein said mineral is an organically modified clay selected from the group consisting of bentonite, nontronite, beidellite, stevensite, hectorite, attapulgite, saponolite, sepiolite, paligorskite, vermiculite, halloysite, kaolinite, and combinations thereof.

4. A modified organic media as in claim 1, wherein said organic material comprises a zeolite.

6. A modified organic media as in claim 1, wherein said mineral comprises bentonite modified with a quaternary ammonium compound.

7. A modified organic media as in claim 1, wherein said quaternary ammonium compound comprises a benzyl quaternary ammonium compound.

8. A modified organic media as in claim 1, wherein said mineral comprises bentonite modified with a quaternary ammonium compound and is iodinated.

10. A modified organic media as in claim 1, wherein said mineral is modified with a stoichiometric excess of a pyridinium compound.

5. A modified organic bactericidal mineral media, said media comprising:

a mineral selected from the group consisting of clays and zeolites; and

an organic modifier selected from the group consisting of a quaternary ionic compound in combination with iodine or an iodine compound, or combinations thereof, wherein said organic modifier is present in an amount sufficient to achieve a reduction in bacteria present in aqueous media contacted by the mineral media for an interval of five minutes, the amount of bacteria present after five minute exposure being essentially zero.

9. A modified organic bactericidal mineral media, said media comprising:

a mineral selected from the group consisting of clays and zeolites; and

an organic modifier selected from the group consisting of a quaternary ionic compound in combination with iodine or an iodine compound, or combinations thereof, wherein said organic modifier is present in an amount equal to a stoichiometric excess, and wherein said modifier is a phosphonium compounds;

wherein said media is capable of removing and destroying at least a portion of bacterial material present in an aqueous media brought in contact with the modified organic bactericidal media.

11. A modified organic bactericidal mineral media, said media comprising:

a mineral selected from the group consisting of clays and zeolites; and

an organic modifier selected from the group consisting of a quaternary ionic compound in combination with iodine or an iodine compound, or combinations thereof, wherein said organic modifier is present in an amount equal to a stoichiometric excess, wherein said iodine compound comprises polyiodide ions;

wherein said media is capable of removing and destroying at least a portion of bacterial material present in an aqueous media brought in contact with the modified organic bactericidal media.