Joseph M Richards

US Patent:

6828294, Dec 7, 2004

Filed:

Aug 6, 2002

Appl. No.:

10/213027

Inventors:

Kenneth E. Kellar - Flemington NJ
Joseph C. Richards - West Windsor NJ
Crystal A. Nesbitt - Bridgewater NJ

Assignee:

FMC Corporation - Philadelphia PA

International Classification:

C11D 348

US Classification:

510382, 510536

Abstract:

An aqueous composition suitable for use as a high-retention sanitizer, especially on irregular and/or non-horizontal surfaces and surfaces on which water does not readily spread, a method for sanitizing a surface using the composition, and kits comprising components of the composition. The composition contains an organic peracid, preferably peracetic acid, or other antimicrobial agent, and a retention aid. The retention aid preferably is provided as a concentrate for admixture with the antimicrobial agent at point of use and comprises a mixture of a non-ionic surfactant, an ionic surfactant, and optionally a water-soluble magnesium ion source; or a mixture of a biopolymer thickening agent and at least one surfactant, and optionally a water-soluble magnesium ion source. In either retention aid, the magnesium ion source stabilizes foams formed from the retention aids in hard water and maintains retention aidconcentrates in a liquid state at room temperature if one of the surfactants is sodium lauryl sulfate, or magnesium lauryl sulfate or mixture thereof. The composition is preferably applied as a foam to the surface of the object to be sanitized.

US Patent:

8029693, Oct 4, 2011

Filed:

Jan 30, 2009

Appl. No.:

12/362873

Inventors:

Emmanuel A. Dada - Bensalem PA, US
Joseph C. Richards - West Windsor NJ, US

Assignee:

FMC Corporation - Philadelphia PA

International Classification:

C07F 5/02

US Classification:

25218212, 562 6

Abstract:

A method for the rapid dilution of an aqueous peracid solution, particularly, peracetic acid, in which a concentrated peracid solution is diluted with an aqueous diluent to produce a more dilute peracid solution in which the solution components are already at equilibrium immediately after dilution. The peracid in a preferred embodiment of this method is peracetic acid, for which the aqueous diluent is acetic acid and water, or hydrogen peroxide and water, or acetic acid, hydrogen peroxide and water, whose relative amounts are selected to produce a diluted aqueous peracid acid solution whose peracetic acid, hydrogen peroxide and acetic acid components are in equilibrium immediately after dilution.

US Patent:

20040171507, Sep 2, 2004

Filed:

Mar 11, 2004

Appl. No.:

10/798491

Inventors:

Kenneth Kellar - Flemington NJ, US
Joseph Richards - West Windsor NJ, US
Crystal Nesbitt - Bridgewater NJ, US

International Classification:

C11D003/00

US Classification:

510/367000

Abstract:

An aqueous composition suitable for use as a high-retention sanitizer, especially on irregular and/or non-horizontal surfaces and surfaces on which water does not readily spread, a method for sanitizing a surface using the composition, and kits comprising components of the composition. The composition contains an organic peracid, preferably peracetic acid, or other antimicrobial agent, and a retention aid. The retention aid preferably is provided as a concentrate for admixture with the antimicrobial agent at point of use and comprises a mixture of a non-ionic surfactant, an ionic surfactant, and optionally a water-soluble magnesium ion source; or a mixture of a biopolymer thickening agent and at least one surfactant, and optionally a water-soluble magnesium ion source. In either retention aid, the magnesium ion source stabilizes foams formed from the retention aids in hard water and maintains retention aidconcentrates in a liquid state at room temperature if one of the surfactants is sodium lauryl sulfate, or magnesium lauryl sulfate or mixture thereof. The composition is preferably applied as a foam to the surface of the object to be sanitized.