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Antimicrobial particles

A technology of anti-microbial and anti-microbial agents, applied in the direction of chemicals, biocides, animal repellants, etc. for biological control, can solve the problems of poor anti-microbial efficacy, high use cost, disappointment, etc., and achieve high anti-microbial Effects of Efficacy, Increased Deposition Rate, Efficient Delivery

Pending Publication Date: 2022-05-27
THE PROCTER & GAMBLE COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the context of solid, granular laundry detergent products, it has been found that such diphenyl ether antimicrobials, especially 4-4'- Dichloro-2-hydroxydiphenyl ether (commonly known as "Dichlosan" or its trade name " HP 100", as commercially available from BASF) has disappointingly poor antimicrobial efficacy
To compensate for such poor antimicrobial efficacy, such antimicrobial agents need to be provided in granular laundry detergent products at concentration levels significantly higher than in liquid laundry detergent products, so that it becomes impractical to use cost prohibitively

Method used

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Examples

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Effect test

preparation example Construction

[0090] Preparation of antimicrobial particles

[0091] For supports that can be conveniently processed as a melt, a rotational molding process can be used. The mixture of molten carrier and other materials making up the particles is prepared, for example, in a batch or continuous mixing process. The molten mixture can be pumped to a rotary forming machine, such as a Sandvik ROTOFORM 3000 with a 750mm wide, 10m long belt. The rotary forming apparatus may have a rotating cylinder. The cylinder may have 2mm diameter holes arranged at 10mm spacing in the transverse direction and 9.35mm spacing in the longitudinal direction. The cylinder may be positioned approximately 3mm above the belt. The belt speed and the rotation speed of the drum can be set to about 10 m / min. The molten mixture can pass through holes in the rotating drum and be deposited on a moving conveyor positioned below the rotating drum.

[0092] The molten mixture may be cooled on a moving conveyor to form a p...

Embodiment 1

[0121] Example 1: Antimicrobial particles

[0122] The following are exemplary antimicrobial particles A-E according to the present invention:

[0123] Table 1

[0124]

[0125]

[0126] 1 by trade name HP100, supplied by BASF, contains 30% 4-4'-dichloro-2-hydroxydiphenyl ether active in 1,2-propanediol solution. Concentrations provided herein are pure active levels, not raw material levels.

[0127] 2 C18 unsaturated DEEHMAMS (diethyl ester hydroxyethyl methyl ammonium methyl methyl sulfate), available from EVONIK, has an iodine number of about 42.

[0128] 3 Polymer PK, available from Dow Chemical, is a cationic hydroxyethyl cellulose with a weight average molecular weight of 400 kDa, a charge density of 0.18 and an average weight percent nitrogen / anhydroglucose repeat unit of 0.28%.

Embodiment 2

[0129] Example 2: Antimicrobial particles in granular laundry detergent products

[0130] The antimicrobial particles of the present invention from Example 1 were incorporated into the following granular laundry detergent products of Formulations I-V:

[0131] Table 2

[0132] Composition (wt%) I II III IV C 11 -C 13 Linear Alkylbenzene Sulfonate (LAS)

[0133] 1 Any of the antimicrobial beads A-E of the invention from Example 1 or mixtures thereof.

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Abstract

The present invention provides a composition comprising a plurality of antimicrobial particles, each comprising: (a) from 25% to 99%, by total weight of the particles, of a water-soluble carrier; and (b) a diphenyl ether antimicrobial agent, wherein each particle of the plurality of particles has a mass of from about 1 mg to about 1 g. Preferably, each of the antimicrobial particles further comprises a perfume. More preferably, the composition is a particulate laundry detergent composition comprising a combination of the plurality of antimicrobial particles and detergent particles.

Description

technical field [0001] Through-the-wash laundry additives and fabric treatment compositions comprising the same. Background technique [0002] In addition to the original intended function, consumer products have evolved to address user needs for antimicrobial benefits. For example, users expect antimicrobial laundry detergent products to have an antimicrobial benefit on fabrics while cleaning the fabrics. Currently, various antimicrobial agents (eg, diphenyl ethers) are known to be used in consumer product formulations to deliver antimicrobial effects. [0003] However, in the context of laundry detergents, achieving the desired efficacy of antimicrobials on fabrics is challenging. Specifically, during the wash cycle, most active ingredients, including incorporated antimicrobials, are eventually washed away with the wash solution. Thus, only a small amount of the antimicrobial agent released by the laundry detergent can be deposited on the washed fabrics. To compensate ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11D3/48C11D17/04C11D17/08C11D3/00C11D3/37C11D11/00A61Q19/10
CPCC11D3/48C11D3/2068C11D3/24C11D3/3707A01N25/08A01P1/00C11D2111/12A01N31/14
Inventor 阿马尼·达阿里纳·萨拉姆克里斯廷·莱得里克·威廉姆斯黛博拉·勒让德井川阳子赵璞
Owner THE PROCTER & GAMBLE COMPANY
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