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Detergent compsn contg optimally sized bleach activator particles

A technology of bleaching activator and detergent, applied in detergent composition, non-surface active detergent composition, coating detergent composition, etc. Bleach/bleach activators vary widely, etc.

Inactive Publication Date: 2001-02-14
THE PROCTER & GAMBLE COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the past, bleach activators in the form of relatively large particles, agglomerates or other particles have hindered such sanitation advertising because the segregation effect of products with such larger particles inhibits the consistent removal of large amounts from laundered fabrics. microbes
Bleach / bleach activators delivered in the wash are too variable to meet most government agency sanitization advertising claims

Method used

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Examples

Experimental program
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Embodiment Construction

[0014] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0015] The detergent compositions of the present invention comprise essentially two components, namely a peroxygen bleach compound and a bleach activator in particulate form having a defined average particle size. In a preferred form, the particles are substantially in the form of cylindrical extrudates. Preferably, the peroxygen bleach compound is capable of generating hydrogen peroxide in aqueous solution. The detergent compositions of the present invention are surprisingly stable with respect to the fact that the bleach activators remain or do not degrade upon prolonged storage prior to use. Preferably, one or more binder materials are included in the bleach activator pellet or extrudate, including, but not limited to, palmitic acid, detersive surfactants, polyethylene glycols and other fatty acids and polyacrylates.

[0016] Without being limited by theory, it is believed that by selecting the particle sizes descr...

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Abstract

A bleach-containing detergent composition which contains a peroxygen bleaching compound and a bleach activator is disclosed. The bleach activator is in the form of particles having a mean particle diameter of 200 microns to 2000 microns. Also disclosed are bleach activator particles in the form of substantially cylindrically-shaped extrudates having a mean extrudate length of from about 500 microns to about 3500 microns and a mean extrudate diameter of from about 450 microns to about 850 microns.

Description

[0001] Cross References to Related Applications [0002] This case is a continuation-in-part of now-approved US Application Serial No. 08 / 974784, filed November 20, 1997. field of invention [0003] The present invention relates to detergent compositions comprising a peroxygen bleaching compound and bleach activator particles selected for improved stability and performance. Background of the invention [0004] As is known, surface bleaching of fabrics is the bleaching mechanism in which the bleaching mechanism occurs on the surface of the fabric, thereby removing stains and / or soils. Typical bleaching compositions contain a peroxygen bleach which generates hydrogen peroxide in aqueous solution and a bleach activator which enhances the bleaching performance. Peroxygen bleaches have long been known to be effective in removing stains and / or soils from fabrics, but they are also extremely temperature dependent. Such bleaching agents are substantially only operable and / or effec...

Claims

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Application Information

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IPC IPC(8): C11D3/39C11D17/00C11D17/06
CPCC11D3/391C11D17/0039C11D3/3935C11D3/3915
Inventor A·J·W·安格尔J·A·保利S·M·加布里尔D·R·布朗M·E·伯恩斯
Owner THE PROCTER & GAMBLE COMPANY