Particulate detergent composition

A technology of granular detergent and composition, applied in the field of granular detergent composition with low bulk density, can solve problems such as difficulty in further reduction

Inactive Publication Date: 2000-09-27
UNILEVER NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The compressibility of this composition can be reduced to just above 17% under certain conditions, but further reduction is very difficult without reducing the surfactant content

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0098] components

[0099] The compressibility of compositions 1, 2 and 3 according to the invention is significantly lower than that of comparative powder A. Additionally, even with significantly lower amounts of STP such as in composition 1, significantly improved properties were found. Embodiment 4 and comparative example B

Embodiment 4 and comparative Embodiment B

[0100] The zeolite-built compositions shown in the table below having a moderate surfactant level were prepared by dry blending the components. Both compositions have the same final formulation.

[0101] The antifoam particles contained 70% by weight sodium carbonate, 18% by weight silicone oil and 12% by weight filler.

[0102] components

B

4

F1

94.8

B3

46.5

B2

7.3

N1

18.1

A1

22.4

Anti-foam particles

1.3

1.3

sodium bicarbonate

3.9

3.9

SCMC

0.6

BD [g / l]

449

469

DFR[ml / s]

91

102

Compressibility[%]

22

10

Surfactant content[%]

23.7

24.4

Highly compressible material in base powder

[%]

100

23.7

High compressibility in total composition

Material[%]

94.8

23.7

[0103] components

F5

F6

NaLAS

37.10

26.34

STP

...

Embodiment 7

[0107] components

[0108] All components have low compressibility except antifoam granules. Embodiment 8-10, comparative example D-I

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PUM

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Abstract

A particulate detergent composition having a bulk density of 700 g / l or less and containing at least 10 wt.% (preferably at least 15 wt.%) of organic detergent surfactant comprises a base powder composed of at least two granular components. Less than 80 % by weight, preferably less than 66 % by weight, of the base powder has a compressibility (measured at 20-25 DEG C and about 40 % relative humidity) of 17 % or more. Preferably one of the components of the base powder is a granule containing a high level (at least 60 wt.%) of anionic surfactant.

Description

field of invention [0001] The present invention relates to medium to low bulk density granular detergent compositions. Background of the invention [0002] Medium to low bulk density granular detergent compositions can be prepared by the spray drying process or by agglomeration in a low shear mixer such as a fluidized bed or pan granulator, which can be used as a " base powder". In the spray-drying process, a slurry of ingredients such as anionic detergent actives, builders and optionally nonionic detergent actives is prepared and then sprayed in pulverized form into high temperature cis- or counter-air The resulting granular composition can be used directly as a detergent composition, or other components can be post-dosed, such as heat or moisture sensitive components, to provide a complete powder composition. In practice, the bulk density of the spray-dried granules was found to be below 600 g / l, but post-dosing components can increase the bulk density of the composition...

Claims

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Application Information

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IPC IPC(8): C11D1/66C11D1/83C11D3/06C11D3/12C11D17/06
CPCC11D1/66C11D17/065C11D3/06C11D3/128C11D17/06C11D1/83
Inventor W·D·埃梅赖T·因斯通S·D·利姆G·M·维尔舍林
Owner UNILEVER NV
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