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EP0367339A2
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Process for preparing a high bulk density granular detergent composition
Assignee: Unilever PLC
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Filing: 1989-10-26
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Granted: —
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Expires: 2009-10-26
Abstract
Abstract A granular detergent composition or component having a bulk density of at least 650 g/l can be prepared by treating a particulate starting material (i) in a first step in a high-speed mixer/densifier, the mean residence time being from about 5-30 seconds; (ii) in a second step in a moderate-speed granulator/densifier, whereby it is brought into, or maintained in, a deformable state, the mean residence time being from about 1-10 minutes and (iii) in a final step in drying and/or cooling apparatus. Preferably, the deformable state is induced in the first step.
Inventors
- 👤 Peter Willem Appel
- 👤 Petrus Leonardus Johannes Swinkels
- 👤 Marco Waas
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 16:45
CPC Classifications
C; C11; C11D; C11D17/00; C11D17/06; C11D17/065; C11D11/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
86 words
Process for the continuous preparation of a granular detergent composition or component having a bulk density of at least 650 g/l, which comprises treating a particulate starting material (i) in a first step in a high-speed mixer/densifier, the mean residence time being from about 5-30 seconds; (ii) in a second step in a moderate-speed granulator/densifier, whereby it is brought into, or maintained in, a deformable state, the mean residence time being from about 1-10 minutes and (iii) in a final step in drying and/or cooling apparatus.
Claim 2
Dependent Claim
86 words
Process for the continuous preparation of a granular detergent composition or component having a bulk density of at least 650 g/l, which comprises treating a particulate starting material (i) in a first step in a high-speed mixer/densifier, the mean residence time being from about 5-30 seconds; (ii) in a second step in a moderate-speed granulator/densifier, whereby it is brought into, or maintained in, a deformable state, the mean residence time being from about 1-10 minutes and (iii) in a final step in drying and/or cooling apparatus.
Claim 3
Dependent Claim
24 words
Process according to Claim 1, wherein the particulate starting material is already brought into, or maintained in, a deformable state in the first step.
Claim 4
Dependent Claim
19 words
Process according to Claims 1-2, wherein the mean residence time in the second step is form about 2-5 minutes.
Claim 5
Dependent Claim
26 words
Process according to Claims 1-3, wherein the deformable state is brought about by operating at temperatures above 45°C and/or adding liquid to the particulate starting material.
Claim 6
Dependent Claim
21 words
Process according to Claims 1-4, wherein nonionics and/or water are sprayed on to the particulate starting material in the first step.
Claim 7
Dependent Claim
19 words
Process according to Claims 1-5, wherein the particulate starting material comprises a mixture of spray-dried material and other solids.
Claim 8
Dependent Claim
16 words
process according to Claims 1-6, wherein the particulate starting material is a spray-dried detergents base powder.
Claim 9
Dependent Claim
23 words
Process according to Claims 1-7, wherein the particle porosity of the final granular detergent product is less than 10%, preferably less than 5%.
Claim 10
Dependent Claim
24 words
Granular detergent composition obtainable by the process according to Claims 1-8 and having a particle porosity of less than 10%, preferably less than 5%.
References Cited (Backward Citations)
No citation records indexed.
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