EP0340013A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Detergent compositions and process for preparing them
Assignee: Unilever PLC
•
Filing: 1989-04-27
•
Granted: —
•
Expires: 2009-04-27
Abstract
Abstract A granular detergent composition or component therefor, which is preferably free of phosphate builders, has a bulk density of at least 650 g/litre and comprises from 17 to 35 wt% of non-soap detergent-active material (consisting at least partially of anionic detergent-active material) and from 28 to 45 wt% (anhydrous basis) of crystalline or amorphous sodium aluminosilicate, the weight ratio of (b) to (a) being from 0.9:1 to 2.6:1. The particle porosity is preferably less than 0.20. The composition may be prepared by granulation and densification in a high-speed mixer/granulator.
Inventors
- 👤 Robert Donaldson
- 👤 Andrew Timothy Hight
- 👤 Michael William Hollingsworth
- 👤 Keiichi Kawafuchi
- 👤 Donald Peter
- 👤 Peter John Russell
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 16:30
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/66; C11D1/82; C11D17/00; C11D17/06; C11D17/065; C11D3/00; C11D3/02; C11D3/12; C11D3/124; C11D3/1246; C11D3/128
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
74 words
A granular detergent composition or component therefor, characterised in that it has a bulk density of at least 650 g/litre, and comprises: (a) from 17 to 35 wt% of non-soap detergent-active material consisting at least partially of anionic detergent-active material; (b) from 28 to 45 wt% (anhydrous basis) of crystalline or amorphous sodium aluminosilicate, the weight ratio of (b) to (a) being from 0.9:1 to 2.6:1, and optionally other detergent components to 100 wt%.
Claim 2
Dependent Claim
74 words
A granular detergent composition or component therefor, characterised in that it has a bulk density of at least 650 g/litre, and comprises: (a) from 17 to 35 wt% of non-soap detergent-active material consisting at least partially of anionic detergent-active material; (b) from 28 to 45 wt% (anhydrous basis) of crystalline or amorphous sodium aluminosilicate, the weight ratio of (b) to (a) being from 0.9:1 to 2.6:1, and optionally other detergent components to 100 wt%.
Claim 3
Dependent Claim
20 words
A detergent composition or component as claimed in any preceding claim, characterised by a particle porosity of less than 0.25.
Claim 4
Dependent Claim
19 words
A detergent composition or component as claimed in claim 2, characterised by a particle porosity of less than 0.20.
Claim 5
Dependent Claim
29 words
A detergent composition or component as claimed in any preceding claim, characterised in that the ratio of (b) to (a) is within the range of from 1.2:1 to 1.8:1.
Claim 6
Dependent Claim
21 words
A detergent composition or component as claimed in any preceding claim, characterised in that the aluminosilicate (b) is a crystalline zeolite.
Claim 7
Dependent Claim
24 words
A detergent composition or component as claimed in any preceding claim, chracterised in that it contains form 0 to 5 wt% of phosphate builders.
Claim 8
Dependent Claim
135 words
A process for the preparation of a granular detergent composition or component having a bulk density of at least 650 g/litre, which is characterised by the step of treating a particulate starting material comprising: (a) from 5 to 35 wt% of non-soap detergent-active material consisting at least partially of anionic detergent-active material, and (b) from 28 to 45 wt% (anhydrous basis) of crystalline or amorphous sodium aluminosilicate, the weight ratio of (b) to (a) being at least 0.9:1, and optionally other detergent components to 100 wt%, in a high-speed mixer/granulator having both a stirring action and a cutting action, in the presence of a liquid binder but in the absence of a finely divided particulate agent for improving surface properties, whereby granulation and densification to a bulk density of at least 650 g/litre are effected.
Claim 9
Dependent Claim
135 words
A process for the preparation of a granular detergent composition or component having a bulk density of at least 650 g/litre, which is characterised by the step of treating a particulate starting material comprising: (a) from 5 to 35 wt% of non-soap detergent-active material consisting at least partially of anionic detergent-active material, and (b) from 28 to 45 wt% (anhydrous basis) of crystalline or amorphous sodium aluminosilicate, the weight ratio of (b) to (a) being at least 0.9:1, and optionally other detergent components to 100 wt%, in a high-speed mixer/granulator having both a stirring action and a cutting action, in the presence of a liquid binder but in the absence of a finely divided particulate agent for improving surface properties, whereby granulation and densification to a bulk density of at least 650 g/litre are effected.
Claim 10
Dependent Claim
25 words
A process as claimed in claim 7, characterised in that granulation is carried out in a bowl-type high-speed mixer/granulator having a substantially vertical stirrer axis.
Claim 11
Dependent Claim
24 words
A process as claimed in claim 7 or claim 8, characterised in that the particulate starting material consists at least partially of spray-dried powder.
Claim 12
Dependent Claim
34 words
A process as claimed in any one of claims 7 to 9, characterised in that the particulate starting material is prepared at least in part by mixing in the high-speed mixer/granulator prior to granulation.
Claim 13
Dependent Claim
27 words
A process as claimed in any one of claims 7 to 10, characterised in that granulation effects an increase in bulk density to at least 700 g/litre.
Claim 14
Dependent Claim
33 words
A process as claimed in any one of claims 7 to 11, characterised by the further step of admixing a finely divided particulate flow aid to the granular material after granulation is complete.
Claim 15
Dependent Claim
34 words
A process as claimed in claim 12, characterised in that the flow aid is amorphous sodium aluminosilicate and is added in an amount of from 0.2 to 5.0 wt% based on the total composition.
Claim 16
Dependent Claim
36 words
A process as claimed in claim 12, characterised in that the flow aid is finely divided crystalline sodium aluminosilicate and is added in an amount of from 3.0 to 12.0 wt% based on the total composition.
Claim 17
Dependent Claim
71 words
A process as claimed in any one of claims 7 to 14, characterised in that the particulate starting material comprises: (a) from 17 to 35 wt% of non-soap detergent-active material consisting at least partially of anionic detergent-active material, and (b) from 28 to 45 wt% of crystalline or amorphous sodium aluminosilicate, the weight ratio of (b) to (a) being from 0.9:1 to 2.6:1, and optionally other detergent components to 100 wt%.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.