EP0384070A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Zeolite P, process for its preparation and its use in detergent compositions
Assignee: Ineos Silicas Ltd
•
Filing: 1989-11-01
•
Granted: —
•
Expires: 2009-11-01
Abstract
Abstract Aluminosilicates in the form of P type zeolites are used as detergency builders and have a silicon to aluminium ratio not greater than 1.33, preferably above 0.9. These zeolites will usually have a calcium binding capacity of at least 150 mg CaO per gram of anhydrous aluminosilicate. A preferred form of the zeolite P has a silicon to aluminium ratio up to 1.15, and preferably above 0.9, with a tetragonally distorted cubic crystal structure. A process of the preparation of these zeolite P builders is described.
Inventors
- 👤 Graham Thomas Brown
- 👤 Theo Jan Osinga
- 👤 Michael John Parkington
- 👤 Andrew Thomas Steel
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 17:01
CPC Classifications
C; C01; C01B; C01B39/00; C01B39/02; C01B39/28; C11; C11D; C11D3/00; C11D3/02; C11D3/12; C11D3/124; C11D3/1246; C11D3/128
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
40 words
A detergent composition comprising a surfactant system, a detergency builder system, and optionally other conventional components; the detergency builder system comprising an alkali metal aluminosilicate of the zeolite P type having a silicon to aluminium ratio not greater than 1.33.
Claim 2
Dependent Claim
40 words
A detergent composition comprising a surfactant system, a detergency builder system, and optionally other conventional components; the detergency builder system comprising an alkali metal aluminosilicate of the zeolite P type having a silicon to aluminium ratio not greater than 1.33.
Claim 3
Dependent Claim
37 words
A detergent composition as claimed in claim 1, wherein the detergency builder system comprises an alkali metal aluminosilicate of the zeolite P type having a silicon to aluminium ratio within the range of from 0.9 to 1.33.
Claim 4
Dependent Claim
37 words
A detergent composition as claimed in claim 2, wherein the detergency builder system comprises an alkali metal aluminosilicate of the zeolite P type having a silicon to aluminium ratio within the range of from 0.9 to 1.2.
Claim 5
Dependent Claim
33 words
A detergent composition as claimed in claim 3, wherein the detergency builder system comprises an alkali metal aluminosilicate of the zeolite P type having a silicon to aluminium ratio not greater than 1.15.
Claim 6
Dependent Claim
37 words
A detergent composition as claimed in claim 4, wherein the detergency builder system comprises an alkali metal aluminosilicate of the zeolite P type having a silicon to aluminium ratio within the range of from 0.9 to 1.15.
Claim 7
Dependent Claim
17 words
A detergent composition as claimed in any preceding claim, wherein the aluminosilicate is in sodium salt form.
Claim 8
Dependent Claim
31 words
A detergent composition as claimed in any preceding claim, wherein the aluminosilicate has a calcium binding capacity (as hereinbefore defined) of at least 150 mg CaO per g of anhydrous aluminosilicate.
Claim 9
Dependent Claim
27 words
A detergent composition as claimed in claim 7, wherein the aluminosilicate has a calcium binding capacity of at least 160 mg CaO per g of anhydrous aluminosilicate.
Claim 10
Dependent Claim
29 words
A detergent composition as claimed in any preceding claim, wherein the aluminosilicate has a particle size dso (as hereinbefore defined) within the range of from 0.1 to 5.0 micrometres.
Claim 11
Dependent Claim
25 words
A detergent composition as claimed in claim 9, wherein the aluminosilicate has a particle size dso within the range of from 0.1 to 1.0 micrometres.
Claim 12
Dependent Claim
23 words
A detergent composition as claimed in claim 10, wherein the aluminosilicate has a particle size dso - (as hereinbefore defined) below 1 micrometre.
Claim 13
Dependent Claim
21 words
A detergent composition as claimed in claim 11, wherein the aluminosilicate has a particle size dsα-(as hereinbefore defined) below 3 micrometres.
Claim 14
Dependent Claim
18 words
A detergent composition as claimed in any one of claims 10 to 12, which is in liquid form.
Claim 15
Dependent Claim
22 words
A detergent composition as claimed in any preceding claim, which contains from 20 to 80% by weight of the detergency builder system.
Claim 16
Dependent Claim
21 words
A detergent composition as claimed in claim 11, which contains from 5 to 80% by weight of the alkali metal aluminosilicate.
Claim 17
Dependent Claim
19 words
An alkali metal aluminosilicate of the zeolite P type having a silicon to aluminium ratio not greater than 1.07.
Claim 18
Dependent Claim
19 words
An alkali metal aluminosilicate of the zeolite P type having a silicon to aluminium ratio not greater than 1.07.
Claim 19
Dependent Claim
23 words
An alkali metal aluminosilicate as claimed in claim 16, having a silicon to aluminium ratio within the range of from 0.9 to 1.07.
Claim 20
Dependent Claim
27 words
An alkali metal aluminosilicate of the zeolite P type having a silicon to aluminium ratio not greater than 1.15 and having a tetragonally distorted cubic crystal structure.
Claim 21
Dependent Claim
27 words
An alkali metal aluminosilicate of the zeolite P type having a silicon to aluminium ratio not greater than 1.15 and having a tetragonally distorted cubic crystal structure.
Claim 22
Dependent Claim
38 words
An alkali metal aluminosilicate of the zeolite P type having a silicon to aluminium ratio not greater than 1.15 and having a calcium binding capacity (as hereinbefore defined) of at least 150 mg CaO per g anhydrous aluminosilicate.
Claim 23
Dependent Claim
38 words
An alkali metal aluminosilicate of the zeolite P type having a silicon to aluminium ratio not greater than 1.15 and having a calcium binding capacity (as hereinbefore defined) of at least 150 mg CaO per g anhydrous aluminosilicate.
Claim 24
Dependent Claim
25 words
An alkali metal aluminosilicate as claimed in claim 19, wherein the calcium binding capacity is at least 160 mg CaO per g of anhydrous aluminosilicate.
Claim 25
Dependent Claim
28 words
An alkali metal aluminosilicate as claimed in any one of claims 18 to 20, having a silicon to aluminium ratio within the range of from 0.9 to 1.15.
Claim 26
Dependent Claim
39 words
An alkali metal aluminosilicate of the zeolite P type having a silicon to aluminium ratio not greater than 1.33 and having a calcium binding capacity (as hereinbefore defined) of at least 150 mg CaO per g of anhydrous aluminosilicate.
Claim 27
Dependent Claim
39 words
An alkali metal aluminosilicate of the zeolite P type having a silicon to aluminium ratio not greater than 1.33 and having a calcium binding capacity (as hereinbefore defined) of at least 150 mg CaO per g of anhydrous aluminosilicate.
Claim 28
Dependent Claim
25 words
An alkali metal aluminosilicate as claimed in claim 22, wherein the calcium binding capacity is at least 160 mg CaO per g of anhydrous aluminosilicate.
Claim 29
Dependent Claim
20 words
An alkali metal aluminosilicate as claimed in any one of claims 16 to 23, which is in sodium salt form.
Claim 30
Dependent Claim
32 words
An alkali metal aluminosilicate as claimed in any one of claims 16 to 24, having a particle size d so -(as hereinbefore defined) within the range of from 0.1 to 5.0 micrometres.
Claim 31
Dependent Claim
23 words
An alkali metal aluminosilicate as claimed in claim 25, having a particle size dso within the range of from 0.1 to 1.0 micrometres.
Claim 32
Dependent Claim
23 words
An alkali. metal aluminosilicate as claimed in claim 25 or claim 26, having a particle size dso (as hereinbefore defined) below 1 micrometre.
Claim 33
Dependent Claim
21 words
An alkali metal aluminosilicate as claimed in claim 27, having a particle size d 90 (as hereinbefore defined) below 3 micrometres.
Claim 34
Dependent Claim
16 words
An alkali metal aluminosilicate substantially as hereinbefore described in any one of Examples 1 to 12.
Claim 35
Dependent Claim
16 words
An alkali metal aluminosilicate substantially as hereinbefore described in any one of Examples 1 to 12.
Claim 36
Dependent Claim
191 words
A process for the preparation of an alkali metal aluminosilicate of the zeolite P type having a silicon to aluminium ratio not exceeding 1.33, which comprises the steps of: (i) mixing together a sodium aluminate having a mole ratio Na 2 0:A1 2 0 3 within the range of from 1.4 to 2.0 and a sodium silicate having a mole ratio SiO 2 :Na 2 O within the range of from 0.8 to 3.4 with vigorous stirring at a temperature within the range of from 25 °C to boiling point, usually to 95 C, to give a gel having the following composition: Al 2 O 3 : (1.75-3.5) Si0 2 : (2.3-7.5) Na 2 0 : (80-450)H20; (ii) ageing the gel composition for 0.5 to 10 hours preferably 2 to 5 hours, at a temperature within the range of from 70° C to boilding point, usually to 95 C, with sufficient stirring to maintain any solids present in suspension; (iii) separating the crystalline sodium aluminosilicate thus formed, washing to a pH within the range of from 10 to 12.5, and drying to a moisture content of not less than 5 wt%.
Claim 37
Dependent Claim
191 words
A process for the preparation of an alkali metal aluminosilicate of the zeolite P type having a silicon to aluminium ratio not exceeding 1.33, which comprises the steps of: (i) mixing together a sodium aluminate having a mole ratio Na 2 0:A1 2 0 3 within the range of from 1.4 to 2.0 and a sodium silicate having a mole ratio SiO 2 :Na 2 O within the range of from 0.8 to 3.4 with vigorous stirring at a temperature within the range of from 25 °C to boiling point, usually to 95 C, to give a gel having the following composition: Al 2 O 3 : (1.75-3.5) Si0 2 : (2.3-7.5) Na 2 0 : (80-450)H20; (ii) ageing the gel composition for 0.5 to 10 hours preferably 2 to 5 hours, at a temperature within the range of from 70° C to boilding point, usually to 95 C, with sufficient stirring to maintain any solids present in suspension; (iii) separating the crystalline sodium aluminosilicate thus formed, washing to a pH within the range of from 10 to 12.5, and drying to a moisture content of not less than 5 wt%.
Claim 38
Dependent Claim
38 words
A process for the preparation of an alkali metal aluminosilicate of the zeolite P type having a silicon to aluminium ratio not exceeding 1.33, carried out substantially as hereinbefore described in any one of Examples 1 to 12.
Claim 39
Dependent Claim
38 words
A process for the preparation of an alkali metal aluminosilicate of the zeolite P type having a silicon to aluminium ratio not exceeding 1.33, carried out substantially as hereinbefore described in any one of Examples 1 to 12.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.