EP0040038A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Granular detergent compositions
Assignee: Procter and Gamble Ltd
•
Filing: 1981-05-06
•
Granted: —
•
Expires: 2001-05-06
Abstract
Abstract Built granular detergent compositions containing from 0.015% to 0.2%, based on weight of magnesium, of a water-soluble magnesium salt and 0.05% to 0.4% (acid basis) of ethylenediaminetetraimethylene phosphonic acid), diethylenetriamine penta(methylene phosphonic acid) or water-soluble salts thereof. The compositions deliver improved detergency at low wash temperatures.
Inventors
- 👤 Peter Robson
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 03:12
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/02; C11D3/04; C11D3/046; C11D1/00; C11D1/66; C11D1/72; C11D3/16; C11D3/36; C11D3/364
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
76 words
A granular detergent composition characterized by (a) from 5% to 30% of surfactant selected from anionic and ethoxylated nonionic surfactants and mixtures thereof, (b) from 5% ,to 90% of inorganic or organic detergency builder, (c) from 0.015% to 0.20%, based on weight of magnesium, of water-soluble magnesium salt, and (d) from 0.05% to 0.4%, based on the weight of aminopolyphosphonic acid, of ethylenediamine tetra (methylene phosphonic acid), diethylenetriamine penta (methylene phosphonic acid), or water-soluble salts thereof.
Claim 2
Dependent Claim
76 words
A granular detergent composition characterized by (a) from 5% to 30% of surfactant selected from anionic and ethoxylated nonionic surfactants and mixtures thereof, (b) from 5% ,to 90% of inorganic or organic detergency builder, (c) from 0.015% to 0.20%, based on weight of magnesium, of water-soluble magnesium salt, and (d) from 0.05% to 0.4%, based on the weight of aminopolyphosphonic acid, of ethylenediamine tetra (methylene phosphonic acid), diethylenetriamine penta (methylene phosphonic acid), or water-soluble salts thereof.
Claim 3
Dependent Claim
35 words
A composition according to Claim 1 characterized in that the surfactant is selected from ethoxylated nonionic surfactants and mixtures thereof with synthetic anionic surfactants in a weight ratio of nonionic:anionic surfactant of at least 1:1.
Claim 4
Dependent Claim
39 words
A composition according to Claim 2 characterized in that the surfactant is a mixture of ethoxylated nonionic surfactant, synthetic anionic surfactant and anionic soap, wherein the weight ratio of synthetic anionic surfactant to anionic soap is at least 1:1.
Claim 5
Dependent Claim
34 words
A composition according to any of Claims 1 to 3 characterized by from 0.05% to 0.25% (acid basis) of ethylene diamine penta(methylene phosphonic acid),diethylenetriamine- penta(methylene phosphonic acid) or alkali metal or ammonium salts thereof.
Claim 6
Dependent Claim
26 words
A composition according to any of Claims 1 to 4 characterized by from 0.05% to 0.12%, based on weight of magnesium, of the water-soluble magnesium salt.
Claim 7
Dependent Claim
28 words
A composition according to any of Claims 1 to 5 characterized in that the water-soluble magnesium salt is selected from magnesium sulfate, magnesium chloride and the hydrates thereof.
Claim 8
Dependent Claim
39 words
A composition according to any of Claims 1 to 6 characterized in that the nonionic surfactant is the condensation product of a C 9 -C 15 fatty alcohol with an average of 2 to 12 moles of ethylene oxide.
Claim 9
Dependent Claim
38 words
A composition according to any preceding claim characterized by from 8% to 20% by weight of magnesium-insensitive surfactant consisting essentially of a mixture of ethoxylated nonionic surfactant and anionic surfactant in a weight ratio of 8:1 to 5:4.
Claim 10
Dependent Claim
76 words
A composition according to any preceding claim characterized in that it additionally comprises: (a) from 1% to 35% bleach selected from peroxy salts, peroxy acids and organic peroxyacid precursors, (b) from 1% to 85% alkali metal sulfate, (c) from 1% to 15% alkali metal silicate of formula nSi0 2 .M 2 0 wherein n is from 1 to 3.3 and M is an alkali metal cation, and (d) from 0.1% to 2% of an aminocarboxylate sequestrant.
Claim 11
Dependent Claim
49 words
A process of making a granular detergent composition according to any preceding claim characterized by forming an aqueous slurry comprising anionic surfactant, detergency builder and water-soluble magnesium salt, spray-drying the aqueous slurry to form a detergent base granule and - dispersing ethoxylated nonionic surfactant onto the detergent base granule.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.