Patent EP0037184A2 successfully refreshed from Google Patents.
EP0037184A2
Expired / Lapsed
EP
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Liquid detergent compositions, their manufacture and their use in washing processes
Assignee: Solvay Interox Ltd
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Filing: 1981-03-09
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Granted: —
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Expires: 2001-03-09
Abstract
Abstract The present invention relates to aqueous alkaline built detergent compositions containing hydrogen peroxide. Alkaline conditions present particular difficulties for preventing the hydrogen peroxide from decomposing excessively rapidly during storage. Aqueous compositions containing a builder, especially polyphosphate or citrate, anionic sulphate or sulphonate surfactant, nonionic ethoxylate surfactant and or sulphonate surfactant, nonionic ethoxylate surfaciant and hydrogen peroxide of acceptable peroxide stability can obtained by employing an alcohol, preterably ethanol, r a polyhydroxy carboxylate, preferably gluconate, or especially both, in conjunction with a phosphonate, especially an ethylene amine methylene phosphonate. Many of such alkaline compositions are formulated to permit the anionic surfactant to work at or near to its optimum pH in conjunction with the builder. The invention also provides similar, but unbuilt compositions containing instead of the builder, additional surfactant, generally nonionic surfactant, and having a somewhat lower pH.
Inventors
- 👤 Eileen Smith
- 👤 Doreen Ann Timperley
- 👤 Dorothy Margaret Titchener
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 11:20
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/39; C11D3/3902; C11D3/3937; C11D3/394; C11D3/3947
Claims Analysis
Total Claims: 40
Claim 1
Independent Claim
119 words
A stabilised aqueous built liquid detergent composition comprising a surfactant, builder, water and if desired hydrotrope and one or more detergent adjuvants characterised in that contains at least 4 % of an anionic sulphate or sulphonate surfactant and/or of a non-ionic ethoxylate surfactant, at least 5 % of a builder selected from alkali metal polyphosphates and carboxylic complexing builders at least 2 % hydrogen peroxide, sufficient alkali metal aryl sulphonate hydrotrope to maintain the composition in a single phase, either by itself or in conjunction with other components, and a stabilising amount of a combination comprising a low molecular weight mono-hydroxy aliphatic alcohol, and/or a polyhydroxy aliphatic carboxylate and an aminomethylene phosphonate or hydroxyalkyl diphosphonate, %'s being by weight.
Claim 2
Dependent Claim
119 words
A stabilised aqueous built liquid detergent composition comprising a surfactant, builder, water and if desired hydrotrope and one or more detergent adjuvants characterised in that contains at least 4 % of an anionic sulphate or sulphonate surfactant and/or of a non-ionic ethoxylate surfactant, at least 5 % of a builder selected from alkali metal polyphosphates and carboxylic complexing builders at least 2 % hydrogen peroxide, sufficient alkali metal aryl sulphonate hydrotrope to maintain the composition in a single phase, either by itself or in conjunction with other components, and a stabilising amount of a combination comprising a low molecular weight mono-hydroxy aliphatic alcohol, and/or a polyhydroxy aliphatic carboxylate and an aminomethylene phosphonate or hydroxyalkyl diphosphonate, %'s being by weight.
Claim 3
Dependent Claim
28 words
A composition according to claim 1 characterised in that the proportion of anionic sulphate or sulphonate surfactant is selected within the range of 3 to 15 % weight.
Claim 4
Dependent Claim
29 words
A composition according to claim 1 or 2 characterised in that the proportion of nonionic alcohol ethoxylate is selected within the range of 3 to 15 % by weight.
Claim 5
Dependent Claim
29 words
A composition according to any preceding claim characterised in that the weight proportion of ethoxylate in the nonionic alcohol ethoxylate is from 60 to 80 % of the molecule.
Claim 6
Dependent Claim
29 words
A composition according to any preceding claim characterised in that the total proportion of anionic sulphate or sulphonate and nonionic alcohol ethoxylate surfactants is from 6 to 15 %.
Claim 7
Dependent Claim
29 words
A composition according to any preceding claim characterised in that the weight ratio of anionic sulphate or sulphonate surfactant to nonionic alcohol ethoxylate surfactant is from 5:2 to 2:5.
Claim 8
Dependent Claim
22 words
A composition according to any preceding claim characterised in that the builder is a polyphosphate or an hydroxy carboxylic acid complexing builder.
Claim 9
Dependent Claim
23 words
A composition according to claim 7 characterised in that the proportion of builder is selected within the range 9 to 16% by weight.
Claim 10
Dependent Claim
17 words
A composition according to claim 7 or 8 characterised in that the polyphosphate is potassium tetra pyrophosphate.
Claim 11
Dependent Claim
18 words
A composition according to claim 7 or 8 characterised in that the builder is an alkali metal citrate.
Claim 12
Dependent Claim
32 words
A composition according to any of claims 1 to 6 characterised in that the builder comprises up to 10% nitrilotriacetic acid, alkali metal salt or up to 8% carboxymethylsuccinate, alkali metal salt.
Claim 13
Dependent Claim
30 words
A composition according to any preceding claim characterised in that the total proportion of all components except for water and hydrogen peroxide is from 30 to 45 % by weight.
Claim 14
Dependent Claim
120 words
A modification of the stabilised aqueous liquid detergent composition according to claim 1, being an unbuilt detergent composition comprising a surfactant, water and if desired hydrotrope and one or more detergent adjuvants characterised in that it contains at least 10 % of an anionic surfactant and/or of a non-ionic ethoxylate surfactant, of which at least 5 % is nonionic surfactant, at least 2 % hydrogen peroxide, sufficient alkali metal aryl sulphonate hydrotrope to maintain the composition in a single phase, either by itself or in conjunction with other components, and a stabilising amount of a combination comprising a low molecular weight mono-hydroxy aliphatic alcohol, and/or a polyhydroxy aliphatic carboxylate and an aminomethylene phosphonate or hydroxyalkyl diphosphonate, %'s being by weight.
Claim 15
Dependent Claim
28 words
A composition according to claim 13 characterised in that the proportion of anionic sulphate or sulphonate surfactant is selected within the range of 3 to 15 % weight.
Claim 16
Dependent Claim
29 words
A composition according to claim 13 or 14 characterised in that the proportion of nonionic alcohol ethoxylate is selected within the range of 5 to 35 % by weight.
Claim 17
Dependent Claim
32 words
A composition according to any of claims 13 to 15 characterised in that the weight proportion of ethoxylate in the nonionic alcohol ethoxylate is from 60 to 80 % of the molecule.
Claim 18
Dependent Claim
32 words
A composition according to any of claims 13 to 16 characterised in that the total proportion of anionic sulphate or sulphonate and nonionic alcohol ethoxylate surfactants is from 6 to 40 %.
Claim 19
Dependent Claim
32 words
A composition according to any of claims 13 to 17 characterised in that the weight ratio of anionic sulphate or sulphonate surfactant to nonionic alcohol ethoxylate surfactant is from 1:3 to 1:6.
Claim 20
Dependent Claim
33 words
A composition according to any of claims 13 to 18 characterised in that the total proportion of all components except for water and hydrogen peroxide is from 40 to 55 % by weight.
Claim 21
Dependent Claim
26 words
A composition according to any preceding claim characterised in that the proportion of hydrogen peroxide is selected within the range 5 to 15 % by weight.
Claim 22
Dependent Claim
26 words
A composition according to any preceding claim characterised in that the proportion of sulphonate hydrotrope is selected within the range 3 to 9 % by weight.
Claim 23
Dependent Claim
24 words
A composition according to any preceding claim characterised in that it contains from 1 to 3 % by weight of an ethoxylated phosphate ester.
Claim 24
Dependent Claim
29 words
A composition according to any preceding claim characterised in that the proportion of low molecular weight aliphatic alcohol is selected within the range 5 to 15 % by weight.
Claim 25
Dependent Claim
18 words
A composition according to any preceding claim characterised in that the low molecular weight aliphatic alcohol is ethanol.
Claim 26
Dependent Claim
19 words
A composition according to claim 24 characterised in that the ethanol is introduced in the form of methylated spirits.
Claim 27
Dependent Claim
23 words
A composition acording to any preceding claim characterised in that the proportion of polyhydroxy carboxylate as from 0.1 to 0.4 % by weight.
Claim 28
Dependent Claim
18 words
A composition according to any preceding claim characterised in that the polyhydroxy carboxylate is an alkali metal gluconate.
Claim 29
Dependent Claim
26 words
A composition according to any preceding claim characterised in that the proportion of phosphonate is selected within the range of 0.075 to 1 % by weight.
Claim 30
Dependent Claim
40 words
A composition according to any preceding claim characterised in that the phosphonate is an ethylene diamine tetra (methylene phosphonic acid) or hexamethylene diamine tetra (methylene phosphonic acid) or diethylene triamine penta (methylene phosphonic acid) or an alkali metal salt thereof.
Claim 31
Dependent Claim
26 words
A composition according to any preceding claim characterised in that it contains from 5 to 12 % by weight ethanol, a polyhydroxy carboxylate and a phosphonate.
Claim 32
Dependent Claim
42 words
A composition according to claim 1, 13 or 30 characterised in that the weight ratio of the polyhydroxy carboxylate to the phosphonate is from 2:1 to 1:1, in a total proportion the two components of from 0.2 to 1 % by weight.
Claim 33
Dependent Claim
113 words
A built liquid detergent composition according to claim 1 characterised in that it comprises from 8 to 12 % in total of anionic sulphate or sulphonate surfactant and nonionic ethoxylated surfactants, from 9 to 15 % builder selected from alkali metal, tetra pyrophosphate or alkali metal citrate from 3 to 9 % alkali metal aryl sulphonate hydrotrope; from 5 to 12 %, ethanol; from 5 to 10 %, hydrogen peroxide; from 0.2 to 1 % in total of a polyhydroxy linear C 6 or C 7 aliphatic carboxylate, and an alkali metal methylene phosphonate complexing agent, up to 5 % of detergent adjuvant or adjuvants and the balance, water, %s being by weight.
Claim 34
Dependent Claim
110 words
A composition according to claim 32 characterised by one or more of the following features :- (i) from 3 to 8 % of the surfactant is anionic and 2 to 8 % is nonionic; (ii) the builder is selected from potassium tetrapyrophosphate and sodium citrate; (iii) from 8 to 12 % ethanol is used; (iv) the aliphatic carboxylate is an alkali metal gluconate; (v) the phosphonate complexing agent is an ethylene diamine tetramethylene phosphonate, hexamethylene diamine tetramethylene phosphonate or diethylene triamine pentamethylene phosphonate; (vi) the aliphatic carboxylate and phosphonate complexing agent are in a weight ratio of 2:1 to 1:1. (vii) the water content is from 55 to 65 %.
Claim 35
Dependent Claim
96 words
An unbuilt liquid detergent according to claim 13 characterised in that it comprises from 25 to 40 % in total of anionic sulphate or sulphonate surfactant and nonionic ethoxylated surfactants, from 3 to 9 % alkali metal aryl sulphonate hydrotrope; from 5 to 12 % ethanol; from 5 to 10 % hydrogen peroxide; from 0.2 to 1 % in total of a polyhydroxy linear C 6 or C 7 aliphatic carboxylate, and an alkali metal methylene phosphonate complexing agent, up to 5 % of detergent adjuvant or adjuvants and the balance, water, %s being by weight.
Claim 36
Dependent Claim
99 words
A composition according to claim 34 characterised by one or more of the following features :- (i) from 3 to 8 % of the surfactant is anionic and 20 to 35 % is nonionic; (ii) from 8 to 12 % ethanol is used; (iii) the aliphatic carboxylate is an alkali metal gluconate; (iv) the phosphonate complexing agent is an ethylene diamine tetramethylene phosphonate, hexamethylene diamine tetramethylene phosphonate or diethylene triamine pentamethylene phosphonate; (v) the aliphatic carboxylate and phosphonate complexing agent are in a weight ratio of 2:1 to 1:1. (vi) the water content is from 40 to 60 %.
Claim 37
Dependent Claim
69 words
A process for the production of stabilised detergent compositions containing bleach wherein the components are brought into contact with each other and mixed until an homogenous mixture is obtained, characterised in that the components are as described in any preceding claim and the order of introduction of the components is arranged such that the hydrogen peroxide contacts the builder or surfactants only in the presence of the stabiliser system.
Claim 38
Dependent Claim
59 words
A process for washing or laundering comprising the steps of diluting a detergent composition of to a desired extent and contacting the article to be washed with the dilute solution at a temperature from ambient to the boiling point of the solution characterised in that the detergent composition employed is as described in any of claims 1 to 35.
Claim 39
Dependent Claim
35 words
A liquid detergent composition or a process for preparing a detergent composition or a process for washing or laundering employing any novel feature described herein, alone or in combination with any other feature described herein.
Claim 40
Dependent Claim
35 words
A liquid detergent composition or a process for preparing a detergent composition or a process for washing or laundering employing any novel feature described herein, alone or in combination with any other feature described herein.
References Cited (Backward Citations)
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