US4299740A
Expired / Lapsed
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Concentrated organic sulphonate solutions
Assignee: Solvay Solutions UK Ltd
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Filing: 1980-07-01
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Granted: 1981-11-10
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Expires: 2000-07-01
Abstract
Abstract It is known to prepare olefin sulphonates by neutralizing olefin sulphonation products with dilute aqueous bases. This invention provides a method of preparing more concentrated solutions of certain olefin sulphonates by determining the position of the viscosity minimum which occurs at concentrations above the critical limit where gel formation is normally observed and which corresponds to the formation of a `G` phase, and reacting the olefin sulphonation product with the base in the presence of sufficient water to provide a product having a concentration corresponding substantially to this minimum.
Inventors
- 👤 Edward Messenger
- 👤 Douglas E. Mather
- 👤 Brinley M. Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:07
CPC Classifications
C; C07; C07C; C07C309/00; C11; C11D; C11D1/00; C11D1/02; C11D1/12; C11D1/14; C11D1/143
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
192 words
In the method for preparing pourable aqueous olefin sulphonate compositions which exhibit an immobile gel phase in at least part of the concentration range 40 to 55% by weight active, and a mobil "G" phase at an active concentration greater than that at which said immobile gel phase is formed, which method consists essentially in reacting sulphonated olefins having from 8 to 20 carbon atoms with a base selected from the group consisting of sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, ammonia, ammonium carbonate and primary, secondary and tertiary amines having a total of up to 4 carbon atoms, in the presence of water thereby forming an aqueous solution of olefin sulphonate salt containing up to 8% of electrolyte formed as a by-product of said neutralization, the improvement which consists in performing the reaction in the presence of sufficient water to provide an olefin sulphonate product having a concentration corresponding substantially to the minimum value in its concentration against viscosity curve, which occurs between 60 and 90% by weight and above the lowest concentration at which gel formation is observed and in the substantial absence of organic cosolvents or added electrolyte.
Claim 2
Dependent Claim
192 words
In the method for preparing pourable aqueous olefin sulphonate compositions which exhibit an immobile gel phase in at least part of the concentration range 40 to 55% by weight active, and a mobil "G" phase at an active concentration greater than that at which said immobile gel phase is formed, which method consists essentially in reacting sulphonated olefins having from 8 to 20 carbon atoms with a base selected from the group consisting of sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, ammonia, ammonium carbonate and primary, secondary and tertiary amines having a total of up to 4 carbon atoms, in the presence of water thereby forming an aqueous solution of olefin sulphonate salt containing up to 8% of electrolyte formed as a by-product of said neutralization, the improvement which consists in performing the reaction in the presence of sufficient water to provide an olefin sulphonate product having a concentration corresponding substantially to the minimum value in its concentration against viscosity curve, which occurs between 60 and 90% by weight and above the lowest concentration at which gel formation is observed and in the substantial absence of organic cosolvents or added electrolyte.
Claim 3
Dependent Claim
20 words
The method of claim 1 performed in the substantial absence of cosolvent and containing up to 5% of said electrolyte.
Claim 4
Dependent Claim
11 words
The method of claim 1 wherein the base is an alkylolamine.
Claim 5
Dependent Claim
51 words
A method according to claim 1 which comprises performing in any order the steps of (a) mixing the sulphonated olefin with sufficient of the base to provide a final product of about neutral pH and (b) hydrolysing the sulphonation product with water at between about 100° C. and about 200° C.
Claim 6
Dependent Claim
19 words
A method according to claim 4 wherein the olefin has an average of from 12 to 18 carbon atoms.
Claim 7
Dependent Claim
14 words
A method according to claim 5 wherein the olefin has 1 ethylenic double bond.
Claim 8
Dependent Claim
15 words
A method according to claim 6 wherein the olefin is a straight chain alpha olefin.
Claim 9
Dependent Claim
130 words
In the method of preparing pourable aqueous olefin sulphonate compositions which consists essentially in sulphonating an olefin having from 12 to 18 carbon atoms and performing in any order the steps of (a) mixing the sulphonated olefin with aqueous sodium hydroxide to provide about neutral pH and (b) hydrolysing the sulphonation product with water, thereby forming an aqueous solution of sodium olefin sulphonate containing about 2.5 to about 8% of sulphate formed as a by-product of said neutralisation, the improvement which consists in performing at least said step (a) in the presence of only sufficient water to provide the olefin sulphonate product as a pourable aqueous "G" phase with concentration between 60 and 90% by weight of active ingredient and in the substantial absence of organic cosolvents or added electrolyte.
Claim 10
Dependent Claim
130 words
In the method of preparing pourable aqueous olefin sulphonate compositions which consists essentially in sulphonating an olefin having from 12 to 18 carbon atoms and performing in any order the steps of (a) mixing the sulphonated olefin with aqueous sodium hydroxide to provide about neutral pH and (b) hydrolysing the sulphonation product with water, thereby forming an aqueous solution of sodium olefin sulphonate containing about 2.5 to about 8% of sulphate formed as a by-product of said neutralisation, the improvement which consists in performing at least said step (a) in the presence of only sufficient water to provide the olefin sulphonate product as a pourable aqueous "G" phase with concentration between 60 and 90% by weight of active ingredient and in the substantial absence of organic cosolvents or added electrolyte.
Claim 11
Dependent Claim
152 words
A pourable aqueous olefin sulphonate composition consisting essentially of (a) water; (b) between 60 and 90% based on the weight of the composition of an active ingredient which is a mixture of an alkene sulphonate salt with from 40 to 60%, based on the weight of the active ingredient, of a hydroxy alkane sulphonate salt, wherein said salts each comprise an anion having an average of from 8 to 20 carbon atoms and a cation selected from the group consisting of sodium, potassium, ammonium and amines having up to four carbon atoms, and (c) up to about 8% total, based on the weight of the composition of a sulphate of said cation formed as a by-product of a neutralization operation during the production of said sulphate composition and in the substantial absence of organic cosolvents or added eletrolyte, wherein said active ingredient is present as a "G" thereby providing a pourable composition.
Claim 12
Dependent Claim
152 words
A pourable aqueous olefin sulphonate composition consisting essentially of (a) water; (b) between 60 and 90% based on the weight of the composition of an active ingredient which is a mixture of an alkene sulphonate salt with from 40 to 60%, based on the weight of the active ingredient, of a hydroxy alkane sulphonate salt, wherein said salts each comprise an anion having an average of from 8 to 20 carbon atoms and a cation selected from the group consisting of sodium, potassium, ammonium and amines having up to four carbon atoms, and (c) up to about 8% total, based on the weight of the composition of a sulphate of said cation formed as a by-product of a neutralization operation during the production of said sulphate composition and in the substantial absence of organic cosolvents or added eletrolyte, wherein said active ingredient is present as a "G" thereby providing a pourable composition.
Claim 13
Dependent Claim
32 words
A composition according to claim 9 substantially free from cosolvents wherein said cation is sodium and the component (c) is present in proportion of up to 5% by weight of the composition.
Claim 14
Dependent Claim
32 words
A composition according to claim 9, substantially free from cosolvents, wherein said cation is ammonia and the component (c) is present in proportion of up to 5% by weight of the composition.
Claim 15
Dependent Claim
40 words
A composition according to claim 9, substantially free from cosolvents, wherein said cation is an amine having from 1 to 4 carbon atoms and the component (c) is present in proportion of up to 5% by weight of the composition.
Claim 16
Dependent Claim
19 words
A composition according to claim 12 wherein said cation is an ethanolamine having from 1 to 2 hydroxyethyl groups.
Claim 17
Dependent Claim
109 words
A pourable aqueous olefin sulphonate composition consisting essentially of (a) water; (b) from 60 to 80% by weight of an active ingredient consisting essentially of sodium alkene sulphonate and from about 40% to about 60% by weight of the active ingredient of a sodium hydroxy alkane sulphonate, each having an average of from 12 to 18 carbon atoms; and (c) from 2.5 to 6% by weight of sodium sulphate formed as the by-product of a neutralization operation during the production of said sulphonate composition, said composition containing substantially no organic cosolvents or added electrolyte, wherein said active ingredient is present as a "G" phase, thereby providing a pourable composition.
Claim 18
Dependent Claim
109 words
A pourable aqueous olefin sulphonate composition consisting essentially of (a) water; (b) from 60 to 80% by weight of an active ingredient consisting essentially of sodium alkene sulphonate and from about 40% to about 60% by weight of the active ingredient of a sodium hydroxy alkane sulphonate, each having an average of from 12 to 18 carbon atoms; and (c) from 2.5 to 6% by weight of sodium sulphate formed as the by-product of a neutralization operation during the production of said sulphonate composition, said composition containing substantially no organic cosolvents or added electrolyte, wherein said active ingredient is present as a "G" phase, thereby providing a pourable composition.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-11-09 | 1985-05-11 | 1985-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-09 | 1989-05-11 | 1989-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-09 | 1993-05-11 | 1993-11-10 | $7700.00 | Window Closed / Lapsed |