Patent US4827028A successfully refreshed from Google Patents.
US4827028A
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Anionic surfactants
Assignee: Arch Chemicals Inc
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Filing: 1984-04-23
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Granted: 1989-05-02
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Expires: 2004-04-23
Abstract
Abstract Described are anionic surfactants which are made by (1) reacting maleic acid, fumaric acid, itaconic acid or mixtures thereof with at least one selected epoxy-capped poly(oxyalkylated) alcohol in the presence of a peroxy-type free radical initiator to form a carboxylic acid group-containing addition product and (2) neutralizing said addition product with a sufficient amount of a neutralizing agent to convert at least a major proportion of said carboxylic acid groups to salt groups. These surfactants exhibit excellent surface activity as well as being highly soluble in caustic solutions.
Inventors
- 👤 Michael Scardera
- 👤 Richard M. Mullins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:05
CPC Classifications
C; C07; C07C; C07C59/00; C07C59/125; C07C51/00; C07C51/347; C07C51/367
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
182 words
A surfactant composition made by the process comprising: a. forming a carboxylic acid group-containing addition product by reacting, in the presence of a peroxy-type free radical initiator, an ethylenically unsaturated dicarboxylic acid selected from the group consisting of maleic acid, fumeric acid and mixtures thereof, with at least one epoxy-capped poly(oxyalkylated) alcohol having the formulae (A) and (B): ##STR5## wherein R is an aliphatic hydrocarbon-containing radical having from 1 to about 8 carbon atoms; R 1 is an aliphatic hydrocarbon- containing radical having from about 6 to about 18 carbon atoms; x is an integer having a value from about 6 to about 40 and y is an integer having a value from about 8 to about 50 with the proviso that the ratio of x:y is from about 2:8 to about 8:2; and said mole ratio of said dicarboxylic acid to said epoxy-capped poly(oxyalkylated) alcohol being from about 1:1 to about 10:1; and b. neutralizing said addition product with a sufficient amount of a neutralizing agent to convert at least a major portion of said carboxylic acid groups to salt groups.
Claim 2
Dependent Claim
182 words
A surfactant composition made by the process comprising: a. forming a carboxylic acid group-containing addition product by reacting, in the presence of a peroxy-type free radical initiator, an ethylenically unsaturated dicarboxylic acid selected from the group consisting of maleic acid, fumeric acid and mixtures thereof, with at least one epoxy-capped poly(oxyalkylated) alcohol having the formulae (A) and (B): ##STR5## wherein R is an aliphatic hydrocarbon-containing radical having from 1 to about 8 carbon atoms; R 1 is an aliphatic hydrocarbon- containing radical having from about 6 to about 18 carbon atoms; x is an integer having a value from about 6 to about 40 and y is an integer having a value from about 8 to about 50 with the proviso that the ratio of x:y is from about 2:8 to about 8:2; and said mole ratio of said dicarboxylic acid to said epoxy-capped poly(oxyalkylated) alcohol being from about 1:1 to about 10:1; and b. neutralizing said addition product with a sufficient amount of a neutralizing agent to convert at least a major portion of said carboxylic acid groups to salt groups.
Claim 3
Dependent Claim
151 words
A surfactant composition made by the process comprising: a. forming acarboxylic acid group-containing addition product by reacting, in the presence of a peroxy-type free radical initiator, an ethylenically unsaturated dicarboxylic acid selected from the group consisting of maleic acid, fumaric acid and mixtures thereof, with at least one epoxy-capped poly(oxyalkylated) alcohol having the formulae (A) and (B): ##STR6## wherein R is an aliphatic hydrocarbon-containing radical having from 1 to about 8 carbon atoms; R 1 is an aliphatic hydrocarbon-containing radical having from about 6 to about 18 carbon atoms; x is an integer having a value from about 6 to about 40 and y is an integer having a value from about 8 to about 50 with the proviso that the ratio of x:y is from about 2:8 to about 8:2; and said mole ratio of said dicarboxylic acid to said epoxy-capped poly(oxyalkylated) alcohol being from about 1:1 to about 10:1.
Claim 4
Dependent Claim
151 words
A surfactant composition made by the process comprising: a. forming acarboxylic acid group-containing addition product by reacting, in the presence of a peroxy-type free radical initiator, an ethylenically unsaturated dicarboxylic acid selected from the group consisting of maleic acid, fumaric acid and mixtures thereof, with at least one epoxy-capped poly(oxyalkylated) alcohol having the formulae (A) and (B): ##STR6## wherein R is an aliphatic hydrocarbon-containing radical having from 1 to about 8 carbon atoms; R 1 is an aliphatic hydrocarbon-containing radical having from about 6 to about 18 carbon atoms; x is an integer having a value from about 6 to about 40 and y is an integer having a value from about 8 to about 50 with the proviso that the ratio of x:y is from about 2:8 to about 8:2; and said mole ratio of said dicarboxylic acid to said epoxy-capped poly(oxyalkylated) alcohol being from about 1:1 to about 10:1.
Claim 5
Dependent Claim
26 words
The surfactant composition of claim 1 wherein R is a linear, aliphatic hydrocarbon radical having an average of from about 1 to about 8 carbon atoms.
Claim 6
Dependent Claim
27 words
The surfactant composition of claim 1 wherein R 1 is a linear, aliphatic hydrocarbon radical having an average of from about 10 to about 16 carbon atoms.
Claim 7
Dependent Claim
25 words
The surfactant composition of claim 1 wherein the mole ratio of said dicarboxylic acid to said poly(oxyalkylated) alcohol is from about 2:1 to about 8:1.
Claim 8
Dependent Claim
32 words
The surfactant composition of claim 1 wherein said addition product is neutralized with a sufficient amount of a neutralizing agent to convert at least 70% of carboxylic acid groups to salt groups.
Claim 9
Dependent Claim
32 words
The process of using a surfactant in an aqueous solution containing at least about 10% by weight of an alkali metal hydroxide, wherein said surfactant is a surfactant composition of claim 1.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-05-01 | 1992-10-31 | 1993-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-01 | 1996-10-31 | 1997-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-01 | 2000-10-31 | 2001-05-02 | $7700.00 | Window Closed / Lapsed |