US4827028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anionic surfactants
Assignee: Arch Chemicals Inc
•
Filing: 1984-04-23
•
Granted: 1989-05-02
•
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 18:21
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.
References Cited (Backward Citations)
US3419510A
Cited
US3983058A
Cited
US4124552A
Cited
US4207227A
Cited
US4250077A
Cited
US4207421A
Cited
US4263413A
Cited
US4317940A
Cited
US4365024A
Cited
US4460738A
Cited
US4521615A
Cited
US4533485A
Cited
US4533486A
Cited
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 |