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US4263167A
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Poly(alkylene oxide) compositions
Assignee: Union Carbide Corp
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Filing: 1979-06-29
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Granted: 1981-04-21
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Expires: 1999-06-29
Abstract
Abstract Poly(alkylene oxide) compositions are provided which exhibit excellent resistance to oxidative degradation and inhibit the corrosion of ferrous metals, which compositions have incorporated therein a small effective amount of a bridged dimer of a hydroxyl-substituted aromatic carboxylic acid and salts thereof of the general formula: <IMAGE> (1) or <IMAGE> (2) wherein X is a chemically stable group selected from lower alkylene, sulfonyl, and amino groups, and a sulfur atom, and Y and Y' may be the same or different, and are a hydrogen atom, hydroxyl group, amino group, alkyl group, or sulfonyl group.
Inventors
- 👤 Blake F. Mago
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:36
CPC Classifications
C; C10; C10M; C10M129/00; C10M129/02; C10M129/26; C10M129/48; C10M129/54; C08; C08K; C08K5/00; C08K5/0008; C10M135/00; C10M135/08; C10M135/20; C10M135/28; C10M135/30; C10M173/00; C10M173/02; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/12; C23F11/124; C10M2201/00; C10M2201/02; C10M2207/00; C10M2207/10; C10M2207/14; C10M2207/142; C10M2207/144; C10M2207/146; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/106; C10M2209/107; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/06; C10M2215/062; C10M2219/00; C10M2219/04; C10M2219/042; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10N; C10N2040/00; C10N2040/08; C10N2040/20; C10N2050/00; C10N2050/01
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
93 words
A poly(alkylene oxide) composition which exhibits excellent resistance to oxidative degradation and inhibits the corrosion of ferrous metals comprising a poly(alkylene oxide) having incorporated therein an effective amount of a bridged dimer of a hydroxyl-substituted aromatic carboxylic acid and salts thereof of the general formula: ##STR4## wherein X is a sulfur atom or a chemically stable group selected from the group consisting of lower alkylene, sulfonyl, and amino groups, and Y and Y' may be the same or different, and are a hydrogen atom, hydroxyl group, amino group, alkyl group, or sulfonyl group.
Claim 2
Dependent Claim
93 words
A poly(alkylene oxide) composition which exhibits excellent resistance to oxidative degradation and inhibits the corrosion of ferrous metals comprising a poly(alkylene oxide) having incorporated therein an effective amount of a bridged dimer of a hydroxyl-substituted aromatic carboxylic acid and salts thereof of the general formula: ##STR4## wherein X is a sulfur atom or a chemically stable group selected from the group consisting of lower alkylene, sulfonyl, and amino groups, and Y and Y' may be the same or different, and are a hydrogen atom, hydroxyl group, amino group, alkyl group, or sulfonyl group.
Claim 3
Dependent Claim
27 words
An aqueous composition comprising said poly(alkylene oxide) composition of claim 1 and water said composition containing 0.1 percent to about 50 percent by weight of poly(alkylene oxide).
Claim 4
Dependent Claim
19 words
The composition of claim 2 containing at least about 5 millimoles of said bridged dimer per liter of composition.
Claim 5
Dependent Claim
9 words
The composition of claim 2 which is a solution.
Claim 6
Dependent Claim
24 words
The composition of claim 2 wherein said bridged dimer acid is selected from the group consisting of 5,5'-methylenedisalicylic acid, pamoic acid, and thiodisalicylic acid.
Claim 7
Dependent Claim
14 words
The composition as claimed in claim 1 wherein X is a lower alkylene group.
Claim 8
Dependent Claim
13 words
The composition as claimed in claim 1 wherein X is a methylene group.
Claim 9
Dependent Claim
24 words
The composition of claim 1 wherein said bridged dimer acid is selected from the group consisting of 5,5'-methylenedisalicylic acid, pamoic acid, and thiodisalicylic acid.
Claim 10
Dependent Claim
13 words
The composition of claim 8 wherein said bridged dimer acid is 5,5'-methylenedisalicylic acid.
Claim 11
Dependent Claim
12 words
The composition of claim 1 wherein said poly(alkylene oxide) is water soluble.
Claim 12
Dependent Claim
22 words
The composition of claim 1 wherein said poly(alkylene oxide) is characterized by the presence of both oxyethylene groups and higher oxyalkylene groups.
Claim 13
Dependent Claim
22 words
The composition of claim 1 wherein said composition has incorporated therein the sodium salt of said bridged dimer of aromatic carboxylic acid.
Claim 14
Independent Claim
96 words
A method for preparing poly(alkylene oxide) compositions which exhibit resistance to oxidative degredation and inhibit the corrosion of ferrous metals which comprises incorporating in a poly(alkylene oxide) composition an effective amount of a bridged dimer of a hydroxyl-substituted aromatic carboxylic acid and salts thereof of the general formula: ##STR5## wherein X is a sulfur atom or a chemically stable group selected from the group consisting of lower alkylene, sulfonyl, and amino groups, and Y and Y' may be the same or different, and are a hydrogen atom, hydroxyl group, amino group, alkyl group, or sulfonyl group.
Claim 15
Independent Claim
96 words
A method for preparing poly(alkylene oxide) compositions which exhibit resistance to oxidative degredation and inhibit the corrosion of ferrous metals which comprises incorporating in a poly(alkylene oxide) composition an effective amount of a bridged dimer of a hydroxyl-substituted aromatic carboxylic acid and salts thereof of the general formula: ##STR5## wherein X is a sulfur atom or a chemically stable group selected from the group consisting of lower alkylene, sulfonyl, and amino groups, and Y and Y' may be the same or different, and are a hydrogen atom, hydroxyl group, amino group, alkyl group, or sulfonyl group.
Claim 16
Dependent Claim
15 words
The method of claim 13 wherein said poly (alkylene oxide) composition is an aqueous composition.
Claim 17
Dependent Claim
21 words
The method of claim 14 wherein at least about 5 millimoles of said bridged dimer is added per liter of composition.
Claim 18
Dependent Claim
12 words
The method of claim 13 wherein X is a lower alkylene group.
Claim 19
Dependent Claim
27 words
The method of claim 13 wherein said bridged dimer acid is selected from the group consisting of 5,5'-methylene-disalicylic acid, pamoic acid, thiodisalicylic acid, and their sodium salts.
Claim 20
Independent Claim
12 words
The method of 17 wherein said bridged dimer acid is 5,5'-methylene-disalicylic acid.
Claim 21
Independent Claim
12 words
The method of 17 wherein said bridged dimer acid is 5,5'-methylene-disalicylic acid.
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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) | 1984-04-20 | 1984-10-20 | 1985-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-20 | 1988-10-20 | 1989-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-20 | 1992-10-20 | 1993-04-21 | $7700.00 | Window Closed / Lapsed |