Patent US4631139A successfully refreshed from Google Patents.
US4631139A
Expired / Lapsed
US
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Corrosion inhibiting metal working fluid
Assignee: Texaco Development Corp
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Filing: 1985-08-08
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Granted: 1986-12-23
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Expires: 2005-08-08
Abstract
Abstract The invention is a corrosion inhibiting water-based machining fluid comprising a synergistic combination of a 2-heptyl-1-ethoxypriopionic acid imidazoline, sodium salt; free amine and a mixture of an amine salt of C 8 to C 14 dicarboxylic acids.
Inventors
- 👤 James R. Burton
- 👤 David J. Kushner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:04
CPC Classifications
C; C10; C10M; C10M173/00; C10M173/02; C10M133/00; C10M133/02; C10M133/04; C10M133/06; C10M133/08; C10M133/38; C10M133/44; C10M133/46; C10M2201/00; C10M2201/02; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/22; C10M2215/223; C10M2215/224; C10N; C10N2030/00; C10N2030/12; C10N2040/00; C10N2040/20; C10N2040/22; C10N2050/00; C10N2050/01
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
114 words
A water-base composition which is non corroding to metals in contact therewith comprising an effective corrosion inhibiting amount of a concentrate comprising: A. 2-heptyl-1-ethoxypropionic acid imidazoline, sodium salt in an amount of at least about 2 wt %; B. a free amine selected from the group consisting of diethanolamine, triethanolamine and mixtures thereof in an amount of about 20 to 27 wt %; and C. an amine salt of a dicarboxylic acid selected from the group consisting of the diethanolamine and triethanolamine salts of a C 8 to C 14 dicarboxylic acid and mixtures thereof in an amount such that the weight ratio of amine salt to free amine is about 3:8 to 5:8.
Claim 2
Dependent Claim
114 words
A water-base composition which is non corroding to metals in contact therewith comprising an effective corrosion inhibiting amount of a concentrate comprising: A. 2-heptyl-1-ethoxypropionic acid imidazoline, sodium salt in an amount of at least about 2 wt %; B. a free amine selected from the group consisting of diethanolamine, triethanolamine and mixtures thereof in an amount of about 20 to 27 wt %; and C. an amine salt of a dicarboxylic acid selected from the group consisting of the diethanolamine and triethanolamine salts of a C 8 to C 14 dicarboxylic acid and mixtures thereof in an amount such that the weight ratio of amine salt to free amine is about 3:8 to 5:8.
Claim 3
Dependent Claim
22 words
The water-base composition of claim 1 wherein in the concentrate the weight ratio of amine salt to free amine is about 4:8.
Claim 4
Dependent Claim
26 words
The water-base composition of claim 1 wherein in the concentrate the 2-heptyl-1-ethoxy propionic acid imidazole, sodium salt is in an amount of about 2 wt %.
Claim 5
Dependent Claim
18 words
The water-base composition of claim 1 wherein in the concentrate the dicarboxylic acid is a linear dicarboxylic acid.
Claim 6
Dependent Claim
20 words
The water-base composition of claim 1 wherein in the concentrate the dicarboxylic acid is a mixture of linear dicarboxylic acids.
Claim 7
Dependent Claim
23 words
The water-base composition of claim 1 wherein in the concentrate the free amine is triethanolamine and the amine salt is a triethanolamine salt.
Claim 8
Dependent Claim
14 words
The water-base composition of claim 1 wherein the concentrate additionally comprises an ethoxylated nonylphenol.
Claim 9
Dependent Claim
93 words
A water-based composition which is non corroding to metals in contact therewith comprising an effective corrosion inhibiting amount of a concentrate comprising: A. 2-heptyl-1-ethoxypropionic acid imidazoline, sodium salt in an amount of at least about 2 wt %; B. triethanolamine is an amount of about 20 to 27 wt %; and C. the triethanolamine salt of a dicarboxylic acid selected from the group consisting of a linear C 8 to C 14 dicarboxylic acid and mixtures thereof in an amount such that the weight ratio of triethanolamine salt to triethanolamine is about 4:8.
Claim 10
Dependent Claim
93 words
A water-based composition which is non corroding to metals in contact therewith comprising an effective corrosion inhibiting amount of a concentrate comprising: A. 2-heptyl-1-ethoxypropionic acid imidazoline, sodium salt in an amount of at least about 2 wt %; B. triethanolamine is an amount of about 20 to 27 wt %; and C. the triethanolamine salt of a dicarboxylic acid selected from the group consisting of a linear C 8 to C 14 dicarboxylic acid and mixtures thereof in an amount such that the weight ratio of triethanolamine salt to triethanolamine is about 4:8.
Claim 11
Dependent Claim
14 words
The composition of claim 7 which additionally comprises in the concentrate a polyethoxylated nonylphenol.
Claim 12
Dependent Claim
125 words
In a metal machining process comprising a metal working element, wherein the improvement comprises contacting the metal working element with a water-base composition comprising an effective corrosion inhibiting amount of concentrate comprising: A. 2-heptyl-1-ethoxypropionic acid imidazoline, sodium salt in an amount of at least about 2 wt %; B. a free amine selected from the group consisting of diethanolamine, triethanolamine and mixtures thereof in an amount of about 20 to 27 wt %; and C. an amine salt of a dicarboxylic acid selected from the group consisting of the diethanolamine and triethanolamine salts of a C 8 to C 14 dicarboxylic acid and mixtures thereof in an amount such that the weight ratio of amine amine salt to free amine is about 3:8 to 5:8.
Claim 13
Dependent Claim
125 words
In a metal machining process comprising a metal working element, wherein the improvement comprises contacting the metal working element with a water-base composition comprising an effective corrosion inhibiting amount of concentrate comprising: A. 2-heptyl-1-ethoxypropionic acid imidazoline, sodium salt in an amount of at least about 2 wt %; B. a free amine selected from the group consisting of diethanolamine, triethanolamine and mixtures thereof in an amount of about 20 to 27 wt %; and C. an amine salt of a dicarboxylic acid selected from the group consisting of the diethanolamine and triethanolamine salts of a C 8 to C 14 dicarboxylic acid and mixtures thereof in an amount such that the weight ratio of amine amine salt to free amine is about 3:8 to 5:8.
Claim 14
Dependent Claim
23 words
The metal machining process of claim 10 wherein in the concentrate the weight ratio of amine salt to free amine is about 4:8.
Claim 15
Dependent Claim
27 words
The metal machining process of claim 10 wherein in the concentrate the 2-heptyl-1-ethoxy propionic acid imidazole, sodium salt is in an amount of about 2 wt %.
Claim 16
Dependent Claim
19 words
The metal machining process of claim 10 wherein in the concentrate the dicarboxylic acid is a linear dicarboxylic acid.
Claim 17
Dependent Claim
21 words
The metal machining process of claim 10 wherein in the concentrate the dicarboxylic acid is a mixture of linear dicarboxylic acids.
Claim 18
Dependent Claim
24 words
The metal machining process of claim 10 wherein in the concentrate the free amine is triethanolamine and the amine salt is a triethanolamine salt.
Claim 19
Dependent Claim
16 words
The metal machining process of claim 10 wherein in the concentrate additionally comprises a polyethoxylated nonylphenol.
Claim 20
Dependent Claim
104 words
In a metal machining process comprising a metal working element, wherein the improvement comprises contacting the metal working element with a water-based composition comprising an effective corrosion inhibiting amount of a concentrate comprising: A. 2-heptyl-1-ethoxypropionic acid imidazoline, sodium salt in an amount of at least about 2 wt %; B. triethanolamine is an amount of about 20 to 27 wt %; and C. the triethanolamine salt of a dicarboxylic acid selected from the group consisting of a linear C 8 to C 14 dicarboxylic acid and mixtures thereof in an amount such that the weight ratio of triethanolamine salt to triethanolamine is about 4:8.
Claim 21
Dependent Claim
104 words
In a metal machining process comprising a metal working element, wherein the improvement comprises contacting the metal working element with a water-based composition comprising an effective corrosion inhibiting amount of a concentrate comprising: A. 2-heptyl-1-ethoxypropionic acid imidazoline, sodium salt in an amount of at least about 2 wt %; B. triethanolamine is an amount of about 20 to 27 wt %; and C. the triethanolamine salt of a dicarboxylic acid selected from the group consisting of a linear C 8 to C 14 dicarboxylic acid and mixtures thereof in an amount such that the weight ratio of triethanolamine salt to triethanolamine is about 4:8.
Claim 22
Dependent Claim
15 words
The metal machining process of claim 17 wherein the concentrate additionally comprises a polyethoxylated nonylphenol.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1989-12-22 | 1990-06-23 | 1990-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-22 | 1994-06-23 | 1994-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-22 | 1998-06-23 | 1998-12-23 | $7700.00 | Window Closed / Lapsed |