US4039460A
Expired / Lapsed
US
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Hydroxyalkyl-aminobutyric acid lubricants for the cold-working of aluminum
Assignee: Henkel AG and Co KGaA
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Filing: 1974-11-06
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Granted: 1977-08-02
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Expires: 1994-11-06
Abstract
Abstract Lubricants for the cold-working of aluminum and aluminum alloys applicable in aqueous solutions consisting of hydroxyalkyl-aminobutyric acids having the formula ##STR1## wherein R' and R" are members selected from the group consisting of hydrogen and alkyl having 1 to 20 carbon atoms with the proviso that the sum of carbon atoms in both R' and R" is from 6 to 20 and only one of R' and R" can be hydrogen; as well as aqueous preparations containing from 0.1 to 10% by weight of the hydroxyalkyl-aminobutyric acids and the method of cold-working aluminum and aluminum alloys employing the said aqueous preparation.
Inventors
- 👤 Karlheinz Koch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:40
CPC Classifications
C; C10; C10M; C10M173/00; C10M173/02; C10M2201/00; C10M2201/02; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10N; C10N2040/00; C10N2040/20; C10N2040/24; C10N2040/241; C10N2040/242; C10N2040/243; C10N2040/244; C10N2040/245; C10N2040/246; C10N2040/247; C10N2050/00; C10N2050/01
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
78 words
A hydroxyalkyl-aminobutyric acid for use in aqueous lubricant preparations in the cold-working of aluminum and aluminum alloys having the formula ##STR8## wherein R' and R" are members selected from the group consisting of hydrogen and alkyl having from 1 to 20 carbon atoms with the proviso that the sum of carbon atoms in both R' and R" is from 6 to 20 and only one of R' and R" can be hydrogen, and mixtures of said hydroxyalkyl-aminobutyric acids.
Claim 2
Dependent Claim
78 words
A hydroxyalkyl-aminobutyric acid for use in aqueous lubricant preparations in the cold-working of aluminum and aluminum alloys having the formula ##STR8## wherein R' and R" are members selected from the group consisting of hydrogen and alkyl having from 1 to 20 carbon atoms with the proviso that the sum of carbon atoms in both R' and R" is from 6 to 20 and only one of R' and R" can be hydrogen, and mixtures of said hydroxyalkyl-aminobutyric acids.
Claim 3
Dependent Claim
13 words
The hydroxyalkyl-aminobutyric acid of claim 1 wherein both R' and R" are alkyl.
Claim 4
Dependent Claim
17 words
The hydroxyalkyl-aminobutyric acid of claim 2 wherein the said acid is derived from a non-terminal hydroxydodecylamine/hydroxytetradecylamine mixture.
Claim 5
Dependent Claim
17 words
The hydroxyalkyl-aminobutyric acid of claim 2 wherein the said acid is derived from a non-terminal hydroxypentadecylamine/hydroxyhexadecylamine mixture.
Claim 6
Dependent Claim
30 words
The hydroxyalkyl-aminobutyric acid of claim 2 wherein the said acid is an approximately 1 to 1 mixture of acids derived from a non-terminal hydroxydodecylamine-hydroxytetradecylamine mixture and a non-terminal hydroxypentadecylamine/hydroxyhexadecylamine mixture.
Claim 7
Dependent Claim
18 words
Aqueous concentrates containing from 45% to 60% by weight of the hydroxyalkyl-aminobutyric acid of claim 1 in water.
Claim 8
Dependent Claim
94 words
An aqueous preparation for use as a lubricant in the cold-working of aluminum and aluminum alloys consisting essentially of water containing from 0.1 to 10% by weight of at least one hydroxyalkyl-aminobutyric acid having the formula ##STR9## wherein R' and R" are members selected from the group consisting of hydrogen and alkyl having from 1 to 20 carbon atoms with the proviso that the sum of carbon atoms in both R' and R" is from 6 to 20 and only one of R' and R" can be hydrogen, and mixtures of said hydroxyalkyl-aminobutyric acids.
Claim 9
Dependent Claim
94 words
An aqueous preparation for use as a lubricant in the cold-working of aluminum and aluminum alloys consisting essentially of water containing from 0.1 to 10% by weight of at least one hydroxyalkyl-aminobutyric acid having the formula ##STR9## wherein R' and R" are members selected from the group consisting of hydrogen and alkyl having from 1 to 20 carbon atoms with the proviso that the sum of carbon atoms in both R' and R" is from 6 to 20 and only one of R' and R" can be hydrogen, and mixtures of said hydroxyalkyl-aminobutyric acids.
Claim 10
Dependent Claim
13 words
The aqueous preparation of claim 7 wherein both R' and R" are alkyl.
Claim 11
Dependent Claim
17 words
The aqueous preparation of claim 8 wherein the said acid is derived from a non-terminal hydroxydodecylamine/hydroxytetradecylamine mixture.
Claim 12
Dependent Claim
17 words
The aqueous preparation of claim 8 wherein the said acid is derived from a non-terminal hydroxypentadecylamine/hydroxyhexadecylamine mixture.
Claim 13
Dependent Claim
30 words
The aqueous preparation of claim 8 wherein the said acid is an approximately 1 to 1 mixture of acids derived from a non-terminal hydroxydodecylamine-hydroxytetradecylamine mixture and a non-terminal hydroxypentadecylamine/hydroxyhexadecylamine mixture.
Claim 14
Dependent Claim
17 words
The aqueous preparation of claim 7 containing from 0.5 to 5% by weight of said hydroxyalkyl-aminobutyric acid.
Claim 15
Dependent Claim
42 words
In the process of cold-working aluminum and aluminum alloys comprising shaping aluminum and aluminum alloys in the cold in the presence of a lubricant and recovering shaped material, the improvement consisting of using the aqueous preparation of claim 7 as said lubricant.
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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) | 1980-08-01 | 1981-01-31 | 1981-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-01 | 1985-01-31 | 1985-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-01 | 1989-01-31 | 1989-08-02 | $7700.00 | Window Closed / Lapsed |