US4347381A
Expired / Lapsed
US
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Method of treating long chain alkyl amines or products derived therefrom
Assignee: Albemarle Corp
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Filing: 1978-01-24
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Granted: 1982-08-31
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Expires: 1998-01-24
Abstract
Abstract The pink color content often produced in products such as amine salts, amine oxides, betaines, quaternary ammonium compounds or other compounds derived from long chain alkyl amines is eliminated by treating the products with trace amounts of a bleaching agent. Heating of the treated amine at relatively low temperatures for a short period of time enhances the effectiveness of the bleaching agent. Long chain alkyl amines having a pink color may be similarly treated.
Inventors
- 👤 Melvin E. Tuvell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:10
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/82; C07C209/84
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
78 words
A process of treating pink colored amine products derived from long chain alkyl amines or pink colored long chain alkyl amines to eliminate the pink color in said amine products or said amines, comprising the step of reacting with said amine products or said amines a color eliminating effective amount of hydrogen peroxide at a temperature of at least about 30° to about 60° C. for a period of at least about 5 minutes to about 30 minutes.
Claim 2
Dependent Claim
78 words
A process of treating pink colored amine products derived from long chain alkyl amines or pink colored long chain alkyl amines to eliminate the pink color in said amine products or said amines, comprising the step of reacting with said amine products or said amines a color eliminating effective amount of hydrogen peroxide at a temperature of at least about 30° to about 60° C. for a period of at least about 5 minutes to about 30 minutes.
Claim 3
Dependent Claim
73 words
A process of treating pink colored amine products derived from long chain alkyl amines or pink colored long chain alkyl amines to eliminate the pink color in said amine products or said amines, comprising the step of reacting said amine products or said amines at a temperature of at least about 30° C. for a period of time of at least about 5 minutes with a color eliminating effective amount of hydrogen peroxide.
Claim 4
Dependent Claim
73 words
A process of treating pink colored amine products derived from long chain alkyl amines or pink colored long chain alkyl amines to eliminate the pink color in said amine products or said amines, comprising the step of reacting said amine products or said amines at a temperature of at least about 30° C. for a period of time of at least about 5 minutes with a color eliminating effective amount of hydrogen peroxide.
Claim 5
Dependent Claim
15 words
The process of claim 2, wherein said reactants are heated up to about 70° C.
Claim 6
Dependent Claim
32 words
The process of claim 2, wherein said long chain alkyl amines are aliphatic hydrocarbon amines having at least one alkyl group of 8 to 22 carbon atoms attached to the amino nitrogen.
Claim 7
Dependent Claim
15 words
The process of claim 2, wherein said long chain alkyl amines are petroleum derived amines.
Claim 8
Dependent Claim
15 words
The process of claim 2, wherein said long chain alkyl amines are alkyl dimethyl amines.
Claim 9
Dependent Claim
25 words
The process of claim 2, wherein said long chain alkyl amines comprise amines of the formula CH.sub.3 (CH.sub.2).sub.n CH.sub.2 N(CH.sub.3).sub.2 where n=10, 12 and 14.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-08-30 | 1986-03-01 | 1986-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-30 | 1990-03-01 | 1990-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-30 | 1994-03-01 | 1994-08-31 | $7700.00 | Window Closed / Lapsed |