GB1001283A - Improvements in or relating to sulpho-fatty acids, their salts or other derivatives - Google Patents
Improvements in or relating to sulpho-fatty acids, their salts or other derivativesInfo
- Publication number
- GB1001283A GB1001283A GB1917762A GB1917762A GB1001283A GB 1001283 A GB1001283 A GB 1001283A GB 1917762 A GB1917762 A GB 1917762A GB 1917762 A GB1917762 A GB 1917762A GB 1001283 A GB1001283 A GB 1001283A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- bleaching
- compounds
- sulpho
- sulphur trioxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C303/00—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides
- C07C303/42—Separation; Purification; Stabilisation; Use of additives
- C07C303/44—Separation; Purification
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention comprises a process for bleaching sulpho-fatty acids, esters or nitriles, which compounds (a) have 6 to 28 carbon atoms, (b) are derived from compounds containing no sulphonatable or sulphatable groups other than the hydrogen atom or the acid a -carbon atom, (c) have been prepared by sulphonation using a sulphur trioxide-inert gas mixture in the absence of solvents and (d) contain 0.05 to 1 mole of sulphur trioxide per mole of fatty acid residue, using an aqueous solution or dispersion of an inorganic bleaching agent, which may be prepared in situ, containing such a quantity of water that the sulphuric acid produced by solution of the sulphur trioxide contained in the sulpho-fatty acid is at least 20% by weight sulphuric acid solution and at most a 95% by weight aqueous solution of sulphur trioxide, discounting any water which may be produced by degradation of the bleaching agent. Exemplified sulpho-fatty acids are derived from hydrogenated or hardened tallow fat acid, coconut fat acid, and palm kernel acid, ethyl esters thereof, mixtures of the above, ethyl caprylate, palmitonitrile and palmitic acid. Bleaching agents specified are hydrogen peroxide, compounds which form hydrogen peroxide during the process, for example hydrogen peroxide salts, peroxyhydrates and addition compounds of hydrogen peroxide with organic compounds, and inorganic oxy acids and their salts and anhydrides, or combinations thereof. Bleaching may be effected at 20 DEG to 100 DEG C. Esterification of the sulpho-fatty acid may be effected before or after bleaching. The products may be further bleached after neutralization, optionally as salts. Excess sulphur trioxide in the starting material may be reacted prior to bleaching with compounds having an aliphatic hydroxyl group whose sulphation products have surface-active properties. Specification 1,001,285 is referred to.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1961H0042649 DE1179931C2 (en) | 1961-05-19 | 1961-05-19 | Process for the production of light-colored, capillary-active sulfonic acids from fatty acid esters or their salts |
DEH0044775 | 1962-02-02 | ||
DEH0044949 | 1962-02-21 | ||
DEH0045104 | 1962-03-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1001283A true GB1001283A (en) | 1965-08-11 |
Family
ID=27437020
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1917762A Expired GB1001283A (en) | 1961-05-19 | 1962-05-18 | Improvements in or relating to sulpho-fatty acids, their salts or other derivatives |
Country Status (4)
Country | Link |
---|---|
AT (2) | AT246714B (en) |
BE (1) | BE617770A (en) |
DK (1) | DK123295B (en) |
GB (1) | GB1001283A (en) |
-
1962
- 1962-05-17 DK DK224362A patent/DK123295B/en unknown
- 1962-05-17 BE BE617770A patent/BE617770A/en unknown
- 1962-05-17 AT AT428064A patent/AT246714B/en active
- 1962-05-17 AT AT406362A patent/AT239770B/en active
- 1962-05-18 GB GB1917762A patent/GB1001283A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
AT239770B (en) | 1965-04-26 |
DK123295B (en) | 1972-06-05 |
BE617770A (en) | 1962-11-19 |
AT246714B (en) | 1966-05-10 |
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