Claims
- 1. In the production of derivatives of natural fats and oils that are liquid or flowable, wherein the fat or oil starting material is oxyalkylated at elevated temperatures in the presence of alkaline catalysts with at least one compound containing an epoxide group, and is sulfated, the improvement which comprises employing a starting material comprising at least one C.sub.8 -C.sub.24 fatty acid ester of an aliphatic C.sub.1 -C.sub.5 monoalcohol.
- 2. A process according to claim 1, wherein the material that is oxyalkylated is a C.sub.8 -C.sub.24 fatty acid ester and/or fat that is solid at room temperature or contains solid fractions.
- 3. A process according to claim 1, wherein the oxalkylation products are epoxidized prior to sulfation.
- 4. A process according to claim 1, wherein there is added 5 to 100%-wt epoxide relative to the total of fatty substance.
- 5. A process according to claim 1, wherein for the oxalkylation one or more epoxide group-containing compounds are used, and that during oxalkylation more than one epoxide is employed, the epoxides are added either one after the other or as a mixture.
- 6. A process according to claim 1, wherein the oxalkylation is carried out in the presence of an alkaline catalyst selected from the group consisting of potassium hydroxide or sodium hydroxide or alcoholate and alkali metal salts of fatty acids.
- 7. A process according to claim 1, wherein the oxalkylation is carried out at temperatures in the range from 130.degree. to 200.degree. C.
- 8. A process according to claim 1, wherein the fatty substances used contain free fatty acid.
- 9. A process according to claim 1, wherein the fatty substance used has an iodine value below 100.
- 10. A process according to claim 1, wherein the fatty acid ester is an ester of at least one of methyl, ethyl, isopropyl and isobutyl alcohol.
- 11. A process according to claim 1, wherein the fat is solid or contains solid fractions and is first partially split into monoglycerides and diglycerides.
- 12. A process according to claim 1, wherein the sulfation of the oxalkylation product is carried out in admixture with a hydrocarbon or unsaturated fatty acid, and the resulting reaction products are neutralized.
- 13. A liquid or flowable derivative of natural fats and oils obtained according to the process of claim 1.
- 14. A liquid or flowable derivative of natural fats and oils, obtained according to the process of claim 1 having a light fastness of at least 4, measured after 72 hours, and a heat-yellowing value of at least 3, measured after 24 hours, according to DIN 54004.
- 15. In the fat-liquoring of leather wherein the leather is contacted with a fat-liquoring agent, optionally in combination with other substances having lubricating properties and anionic and/or nonionic emulsifiers, the improvement wherein said fat-liquoring agent comprises a liquid or flowable derivative according to claim 8.
Priority Claims (1)
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Date |
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3826179 |
Aug 1988 |
DEX |
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Parent Case Info
This application is a continuation-in-part of application Ser. No. 758,407, filed Aug. 30, 1991, now abandoned, which is a continuation of application Ser. No. 382,616, filed Jul. 19, 1989, now abandoned, which is a continuation-in-part of application Ser. No. 053,299, filed May 22, 1987 and issued as U.S. Pat. No. 4,897,225 on Jan. 30, 1990.
Continuations (1)
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Date |
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Parent |
382616 |
Jul 1989 |
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Continuation in Parts (2)
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Number |
Date |
Country |
Parent |
758407 |
Aug 1991 |
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Parent |
53299 |
May 1987 |
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