Claims
- 1. A process for the preparation of betaines having the formula
- R.sup.1 CONH(CH.sub.2).sub.x N.sup..sym. R.sup.2 R.sup.3 (CH.sub.2).sub.y COO.sup..crclbar.
- in which
- R.sup.1 is the alkyl residue of a fatty acid with 6 to 18 carbon atoms,
- R.sup.2 and R.sup.3 are the same or different and represent alkyl residues with 1 to 4 carbon atoms,
- x=2 or 3, and
- y=1, 2, or 3,
- comprising quaternizing fatty acid amides having the formula
- R.sup.1 CONH(CH.sub.2).sub.x NR.sup.2 R.sup.3
- with .omega.-halogenalkylcarboxylic acids having the formula
- X(CH.sub.2).sub.y COOH
- in which X is a halogen residue or salts of said acids in aqueous solution wherein the entire course of the quaternizing reaction is carried out in an alkaline solution having a pH of from 7.5 to 10.5 measured at 98.degree. C.
- 2. The process of claim 1 wherein the pH is from about 8 to 10.
- 3. The process of claim 1 wherein the quaternizing reaction is carried out for at least about 3 hours.
- 4. The process of claim 1 wherein the quaternization reaction is carried out for a period of from about 8 to 10 hours.
- 5. Betaines having the formula
- R.sup.1 CONH(CH.sub.2).sub.x N.sup..sym. R.sup.2 R.sup.3 (CH.sub.2).sub.y COO.sup..crclbar.
- in which
- R.sup.1 is the alkyl residue of a fatty acid with 6 to 18 carbon atoms,
- R.sup.2 and R.sup.3 are the same or different and represent alkyl residues with 1 to 4 carbon atoms,
- x=2 or 3, and
- y=1, 2 or 3,
- produced by the process of claim 1, said betaine being substantially free from fatty acid amide dialkylamine.
- 6. Betaines having the formula
- R.sup.1 CONH(CH.sub.2).sub.x N.sup..sym. R.sup.2 R.sup.3 (CH.sub.2).sub.y COO.sup..crclbar.
- in which
- R.sup.1 is the alkyl residue of a fatty acid with 6 to 18 carbon atoms,
- R.sup.2 and R.sup.3 are the same or different and represent alkyl residues with 1 to 4 carbon atoms,
- x=2 or 3, and
- y=1, 2, or 3,
- produced by the process of claim 1, said betaine being substantially free from fatty acid amide dialkylamine and substantially free from organically bound halogen.
- 7. A cosmetic composition containing a detersive and foaming effective amount of the betaine of claim 5 and a cosmetically acceptable carrier therefor.
- 8. A cosmetic composition containing a detersive and foaming effective amount of the betaine of claim 6 and a cosmetically acceptable carrier therefor.
- 9. The process of claim 1 wherein the pH is from about 8 to 10 and the quaternizing reaction is carried out for at least about 3 hours.
- 10. The process of claim 1 wherein the pH is from about 8 to 10 and the quaternizing reaction is carried out for a period of from about 8 to 10 hours.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2926479 |
Jun 1979 |
DEX |
|
Parent Case Info
This is a continuation of application Ser. No. 158,462 filed June 11, 1980, now abandoned.
US Referenced Citations (4)
Continuations (1)
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Number |
Date |
Country |
Parent |
158462 |
Jun 1980 |
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