Claims
- 1. A process for the preparation of a polyoxaalkyl aminoalcohol having the structural formula: ##STR17## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4, which may be identical or different, are each a hydrogen atom or an alkyl radical having from 1 to 4 carbon atoms; R.sub.5 is an alkyl, or phenyl substituted alkyl radical having from 1 to 12 carbon atoms, a cycloalkyl radical having from 3 to 12 carbon atoms, a phenyl, or alkyl substituted phenyl radical with said alkyl substituent having from 1 to 12 carbon atoms; n is an integer ranging from 1 to 9; and m is an integer ranging from 1 to 10; comprising reacting a polyalkylene glycol having the structural formula:
- HO--CHR.sub.1 --CHR.sub.2 --O--CHR.sub.1 --CHR.sub.2 --O).sub.n H
- with a bis(polyoxaalkyl)amine having the structural formula:
- HN--(CHR.sub.3 --CHR.sub.4 --O).sub.m R.sub.5 ].sub.2
- in a molar ratio of polyalkylene glycol to bis(polyoxaalkyl)amine at least 1.5 times in excess of the stoichiometric amount, at a temperature ranging from about 120.degree. to 220.degree. C., and in the presence of a catalytically effective amount of a hydrogenation/dehydrogenation catalyst.
- 2. The process as defined by claim 1, said catalyst being a nickel catalyst.
- 3. The process as defined by claim 2, said catalyst being Raney or Harshaw nickel, and same being present in an amount ranging from 1 to 15% by weight of the amount of the bis(polyoxaalkyl)amine reactant.
- 4. The process as defined by claim 3, said molar ratio excess ranging from 1.5 to 10.
- 5. The process as defined by claim 4, the reaction being conducted in the presence of hydrogen.
- 6. The process as defined by claim 5, the amount of hydrogen ranging from 1 to 10% by weight of the polyalkylene glycol reactant.
Priority Claims (1)
Number |
Date |
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80 18561 |
Aug 1980 |
FRX |
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Parent Case Info
This application is a division of application Ser. No. 296,214, filed Aug. 25, 1981, now U.S. Pat. No. 4,429,160, issued Jan. 31, 1984.
US Referenced Citations (7)
Divisions (1)
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296214 |
Aug 1981 |
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