Patents by Inventor Alfar Nicksch

Alfar Nicksch has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Propane-1,3-diol phosphatides and method of preparing the same
    Patent number: 4163748
    Abstract: Propane-1,3-diol phosphatides of the formula ##STR1## are prepared from the corresponding 1-alkanoyl-propanediols by conversion o an intermediate alkanoyl-propanediol-phosphoric acid .beta.-bromoethyl ester with .beta.-bromoethylphosphoric acid dichloride, and amination of the intermediate. They are biodegradable surfactants useful in detergent compositions and as emulsifiers in foods. In the formula, n is an integer and 9 to 25, R.sub.1 and R.sub.2 may be hydrogen or alkyl having up to six carbon atoms, and R.sub.3, R.sub.4, R.sub.5 may be hydrogen or methyl, but at least one of R.sub.3, R.sub.4, and R.sub.5 is hydrogen when R.sub.1 and R.sub.2 are both hydrogen.
    Type: Grant
    Filed: October 31, 1977
    Date of Patent: August 7, 1979
    Assignee: Max-Planck-Gesellschaft zur Forderung der Wissenschaften E.V.
    Inventors: Hansjorg Eibl, Alfar Nicksch
  • Diacylglycerophosphoric acid esters of aminoethanol and methylaminoethanol and method of preparing the same
    Patent number: 3960905
    Abstract: Aminoethyl and methylaminoethyl esters of diacylglycerophosphoric acid in ich the acyl groups are alkanoyl or alkenoyl having 10 to 22 carbon atoms are prepared in good yield by reaction of the corresponding .beta.-bromoethyl esters with ammonia or methylamine base.
    Type: Grant
    Filed: August 28, 1974
    Date of Patent: June 1, 1976
    Assignee: Max-Planck-Gesellschaft zur Forderung der Wissenschaften e.V.
    Inventors: Hansjorg Eibl, Alfar Nicksch
  • 1,2-O-dialkylmethylidene-glycero-3-phosphatides
    Patent number: 3940423
    Abstract: Glycerol is reacted with a ketone having 19 to 35 carbon atoms to 1,2-O-dialkylmethylidene-glycerol which is phosphorylated by means of .beta.-bromoethylphosphoric acid dichloride. The resulting intermediate is aminated with ammonia, methylamine, dimethylamine, or trimethylamine to a compound of the formula ##EQU1## wherein R.sub.1 and R.sub.2 are alkyl having 9 to 17 carbon atoms, and R.sub.3, R.sub.4, and R.sub.5 are hydrogen or methyl. The compounds and their non-toxic acid addition salts are surfactants which may be employed in detergent compositions or as emulsifiers in food.
    Type: Grant
    Filed: August 28, 1974
    Date of Patent: February 24, 1976
    Assignee: Max-Planck-Gesellschaft zur Forderung der Wissenschaften e.V.
    Inventors: Hansjorg Eibl, Alfar Nicksch