Patents Assigned to Doll GmbH
  • Patent number: 4141968
    Abstract: Novel salts of 1,3-bis-(.beta.-ethylhexyl)-5-amino-5-methyl-hexahydropyrimidine (hexetidine) with substituted benzoic acids and processes of preparing these salts are described. These novel salts have useful bacteriostatic activity and show stability in storage. The invention accordingly comprises compositions containing the novel salts and having bacteriostatic activity.
    Type: Grant
    Filed: November 3, 1976
    Date of Patent: February 27, 1979
    Assignee: Doll GmbH
    Inventors: Wilhelm Kunz, Klaus Posselt, Manfred Lohner
  • Patent number: 4142050
    Abstract: Novel salts of 1,3-bis-(.beta.-ethylhexyl)-5-amino-5-methyl-hexahydropyrimidine (hexetidine) with substituted benzoic acids and processes of preparing these salts are described. These novel salts have useful bacteriostatic activity and show stability in storage. The invention accordingly comprises compositions containing the novel salts and having bacteriostatic activity. The salts are additionally useful for the purification of hexetidine contained in raw mixtures obtained from the synthesis of this compound.
    Type: Grant
    Filed: November 3, 1976
    Date of Patent: February 27, 1979
    Assignee: Doll GmbH
    Inventors: Wilhelm Kunz, Klaus Posselt