The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 15, 1987
Filed:
Mar. 08, 1985
Manfred Breuninger, Freiburg, DE;
Dieter Schmidt, Basel, CH;
Hoffmann-La Roche Inc., Nutley, NJ (US);
Abstract
Compounds of the general formula ##STR1## wherein two of the residues R.sup.1, R.sup.2 and R.sup.3 represent C.sub.10-30 -alkyl residues with at least 8 C-atoms in a straight chain, at least one of these residues being substituted by at least 2 C.sub.1-3 -alkyl residues and the sum of the C-atoms in the two residues being greater than 20; and the third residue is a residue --P(O)(O.sup.-)OR.sup.4 in which R.sup.4 represents a lower-alkyl or C.sub.5-7 -cycloalkyl residue which is substituted by a quaternary ammonium group or a C.sub.5-7 -cycloalkyl residue which contains a di-(lower-alkyl)-substituted nitrogen atom, are useful for the manufacture of colloidal solution systems. The compounds of formula I can be prepared starting from glycerol derivatives as described in more detail in the specification.