Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Particulate form
Reexamination Certificate
2003-06-06
2008-07-15
Richter, Johann (Department: 1616)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Particulate form
C424S490000, C424S641000
Reexamination Certificate
active
07399487
ABSTRACT:
Aqueous dispersions comprising microfine metal oxide particles and dispersion auxiliaries, wherein, as dispersion auxiliaries, at least one of the compounds of the general formula (I)in whichM is hydrogen, monovalent or divalent metal cation, ammonium ion, organic amine radical;a is 1, or where M is a divalent metal cation, is ½;X is likewise —OMaor —O—(CpH2pO)q—Rlwhere R1═H, aliphatic hydrocarbon radical having 1-20 carbon atoms, cycloaliphatic hydrocarbon radical having 5 to 8 carbon atoms, optionally substituted aryl radical having 6 to 14 carbon atoms, p=2 to 4, q=0 to 100, —NHR2and/or —NR22where R2═R1or —CO—NH2;Y is O, NR2;A1is ethylene radical, propylene radical, isopropylene radical, butylene radical;m is 10 to 30;n is 0 to 50; andk is 10 to 30, where the summ+k is in the range from 20 to 60, is co-used.
REFERENCES:
patent: 4138477 (1979-02-01), Gaffar
patent: 3941543 (1989-12-01), None
patent: 2206339 (1989-01-01), None
patent: WO 90/06103 (1990-06-01), None
Batz-Sohn Christoph
Brandt Petra
Dietz Thomas
Hasenzahl Steffen
Jenni Klaus
George Konata M
Goldschmidt GmbH
Richter Johann
LandOfFree
High-concentration aqueous dispersions comprising... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High-concentration aqueous dispersions comprising..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-concentration aqueous dispersions comprising... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3962482