NANOPARTICULATE REDISPERSIBLE ZINC-OXIDE POWDER

• Main Authors: HAHN, HORST, BULTO CARULLA, VICTOR, KLISS, RAINER, ELSAESSER, RALF, KROPF, CHRISTIAN, BERBER, METE
• Format: Patent
• Language: English; French; German
• Published: 14.10.2004
• Edition: 7
• Subjects: ADHESIVES; AGRICULTURE; ANIMAL HUSBANDRY; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES, AS HERBICIDES; CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; DYES; FISHING; FORESTRY; HUMAN NECESSITIES; HUNTING; HYGIENE; INORGANIC CHEMISTRY; MEDICAL OR VETERINARY SCIENCE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS; POLISHES; PREPARATION OF CARBON BLACK; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES; PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTSTHEREOF; SPECIFIC USE OF COSMETICS OR SIMILAR TOILETPREPARATIONS; TRAPPING; TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES

Gegenstand der vorliegenden Erfindung ist ein oberflächenmodifiziertes nanopartikuläres Zinkoxid, das dadurch gekennzeichnet ist, dass die Oberflächenmodifikation eine Beschichtung mit einer organischen Säure der allgemeinen Formel HOOC-R1-(CH2)n-R2­CH3 umfasst, mit R1 = CH2-(O-CH2-H2)m; mit m = 0 bis 11, n = 0 bis 30, wobei wenn m = 0 ist, n grösser als 11 ist und R2 = CH2, CHCH3, C(CH3)2, Phenylen, O, S. The invention relates to a surface-modified nanoparticulate zinc-oxide, characterised in that the surface modification involves the application of a coating consisting of an organic acid of general formula HOOC-R1-(CH2)n-R2-CH3, in which R1 = CH2-(O-CH2-CH2)m, where m = 0 to 11, n = 0 to 30 and whereby if m = 0, n is greater than 11 and R2 = CH2, CHCH3, C(CH3)2, phenylene, O, or S. L'invention concerne un oxyde de zinc nanoparticulaire modifié en surface, caractérisé en ce que cette modification superficielle est réalisée, entre autres, par application d'un acide organique de formule générale : HOOC-R1-(CH2)n-R2-CH3, dans laquelle : R1 représente CH2-(O-CH2-CH2)m ; m est compris entre 0 et 11, et n entre 0 et 30, à condition que, lorsque m est égal à 0, n soit supérieur à 11 ; et R2 représente CH2, CHCH3, C(CH3)2, phénylène, O, S.