JPS5186796

JPS5186796

1527760 Stabilization of chromium dioxide BASF AG 17 Dec 1975 [18 Dec 1974 1 Sept 1975] 51568/75 Heading C1A Magnetic chromium dioxide particles are suspended in an aqueous and/or alcoholic medium containing the compound R n SI(OR1) 4-n or a hydrolysis product thereof (wherein R is organic of 1-18 C...

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Hauptverfasser: EZUARUTO SHENAFUINGERU, KURAUSU DEIITORIHI ZAIRERU, YURUGEN AMORUTO, PAURU DAIKUNERU, OTSUTOO AMUPUR, DEIITERU SHEEFUERU, HAINTSU NESUTORERU, EEBERUHARUTO KESUTERU, UERUNERU SHUTSUMUPUFUI, MANFUREETO OORINGERU
Format: Patent
Sprache:eng
Schlagworte:
ADHESIVES
BASIC ELECTRIC ELEMENTS
CHEMICAL PAINT OR INK REMOVERS
CHEMISTRY
COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS
CORRECTING FLUIDS
DYES
ELECTRICITY
FILLING PASTES
INDUCTANCES
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
INKS
MAGNETS
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
PASTES OR SOLIDS FOR COLOURING OR PRINTING
PHYSICS
POLISHES
PREPARATION OF CARBON BLACK
SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
TRANSFORMERS
TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES
USE OF MATERIALS THEREFOR
WOODSTAINS
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Beschreibung
Zusammenfassung:1527760 Stabilization of chromium dioxide BASF AG 17 Dec 1975 [18 Dec 1974 1 Sept 1975] 51568/75 Heading C1A Magnetic chromium dioxide particles are suspended in an aqueous and/or alcoholic medium containing the compound R n SI(OR1) 4-n or a hydrolysis product thereof (wherein R is organic of 1-18 C, R' is aliphatic either with 1-8 C in an uninterrupted chain or with 1-10 C in a chain interrupted by oxygen and n is 1, 2 or 3) and are subsequently isolated with a coating of an at least partial hydrolysis product of the silane and dried at 50-200‹ C. Silanes exemplified are isobutyl-, vinyl-, y-methacryloxypropyl, and y-glycidyloxypropyltrimethoxy- and n-propyltrimethoxy-silanes. An acid or base may be added to ensure hydrolysis. The dried product may be heated at 70-200‹ C. before processing into magnetic recording media.