Sinterable powder prodn. from polymerisable metal carboxylate cpds. - by polymerising homogeneous mixt. and heating, useful for making special ceramics

Sinterable powder prodn. from polymerisable metal carboxylate cpds. - by polymerising homogeneous mixt. and heating, useful for making special ceramics

Prodn. of sinterable powders for special ceramics with partic. electrical and/or mechanical properties comprises (a) homogeneously mixing polymerisable metal carboxylates (I) corresp. to the powder compsn.; (b) polymerising and (c) converting the polymer to the metal oxides by thermal treatment. Pre...

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Bibliographische Detailangaben
Hauptverfasser: SCHOENHERR, SIEGFRIED, DR., O-8030 DRESDEN, DE, GARTNER, ANNE-HEIDE., O-7010 LEIPZIG, DE, WEINER, HEIKO., O-9200 FREIBERG, DE, REETZ, TEJA, DR., O-8021 DRESDEN, DE
Format: Patent
Sprache:eng ; ger
Schlagworte:
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F
CONCRETE
INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OFSOLID INORGANIC COMPOUNDS
INORGANIC CHEMISTRY
LIME, MAGNESIA
METALLURGY
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
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Zusammenfassung:Prodn. of sinterable powders for special ceramics with partic. electrical and/or mechanical properties comprises (a) homogeneously mixing polymerisable metal carboxylates (I) corresp. to the powder compsn.; (b) polymerising and (c) converting the polymer to the metal oxides by thermal treatment. Pref. (II) is dissolved in pref. polar solvents and granulated by spraying. (I) are mixed with comonomers, pref. acrylonitrile, methacrylate esters, styrene etc. and polymerised. USE/ADVANTAGE - Powders with high sintering activity form ceramics useful e.g. for high temp. superconductors, piezoelectric ceramics, thermistors, various solid electrolyte systems and semiconductors. Powders with homogeneously distributed components are obtd. without the cost of pulverisation and mixing. (16pp Dwg.No.1a/8)