Modified polyolefin fibrils

The invention relates to polyolefin fibrils which have been modified by means of an oxide, hydroxide or silicate of an element from main group II to IV of the periodic table or a sub-group element. They have a high degree of beating and a large specific surface area and are particularly suitable as...

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Bibliographische Detailangaben
Hauptverfasser:	VOELKER,HEINZ,DR, BONITZ,ECKHARD,DR, BERBNER,HEINZ, DIETER ZETTLER,HANS, SEID,BERNHARD
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	ADHESIVES APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS ARTIFICIAL STONE BLASTING BRAKES CEMENTS CERAMICS CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS CHEMICAL PAINT OR INK REMOVERS CHEMISTRY CLUTCHES COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE CORRECTING FLUIDS COUPLINGS FOR TRANSMITTING ROTATION DYES ENGINEERING ELEMENTS AND UNITS FILLING PASTES GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING IMPREGNATING OR COATING OF PAPER INKS LIGHTING LIME, MAGNESIA MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE MECHANICAL ENGINEERING METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL OR ARTIFICIAL THREADS OR FIBRES NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL POLISHES PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PRODUCTION OF CELLULOSE PULP COMPOSITIONS REFRACTORIES SEPARATION SLAG SPINNING TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP THERMAL INSULATION IN GENERAL TRANSPORTING TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G TREATMENT OF NATURAL STONE USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS USE OF MATERIALS THEREFOR WEAPONS WOODSTAINS
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Beschreibung
Zusammenfassung:	The invention relates to polyolefin fibrils which have been modified by means of an oxide, hydroxide or silicate of an element from main group II to IV of the periodic table or a sub-group element. They have a high degree of beating and a large specific surface area and are particularly suitable as asbestos substitute. They are prepared from solutions of the polyolefins in an organic solvent which contain the admixed modifier, in a process in which the solutions are either a) heated under pressure and cooled under adiabatic relaxation, during which the fibrils are deposited, or b) introduced into a precipitation bath under the action of shear forces, during which the fibrils precipitate.