DIBLOCK COPOLYMER, METHOD FOR PRODUCING DIBLOCK COPOLYMER, AND USE OF DIBLOCK COPOLYMER

Provided are a surface treatment agent for powder capable of being used to produce a dispersion superior in dispersibility, fluidity and temporal stability; and a dispersion containing a powder treated with such surface treatment agent for powder. The agent is a diblock copolymer whose main chain is...

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Bibliographische Detailangaben
Hauptverfasser:	HATA, Ryunosuke, IMAI, Taro
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON CORRECTING FLUIDS DYES FILLING PASTES INKS MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING POLISHES PREPARATION OF CARBON BLACK THEIR PREPARATION OR CHEMICAL WORKING-UP 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:	Provided are a surface treatment agent for powder capable of being used to produce a dispersion superior in dispersibility, fluidity and temporal stability; and a dispersion containing a powder treated with such surface treatment agent for powder. The agent is a diblock copolymer whose main chain is comprised of a silicone graft copolymer block represented by a formula [I] and a polar copolymer block represented by a formula [II], wherein one end structure of the main chain is represented by a formula [III], and the other end structure of the main chain is represented by a formula [IV], the formulae [I] to [IV] being expressed aswherein R1 represents a hydrogen atom or a methyl group; A represents an organopolysiloxane-containing group; n1 satisfies 1≤ n1 ≤50; B represents a polar group-containing monovalent hydrocarbon group having 1 to 20 carbon atoms, an amino group or a hydroxyl group; n2 satisfies 1≤ n2≤50; R6 represents an alkyl group having 1 to 4 carbon atoms; each R7 independently represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; X represents the group represented by A in the formula [I] or the group represented by B in the formula [II].