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公开(公告)号：CA2143889A1
公开(公告)日：1995-10-12
申请号：CA2143889
申请日：1995-03-03
Applicant: XEROX CORP
Inventor： MAHABADI HADI K , WRIGHT DENISE Y , CUNNINGHAM MICHAEL F , CREATURA JOHN A
Abstract: A process for the preparation of conductive polymeric particles with linear and crosslinked portions, which comprises mixing a monomer with at least one conductive filler, solvent, at least one polymerization initiator, and a chain transfer component; effecting solution polymerization by heating until from about 80 to about 100 weight percent of the monomer has been polymerized; drying the mixture by removing the solvent to yield an intimate blend of polymer with conductive filler; dispersing the aforementioned blend of polymer and conductive filler in at least one monomer with at least one polymerization initiator, a crosslinking agent and a chain transfer agent to form an organic phase; dispersing the resulting organic phase mixture in water containing a stabilizing component to obtain a suspension of particles with an average volume diameter of from about 0.05 to about 5 microns in water; polymerizing the resulting suspension by heating; and subsequently optionally washing and drying the polymeric product.
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Patent Agency Ranking
公开(公告)号：CA2143889C
公开(公告)日：1999-03-23
申请号：CA2143889
申请日：1995-03-03
Applicant: XEROX CORP
Inventor： MAHABADI HADI K , WRIGHT DENISE Y , CUNNINGHAM MICHAEL F , CREATURA JOHN A
Abstract: A process for the preparation of conductive polymeric particles with linear and crosslinked portions, which comprises mixing a monomer with at least one conductive filler, solvent, at least one polymerization initiator, and a chain transfer component; effecting solution polymerization by heating until from about 80 to about 100 weight percent of the monomer has been polymerized; drying the mixture by removing the solvent to yield an intimate blend of polymer with conductive filler; dispersing the aforementioned blend of polymer and conductive filler in at least one monomer with at least one polymerization initiator, a crosslinking agent and a chain transfer agent to form an organic phase; dispersing the resulting organic phase mixture in water containing a stabilizing component to obtain a suspension of particles with an average volume diameter of from about 0.05 to about 5 microns in water; polymerizing the resulting suspension by heating; and subsequently optionally washing and drying the polymeric product.
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公开(公告)号：DE69500277D1
公开(公告)日：1997-06-12
申请号：DE69500277
申请日：1995-04-11
Applicant: XEROX CORP
Inventor： MAHABADI HADI K , WRIGHT DENISE Y , CUNNINGHAM MICHAEL F , CREATURA JOHN A
Abstract: A process for the preparation of conductive polymeric particles with linear and crosslinked portions, which comprises mixing a monomer with at least one conductive filler, solvent, at least one polymerization initiator, and a chain transfer component; effecting solution polymerization by heating until from about 80 to about 100 weight percent of the monomer has been polymerized; drying the mixture by removing the solvent to yield an intimate blend of polymer with conductive filler; dispersing the aforementioned blend of polymer and conductive filler in at least one monomer with at least one polymerization initiator, a crosslinking agent and a chain transfer agent to form an organic phase; dispersing the resulting organic phase mixture in water containing a stabilizing component to obtain a suspension of particles with an average volume diameter of from about 0.05 to about 5 microns in water; polymerizing the resulting suspension by heating; and subsequently optionally washing and drying the polymeric product.
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公开(公告)号：DE69500277T2
公开(公告)日：1997-11-20
申请号：DE69500277
申请日：1995-04-11
Applicant: XEROX CORP
Inventor： MAHABADI HADI K , WRIGHT DENISE Y , CUNNINGHAM MICHAEL F , CREATURA JOHN A
Abstract: A process for the preparation of conductive polymeric particles with linear and crosslinked portions, which comprises mixing a monomer with at least one conductive filler, solvent, at least one polymerization initiator, and a chain transfer component; effecting solution polymerization by heating until from about 80 to about 100 weight percent of the monomer has been polymerized; drying the mixture by removing the solvent to yield an intimate blend of polymer with conductive filler; dispersing the aforementioned blend of polymer and conductive filler in at least one monomer with at least one polymerization initiator, a crosslinking agent and a chain transfer agent to form an organic phase; dispersing the resulting organic phase mixture in water containing a stabilizing component to obtain a suspension of particles with an average volume diameter of from about 0.05 to about 5 microns in water; polymerizing the resulting suspension by heating; and subsequently optionally washing and drying the polymeric product.
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公开(公告)号：GB2261436B
公开(公告)日：1996-04-03
申请号：GB9221983
申请日：1992-10-20
Applicant: XEROX CORP
Inventor： MAHABADI HADI K , WRIGHT DENISE Y , HWEE NG T , BARBETTA ANGELO J , CREATURA JOHN A
Abstract: A process for the preparation of conductive submicron polymeric particles which comprises mixing at least one monomer with a polymerization initiator, a crosslinking component and a chain transfer component; effecting bulk polymerization until from about 10 to about 50 weight percent of the monomer has been polymerized; terminating polymerization by cooling the partially polymerized monomer; adding thereto from about 1 to about 50 weight percent of a conductive filler, or conductive fillers, followed by mixing thereof; dispersing the aforementioned mixture of conductive filler or fillers, and partially polymerized product in water containing a stabilizing component to obtain a suspension of particles with an average diameter of from about 0.05 to about 1 micron in water; polymerizing the resulting suspension by heating; and subsequently washing and drying the product.
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公开(公告)号：GB2261436A
公开(公告)日：1993-05-19
申请号：GB9221983
申请日：1992-10-20
Applicant: XEROX CORP
Inventor： MAHABADI HADI K , WRIGHT DENISE Y , HWEE NG T , BARBETTA ANGELO J , CREATURA JOHN A
Abstract: A process for the preparation of conductive submicron polymeric particles which comprises mixing at least one monomer with a polymerization initiator, a crosslinking component and a chain transfer component; effecting bulk polymerization until from about 10 to about 50 weight percent of the monomer has been polymerized; terminating polymerization by cooling the partially polymerized monomer; adding thereto from about 1 to about 50 weight percent of a conductive filler, or conductive fillers, followed by mixing thereof; dispersing the aforementioned mixture of conductive filler or fillers, and partially polymerized product in water containing a stabilizing component to obtain a suspension of particles with an average diameter of from about 0.05 to about 1 micron in water; polymerizing the resulting suspension by heating; and subsequently washing and drying the product. The process is characterised by the use of a conductive filler which may be carbon black, metal oxides such as iron oxides, stannic oxide or titanium oxide or a metal such as iron. The particles can be used as carrier powder coatings for developer compositions useful in electrophotographic imaging processes.
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