Claims
- 1. A conductive particle comprising a polymer matrix, carbon black, and a block copolymer, wherein the block copolymer comprises an A block which is miscible with the polymer matrix, and a B block, which anchors to a surface of the carbon black.
- 2. The conductive particle of claim 1, wherein the particle has a number average particle size of from 0.1 to 5 microns.
- 3. The conductive particle of claim 1, wherein the particle has a number average particle size of from 0.1 to 1 micron.
- 4. A conductive carrier comprising carrier particles coated with at least one conductive particle of claim 1.
- 5. A conductive particle formed by a process comprising:
- (a) mixing at least one monomer, carbon black, and a block copolymer, wherein the block copolymer comprises an A block, which is miscible with a polymer of the at least one monomer, and a B block, which anchors to a surface of the carbon black;
- (b) adding a polymerization initiator to the mixture of step (a);
- (c) effecting bulk polymerization of the mixture of step (b) until about 5 to about 30 weight percent of the at least one monomer has been polymerized;
- (d) dispersing the partially polymerized product in water; and
- (e) polymerizing the resulting dispersion.
Parent Case Info
This is a division of application Ser. No. 08/579,107 filed Dec. 27, 1995 now is U.S. Pat. No. 5,747,577
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Divisions (1)
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Number |
Date |
Country |
Parent |
579107 |
Dec 1995 |
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