Polymeric ammonium compounds as charge control agents

Details Polymeric ammonium compounds as charge control agents Polymeric ammonium compounds as charge control agents

1991-09-17

1993-02-16

Martin, Roland

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Post imaging process, finishing, or perfecting composition...

524904, 525217, 525293, 525540, 525934, G03G 9097

Patent

active

051870380

ABSTRACT:
Use of polymeric ammonium salts which have a molecular weight of about 5000 to about 500,000, and are obtained by homopolymerization of monomers, such as, for example, diallyldialkylammonium chloride, or by copolymerization of mixtures of two monomers, such as, for example, diethyldimethylammonium chloride and diallylmethyloctylammonium chloride, with molar monomer ratios of about 0.5:0.5 to about 0.95:0.05 in the copolymer, and if appropriate subsequent anion exchange, individually or in combination as charge control agents in electrophotographic toners and developers which are employed for copying or duplicating masters and for printing electronically, magnetically or optically stored information or in colorproofing, and as charge control agents in powders and powder coatings.

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patent: 4684596 (1987-08-01), Bonser et al.
patent: 4840863 (1989-06-01), Otsu et al.

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