Resin binder for toner composition

Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...

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430105, 524435, G03G 900, C08K 310

Patent

active

051549999

ABSTRACT:
A novel resin is produced by the step of polymerizing (a) styrene and/or a derivative thereof, (b) a monomer component selected, alone or in combination of two or more, from the group consisting of methacrylic acid, acrylic acid, a methacrylic ester and an acrylic ester, and (c) 0.05 to 10 percent by weight, based on the total weight of the monomers, of a polybasic acid having 7 to 40 carbon atoms, an anhydride thereof or a lower (C1 to C6) alkyl ester thereof, the monomer component (b) containing at least one acrylic or methacrylic ester having hydroxyl or epoxy group in at least equimolar amount to the component (c) and has a softening point of 100.degree. to 160.degree. C. and a glass transition temperature of 50.degree. C. or higher. It is useful as a binder resin for a toner composition.

REFERENCES:
patent: 3442873 (1969-05-01), Nesta
patent: 4302562 (1981-11-01), Becha et al.
patent: 4304695 (1981-12-01), Hohlein et al.
patent: 4362803 (1982-12-01), Miyakawa et al.

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