| abstract |
PROBLEM TO BE SOLVED: To provide a method for producing a binder resin for toner capable of efficiently reducing the amount of residual monomer, and to provide a binder resin for toner having a small amount of residual monomer obtained by the production method. SOLUTION: A step (A) in which an addition polymerization resin monomer containing styrene is subjected to an addition polymerization reaction, and a reaction mixture produced in step (A) and water during and / or after step (A), A method for producing a binder resin for toner having a step (B) of mixing at 100 to 300 ° C., wherein the amount of water mixed in the step (B) is 100 parts by weight of the addition polymerization resin monomer. A production method of a binder resin for toner of 0.1 to 50 parts by weight, and in the production method, further, at least one point before, during and after the step (A), a condensation polymerization resin single amount A method for producing a binder resin for toner having a step (C) in which a body is present in the reaction system of step (A) and causing a condensation polymerization reaction, and a binder resin for toner obtained by these production methods. [Selection figure] None |