| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for producing latex for dip molding allowing for obtaining latex for dip molding having satisfactory characteristics without causing a production problem such as aggregates and adhesion of scales to a reactor can wall even when monomer concentration is increased. <P>SOLUTION: The method for producing the latex for dip molding for copolymerizing a conjugated diene monomer, an ethylenically unsaturated nitrile monomer, an ethylenically unsaturated acid monomer and a monomer of a specific composition consisting of another ethylenically unsaturated monomer polymerizable with them includes: the steps of (1) initiating a first stage of polymerization using an initial polymerization monomer being a monomer occupying a specific proportion of the total monomers used and containing a specific proportion of the total amount of the ethylenically unsaturated acid monomer used for the polymerization, (2) adding a specific amount of an additional emulsifier to a polymerization system when a polymerization rate of the initial polymerization monomer is within a predetermined range, and (3) performing a second stage of the polymerization by sequentially adding the remaining monomer to the polymerization system after the addition of the emulsifier is completed. <P>COPYRIGHT: (C)2013,JPO&INPIT |
