| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a manufacturing method of a copolymer latex for an adhesive, capable of improving productivity of the copolymer latex for the adhesive, while securing adhesive force to a fiber for reinforcing a rubber of the copolymer latex for the adhesive.SOLUTION: First of all, a monomer composition (a) containing an aliphatic conjugated diene monomer of 35 mass% to 75 mass%, a vinylpyridine-based monomer of 5 mass% to 25 mass%, and other monomers which can copolymerize with these of 0 mass% to 60 mass% is emulsion polymerized, and a monomer composition (b) containing the aliphatic conjugated diene monomer of 35 mass% to 75 mass%, the vinylpyridine-based monomer of 5 mass% to 25 mass% and other monomers which can copolymerize with these of 0 mass% to 60 mass% is added to the monomer composition (a) when a polymerization conversion ratio of the monomer composition (a) becomes 30% or more and less than 60%.</p> |
