| abstract |
(57) [Problem] To provide a copolymer latex excellent in physical properties of coated paper such as dry pick strength and also excellent in operability in a process of producing coated paper. A copolymer latex comprising a specific amount of a conjugated diene, an unsaturated carboxylic acid, vinyl cyanide, and another copolymerizable monomer, wherein a glass transition temperature and a minimum film formation temperature have a specific relational expression. A copolymer latex characterized by satisfying the following. |