Deinking agent, deinking method, and manufacturing method of recycled paper

摘要

To provide a deinking agent having high expandability and excellent deinking property, a deinking method, and a method for producing recycled paper.SOLUTION: The compound represented by the following formula (1) as the component A and the compound represented by the following formula (2) as the component B are contained, and the mass ratio of the component A to the component B (component A/component B) is 1.5 or more and 20 or less. Deinking agent. R-O-[(PO)(EO)]-H(1)[In the formula (1), Ris an alkyl group or alkenyl group having 12 to 22 carbon atoms, PO is a propyleneoxy group, and m is an average addition mole number of PO group, and is a number of 20 to 50, EO is an ethyleneoxy group, n is an average added mole number of EO group, and the number of 20 or more and 55 or less, and the ratio of m to n (m/n) is 0.5 or more and 2 or less. PO and EO may be block or random, and the order of addition is not limited.] R-O- (EO)-H(2)[In the formula (2), Ris a hydrocarbon group having 7 to 9 carbon atoms, EO is an ethyleneoxy group, and p is an average addition mole number of EO group and is a number of 3 to 10.]SELECTED DRAWING: None