Method for producing a polyrotaxane

The present invention aims to provide a method for producing a polyrotaxane can be produced polyrotaxane having a high inclusion rate industrially advantageous method. The present invention comprises a cyclodextrin, a compound having a repeating structural unit represented by the through skewered shape to the opening of the cyclodextrin inclusion has been the following formula (1) is represented by Formula (1) are arranged on both ends of the compound having the repeating structural units that a method for producing a polyrotaxane having a blocking group to prevent desorption of the cyclodextrin, a compound having a repeating structural unit represented by the formula (1) a cyclodextrin by mixing in an aqueous medium, pseudopolyrotaxane aqueous compound having a repeating structural unit represented by the formula (1) in the opening of the cyclodextrin molecule contains a pseudopolyrotaxane particles inclusion skewered shape step 1 to obtain a dispersion, a triazine compound represented by the following formula (2), a compound having at least one tertiary amino group, wherein the step Has a pseudopolyrotaxane aqueous dispersion obtained, the sequestering agent are mixed, and a step 2 of introducing blocking groups at both ends of the compound having the repeating structural unit represented by the formula (1) in the pseudo-polyrotaxane in it is a polyrotaxane method of manufacturing. In the formula (2), [Formula 1] [Formula 2]