METHOD FOR MANUFACTURING COMPOSITE BODY AND COMPOSITION

摘要

Provided is a method for manufacturing a composite body, the method containing: a composition preparation process of preparing a composition that contains a polymer having a cationic functional group and having a weight average molecular weight of from 2,000 to 1,000,000, and that has a pH of from 2.0 to 11.0; a composite member preparation process of preparing a composite member that includes a member A and a member B, a surface of the member B having an isoelectric point that is lower than an isoelectric point of a surface of the member A by 2.0 or more and the isoelectric point of the member B being from 1.0 to 7.5, and that satisfies a relationship: the isoelectric point of a surface of the member B < the pH of the composition < the isoelectric point of a surface of the member A; and an application process of applying the composition to the surface of the member A and the surface of the member B included in the composite member.