Composition, surface treatment agent, article, and method for manufacturing article

Abstract

A composition and the like capable of forming a surface-treated layer with excellent liquid repellency and excellent durability are provided. A composition comprises: a first compound having an organo (poly) siloxane residue, an alkylene chain comprising three or more carbon atoms, and a reactive silyl group a; and a second compound having: a hydrocarbon group comprising four or more carbon atoms, which has no organo (poly) siloxane residue and may have a functional group or a substituent; and a reactive silyl group b, wherein the composition satisfies Requirements (1) and (2) shown below: Requirement (1): in the first compound, one reactive silyl group a is connected to at least one of ends of the organo (poly) siloxane residue; and Requirement (2): in the second compound, one reactive silyl group b is connected to at least one of ends of the hydrocarbon group.

Dependencies are inferred from the claim text.