Polymer, composition, piezoelectric composite material, piezoelectric film and piezoelectric element

Abstract

The present invention provides a polymer which has a small change in relative permittivity before and after exposure to a high-temperature and high-humidity environment, and is capable of forming a film having few wrinkles; a composition; a piezoelectric composite material; a piezoelectric film; and a piezoelectric element. The polymer of an embodiment of the present invention is a polymer including a repeating unit represented by Formula (A) and a repeating unit represented by Formula (B), in which a content of the repeating unit represented by Formula (A) is 60% by mole or more with respect to all repeating units of the polymer, a content of the repeating unit represented by Formula (B) is 1% to 40% by mole with respect to all repeating units of the polymer, and the polymer includes no repeating unit represented by Formula (C), or in a case where the polymer includes the repeating unit represented by Formula (C), a content of the repeating unit represented by Formula (C) is 5% by mole or less with respect to all repeating units of the polymer.

Dependencies are inferred from the claim text.