DISPERSANT POLYMER FOR NON-AQUEOUS SECONDARY BATTERY, COMPOSITION FOR NON-AQUEOUS SECONDARY BATTERY, SHEET FOR ALL-SOLID-STATE SECONDARY BATTERY AND ALL-SOLID-STATE SECONDARY BATTERY, AND MANUFACTURING METHOD OF SHEET FOR ALL-SOLID-STATE SECONDARY BATTERY AND ALL-SOLID-STATE SECONDARY BATTERY

Provided are a dispersant polymer for a non-aqueous secondary battery, which has a constitutional component (X) including a polymerized chain and having a molecular weight of 400 or more, in which a viscosity at a temperature of 25° C. and a shear rate of 1 sis 0.10 to 10,000 Pa·s; a composition for a non-aqueous secondary battery containing the dispersant polymer for a non-aqueous secondary battery; a sheet for an all-solid-state secondary battery and an all-solid-state secondary battery; and a manufacturing method of a sheet for an all-solid-state secondary battery and an all-solid-state secondary battery.