Engine water absorbing / releasing body, automobile parts provided with the water absorbing / leaving body, and method for producing engine oil absorbing / leaving body

摘要

Problem There is provided a water absorbing and releasing body that absorbs water in engine oil and releases water when the temperature of the engine oil is high in order to maintain the performance of the engine oil, automotive parts including the water absorbing and releasing body, and a method for producing the water absorbing and releasing body for engine oil. Means for solving the problem A water absorbing and releasing body for engine oil including: a water-soluble organic macromolecule (A), a silicate (B), and a dispersant (C) for the silicate. Automotive parts including the water absorbing and releasing body for engine oil. A method for producing a water absorbing and releasing body for engine oil including: a forming step (a) of forming a water absorbing and releasing body including a water-soluble organic macromolecule (A), a silicate (B), a dispersant (C) for the silicate, and at least one solvent selected from the group consisting of water and a water-soluble organic solvent (F).