Branched carboxylic acid-modified silicone and release agent composition for die casting containing same

Abstract

Provided is a branched carboxylic acid-modified silicone which has excellent heat resistance when used at high temperatures, has excellent adhesion to a mold, vertical holding properties, and spreadability, even when used in a small amount, and can provide excellent mold releasability, and to provide a mold release agent for die casting containing the same. A branched carboxylic acid-modified silicone, containing in a molecule: 0.1 to 5.0 mass % of structural units expressed by RSiO3/2, R representing a monovalent hydrocarbon group; and 0.5 to 40.0 mass % of structural units expressed by RR′SiO2/2, R representing a monovalent hydrocarbon group and R′ being a carboxylic acid-containing organic group, and a mold release agent composition for die casting containing the branched carboxylic acid-modified silicone (including in the form an oil agent dispersion or an oil-in-water emulsion).

Dependencies are inferred from the claim text.