Process for producing molded article

摘要

A process for producing a molded article comprised of polyurethane is provided, comprising the steps of pouring or injecting a liquid molding material into a mold under the condition that the contact angle between the liquid molding material and the inner surface of the mold is adjusted to not more than 30° by applying the surface-treating agent to the inner surface of the mold, and curing the liquid molding material. A surface-treating agent is also provided which reduces the contact angle between the liquid molding material and a flat plate made of the same material as the mold to not more than 30°. when the surface-treating agent is applied to the flat plate and the liquid molding material is dropped thereon.