Provided is a technique for preparing a composition which after application forms a coating film having excellent properties although the recipe is the same. The technique is a process 1) for producing a composition of the oil-in-water emulsion preparation type which contains an optionally alkyl-modified carboxyvinyl polymer and/or a salt thereof and further contains a nonionic surfactant. The process is characterized by preparing an oil-in-water emulsion at a temperature higher than the cloud point of the nonionic surfactant, cooling the emulsion to or below the cloud point of the nonionic surfactant, then adding a carboxyvinyl polymer, and thereafter neutralizing the carboxyvinyl polymer with an alkali agent.
