IOTA 1852 is a defoaming agent refined in special process by modified polysiloxane which as the main ingredient, aiming at textile, printing and dyeing, pigment, paste and its application and development. Its characteristics are fast defoaming and dispersion, high temperature resistant, alkali resistant, inhibit time is long, high efficiency, less dosage, non-toxic, non-corrosive, difficult demulsification floating oil. It can be applied in all kinds of production and process of textile industry (water system). Before processing and printing technology of textile industry, textile sizing and scouring agent, used in the textile industry and nonwoven industry of propylene acid latex (latex) and pulp/thickener, other need foam control on textile processing, processing and in the process.