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Use of silicone defoamer

Apr 08, 2019

    Silicone defoamers are widely used and applied in erythromycin, lincomycin, avermectin, gentamicin, penicillin, oxytetracycline, tetracycline, tylosin, glutamic acid, and lysine. Used as a defoaming agent in fermentation industries such as lysine, citric acid and xanthan gum. Also used in textiles, printing and dyeing, coatings, dyes, paper, ink, oil fields, sewage treatment and other fields. When used in printing and dyeing, it has good compatibility with the additives in the dyebath, and does not affect the color and color fastness.

    Silicone has been used as a spray defoamer and has been reported in many literatures. The old dyeing process, generally using dimethyl silicone defoamer, can achieve a satisfactory defoaming effect and ensure uniform dyeing. However, the new dyeing process uses a high-temperature and high-pressure machine in which the dyed object is moved by the spraying of the dyeing liquid while being dyed. Although the foam produced can be defoamed by a conventional silicone antifoaming agent, under high temperature and high pressure, a general silicone antifoaming agent produces a film-like precipitate which causes spots on the dyed object. The use of block copolymers overcomes the above disadvantages because these antifoam components are soluble in cold water and insoluble in hot water, so they can act as defoaming agents. However, the defoaming effect of the copolymer defoaming agent alone is not satisfactory. If a certain amount of hazy SiO2 is added to the copolymer, a satisfactory defoaming effect can be obtained, and a uniformly dyed fabric can be produced. . It is used for defoaming in polyester fabric high temperature dyeing process and fermentation process. In addition, it can also be used for defoaming of diethanolamine desulfurization system and defoaming of various oil agents, cutting fluids, antifreeze liquids, water-based inks, etc. It is also suitable for washing the uncured resin after printing in the printing industry. Foam is a representative silicone silicone defoamer with excellent performance and wide application.


Contact:Sharon Song(Sales manager)

Zhejiang Runhe Organosilicone New Material Co.,Ltd(Factory)

Zhejiang Runhe Chemical New Material Co.,Ltd(Exporter)


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