Silicone in coating industry - leveling agent
Leveling agent solvent - based coating with leveling agent mainly contains alkyl or phenyl silicone oil and silicone and polyether copolymer. The copolymer of organosilicon and polyether is the most widely used leveling agent at the present stage. Its structure can be the copolymer of polysiloxane and polyoxyethylene (EO) containing methoxy group. It can also be an ABA type organic silicon surfactant, polyether is EO type, containing hydroxyl; It can also be an organosilicone surfactant containing oxypropylene chain (PO). The solution of silicone and polyether copolymer is also a good leveling agent. The amount of leveling agent in solvent-based coating is 0.05% ~ 0.5%.
Part of the solvent-based coating leveling agent can also be used for ultraviolet (UV) curing coating.
Water-based coating with leveling agents are organic silicone and polyether copolymerization of water-soluble silicone oil, their compatibility with organic resin is better than dimethyl silicone oil. The polyether structure can contain EO and PO; Or you could just have EO; It can also be a silicone glycol surfactant with methoxy group, with a surfactant mass fraction of 10% of 2 monobutoxy ethanol solution; And water and oil dual - use leveling agent. Some of the wetting agents used in solvent-based coatings can be used in UV curing coatings. The wetting agent used in waterborne coatings is a non-ionic silicone surfactant that can be used in both water and oil.