Defoamer

A bubble is a dispersion of a large amount of insoluble gas (usually air) in a small volume of liquid, forming a heterogeneous system with a significant gas-liquid interface.
In paints and inks, foam mainly arises from:
Air adsorbed by pigment fillers
Reaction bubbles during film solidification
Mechanical air entrapment in production or application
Release of air from porous substrates during coating
Surfactants stabilize foam by preventing film thinning through the Marangoni effect and electrostatic forces. In contrast, defoamers work by being incompatible with the system and having lower surface tension, thereby destabilizing and breaking foam. Common defoamers include mineral oil, organosilicon/fluorosilicone, and non-silicon types.

·PRODUCT

Product	System*	Active component	Solid content	Solvent	Characteristic & Application range
GD-DF55	S	Acrylate copolymer	7%	XYL	• Non-silicon defoamer with excellent compatibility, high safety, and minimal side effects. • Good defoaming performance with high cost-effectiveness. • Suitable for UV coatings, epoxy, saturated polyester systems, etc.; especially for UV coatings without affecting transparency. • Suitable for various solvent-based or solvent-free systems applied by spray or roller coating.
GD-DF52	S	Polyvinyl ether copolymer	30%	High boiling aliphatic hydrocarbon solvent	• Non-silicon defoamer balancing defoaming and compatibility; high safety, good defoaming effect, high cost-effectiveness, minimal side effects. • Suitable for solvent-based or solvent-free systems such as PU, NC, PE, epoxy, etc.; especially for anti-corrosion coatings, wood paints, mixed paints, and general industrial paints.
GD-DF57	S	Polyolefin non-silicon polymers	40%	S-150B	• Non-silicon defoamer balancing defoaming and compatibility; high safety, good defoaming effect, high cost-effectiveness, wide versatility, minimal side effects. • Suitable for various paint and ink systems; especially for roll coating, unsaturated polyester resin systems, high-temperature paints, UV coatings, PE wood paints, and other roller or spray applied solvent-based or solvent-free systems.
GD-DF30A	S	Acrylate copolymer	50%	High boiling aliphatic hydrocarbon solvent	• Non-silicon defoamer with strong bubble suppression, defoaming, and breakage effects for thick-film and high-viscosity systems. • Does not easily cause shrinkage holes; high safety and cost-effectiveness. • Very wide versatility; suitable for PU, NC, PE, epoxy, and other solvent-based or solvent-free systems; especially for wood paints and anti-corrosion coatings.
GD-DF31A	S	Acrylate copolymer	70%	High boiling aliphatic hydrocarbon solvent	• Non-silicon defoamer with strong bubble suppression, defoaming, and breakage effects for thick-film and high-viscosity systems. • Does not easily cause shrinkage holes; high safety and cost-effectiveness. • Very wide versatility; suitable for PU, NC, PE, epoxy, and other solvent-based or solvent-free systems; especially for wood paints and anti-corrosion coatings.
GD-DF02	W	Modified mineral oil and metal soap	100%	/	• Modified mineral oil and metal soap defoamer; broad-spectrum with good anti-foam effect, high safety, and no impact on gloss. • Suitable for interior/exterior latex paints, putties, as well as general waterborne industrial paints and textile paints.
GD-DF90	S/W	Special Modified Non-Silicon Copolymer Solution	38%	BCS	The new generation of non-silicon defoamer has strong versatility, excellent balance between defoamer and compatibility, excellent defoamer effect in a variety of water-based and water-soluble coating systems, and has good compatibility, which is not easy to cause shrinkage, oil running and other phenomena, and the use of silicone defoamer is better. Suitable for waterborne industrial paint, waterborne wood paint, waterborne ink, etc., excellent versatility.

Silicon defoamers

Product	System*	Active component	Solid content	Solvent	Characteristic & Application range
GD-SDF66	S	Fluorocarbon modified silicone	1.2%	2-ethylhexyl acetate	• Fluorine-modified silicone defoamer with strong defoaming ability, high efficiency, good balance of performance and compatibility. • Wide versatility; suitable for various solvent-based and UV coating systems, especially anti-corrosion coatings, mixed paints, industrial paints, and epoxy paints.
GD-SDF68A	S	Fluorocarbon modified silicone	100%	/	• Gas-silicon modified silicone defoamer with strong bubble breaking and suppression; high efficiency. • Effective at very low addition levels; especially suitable for eliminating microbubbles in high-viscosity and solvent-free coatings and inks. • Particularly suitable for 2K epoxy (self-leveling floors, conventional floor coatings, anti-corrosion coatings), unsaturated polyester, polyurethane systems, UV coatings, solvent-based or UV screen printing inks, PCB inks, and other inks.
GD-SDF24	W	Modified polysiloxane and hydrophobic solid	100%	/	• Modified silicone water-based defoamer with excellent defoaming effect and good formulation adaptability; suitable for a wide pH range. • Requires grinding or high-speed dispersion after addition; ideal for roller, brush, or spray applications. • Suitable for waterborne industrial paints, waterborne wood coatings, waterborne inks, etc., especially for water-based universal color pastes. • Effective for defoaming high-viscosity and difficult-to-defoam systems; helps eliminate microbubbles.
GD-SDF25	W	Solution of foam destroying polysiloxanes	30%	Water	• Defoamer emulsion containing hydrophobic particles; suitable for waterborne industrial paints, waterborne wood coatings, waterborne inks, etc. • Strong microbubble elimination; easy to disperse; does not cause film defects. • Excellent compatibility and safety; suitable for addition during paint mixing stage.

Silicon defoamers

Quick Links

Categories

Contact Us