You mentioned "Polyether Small Distortion GP-330" which should be "Polyether Defoamer GP-330". According to the Guoli Chemical product database, the full chemical name of this product is C12-14 alcohol polyoxyethylene polyoxypropylene ether (CAS No.: 68439-50-9), with aliases including C12-14 alcohol polyoxyethylene polyoxypropylene ether and fatty alcohol polyether. Its general molecular structure formula is RO(C₂H₄O)x(C₃H₆O)yH, where R represents the C12-14 alkyl chain, with a molecular weight of approximately 3000.
This product is polymerized from fatty alcohol (C12-14) as the initiator, sequentially or simultaneously with ethylene oxide (EO) and propylene oxide (PO), belonging to the polyether class of nonionic surfactants. In product descriptions, it is also commonly referred to as glycerol polypropylene ether or glycerol polyoxypropylene ether, describing its traditional polyether backbone structure. In practice, the hydrophobic group is the C12-14 fatty alcohol segment, and the hydrophilic group is composed of polyoxyethylene (EO) and polyoxypropylene (PO) blocks. By adjusting the EO/PO ratio, it achieves excellent defoaming and foam inhibition performance, with an HLB value as low as about 1, a cloud point ≤20°C, and easy dispersion in aqueous systems to exert foam-breaking effects.
The product appears as a colorless to slightly yellow transparent liquid, exhibiting excellent chemical stability and temperature resistance. It can reliably function in acidic, alkaline, and hard water environments, and is widely used in water-based coatings, adhesives, inks, water treatment, textile printing and dyeing, papermaking, metalworking fluids, and industrial cleaning.
| Parameter | Typical Value/Indicator |
|---|---|
| Chemical Name | C12-14 Alcohol Polyoxyethylene Polyoxypropylene Ether |
| CAS Number | 68439-50-9 |
| Ionic Type | Nonionic |
| General Molecular Formula | RO(C₂H₄O)x(C₃H₆O)yH, R=C12-14 alkyl |
| Molecular Weight | Approximately 3000 |
| Appearance | Colorless to slightly yellow transparent liquid |
| HLB Value | 1 |
| Cloud Point (1% aqueous dispersion) | ≤20°C |
| Hydroxyl Value | 54.5~58.5 mg KOH/g |
| Density (20°C) | 0.85~1.05 g/cm³ |
| Viscosity (25°C) | 300~500 mm²/s |
| pH Value (1% aqueous dispersion) | 5.0~8.0 |
| Active Content | 20%~100% (depending on specification) |
Data source: Guoli Chemical Product Database
GP-330 is a defoamer specifically designed for water-based systems, recommended for use in water-based coatings, adhesives, water-based inks, industrial water treatment, textile printing and dyeing, papermaking, metalworking fluids, and industrial cleaning. The typical dosage is 0.01%~0.5% of the total system weight, which can be added directly or after dilution. The specific dosage should be determined through experiments based on the actual foam conditions of the system.