HPEP 870 EO/PO 3/1 Methallyl Polyethylene Glycol Polypropylene Glycol
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Molecular Formula: CH₂=C(CH₃)CH₂O(C₂H₄O)ₙ(C₃H₆O)ₘH
CAS Number:31497-33-3
Molecular Weight: 870 g/mol
EO/PO Ratio: 3:1 (ethylene oxide/propylene oxide)
Technical specification:
Appearance(25°C) | Colorless to slightly yellow viscous liquid or solid |
Molecrlar weight | 870 ± 20 g/mol |
EO/PO Ratio | 3:1 |
Methallyl Group Content | >95% (high reactivity) |
| Hydroxyl Value | Specific to grade (typically 60-70 mg KOH/g) |
| Water Content | <0.5% |
| Acid Value | <0.1 mg KOH/g |
Product Description:
HPEP 870 is a methallyl-terminated block copolymer composed of polyethylene glycol (PEG) and polypropylene glycol (PPG) segments. This nonionic surfactant features a reactive methallyl group at one end and a hydroxyl group at the other, making it suitable for various industrial applications requiring both hydrophilic and hydrophobic properties.
Typical Properties & Applications:
Properties: Products with this structure are typically liquids, and their physical properties (like solubility, viscosity, and surface activity) depend on the values of n and m and the EO/PO ratio. They often function as surfactants, emulsifiers, or dispersants.
Applications:
1. Silicone Industry
Primary raw material for silicone leveling agents and defoamers
Imparts excellent wetting and spreading properties to silicone formulations
Enhances compatibility between silicone and other components
2. Concrete Additives
Key monomer for synthesizing high-performance polycarboxylate superplasticizers