HPEG Polycarboxylate(PCE) Superplasticizer Monomer
✓ HPEG monomer for high-performance PCE production
✓ White to light-yellow water-soluble solid
✓ Hydroxyl value: 21–26 mg KOH/g
✓ Degree of unsaturation: ≥0.390 mol/kg
✓ Supports balanced water reduction and workability
✓ Suitable for redox-initiated synthesis below 60°C
Product Preview
HPEG, also known as methylallyl polyoxyethylene ether, is a water-soluble polyether macromonomer used to manufacture polycarboxylate ether superplasticizers. Its reactive unsaturation enables copolymerization, while the polyoxyethylene chain forms the side-chain structure responsible for steric dispersion in the finished PCE.
HPEG is suitable for PCE formulations targeting a practical balance of water reduction, workability, early-strength response and concrete viscosity. Under an appropriate redox initiation system, synthesis can be conducted below 60°C. Final performance depends on formulation design, conversion, molecular-weight control and cement compatibility.
Product Specifications
| Test Item | Specification |
|---|---|
| Appearance | White / light-yellow solid |
| Hydroxyl value (as KOH) | 21–26 mg/g |
| pH value | 8.0–11.0 |
| Degree of unsaturation | ≥0.390 mol/kg |
High Reactivity for PCE Synthesis
HPEG contains a reactive unsaturated group that can be copolymerized with acrylic monomers to build the PCE backbone and side-chain architecture.
Balanced Concrete Performance Potential
HPEG-based polymers can be designed for a balance of water reduction, slump retention, early strength and manageable concrete viscosity.
Controlled Molecular-Weight Distribution
Appropriate chain-transfer and comonomer design can help regulate molecular weight, supporting consistent workability in the final PCE.
Low-Temperature Process Compatibility
With a suitable redox initiation system, HPEG can be used in synthesis below 60°C, potentially reducing heating demand.
Water-Soluble and Easy to Process
The solid dissolves readily in water, supporting controlled solution preparation and feed during industrial polymerization.
General-Purpose PCE Superplasticizer
HPEG can be used as the main polyether macromonomer for PCEs designed for ready-mix and cast-in-place concrete.
High Water-Reduction Formulations
Optimized molecular structures can provide strong cement dispersion for low water-binder ratio concrete.
Workability-Retaining Formulations
Functional comonomers and molecular-weight control can be used to tune retention for transportation and pumping requirements.
Precast and Early-Strength Concrete
HPEG-based PCEs may be designed for rapid production cycles when early flow and strength development are required.
Low-Viscosity Concrete Systems
Proper polymer design can help manage rheology in high-binder concrete, subject to mix-specific testing.
What is HPEG?
HPEG is methylallyl polyoxyethylene ether, a reactive polyether macromonomer used in polycarboxylate superplasticizer synthesis.
Is HPEG added directly to concrete?
No. It is a raw material used to synthesize the finished PCE polymer.
What does degree of unsaturation indicate?
It reflects the concentration of reactive double bonds available for copolymerization. This HPEG grade specifies at least 0.390 mol/kg.
Can HPEG be synthesized into PCE below 60°C?
Yes, under a suitable redox initiation system. The exact temperature and feed profile must be validated for the selected formulation.
Does HPEG guarantee low concrete viscosity?
No. Viscosity depends on the final polymer design, cementitious system, water-binder ratio and dosage.
How should HPEG be selected against TPEG or EPEG?
Compare required reaction conditions, specifications and target concrete performance. Review TPEG and EPEG, then validate each candidate in the same synthesis and concrete test program.
What quality checks are important?
Verify appearance, hydroxyl value, pH and degree of unsaturation against the agreed specification.
Available packaging includes 25 kg bags and 500 kg bulk bags, with customized options available on request.
Store in a cool, dry and well-ventilated place away from direct sunlight and extreme temperatures. Keep the packaging sealed to prevent moisture contamination. The stated shelf life is one year under suitable storage conditions.
Dissolve HPEG in water according to the validated production formula, then copolymerize it with the selected unsaturated acid monomers under an approved redox initiation and molecular-weight-control system. Suitable processes may operate below 60°C.
Optimize the recipe through laboratory and pilot work. Confirm conversion, residual monomer, solution stability, solids, pH and concrete performance before commercial production.
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