EOPo Block Copolymers
What is EO/PO Block Copolymers?
EO/PO block copolymers (EOPo) are nonionic surfactants made by reacting ethylene oxide and propylene oxide with an alcohol or other starter; they offer wetting, dispersing, and low-foam performance.
What is EO/PO Block Copolymers used for?
EOPo block copolymers are used in detergents and cleaners; in personal care emulsions; in industrial wetting and dispersing; and in low-foam nonionic surfactant formulations. Venus Ethoxyethers manufactures and supplies in India; request a quote for your requirements.
EO/PO block copolymers are nonionic surfactants produced by sequential or random addition of ethylene oxide (EO) and propylene oxide (PO) to an alcohol or amine initiator. The resulting polyether blocks create tunable hydrophilic–lipophilic balance, cloud points, and foam profiles unmatched by simple alcohol ethoxylates—making them essential in low-foam detergents, defoamers, wetting agents, and dispersants.
Block structure and solubility
In typical EO–PO block architectures, hydrophobic PO segments anchor at interfaces while hydrophilic EO segments confer water solubility. Products with limited water solubility and cloud points below 50 °C are favoured where rapid wetting and foam suppression are required. Reversing block order or adjusting EO:PO ratio shifts performance from dispersant to emulsifier behaviour.
Key applications
EO/PO block copolymers serve metal cleaning, paper processing, textile scouring, hydraulic fluids, cement grinding aids, and institutional low-foam cleaners. They wet hard surfaces rapidly, disperse pigments, and collapse foam generated by other surfactants. In combination with fatty alcohol ethoxylates, they balance detergency and foam control in automatic dishwash and machine warewash formulas.
Custom manufacturing
Venus manufactures a wide range of EO/PO block copolymers to customer specifications—including molecular weight, block ratio, and cloud point targets. Below is a tentative list of standard products; bespoke grades are available on request.
Read the EO/PO block copolymers guide for formulation examples, or contact Venus Ethoxyethers for technical data sheets and application support.
Cloud point and temperature stability
Cloud point indicates the temperature at which an EO/PO copolymer becomes insoluble and is a key selector for high-temperature cleaning and low-foam wetting. Venus manufactures grades across a wide cloud-point range and can match historical reference products for reformulation projects.
- Tridecyl Alcohol EO/PO
- Lauryl Alcohol EO/PO
- Decyl Alcohol EO/PO
- Oleyl Cetyl Alcohol EO/PO
- Oleyl Alcohol EO/PO
- Stearyl Alcohol EO/PO
- Glycerol based Polyol (Mol. Wt. 4800)
- Butanol EO/PO Copolymer (random) Mol. Wt. 1450
- Butanol EO/PO Copolymer (random) Mol Wt. 1650
- Butanol EO/PO Copolymer (random) Mol. Wt. 4000
- Aminopolyol (N,N,N,N tetrakis-2-hydroxypropyl ethylenediamine)
- Bisphenol A-2 Mole PO
- Castor Oil EO/PO
- Nonyl Phenol EO/PO
- Polyoxyethylene Polyoxypropylene (30) polymer, 40% EO (L-64 equivalent)
- Polyoxyethylene Polyoxypropylene (30) polymer, 10% EO (L-61 equivalent)
- Polyoxyethylene Polyoxypropylene (30) polymer, 20% EO (L-62 equivalent)
- Polyoxyethylene Polyoxypropylene (39) polymer, 40% EO (P-84 equivalent)
- Polyoxyethylene Polyoxypropylene (39) Polymer, 50% EO (P - 85 Equivalent)
- Polyoxyethylene Polyoxypropylene Polymer Mol.Wt. 3150 (25 R2 Equivalent)
- Polyoxyethylene Polyoxypropylene Polymer Mol.Wt. 2150 (17 R2 Equivalent)
- Polyoxyethylene Polyoxypropylene (56) Polymer, 80% EO (L-68 Equivalent)
- Polyoxyethylene Polyoxypropylene (30) Polymer, 80% EO (F-108 Equivalent)
- Polyoxyethylene Polyoxypropylene Polymer, Mol Wt 3800 (L-101 Equivalent)
- Polyoxyethylene Polyoxypropylene Polymer, Mol Wt 1100 (L-31)
- Polyoxyethylene Polyoxypropylene Polymer, Mol Wt 5000 (F-38)
- Polyoxyethylene Polyoxypropylene Polymer, Mol Wt 2200 (L-44)
- Polyoxyethylene Polyoxypropylene Polymer, Mol Wt 2750 (L-81)
- Polyoxyethylene Polyoxypropylene Polymer, Mol Wt 2650 (17R4)
- Polyoxyethylene Polyoxypropylene Polymer, Mol Wt 3600 (25R4)
- Polyoxyethylene Polyoxypropylene Polymer, Mol Wt 7700 (F-87)
- Polyoxyethylene Polyoxypropylene Polymer, Mol Wt 12600 (F-127)
- Polyoxyethylene Polyoxypropylene Polymer, Mol Wt 4600 (P-94)
- Polyoxyethylene Polyoxypropylene Polymer, Mol Wt 10800 (F-88)
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