Surface Coating / Alfa Chemistry

Poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol), average Mn ~1900

Cat.No ACM9003116-9

Basic Information Description Application Features And Benefits
CAS 9003-11-6
Catalog Number ACM9003116-9
Synonyms PPG-PEG-PPG
Molecular Weight average Mn ~1,900
InChI 1S/C3H6O.C2H4O/c1-3-2-4-3;1-2-3-1/h3H,2H2,1H3;1-2H2
Density 1.06 g/mL at 25 °C
Composition PEG, 50 wt. %
Form Terminal primary dihydroxy-functional oligomer.
MDL Number MFCD00082049
Packaging 250 mL in poly bottle
PubChem ID 24867231
Quality Level 100
Refractive Index n20/D 1.461
Storage Temperature 2-8°C
Vapor Density >1 (vs air)
Vapor Pressure <0.3 mmHg ( 20 °C)
Description PEG-PPG-PEG symmetric triblock copolymer constitutes of poly(ethylene oxide)(PEO) and poly (propylene oxide) (PPO). The unique characteristic of PPO block exhibiting hydrophobicity at temperatures above 288K and solubility in water at temperatures below 288K lead to formation of micelle consisting of PEO-PPO-PEO triblock copolymers. Some studies report that the hydrophobic core contains PPO block and a hydrophilic corona is comprised of PEO block. In 30wt% aqueous solution PEG-PPG-PEG forms a cubic gel phase.
Application Hard and soft surface cleaners, defoamers in coatings and water treatment. Lubricant in metal working, anti-foaming aid and extender for linear and cross-linked polyesters and polyurethanes.
Features And Benefits Surface active material whose properties are dependent on the hydrophilic (EO)/hydrophobic (PO) ratio. High EO content gives better o/w stabilizers.

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