Poly(ethylene
glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol)
average Mn
~5,800
CAS Number:9003-11-6
Descriptions
Packaging: 1 L in
poly btl
250 mL in poly btl
Physical form : Terminal primary
dihydroxy-functional oligomer.
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.
Properties
vapor density:
>1 (vs air)
vapor pressure: <0.3 mm Hg ( 20 °C)
feed ratio:
20:70:20 (EO:PO:EO)
mol wt average: Mn ~5,800
composition: PEG, 30
wt. %
refractive index: n20/D 1.465
surface tension: 34 dynes/cm,
25 °C, 0.1 wt. % in H2O
viscosity: 350 cP (60 °C,
Brookfield)(lit.)
Fp >230 °F
transition temp: Tm (DSC) 39 °C
(at peak)
cloud point 90 °C (1 wt. % aqueous solution)
density:
1.018 g/mL at 25 °C
HLB: 7 - 9