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Alcohol based emulsifiers for Emulsifiable Concentrates
”Matched pair” system
Key benefits
The total concentration of the emulsifier blend is normally 5-10% of the formulation.
The optimum ratio of anionic and non-ionic with regards to spontaneous emulsification in water and the stability of the emulsion inrequired temperature and water hardness.
All recipes optimised in accordance with usually works better than single compo-nents and make it easier for the formulator.
HLB value is a theoretically calculatedvalue of the hydrophobic (solubility in oils) and hydrophilic (solubility in water) balanceof a surfactant. The system was introducedin the 1940's and does not cover the newertypes of surfactants.
Water hardness
The formulation suggestions are optimised
for 500 ppm CaCO3 and if a better stabilityis required in soft water, the emulsifier system has to be adjusted to a more hydro- BEROL 9960 : BEROL 9968 1st choice
BEROL 9960 : BEROL 9969 or
BEROL 9927 : BEROL 9969
BEROL 9927 : BEROL 9968
Oil formulations require other emulsifiers,which are much more hydrophobic Temperature
The formulation suggestions are optimised
Our new Alcohol based emulsifier blends
for 30ºC, but if the formulation is to be used could be used alone or in combination as a “matched pair”. They are efficient in both the hydrophilic and hydrophobic pair.
Solvents
With four blends Berol 9927, Berol 9960,
A change of solvent from e.g. xylene to a Berol 9968 and Berol 9969 one can easily
hydrophobic part of the emulsifier system AI
Emu
Em lsifier
l
Stabilizer
Formu
For
l
mu a
l ti
a on
ti
Solv
l e
v nt
n
(g/l)
(g/l)
(g/l)
Alachlor 48 EC
Alpha-Cypermethrin 5 EC
Bifenthrin 10 EC
Chlorpyrifos 20 EC
Chlorpyrifos 20 EC
Chlorpyrifos 20 EC
Chlorpyrifos 45 + Cypermethrin 5 EC
Chlorpyrifos 48 EC
Chlorpyrifos 48 EC
Chlorpyrifos 48 EC
Cypermethrin 5 EC
Cypermethrin 5 EC
Cypermethrin 5 EC
Cypermethrin 5 EC
Cypermethrin 10 EC
Cypermethrin 10 EC
Cypermethrin 10 EC
Cypermethrin 20 EC
Cypermethrin 20 EC
Cypermethrin 20 EC
Cypermethrin 20 EC
Cypermethrin 30 EC
Cypermethrin 30 EC
Cypermethrin 30 EC
Cypermethrin 30 EC
Decamethrin 2.5 EC
2.4-D-Isoctylester
Diazinon 18 EC
Diazinon 60 EC
Diazinon 60 EC
Diazinon 60 EC
Dimethoate 20 EC
Dimethoate 40 EC
Dimethoate 40 EC
Esfenvalerate 2.5 EC
Ethofumesate 20 EC
Ethylparathion 25 EC
Fenitrothion 50 EC
Fenvalerate 10 EC
Fenvalerate 30 EC
Omite 57 EC
Permethrin 10 EC
Permethrin 10 EC
Permethrin 10 EC
Permethrin 10 EC
Permethrin 25 EC
Permethrin 25 EC
Permethrin 25 EC
Akzo Nobel Surface Chemistry AB, 444 85 Stenungsund, Sweden Tel. + 46 303 85 000, Fax + 46 303 84 371

Source: http://vento.com.vn/files/Surfactants/Surfactant%20for%20AG/Alcohol_based_emulsifiers_for_EC.pdf

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