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Neutralisation of Carbopol - Order of Addition
I am looking to make a hand wash with suspended particles and according to the Lubrizol website, Carbopol ETD 2020 should meet my needs.
I found a couple of shampoo formulas on their website to use as a starting formulation. In one formula the Carbopol is added to water and then neutralised before any thing else is added. In another very similar formula the Carbopol is partially neutralised,the surfactants are added and then the remaining neutralising agent is added.
Does anyone know if there is any advantage to either method? Or can you disperse the carbopol and then add all the other raw materials and neutralise at the end.
I am going to try all of these methods but I am waiting on a new Carbopol sample as my very old lab sample had turned into a rock. I was just hoping someone might be able to share an insight and save me reinventing the wheel.
The basic formula from lubrizol was
Water to 100 %
Carbopol ETD 2020 0.80 %
AMP 0.10 %
SLES (28%) 20.00 %
Lauryl Glucoside 5.00 %
CAPB (30%) 5.00 %
AMP 0.66 %
Dow 1784 Emulsion 4.00 %
Phenonip 0.50 %Thanks for any assistance.
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