Glycol distearate



Dear all,

I am using glycol distearate as a pearlizing agent (SLES, glycol distearate and cocamide DEA). I changed the type of viscosity modifier carbomer to NaCl because it is SLES based product. Do you know why the glycol distearate is not pearlizing after few days in the product without carbomer?

Thank you for your help.

Martina

Comments

  • Did glycol distearate precipitate at the bottom?
    The only thing I can think of is that carbomer helps suspend the EGDS particles from falling down.

    You shouldn't need carbomer to properly pearlize
    so you'd better switch to a pre-made all-in-one pearlizer (like Euperlan) or try Ethylene Glycol MONOstearate, which is reportedly easier to use.

    https://chemistscorner.com/cosmeticsciencetalk/discussion/1277/glycol-distearete-issue-in-surfactant-system
  • Yeah, agree with Gunther. Cold pearl is so easy to use and avoids all the extra heating and melting and combining... just mix it in.
    Design of anti-aging creams, gels, and serums; shampoos; and therapeutic cosmetics. In-house label and box design capability.
  • Thank you for your comments.

    I am using AkypoSal. It is mixture of glycol distearate, SLES and cocamide DEA. Glycol distearate did not precipitate at the bottom. The pearlizing effect just dissapeared after few days. Any other idea? :)
  • Check your pH as well,  have seen many times in lab lower pH enhancing the pearl effect. 
  • Without knowing exactly what you are pearlising I can't advise further, sorry.
    Design of anti-aging creams, gels, and serums; shampoos; and therapeutic cosmetics. In-house label and box design capability.
  • It is liquid laundry detergent with pH 8,5. The same pH with nice pearlizing effect and without it. We are using SLES, cocamidopropyl betaine, potassium soap, lauryl glucoside, ethoxylated alcohol, enzymes, parfume, preservative.
  • akyposal ( and the other pearling agents as well ) often 'disappears' when the temperature during the process is above 50-60 degrees....is that a possibility? Furthermore, for proper pearling effect we used to use at around 1% of pearling agent.




  • IMO SLES and CAPB may be too foaming for clothes washing, especially for machine washers which may not fully rinse all foam out.

    You can try some extra chelator (EDTA if you can use it), Sodium citrate or citric acid, than in personal cleaners.

    You may wish to add a sulfonate
    https://en.wikipedia.org/wiki/Alkylbenzene_sulfonates
    If you do it yourself neutralizing a sulfonic acid, Potassium hydroxide yields better results than Sodium hydroxide does. Be careful and wear protective gear. Be especially careful when diluting Potassium hydroxide, it heats itself.

    You can try Sodium Lauryl Sulfate instead or besides SLS, for better cleaning.

    https://www.happi.com/contents/view_features/2012-04-02/formulating-liquid-laundry-detergents
  • Chelants and enzymes together is a big no, in fact you need to feed extra calcium in salt form to keep them active. Also the temperature is a very critical point to be considered. Ratio of nonionics to anionics will play a role too. Novozymes has good information for such systems. 
  • Thank you for your comments. We do not heat the mixture during the production. I tried different mixtures of pearlizing agents with no result.
  • I agree with Gunther, this sounds really foamy for most washing machines... have you tried taking out the potassium soap? I would suspect this might be the problem 
  • @Gene the soap acts as a defoamer in such laundry detergents. 
  • Enzymes can act as catalysts and hydrolyse esthers. It's the first thing i'd knock out. 
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