What's butylene glycol function in Croda's BTMS-50?

I couldn't find any reference to butylene glycol improving emulsions, but it seems to work as a preservative add-on


Raising preservative efficacy via glycol replacement


But BTMS-25 doesn't contain it, so it ain't used as a pellets preservative.


  • SibechSibech Member, Professional Chemist
    @gunther - According to their patent (US6638497B2), the function of glycols in their strong quats are to reduce the melting point of the mixture, so as to reduce heating time and potential for thermal degradation of the quat.

    Dabbling Formulator — Qualified Cosmetic Safety Assessor — experienced in claim substantiation & EU regulatory affairs.
  • MicroformulationMicroformulation Member, Professional Chemist
    edited May 2019
    Correct. It greatly simplifies the processing.
    markfuller@microformulation.com Microformulation.com Microformulation Cosmetic Consulting provides Custom Formulations for both large Commercial accounts as well as smaller entrepreneurs. We can provide Naturally compliant Formulations under the NSF, NPA, Whole Foods and USDA Organic Certifications. BS.Pharm Albany College of Pharmacy, Union University.
  • GuntherGunther Member
    Interesting, thanks a lot for the answers.
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