Database/Film Forming/Polyurethane-26
100% petroleum · ISO 16128

Is Polyurethane-26 natural?

No. Fluorinated polyether backbone, isocyanate, synthetic amino-diol and 2-ethylhexanol cap are all petrochemical/fluorochemical; nothing natural remains.

INCI namePolyurethane-26
CAS328389-90-8
FunctionFilm Forming · Hair Conditioning
FeedstockManufactured entirely from fluorochemical and petrochemical intermediates: a…

How we scored it

All monomers synthetic: perfluoropolyether, IPDI, diethylaminopropanediol, 2-ethylhexanol cap, acetic acid neutralizer; no natural-origin fragment.
What counts. ISO 16128-2 scores the atoms that remain in the final ingredient. Reagents, solvents, catalysts and protecting groups used during manufacture leave no mass behind and are not counted.

Where it comes from

Manufactured entirely from fluorochemical and petrochemical intermediates: a perfluoropolyether, isophorone diisocyanate, a synthetic amino-diol, and 2-ethylhexanol. No natural-origin route exists for this specialty polymer.

In plain English

A film-forming polymer built entirely from synthetic petroleum- and fluorine-based ingredients. It forms a coating on hair or skin used in conditioning and protective products.

CosIng definition: Polyurethane-26 is a complex polymer that is formed by the reaction of Polyperfluoroethoxymethoxy Difluorohydroxyethyl Ether and isophorone diisocyanate (IPDI) to form a prepolymer. The prepolymer is further reacted with 3-diethylamino-1,2-propanediol followed by the capping of any residual isocyanate groups with 2-ethyl-1-hexanol. The resulting polymer is neutralized with acetic acid

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References

  1. 1ISO 16128-1:2016 and ISO 16128-2:2017 — Guidelines on technical definitions and criteria for natural and organic cosmetic ingredients and products. ISO, Geneva.
  2. 2POLYURETHANE-26. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  3. 3POLYURETHANE-26. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=POLYURETHANE-26