Database/Hair Conditioning/Polyurethane-46
100% petroleum · ISO 16128

Is Polyurethane-46 natural?

No. Isophorone diisocyanate, polybutanediol, PEG and methyl diethanolamine are all standard petrochemical building blocks.

INCI namePolyurethane-46
FunctionHair Conditioning
FeedstockManufactured entirely from petrochemical diisocyanate, polyether/polyester polyols and…

How we scored it

Prepolymer of IPDI with poly(butanediol), methoxy-PEG and methyl diethanolamine -- all petrochemical polyols/amine; no natural fragment identified.
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 petrochemical diisocyanate, polyether/polyester polyols and a synthetic amine. No bio-based route is used for this grade.

In plain English

A fully synthetic conditioning polymer for hair products, built from petrochemical diisocyanate and polyol building blocks.

CosIng definition: Polyurethane-46 is a complex urethane-based polymer. Initially, a pre-polymer is made by the reaction of isophorone diisocyanate (IPDI) with three different polyols. The polyols are poly(1,4-butanediol)-30, methoxy PEG-20 terminated with a 2,2 dimethyol butoxy group, and Methyl Diethanolamine .

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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-46. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  3. 3POLYURETHANE-46. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=POLYURETHANE-46