Database/Film Forming/Isobutylene/Ethylmaleimide/Hydroxyethylmaleimide Copolymer
100% petroleum · ISO 16128

Is Isobutylene/Ethylmaleimide/Hydroxyethylmaleimide Copolymer natural?

No. Terpolymer of isobutylene and two maleimide monomers, all sourced from petrochemical maleic anhydride and butene feedstocks.

INCI nameIsobutylene/Ethylmaleimide/Hydroxyethylmaleimide Copolymer
CAS283148-39-0
FunctionFilm Forming · Hair Fixing
FeedstockMade by copolymerising isobutylene (from petroleum/natural-gas C4 streams)…

How we scored it

Repeat units: isobutylene (petrochemical C4 olefin) + N-ethylmaleimide + N-hydroxyethylmaleimide (both from petrochemical maleic anhydride); all fragments petrochemical → 0.0.
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

Made by copolymerising isobutylene (from petroleum/natural-gas C4 streams) with N-substituted maleimides derived from petrochemical maleic anhydride. No natural-origin route is used commercially.

In plain English

A film-forming ingredient used in hair styling products to help hold style. Made by polymerising petrochemical isobutylene with two synthetic maleimide building blocks.

CosIng definition: 2-Methylpropene polymer with 1-ethyl-1H-pyrrole-2,5-dione and 1-hydroxyethyl-1H-pyrrole-2,5-dione monomers

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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. 2ISOBUTYLENE/ETHYLMALEIMIDE/HYDROXYETHYLMALEIMIDE COPOLYMER. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  3. 3ISOBUTYLENE/ETHYLMALEIMIDE/HYDROXYETHYLMALEIMIDE COPOLYMER. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=ISOBUTYLENE/ETHYLMALEIMIDE/HYDROXYETHYLMALEIMIDE%20COPOLYMER