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A new possibility of photostabilization of polymers by keto-enol tautomerizm of some β-dicarbonyls with fluoro (-CF3) group

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Summary

It has been found that β-dicarbonyl compounds such as 1-phenyl-butane-1,3-dione(benzoyl-acetone)and 4,4,4-trifluoro-phenylbutane-1,3-dione (benzoyl-trifluoroacetone) can effectively photostabilize photodegradation of polyisoprene in solutions containing protonic solvents (alcohols). The photostabilization mechanism is due to the photo-enolization reaction, during which absorbed UV radiation is consumed for the proceeding of this reaction. The photostabilization of formulations containing alcohol by β-dicarbonyl compounds, has potential application in the protection of cosmetics against photoageing reaction.

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Authors and Affiliations

  1. Institute of Photographic Chemistry, Academia Sinica, 100101, Beijing, People's Republic of China

    S. K. Wu, Y. F. Chang & Y. Mou

  2. Polymer Research Group, Department of Dental Materials and Technology, Karolinska Institute, Box 4064, S-141 04, Huddinge, Stockholm, Sweden

    J. F. Rabek

  3. Royal Institute of Technology, S-10044, Stockholm, Sweden

    J. F. Rabek

Authors
  1. S. K. Wu
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  2. Y. F. Chang
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  3. Y. Mou
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  4. J. F. Rabek
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Wu, S.K., Chang, Y.F., Mou, Y. et al. A new possibility of photostabilization of polymers by keto-enol tautomerizm of some β-dicarbonyls with fluoro (-CF3) group. Polymer Bulletin 26, 423–427 (1991). https://doi.org/10.1007/BF00302610

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  • DOI: https://doi.org/10.1007/BF00302610

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