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Latent and delayed action polymerization systems.

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Latent polymerization uses external triggers like light or heat for controlled polymer synthesis. This review covers diverse polymers and initiating systems, highlighting scientific challenges and applications.

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Area of Science:

  • Polymer Chemistry
  • Materials Science

Background:

  • Latent polymerization offers controlled initiation for advanced material synthesis.
  • Diverse polymer classes require tailored initiation strategies.

Purpose of the Study:

  • To review recent advances in latent polymerization processes.
  • To categorize different latent initiating systems and their activation methods.

Main Methods:

  • Discussion organized by polymer classes (polyurethanes, polyesters, etc.).
  • Focus on metal-containing and organic initiating systems.
  • Exploration of activation triggers: light, heat, mechanical force.

Main Results:

  • Detailed overview of masked N-heterocyclic carbenes, latent metathesis catalysts, and photolatent radical initiators.
  • Coverage of various polymer types including polyurethanes, polyamides, polyesters, polyacrylates, epoxy resins, and metathesis-derived polymers.
  • Identification of chemical strategies for achieving true latency.

Conclusions:

  • Latent polymerization provides significant advantages in material design and processing.
  • Ongoing research addresses scientific challenges for broader applications.