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Release Coatings


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Tin Catalyst

Tin-catalyzed condensation-cure chemistry offers important advantages:

  • The catalyst is relatively inexpensive.
  • The coating is very robust, resistant both to substrate inhibition and catalyst poisoning.
  • There is little adhesive interaction.

 

There are some drawbacks to this cure chemistry:

  • The necessity for post-cure often rules out two-sided and in-line applications.
  • Blocking can occur. This is the tendency of a liner coated on both sides to bond to itself during storage.
  • There is greater potential for silicone migration.
  • Tin and rubber are mildly interactive, which makes tin-catalyzed coatings less desirable with SBR adhesives.

 

Tin-catalyzed coatings have been successfully applied to emulsion based delivery systems.

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Release Coating

  1. Cure Chemistries


  2. Platinum


  3. Rhodium Catalyst


  4. Tin Catalyst


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