Polyurethane Encapsulation

Hi everbody,
I'm looking for a process to encapsulate a catalyst ( TEA - Triethanolamine ) used to react with a NCO group. Thisreaction yield a
polyurethane adhesive and the target is to improve the cure response of the adhesive.
This encapsulated catalyst should be released under pression and temperature.
Does anyone knows such process ?
regards,
Toledo
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