Encapsulated isocyanurate catalyst

Details Encapsulated isocyanurate catalyst Encapsulated isocyanurate catalyst

C - Chemistry, Metallurgy

08

G

402/182

C08G 18/02 (2006.01) B27D 5/00 (2006.01) C08G 18/10 (2006.01) C08G 18/16 (2006.01)

Patent

CA 1045287

ABSTRACT A one-part, room temperature-latent isocyanate- catalyst system trimerizable to polyisocyanurate is formed comprising an aromatic isocyanate having dispersed through- out liquid microcapsules of a catalyst for isocyanurate formation. The microcapsules have a permeable shell wall essentially of partially polymerized aromatic isocyanates which encapsulates the liquid catalyst at room temperature but on activation of the isocyanate-catalyst system by a suitable force the liquid catalyst permeates the shell wall, mixes with the polyisocyanate and cures the iso- cyanate to a fully cured thermoset isocyanurate material.

207569

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