Dow Global Technolgoies LLC

Michelle Tipps-Thomas

Kaoru Aou

Dwight D Latham

Juan Carlos Medina

Rajesh P Paradkar

A method for exposing a substrate to water under superatmospheric pressure at a temperature of at least 70&#xb0; C. includes (a) applying a reaction mixture to a substrate, which reaction mixture has an isocyanate index of at least 10 and includes an aromatic polyisocyanate component, a polyol component having a polyol with a hydroxyl equivalent weight of at least 500, and a catalyst component having an isocyanate trimerization catalyst, and at least partially curing the reaction mixture to form a polyisocyanurate or polyurethane-isocyanurate polymer having a glass transition temperature of at least 80&#xb0; C., and (b) exposing the substrate and the polyisocyanurate or polyurethane-isocyanurate polymer to water under superatmospheric pressure at a temperature of at least 70&#xb0; C.

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Richwood, TX, United States of America

Michelle Tipps-Thomas