Insulation boards and methods for their manufacture

Details Insulation boards and methods for their manufacture Insulation boards and methods for their manufacture

C - Chemistry, Metallurgy

08

G

C08G 18/72 (2006.01) C08J 9/228 (2006.01) E04B 1/74 (2006.01)

Patent

CA 2436547

A method of manufacturing a polyisocyanurate foam insulation board, the method comprising contacting a stream of reactants that comprise an isocyanate-reactive compound with a stream of reactants that include an isocyanate compound to form a reaction product, where the step of contacting takes place in the presence of a blowing agent and a low-boiling inert gas, and where the amount of low-boiling inert gas present at the time of the contacting is sufficient to result in frothing of the reaction product.

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