Carboxylic acid modified carbon dioxide co-blown...

Details Carboxylic acid modified carbon dioxide co-blown... Carboxylic acid modified carbon dioxide co-blown...

C - Chemistry, Metallurgy

08

G

403/13

C08G 18/16 (2006.01) C08G 18/09 (2006.01) C08J 9/08 (2006.01) C08J 9/12 (2006.01) C08J 9/14 (2006.01)

Patent

CA 2021417

ABSTRACT Disclosed are rigid polyurethane-polyiso- cyanurate foams prepared from polyisocyanates, polyols, trimer catalysts and a blowing agent mixture comprising (i) a halocarbon, and (ii) an organic carboxylic acid, and, optionally water. The foams have excellent aged K-factor values at fluorocarbon levels reduced by up to 75 percent over prior art materials. 37,338-F

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