Process and apparatus for producing rigid polyurethane foam

Details Process and apparatus for producing rigid polyurethane foam Process and apparatus for producing rigid polyurethane foam

C - Chemistry, Metallurgy

08

L

C08L 75/04 (2006.01) B05B 7/04 (2006.01) B05B 7/24 (2006.01) B05D 1/02 (2006.01) C08G 18/00 (2006.01) C08G 18/08 (2006.01) C08J 7/04 (2006.01) C08J 9/16 (2006.01)

Patent

CA 2503238

The present invention provides an apparatus and a process for producing a rigid polyurethane foam involving spraying a mixture containing at least one isocyanate and at least one isocyanate reactive compound onto a supporting surface through a plurality of flat spray nozzles arranged over the supporting surface such that foam cells in the rigid polyurethane foam have substantially uniform dimensional stability and compressive strength throughout the foam. The rigid polyurethane foams of the invention are useful in a wide range of applications such as roofing, sheathing, metal panels such as used in garage doors and the like.

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