Process for producing shaped phenolic foams

Details Process for producing shaped phenolic foams Process for producing shaped phenolic foams

C - Chemistry, Metallurgy

08

J

C08J 9/04 (2006.01) B32B 3/26 (2006.01) B32B 5/18 (2006.01) C08L 61/10 (2006.01)

Patent

CA 2233569

This invention is a partially- or semi-cured foam (2, 12) used to form the pipe insulation. The semi-cured foam is very flexible and can be formed around a pipe (4) for a long period of time after production. The semi-cured phenolic foam board of this invention is a closed-cell foam. The semi-cured foam is further cured in the formed shaped (8, 18). Upon curing the foam retains the shaped of the perform. The semi-cured products is very flexible; once fully cured, the insulation becomes rigid.

Cette invention porte sur une mousse partiellement durcie ou semi-durcie (2, 12), utilisée pour isoler des tuyaux. Cette mousse semi-durcie, qui est très souple, peut être façonnée autour d'un tuyau (4) longtemps après sa fabrication. La mousse phénolique semi-durcie selon l'invention est une mousse à alvéoles fermées. Cette mousse finit de durcir sous la forme qui lui a été donnée (8, 18). En durcissant, la mousse conserve la forme de la préforme et, si semi-durci, le produit s'avère très souple, une fois complètement durci, ce produit d'isolation est devenu rigide.

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