Phenolic foam materials and method of making same

Details Phenolic foam materials and method of making same Phenolic foam materials and method of making same

C - Chemistry, Metallurgy

08

L

403/54

C08L 61/10 (2006.01) C08J 9/14 (2006.01) C08J 9/34 (2006.01)

Patent

CA 1124000

-15- PHENOLIC FOAM MATERIALS AND METHOD OF MAKING SAME Abstract of the Disclosure A phenolic material having improved cell struc- ture and surface skin characteristics is prepared by mixing, foaming and curing a foamable composition comprising a phenol-formaldehyde resin; an acid catalyst; a foaming agent-mixture containing a low boiling fluorocarbon, a surface active agent and a polyhydric alcohol; and a filler/extender mixture functioning as a cell structure control agent com- prised of a water soluble inorganic salt and ammonium lignin sulfonate.

344840

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