Foamed phenol-urea-formaldehyde condensation product

Details Foamed phenol-urea-formaldehyde condensation product Foamed phenol-urea-formaldehyde condensation product

C - Chemistry, Metallurgy

08

G

403/53

C08G 14/08 (2006.01) C08J 9/00 (2006.01) C08L 61/34 (2006.01)

Patent

CA 1078998

ABSTRACT OF THE DISCLOSURE This invention relates to cellular plastic compositions of condensation products of phenol-urea and formaldehyde useful for thermal and acoustical insulation and methods for their prep- aration in which the phenol is present in amounts of about 1 to about 20 percent by weight wherein the condensation product prior to foaming and setting as a rigid cellular plastic has a viscosity at room temperature of approximately 30 to 36 seconds, No. 1 Zahn cup, and a pH maintained in the range of about 6 to 8.

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