High surface area magnesia as hardener for phenolic resins

Details High surface area magnesia as hardener for phenolic resins High surface area magnesia as hardener for phenolic resins

C - Chemistry, Metallurgy

08

L

C08L 61/06 (2006.01) C04B 35/634 (2006.01) C08G 8/28 (2006.01) C08K 3/22 (2006.01)

Patent

CA 2052264

R.I.C.2191 ABSTRACT OF THE DISCLOSURE There are disclosed methods and compositions for room temperature hardening of phenolic resole resin refractory compositions containing a magnesium oxide hardening agent alone or together with an organic ester. The resin is a low viscosity, low molecular weight resin having a high free phenol content. The magnesium hardening agent has a surface area of at least 20 square meters per gram. The compositions provide adequate working times and room temperature hardening within 24 hours.

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