Process for preparing phenolic binder

Details Process for preparing phenolic binder Process for preparing phenolic binder

C - Chemistry, Metallurgy

08

G

C08G 8/28 (2006.01) C03C 25/34 (2006.01) C08G 14/08 (2006.01) C08L 61/14 (2006.01)

Patent

CA 2068242

A phenolic binder for glass fibers is prepared using an aqueous mixture including a phenol-formaldehyde resale resin, modified with urea in the presence of ammonia. The urea and ammonia are added after the basic mixture including the resole resin has been neutralized. The urea-modified resole resin shows greater stability than urea-modified resins prepared without ammonia.

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