C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
400/7339
C08L 61/28 (2006.01) C03C 25/34 (2006.01) C08G 12/42 (2006.01) D06M 15/427 (2006.01)
Patent
CA 1091836
ABSTRACT OF THE DISCLOSURE An etherified melamine-formaldehyde resin is disclosed that has prolonged shelf life, comparatively low free formaldehyde content, and is especially adapted as a binder for glass fiber mats. The melamine-formaldehyde resin is prepared in several distinct stages including condensation in a basic aqueous solution, etherification by cooling and acidification, neutralization with tri- ethanolamine, and final stabilization. The free formal- dehyde content of the resin so produced can be adjusted by reacting it with urea.
251045
Joachim Jacky C.
Kafka Bernard L.
Meunier Jean P.
Macrae & Co.
Saint Gobain Industries
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