WATER SOLUBLE PHENOLIC RESOLE-UREA COMPOSITION
A WATER SOLUBLE PHENOLIC RESOLE-UREA COMPOSITION USEFUL AS A BINDER WHICH REMAINS INFINITELY WATER-DILUTABLE AND FREE OF SEDIMENT AFTER ONE MONTH OF STORAGE AT 0C AND IS MADE BY THE REACTION OF UREA WITH THE FREE FORMALDEHYDE IN A PHENOLIC RESOLE UNDER ACID CONDITIONS, FOLLOWED BY THE FURTHER ADDITI...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | A WATER SOLUBLE PHENOLIC RESOLE-UREA COMPOSITION USEFUL AS A BINDER WHICH REMAINS INFINITELY WATER-DILUTABLE AND FREE OF SEDIMENT AFTER ONE MONTH OF STORAGE AT 0C AND IS MADE BY THE REACTION OF UREA WITH THE FREE FORMALDEHYDE IN A PHENOLIC RESOLE UNDER ACID CONDITIONS, FOLLOWED BY THE FURTHER ADDITION OF UREA NEUTRAL OR SLIGHTLY BASIC CONDITIONS. |
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