Process for manufacturing water soluble alkoxylated methylol melamines
Abstract
Abstract A PROCESS FOR PRODUCCING WATER SOLUBLE ALKOXYLATED METHYLOL MELAMINES WHICH COMPRISES HEATING IN THE FIRST STAGE IN THE PRESENCE OF ALKALIS 1 MOL MELAMINE WITH 2 TO 6 MOLS PARAFORMALDEHYDE IN 0.4 TO 1.2 MOLS OF A BIVALENT OR TERVALENT ALCOHOL WITH A TOTAL OF 2 TO 6 CARBON ATOMS, WHEREBY UP TO 60% BY WEIGHT OF THE POLYALCOHOL CAN BE EXCHANGED WITH AT LEAST THE SAME AMOUNT BY WEIGHT OF A LOW UNIVALENT ALIPHATIC ALCOHOL USED FOR ALKOXYLATON IN THE SECOND STAGE. THE HEATING CONTINUES UNTIL AN OPALECENT TO CLEAR THE SOLUTION IS PRODUCED. IMMEDIATELY THEREAFTER IN THE SECOND STAGE AFTER THE ADDITION OF EXCESSIVE LOW UNIVALENT ALIPHATIC ALCOHOL THE SOLUTION IS ACIDLY ALKOXYLATED IN THE USUAL MANNER AND NEUTRALIZED. POSSIBLY THE EXCESSIVE UNIVALENT ALCOHOL IS DISTILLED OFF.
Inventors
- 👤 G Pusch
- 👤 D Walz
Bibliographic Details
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