Stabilized phenol-formaldehyde resins

Claim 1

A PROCESS OF MAKING A MODIFIED WATER-SOLUBLE THERMOSETTING PHENOL-FORMALDEHYDE RESIN SYRUP COMPRISING COOKING TOGETHER 1.0 MOL OF PHENOL WITH 1.0 TO 2.5 MOLES OF FORMALDEHYDE IN AQUEOUS SOLUTION IN THE PRESENCE OF AN ALKALINE CATALYST TO THE POINT WHERE A COMPLETELY REACTED AQUEOUS SOLUTION OF THE RESIN IS FORMED AND SUBSTANTIALLY ALL THE FREE FORMALDEHYDE HAS BEEN USED UP IN THE REACTION, ADDING FURTHER WATER AND ALKALINE CATALYST AND WITHOUT FURTHER HEATING, COOLING AND RESIN SOLUTION TO ROOM TEMPERATURE, AND TOTAL AMOUNT OF WATER USED BEING SO ADJUSTED THAT THE SOLIDS CONTENT IS 40% TO 70% OF THE SOLUTION, ADDING TO THE COMPLETELY REACTED AND COOLED RESIN SOLUTION A POLYAMINE SELECTED FROM THE GROUP CONSISTING OF ETHYLENEDIAMINE, DIETHYLENETRIAMINE, TRIETHYLENETETRAMINE, TETRAETHYLENEPENTAMINE, PROPYLENEDIAMINE, BUTYLENEDIAMINE AND 3,3''-AMINOBISPROPYLAMINE IN THE AMOUNT OF 0.5-10.0 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF THE RESIN SOLIDS, THEREBY PRODUCING A COMPOSITION POSSESSING AN INCREASED STORAGEABILITY AS COMPARED WITH THE STORAGEABILITY OF THE RESIN IN THE ABSENCE OF THE ADDITION OF THE POLYAMINE, AS EVIDENCED BY THE RELATIVE TIMES REQUIRED TO PRODUCE GELATION OF THE TWO COMPOSITIONS, MEASURED AT 145*F., THE GEL TIME OF THE POLYAMINE CONTAINING COMPOSITION BEING AT LEAST ABOUT 1 DAY GREATER THAN THE GEL TIME OF THE UNTREATED RESIN, STORING THE RESULTING COMPOSITION AND THEREAFTER AND PRIOR TO USE, ADDING TO THE STORED COMPOSITION, AN AMOUNT OF FORMALDEHYDE SUFFICIENT TO OBTAIN TOGETHER WITH THE FORMALDEHYDE ALREADY REACTED IN THE RESIN A TOTAL PHENOL TO FORMALDEHYDE MOLECULAR RATIO NOT HIGHER THAN 1:3.