Process for the manufacture of new plasticised melamine formaldehyde condensates
Abstract
Abstract A PROCESS FOR THE MANUFACTURE OF NEW PLASTICISED MELAMINE-FORMALDEHYDE CONDENSATES BY CONDENSING MELAMIDE WITH FORMALDEHYDE IN AN AQUEOUS MEDIUM WITH SIMULTANEOUS OR SUBSEQUET ADDITION OF A LACTAM OF THE FORMULA I R-N<(-CO-(CH2)N-) (IN WHICH R STANDS FOR HYDROGEN OR AN ALKYL GROUP CONTAINING 1 TO 4 CARBON ATOMS AND N IS A DIGIT FROM 3 TO 11, BOTH INCLUSIVE) AND OF A SUGAR, THE PROPORTION OF THE LACTAM AND OF THE SUGAR TOGETHER BEING 3 TO 15% BY WEIGHT AND THE PROPORTION OF SUGAR ALONE BEINE AT LEAST 1.5 AND AT MOST 7.5% OF THE WEIGHT OF THE MIXTURE OF MELAMINE AND FORMALDEHYDE, AND NEW PLASTICISED MELAMINEFORMALDEHYDE CONDENSATES OBTAINED BY THE SAID PROCESS. IT IS PREFERABLE TO CONDENSE MELAMINE WITH FORMALDEHYDE IN AN AQUEOUS MEDIUM IN THE PRESENCE OF BOTH A LACTAM OF THE FORMULA I AND OF A SUGAR.
Inventors
- 👤 H Diethelm
- 👤 R Gattlen
Bibliographic Details
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