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Mieczysław Kucharski, Jacek Lubczak


Addition of oxiranes to hydroxymethyl derivatives of melamine.

Part I. Preparation of polyetherols


Polimery 1984, No 7, 264



DOI: dx.doi.org/10.14314/polimery.1984.264


Summary


The conditions of addition of some selected oxiranes (ethylene oxide, propylene oxide, epichlorohydrine) to a mix­ture of hydroxymethylmelamines obtained in the reaction of melamine with formaldehyde have been determined. In dependence on the oxirane used and molar ratio of rea­gents products of different properties have been obtained, namely crosslinked polymers or soluble polymers sui­table for the synthesis of thermally stable polyurethane foams. It has been found that addition reaction Is accom­panied by a side reaction of hydroxymethyl groups con­densation.


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