Preparation of (2-hydroxyethyl)-melamines and their use as modifiers in the preparation of aminoplast resins

US4668785A · kind A · utility

Assignee

• BASF SE

Inventors

• Klaus Ebel · Lampertheim, DE
• Wolfgang Reuther · Neckargemünd, DE
• Wolfram Weiss · Mutterstadt, DE
• Ludwig Lelgemann

Key dates

• Filing date: Jun 13, 1985
• Grant date: May 26, 1987
• Expiry date: Jun 13, 2005

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31957
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

N,N',N"-tris-(2-hydroxyethyl)-melamine, if required, as a mixture with N-mono- and N,N'-bis-(2-hydroxyethyl)-melamine, is prepared by reacting melamine with ethanolamine in the presence of an acidic catalyst by a method in which the reaction is carried out at from 120.degree. to 250.degree. C. using an excess of ethanolamine, and the molar ratio of free ethanolamine to the sum of free and converted melamine is not permitted to fall below 4:1 during the entire reaction time, and the stated (2-hydroxyethyl)-melamines are used as modifiers in the prepartion of aminoplast resins which are suitable for laminating surfaces.