Preparation of (2-hydroxyethyl)-melamines and their use as modifiers in
the preparation of aminoplast resins
    1.
    发明授权
    Preparation of (2-hydroxyethyl)-melamines and their use as modifiers in the preparation of aminoplast resins 失效
    (2-羟乙基) - 三聚氰胺的制备及其在制备氨基塑料树脂中的用途

    公开(公告)号:US4668785A

    公开(公告)日:1987-05-26

    申请号:US744203

    申请日:1985-06-13

    摘要: 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.

    摘要翻译: N,N',N“ - 三 - (2-羟乙基) - 三聚氰胺,如果需要,与N-单和N,N'-双 - (2-羟乙基) - 三聚氰胺的混合物,通过 三聚氰胺与乙醇胺在酸性催化剂存在下的反应,其中反应在120-250℃下进行,使用过量的乙醇胺,游离乙醇胺与游离和转化三聚氰胺的总和摩尔比 在整个反应时间内不允许低于4:1,并且所述(2-羟乙基) - 三聚氰胺在适用于层压表面的氨基塑料树脂的制备中用作改性剂。