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    • 4. 发明授权
    • Process for the preparation of etherified methylolaminotriazines
    • 制备醚化羟甲基氨基三嗪的方法
    • US4271286A
    • 1981-06-02
    • US136416
    • 1980-04-02
    • Walter MichelHans HonelManfred SchonWolfgang Kaiser
    • Walter MichelHans HonelManfred SchonWolfgang Kaiser
    • C07D251/64C08G12/00C08G12/26C08G12/40C08G12/42C08G12/30
    • C08G12/425C07D251/64
    • An improved process for the preparation of methylolaminotriazines etherified with alkanols and having per mol of the aminotriazine, an analytically determined average of 0.6 n to 2 n preferably 0.7 to 2 n methylol groups, which are etherified to the extent of 30 to 60%, n being the number of amino groups in the aminotriazine, wherein an aminotriazine is warmed to 80.degree. to 130.degree. C. with 0.7 n to 3 n mols of formaldehyde, 2 n to 10 n mols alkanol or a mixture of alkanols having 1 to 8 carbon atoms, the carbon chain of which, if having more than 2 carbon atoms, can also be interrupted by an oxygen atom, and 0 to 5 n mols of water, per mol of the aminotriazine, for 0.2 to 20 minutes, under elevated pressure, wherein the improvement comprises said aminotriazine being first heated to a temperature of 60.degree.-90.degree. C. in the presence of the formaldehyde and 0 to 30% by weight of the total amount of alkanol or alkanol mixture for 1 to 30 minutes at a pH 8 to 11 whereupon the remainder of the alkanol or alkanol mixture is added and the mixture is subsequently heated to 80.degree. to 130.degree. C. under elevated pressure in the presence of a strong inorganic or organic acid, at a pH of 3 to 8, for 0.2 to 20 minutes.
    • 制备用烷醇醚化并具有每摩尔氨基三嗪的羟甲基氨基三嗪的改进方法,分析测定的平均值为0.6n至2n,优选0.7至2个羟甲基,其醚化程度为30至60%,n 是氨基三嗪中的氨基数,其中氨基三嗪用0.7至3 n摩尔甲醛,2至10摩尔醇或1至8个碳原子的醇的混合物加热至80至130℃ 原子,如果碳原子数多于2个碳原子,碳原子数也可以被氧原子间隔,并且在高压下,每摩尔氨基三嗪为0至5微摩尔的水,为0.2至20分钟, 其中所述改进包括在甲醛存在下将所述氨基三嗪首先加热至60〜90℃,在pH为0〜30%的条件下,将烷基醇或链烷醇混合物的总量为0〜30重量%加热1〜30分钟 8到11,其余的t 加入烷醇或链烷醇混合物,随后在强度无机或有机酸存在下,在3至8的pH下,在高压下将混合物加热至80至130℃,时间为0.2至20分钟。
    • 5. 发明授权
    • Preparation of methoxy-methyl melamines
    • 甲氧基甲基三聚氰胺的制备
    • US4223141A
    • 1980-09-16
    • US51851
    • 1979-06-25
    • Hans HonelKarlfried KellerWalter MichelManfred Schon
    • Hans HonelKarlfried KellerWalter MichelManfred Schon
    • C07D251/64C08G12/42
    • C07D251/64C08G12/427
    • This invention relates to a process for the manufacture of methanol-etherified methylolmelamines which are largely monomeric containing more than 5 mols of formaldehyde and more than 4 mols of methyl-etherified methylol groups, per mol of melamine, and having a viscosity of less than 20 pascal-seconds at 25.degree. C. and a solids content of at least 95%, comprising (a) methylolating melamine with formaldehyde at a molar melamine:formaldehyde ratio of 1:6.5 to 1:8 for 11/2 to 5 hours at 50.degree. C. to 85.degree. C., with the formaldehyde source being an aqueous solution of formalin containing 30 to 50% by weight of formaldehyde and having a pH of 6.7 to 7.3, and (b) etherifying the resulting suspension of methylolmelamine with 15 to 30 mols of methanol per mol of melamine at temperatures of 30.degree. C. to 60.degree. C. in the presence of a strong acid.
    • 本发明涉及甲醇醚化的羟甲基三聚氰胺的制备方法,其主要是单体含有超过5摩尔的甲醛和超过4摩尔的甲基醚化的羟甲基,每摩尔三聚氰胺,并且粘度小于20 在25℃下的帕斯卡 - 秒和至少95%的固体含量,其包含(a)三聚氰胺与甲醛以三聚氰胺:甲醛比为1:6.5至1:8的羟甲基化作用,在50℃下11/2至5小时 甲醛源为甲醛水溶液,含有30至50重量%的甲醛,pH值为6.7至7.3,(b)将所得羟甲基三聚氰胺悬浮液用15份醚化至 在强酸存在下,在30℃至60℃的温度下,每摩尔三聚氰胺30摩尔甲醇。