Process for the preparation of polyaromatic polyamines comprising the step of reacting formaldehyde with at least one monoaromatic monoamine and at least one monoaromatic compound containing at least two amino functions in the presence of an acidic catalyst where a) the total amount of di-aromatic compounds in the polyaromatic polyamine mixture is in the range from about 25 wt % to about 50 wt % and b) the amount of monoaromatic compound containing at least two amine functions is in the range 5 to 30 mole % relative to 100 mole % of the total amount of monoaromatic monoamines and c) the amount of acidic catalyst used in the preparation of the polyaromatic polyamine mixture is less than about 0.4 moles per mole of formaldehyde or formaldehyde equivalents.
制备多芳基
多胺的过程包括以下步骤:在酸性催化剂存在下,将
甲醛与至少一种单芳基单胺和至少一种含有至少两个
氨基功能的单芳基化合物反应。其中a)多芳基
多胺混合物中二芳基化合物的总量在约25重量%至约50重量%的范围内,b)含有至少两个胺基功能的单芳基化合物的量相对于总量的单芳基单胺为100摩尔%,在5至30摩尔%的范围内,c)在制备多芳基
多胺混合物时使用的酸性催化剂的量小于约0.4摩尔/摩尔
甲醛或
甲醛当量。