A low monomer 1:1-monoadduct from a diisocyanate and a hydroxy(meth)acrylate with a free diisocyanate content of less than 0.7% by weight and a free NCO content of 10.4-16.4% by weight can be used as a starting material for an acrylic or NCO functionalized crosslinker; a bonding agent for coatings and adhesives; and a linker for solid-phase synthesis of oligo-nucleotides, polynucleotides or peptides. The monoadduct is obtained by converting 5-20 mol diisocyanate with 1 mol hydroxy(meth)acrylate at a temperature of 40-120 ° C. in the presence of at least one inhibitor; subsequently separating a non-converted diisocyanate from a reaction product by short-path distillation at 80-220 ° C./0.1-10 mbar; feeding air, nitrogen monoxide or oxygen or a mixture containing (a) air, oxygen or nitrogen monoxide and (b) a proportion of 1-90% by volume of carbon dioxide, nitrogen, an inert gas or a mixture thereof through a reaction apparatus.
一种由二
异氰酸酯和羟基(甲基)
丙烯酸酯制成的低单体 1:1 单加成物,其游离二
异氰酸酯含量小于 0.7%(重量比),游离 NCO 含量为 10.4-16.4%(重量比),可用作
丙烯酸或 NCO 功能化
交联剂的起始原料;涂料和粘合剂的粘接剂;以及固相合成寡核苷酸、多核苷酸或肽的连接剂。这种单加成物是在至少一种
抑制剂存在的情况下,在 40-120 ° C 的温度下将 5-20 摩尔二
异氰酸酯与 1 摩尔羟基(甲基)
丙烯酸酯进行转化而得到的;随后在 80-220 ° C 的温度下通过短程蒸馏将未转化的二
异氰酸酯从反应产物中分离出来。/0.1-10 毫巴的条件下,将空气、
一氧化氮或
氧气或含有 (a) 空气、
氧气或
一氧化氮和 (b) 体积比为 1-90% 的
二氧化碳、氮气、惰性气体或它们的混合物的混合物送入反应装置。