A process for preparing fluorochemical monoisocyanates comprises reacting at least one fluorochemical alcohol represented by the formula C
n
F
2n+1
SO
2
NCH
3
(CH
2
)
m
OH, wherein n=2 to 5, and m=2 to 4, with 4,4′-diphenylmethane diisocyanate (MDI) in a solvent in which the resulting fluorochemical monoisocyanate is not soluble; wherein the molar ratio of fluorochemical alcohol:MDI is from about 1:1 to about 1:2.5.
一种制备
氟化学单
异氰酸酯的过程,包括将至少一种由公式CnF2n+1SO2NCH3(
CH2)mOH表示的
氟化学醇与4,4'-二苯
甲烷二
异氰酸酯(
MDI)在不能溶解所得
氟化学单
异氰酸酯的溶剂中反应;其中,n=2至5,m=2至4,
氟化学醇:
MDI的摩尔比为约1:1至约1:2.5。