Perfluoroalkylthio glycols and esters thereof can be prepared by the free-radical catalyzed addition of a perfluoroalkylthiol to an acetylenic alcohol or ester thereof. The compounds obtained are useful intermediates for the synthesis of fluorochemicals with low free surface energies having oil and water repellent properties. In one embodiment, a perfluoroalkylthio glycol can be reacted with a diisocyanate to obtain a polyurethane containing perfluoroalkylthio groups, which polyurethanes are useful as coatings to provide oil and water repellence to textiles and as additives to plastics to provide mold-release and other desirable properties.
全氟烷基
硫醇
甘油及其
酯类化合物可以通过自由基催化的方式将
全氟烷基
硫醇加成到
乙炔醇或其
酯类化合物中制备。所得化合物是合成具有低自由表面能的
氟化学品的有用中间体,具有防
水和防油性能。在一种实施方式中,
全氟烷基
硫醇
甘油可以与二
异氰酸酯反应,得到含有
全氟烷基
硫醇基团的聚
氨酯,这些聚
氨酯可用作涂料,为纺织品提供防
水和防油性能,也可用作塑料添加剂,提供脱模和其他理想性能。