The polyurethane waterproofing paint without tar is produced with certain liquid hydroxylated resin instead of coal tar.
以一定量液态的羟基树脂替代煤焦油制作无焦油型聚氨酯防水涂料。
2
Treatment of 1, 3-diketones containing benzoyloxy group in 1% aqueous sodium hydroxide can afford directly the corresponding ring-A hydroxylated flavone.
With both low MPS concentration and suitable immersion time, a well-ordered and closely self-assembled MPS layers could be prepared on the hydroxylated surface.