焦油酚-木素磺酸合成单宁的研制

Studies on the Synthesis of Tar Phenol-Lignisulfonic Acid Syntan

众所周知,木素磺酸是造纸厂或纤维浆厂的工业副产物,价廉,有很好的分散性和渗透性。由于它带有大量磺酸基,把它接到其它物质上时,可以直接起到磺酸基的作用。比如,生产双氰胺-甲醛树脂鞣剂时,加入木素磺酸进行缩合,或合成好的树脂加入木素磺酸后进行喷雾干燥便可改变产品的分散性和电性。拜尔公司的Retingan R6苏和联的ДДАΜ-2-C鞣剂便是这样的。苏联的СПС则是以木素磺酸为主成份的合成单宁,准确地说,它是用酚类物质改性木素磺酸,使其获得一定的鞣性,产品的特点是价廉,

The Condensation product of tar phenol/distillate product and ligninsu- lfonic acid was prepared with formalin as Coudensation agent, then the Co- ndensation product was mixed with another part of ligninsulfoaic acid. F- actors effecting the Condensation were studied. The tanning was Carried out on small pieces of delimed goat pelt, the tanning preperty of final pro- ducts was determined by the Shrinkage of tanned leather. products werne ob- taied which had good stability and tanning preperty.