反応性およびベラン型防水剤の製造

抄録

In an attempt to prepare the improved water-repellents for cellulosic fabrics that are structually similar to reactive dyes of the Procion group, 2-hexadecyloxy-4, 6-dichloro-s-triazine and 2-octadecylamino-4, 6-dichloro-s-triazine were synthesized by the reaction of cyanuric chloride with sodium cetylate and by the reaction of 2-amino-4, 6-dichloro-s-triazine with octadecyl chloride, respectively. Both products exhibited duarable water-repellency when applied to cellulosic fabrics.
On the other hand, some water-repellents of the Velan type were prepared from various hydroxy compounds bearing a hydrophobic group, such as monoglyceride, diglyceride, higher dialkylcarbinol, Guerbet's alcohol and tartarate, by treating with formaldehyde and hydrogen chloride and subsequently quaternizing with pyridine, and their water-repellencies were examined.
Among the hydroxy compounds studied, the following ones gave water-repellent finishes : synthesized and commercial monostearins (1), synthesized distearin (2), dipentadecylcarbinol (3), diheptadecylcarbinol (4), 2-tetradecyloctadecanol-1 (5), a monoglyceride mixture (6) obtained by glycerolizing hydrogenated rapeseed oil, a mixture of dialkyl tartarates (7) prepared by esterifying tartaric acid with a mixture of cetyl alcohol and stearyl alcohol.
Particularly the product prepared from the monoglyceride mixture 6 showed stronger water-repellency than the others, probably owing to the presence of a longer-chain hydrophobic group (C₂₂). Apparently the forked structure of the products derived from the distearin 2, the carbinol 3 or 4, the Guerbet's alcohol 5 and the tartarate mixture 7 showed no improved water-repellent effect. There was no definite relation between the water-repellent effect of the above mentioned products and the surface tension or the penetrating power of their aqueous solution.