アルミニウムセッケンの物理化学的研究 (第1報)
ステアリン酸アルミニウム-ベンゼン溶液の溶解直後の固有粘度
1962 年 82 巻 6 号 p. 821-825
詳細
1962 年 82 巻 6 号 p. 821-825
Aluminium distearate was obtained by double decomposition of potassium stearate and aluminium chloride in water and by hydrolysis of aluminium isopropoxydistearate, obtained from aluminium isopropoxide in nonaqueous solvent. Viscosity of four kinds of these soaps and commercial products in benzene solution was measured and intrinsic viscosity immediately after solution was calculated. It was thereby found that (1n ηγ)/C of aluminium stearate in benzene solution is linear with concentration, that the value of [η] and, accordingly, degree of polymerization, are independent of melting point and stearate aluminium ratio found by chemical analysis, and that degree of polymerization of aluminium soap can be represented well by the intrinsic viscosity measured immediately after solution. The degree of polymerization of aluminium stearate is the greatest in di-soaps with a hydroxyl but it was found that di-soaps with impurities also had greater degree of polymerization immediately after solution and that some of the commercial products were of fairly low degree of polymerization.
