Ahamed, K. A. Basheer; Nambi, K.; Arulraj, S. J., Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1987, vol. 26, # 8, p. 672 - 674
The present invention provides a polyvinyl ether compound containing an alkylene glycol or polyoxyalkylene glycol unit and a vinyl ether unit in a molecule and having a molecular weight in the range of 300 to 3,000. It shows high volume resistivity and a high viscosity index, so it can be favorably used as lubricating oil for a compression refrigerator.
A polyvinyl ether compound (including one having a specified terminal group) having constitutional units each represented by general formula (I) wherein R₃, R₄ and R₅ represent each H or alkyl; R⁶ represents alkylen; R⁷ represents alkyl; and k represents 0 to 10; and a process for producing the same by polymerizing a vinyl ether monomer in the presence of a specified initiator comprising a combination of a Brönsted acid, Lewis acid or organometallic compound with an adduct of a carboxylic acid with water, alcohol, phenol, acetal or vinyl ether. The compound is useful as lubricating oil, etc. A process for producing an ether compound by the reaction of an acetal or ketal represented by general formula (II) with hydrogen in the presence of an acidic substance and a solid catalyst having a hydrogenating ability to convert the group R³³O- or R³⁴O- into a hydrogen atom.
一种聚乙烯醇醚化合物(包括具有特定末端基团的聚乙烯醇醚化合物),其每个构 成单元均由通式(I)表示,其中 R₃、R₄ 和 R₅ 分别代表 H 或烷基;R⁶ 代表亚烷基;R⁷ 代表烷基;以及 k 代表 0 至 10;以及一种生产该化合物的工艺,其方法是在指定的引发剂存在下,使乙烯基醚单体聚合,该引发剂包括布氏酸、路易斯酸或有机金属化合物与羧酸与水、醇、苯酚、缩醛或乙烯基醚的加合物的组合。这种化合物可用作润滑油等。在酸性物质和具有氢化能力的固体催化剂存在下,通式 (II) 所代表的缩醛或缩酮与氢发生反应,将基团 R³³O- 或 R³⁴O- 转化为氢原子,从而生产醚化合物的工艺。
A NEW METHOD OF PREPARING ACETALS. II. ACETALS OF MONOHYDRIC ALCOHOLS
作者:H. D. Hinton、J. A. Nieuwland
DOI:10.1021/ja01370a049
日期:1930.7
Adams; Adkins, Journal of the American Chemical Society, 1925, vol. 47, p. 1365