申请人:Nippon Shokubai Co., Ltd.
公开号:US06452030B1
公开(公告)日:2002-09-17
This invention provides a hydroxyl group-containing betaine compound and a long-chain alkyl group-containing betaine compound, both of which are highly biodegradable and useful as surfactants, bactericides, antistatic agents, softening agents, rust inhibitors, resin modifiers, synthetic intermediates, etc. The invention further provides processes for producing such betaine compounds.
The hydroxyl group-containing betaine compound mentioned above can be represented by the following general formula (1)
wherein R1 and R2 maybe the same or different and each represents a hydrogen atom, a C1-8 hydrocarbon group or a C1-8 hydrocarbon group having a hydroxyl group, exclusive of the case in which both of R1 and R2 respectively represent a hydrogen atom; in case neither R1 nor R2 represents a hydrogen atom, R1 and R2 may be joined to each other through a single bond or through at least one kind of element selected from the group consisting of O, S and N; R3 represents a hydrogen atom, a methyl group or a hydroxymethyl group; A represents a hydrocarbon group of 2˜25 carbon atoms.
这项发明提供了一种含有羟基的甜菜碱化合物和一种含有长链烷基基团的甜菜碱化合物,两者均具有高度的生物降解性,并可用作表面活性剂、杀菌剂、抗静电剂、软化剂、防锈剂、树脂改性剂、合成中间体等。该发明还提供了生产这种甜菜碱化合物的方法。上述含有羟基的甜菜碱化合物可以用下列一般式(1)表示,其中R1和R2可以相同也可以不同,每个代表一个氢原子、一个C1-8烃基或一个具有羟基的C1-8烃基,但不包括R1和R2分别代表氢原子的情况;如果R1和R2都不代表氢原子,则它们可以通过单键或通过选自O、S和N组成的至少一种元素连接在一起;R3代表一个氢原子、一个甲基基团或一个羟甲基基团;A代表含有2~25个碳原子的烃基。