A method for synthesizing hydroxy propane sulfonic acid pyridinium salt, which comprises the following steps: metasulfite alkali metal or bisulfite dissolves in water, the sulfite and phase transfer catalyst, and epichlorohydrin ring opening addition reaction of chemical formula is the ring opening products in M as base the metal; ring opening product is soluble in water and pyridine reaction, after the reaction and after purification by PPS-OH. The method for synthesizing PPS-OH not only has good yield, but also has no by-products, and the product does not contain free pyridine, and has better effect for electroplating. At the same time, the invention is free from pollution and uses water as a solvent, which is more favorable for environmental protection. Moreover, the catalyst is added into the catalyst, the reaction effect is better, the reaction speed is faster, the condition is better controlled, and the utility model is suitable for industrial production. The introduction of inert gas into the reaction also reduces the free radical polymerization of epichlorohydrin due to the presence of oxygen and further increases the yield.
【技术实现步骤摘要】
本专利技术属于镀镍光亮剂的合成方法,具体是指羟基丙烷磺酸吡啶嗡盐的合成方法。
技术介绍
羟基丙烷磺酸吡啶嗡盐是一种电镀中间体,白色晶体,分子式=C8H11NO4S,分子量 217. M,CAS号3918-73-8。常见的为含量在40-50%之间的液体产品。羟基丙烷磺酸吡啶嗡盐(PPS-OH)是镀镍中间体主要产品之一,具有优良的光亮和整平作用,尤其在高电流密度区整平效果特佳,对镀层可以产生白亮效果。作为镀镍液中的基础性添加剂,市场消耗量大。目前,羟基丙烷磺酸吡啶嗡盐(PPS-OH)液体产品在国外只有德国Rashing公司生产, 国内同行主要还是依赖进口。一篇专利号为FR1390191的法国专利中公开了一种合成PPS-OH的方法,它分为两个步骤第一步以水为溶剂,用酚酞做指示剂,将吡啶与环氧氯丙烷搅拌反应,用盐酸调节PH值范围,严格控制在7-8之间,反应温度控制在40 0C左右。第二步向第一步反应产物中加入亚硫酸钠,直至亚硫酸钠晶体全部溶解,升温至 90-100°C反应他,减压浓缩,干燥。再以甲醇为溶剂,升温至沸腾回流直至有无色片状晶体形成。其反应原理如下权利要求1.,其步骤包括将碱金属的焦亚硫酸盐或亚硫酸氢盐溶于水后,在亚硫酸盐和相转移催化剂下,与环氧氯丙烷发生开环加成反应得到化学式如下的开环产物OH,式中M为碱金属;将上述开环产物溶于水后与吡啶反应,反应完毕并纯化后即得到羟基丙烷磺酸吡啶嗡盐。2.根据权利要求1所述的羟基丙烷磺酸吡啶嗡盐的合成方法,其特征在于所述碱金属的焦亚硫酸盐为Naj2O5或Kj2O5 ;所述碱金属的亚硫酸氢盐为NaHSO3或KHS03 ...
【技术保护点】
1.一种羟基丙烷磺酸吡啶嗡盐的合成方法,其步骤包括:将碱金属的焦亚硫酸盐或亚硫酸氢盐溶于水后,在亚硫酸盐和相转移催化剂下,与环氧氯丙烷发生开环加成反应得到化学式如下的开环产物,式中M为碱金属;将上述开环产物溶于水后与吡啶反应,反应完毕并纯化后即得到羟基丙烷磺酸吡啶嗡盐。
【技术特征摘要】
【专利技术属性】
技术研发人员:黄开伟,付远波,陈彰评,周世骏,宋文超,
申请(专利权)人:湖北吉和昌化工科技有限公司,
类型:发明
国别省市:42
还没有人留言评论。发表了对其他浏览者有用的留言会获得科技券。