会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 3. 发明授权
    • Method for synthesizing homopolymer N-vinyl butyrolactam with super-low molecular weight and super-low residual monomer
    • 用超低分子量和超低残留单体合成均聚物N-乙烯基丁内酰胺的方法
    • US09453087B2
    • 2016-09-27
    • US14401743
    • 2012-07-23
    • Yu WangWei LiuZhan Chen
    • Yu WangWei LiuZhan Chen
    • C08F24/00C08F126/06C08F4/38C08F6/00
    • C08F24/00C08F4/38C08F6/003C08F126/06C08L39/04
    • A synthesis method of ultra low molecular weight homopolymerized N-vinyl butyrolactam with ultra low residual monomer content is provided N-vinyl butyrolactam monomers and water are provided with the mass ratio of 3:17˜8:12 0.5%˜5.0% by weight of initiators, 0.1%˜5.0% by weight of a catalyst, and 0.1%˜10% by weight of a molecular weight regulator are provided in the presence of an inert gas, adding the above mentioned raw materials in batches, adjusting the pH of the reaction system to 7.0-8.0 with an activator, reacting at the polymerization temperature of 60-85° C. A peroxide is added and maintaining the temperature for 2 hours, to obtain an aqueous solution of ultra low molecular weight homopolymerized N-vinyl butyrolactam. The aqueous solution is dried to obtain a powdery ultra low molecular weight homopolymerized N-vinyl butyrolactam with ultra low residual monomer content.
    • 提供了具有超低残留单体含量的超低分子量均聚的N-乙烯基丁内酰胺的合成方法,提供了N-乙烯基丁内酰胺单体和水,其质量比为3:17〜8:12 0.5%〜5.0% 引发剂,0.1重量%〜5.0重量%的催化剂和0.1重量%〜10重量%的分子量调节剂,在惰性气体存在下,分批加入上述原料,调节pH值 反应体系为7.0-8.0,用活化剂,在聚合温度为60-85℃下反应。加入过氧化物并保持温度2小时,得到超低分子量均聚N-乙烯基丁内酰胺水溶液。 将水溶液干燥,得到具有超低残留单体含量的粉末状超低分子量均聚N-乙烯基丁内酰胺。