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
    • 57. 发明授权
    • Process for preparation of .alpha., .beta.-unsaturated
N-substituted-carboxylic acid amides
    • 制备α,β-不饱和N-取代羧酸酰胺的方法
    • US4408073A
    • 1983-10-04
    • US107245
    • 1979-12-26
    • Bernhard GoossensErich KusterKurt DahmenEduard Barthell
    • Bernhard GoossensErich KusterKurt DahmenEduard Barthell
    • C02F1/54C08F20/54C08F20/60C10M149/06D21H17/45C07C102/00
    • C02F1/54C08F20/54C08F20/60C10M149/06D21H17/455C10M2209/02C10M2217/02C10M2217/024C10M2217/028C10M2217/06
    • The invention relates to a process for the preparation of .alpha., .beta.-unsaturated N-substituted carboxylic acid amides, novel .alpha., .beta.-unsaturated N-substituted carboxylic acid amides, a process for the polymerization of these novel .alpha., .beta.-unsaturated N-substituted carboxylic acid amides, including the polymers, and the use of these polymers as sedimentation, flocculating, dewatering and retention aids, as additives for mineral oils, and as ion exchangers.The .alpha., .beta.-unsaturated N-substituted carboxylic acid amides are prepared by transamidation of .beta.-hydroxy or .beta.-alkoxy carboxylic acid amides with primary amines and heating of the N-substituted .beta.-hydroxy or .beta.-alkoxy carboxylic acid amides obtained as intermediate products in the vapor phase in the presence of catalysts. Primary amines are preferably used in the conversion which have no hydrogen beta to the amino group.These .alpha.,.beta.-unsaturated carboxylic acid amides may be neutralized and/or quaternized and polymerized by processes which as such are known alone or with other comonomers, and preferably acrylic or methacrylic acid derivatives such as acrylamide, to give cationic polymers. These polymers are suited for use as flocculating and sedimentation aids, as dewatering and retention aids in papermaking, as additives for mineral oils, and as ion exchangers.
    • 本发明涉及制备α,β-不饱和N-取代羧酸酰胺,新型α,β-不饱和N-取代羧酸酰胺的方法,这些新型α,β-不饱和N-取代羧酸酰胺的聚合方法, 取代的羧酸酰胺,包括聚合物,以及这些聚合物作为沉淀,絮凝,脱水和助留剂,作为矿物油的添加剂和作为离子交换剂的用途。 α,β-不饱和的N-取代羧酸酰胺通过β-羟基或β-烷氧基羧酸酰胺与伯胺的酰胺化反应制得,加热得到的N-取代的β-羟基或β-烷氧基羧酸酰胺作为中间体 在催化剂存在下气相中的产物。 伯胺优选用于与氨基不具有氢的转化。 这些α,β-不饱和羧酸酰胺可以被单独或与其它共聚单体,优选丙烯酸或甲基丙烯酸衍生物如丙烯酰胺一起已知的方法中和和/或季铵化和聚合,得到阳离子聚合物。 这些聚合物适合用作絮凝和沉淀助剂,如造纸中的脱水和助留剂,矿物油的添加剂和离子交换剂。