FISCHER, FRANK,BOHRER, ERIK,MASCHKE, ANGELIKA,KOLTER, KARL,KERBER, MICHAEL
申请号：
EP11843266.5
公开号：
EP2643363A1
申请日:
2011.11.21
申请国别(地区):
EP
年份:
2013
代理人:
摘要：
Disclosed is a process for the preparation of low-peroxide crosslinked vinyllactam polymer by free-radical polymerization in the presence of at least one organic substance acting as antioxidant. The vinyllactam polymer is water-insolubly crosslinked polyvinylpyrrolidone or vinylpyrrolidone copolymer with vinylimidazole, vinylcaprolactam and/or vinyl acetate. The obtained vinyllactam polymer has low peroxide contents, and the peroxide contents do not increase or increase slightly within a certain time and low residual monomer contents. The obtained vinyllactam polymer is suitable to use in the field of pharmaceutical and food applications.
