The development of environmentally benign organophosphorus flame retardant

2015 Fiscal Year Final Research Report

• Project/Area Number: 25410198
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Green/Environmental chemistry
• Research Institution: Osaka Municipal Technical Research Institute
• Principal Investigator: Ito Takatoshi 地方独立行政法人大阪市立工業研究所, 有機材料研究部, 研究室長 (60416295)
• Co-Investigator(Kenkyū-buntansha): IWAI Toshiyuki 地方独立行政法人大阪市立工業研究所, 有機材料研究部, 研究主任 (20416291)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 有機リン化合物 / 添加剤 / クロスカップリング / 難燃剤

Outline of Final Research Achievements

Organophosphorus compounds based on 9,10-Dihydro-9-oxa-10-phosphaphenanthrene 10-oxide derivatives have attracted much attention as environmental benign flame retardants. Various 9,10-Dihydro-9-oxa-10-phosphaphenanthrene 10-oxide derivatives were efficiently synthesized by Friedel-Crafts reaction of 2-hydroxybiphenyls with phosphorus trichloride in the presence of super acids, especially TfOH as a catalyst. The novel organophosphorus compounds consist of an ether bridge connecting with glutaryl dichloride and sebacoyl chlorides were synthesized. These compounds was determined and characterized by 1H-, 13C- 31P-NMR and TG-DTA data. It was found that the bridged organophosphorus compounds exhibited good thermal stability compared to the 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide. This observation is important for high temperature polymer application requiring for the melt processing conditions.

Free Research Field

化学