发明名称 |
Crosslinked phenoxyphosphazene compounds, process for the preparation thereof, flame retardants, flame-retardant resin compositions, and moldings of flame-retardant resins |
摘要 |
This invention provides a halogen-free flame retardant which advantageously has a high melting point and a low volatility and does not impair the inherent properties of resins. The flame retardant of the invention is a phosphazene compound crosslinked with a crosslinking group such as a phenylene group, wherein each of the crosslinking groups is interposed between the two oxygen groups left after the elimination of phenyl groups from the phosphazene compound; the crosslinked phenoxyphosphazene compound does not have any free hydroxyl groups (derived from crosslinking groups); and the amount of the phenyl groups in the crosslinked compound is 50 to 99.9%, based on the total number of the phenyl groups in the phosphazene compound.
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申请公布号 |
US6528559(B1) |
申请公布日期 |
2003.03.04 |
申请号 |
US20010762637 |
申请日期 |
2001.02.12 |
申请人 |
OTSUKA CHEMICAL CO., LTD. |
发明人 |
NAKACHO YOSHIFUMI;YABUHARA TADAO;TADA YUJI;NISHIOKA YOICHI |
分类号 |
C07F9/6581;C07F9/6593;C08G79/02;C08K5/5399;C09K21/14;(IPC1-7):C08K5/15;C08K21/00 |
主分类号 |
C07F9/6581 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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