发明名称 |
AROMATIC POLYCARBODIIMIDE AND ITS SHEET |
摘要 |
PROBLEM TO BE SOLVED: To obtain an polycarbodiimide having a high solubility in organic solvents, good in processability and having excellent heat and moisture resistances by polymerizing a specific diisocyanate monomer. SOLUTION: (A) A diisocyanate monomer represented by formula I is used as a monomer and polymerized in the presence of (B) a phosphorus-based catalyst (e.g. 1-phenyl-2-phospholene-1-oxide) preferably at 40-150 deg.C to thereby afford an aromatic polycarbodiimide having a constitutional unit represented by formula II [(n) is 2-300]. In the above polymerization, the concentration of the component A is preferably 5-70 wt.%. A molded product prepared by molding the polycarbodiimide into a filmy form can be used as a heat-resistant bonding sheet and is useful for especially a fixing treatment for electrical and electronic parts such as semiconductor chips or lead frames requiring the fixing treatment of high reliability and further low hygroscopicity.
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申请公布号 |
JP2000128945(A) |
申请公布日期 |
2000.05.09 |
申请号 |
JP19980305201 |
申请日期 |
1998.10.27 |
申请人 |
NITTO DENKO CORP |
发明人 |
MATSUMURA AKIKO;MISUMI SADAHITO;MOCHIZUKI SHU;SAKAMOTO YUKIE |
分类号 |
C08J5/18;C08G18/02;C08G73/00;C08L79/00;(IPC1-7):C08G18/02 |
主分类号 |
C08J5/18 |
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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