发明名称 |
Process for producing highly reactive modified phenolic resin and molding material |
摘要 |
Disclosed is a process for producing a highly reactive modified phenolic resin, which comprises mixing a heavy oil or pitch with 0.3 to 10 mol of a phenol, 0.2 to 9 mol in terms of formaldehyde, of a formaldehyde compound and 0.01 to 3.0 mol of an acid catalyst, each amount being based on 1 mol of the heavy oil or pitch calculated from an average molecular weight; and heating the resulting mixture with stirring, thereby to polycondensate the heavy oil or pitch, phenol and formaldehyde compound. According to this invention, there can be provided a process for producing simply and stably a highly reactive modified phenolic resin having low melt viscosity, excellent heat resistance and high reactivity with an epoxy resin, in one step.
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申请公布号 |
US6034210(A) |
申请公布日期 |
2000.03.07 |
申请号 |
US19980024454 |
申请日期 |
1998.02.17 |
申请人 |
KASHIMA OIL CO., LTD. |
发明人 |
TASHIMA, MASAO;MIYASITA, HIROMI;TAKEDA, HARUHIKO;FUJII, TOMOAKI;ISHIZUKA, TATSUSHI;HASEGAWA, MAKOTO |
分类号 |
C08G8/00;C08G8/28;C08G16/00;C08L61/06;C08L61/14;C08L63/00;C08L91/00;C08L95/00;H01B3/36;(IPC1-7):C08G8/28;C08G59/62;H01L23/29;H01L23/31 |
主分类号 |
C08G8/00 |
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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