发明名称 |
FLAME-RESISTANT LAMINATES |
摘要 |
<p>A prepreg useful in flame resistant copper clad printed circuit boards is made by impregnating a porous substrate with an impregnant containing: either a prebrominated epoxy resin or a mixture of a non-halogenated epoxy resin and flame retarding additive containing bromine, and phenolic hydroxyl groups. A phenolic novolac oligomer having an average of over 2.5 phenolic hydroxyl groups per oligomeric unit is used as curing agent. Optionally, a suitable catalyst may be included. The impregnated substrate is heated to cure or advance the resin to the "B"-stage.</p> |
申请公布号 |
KR910008866(B1) |
申请公布日期 |
1991.10.24 |
申请号 |
KR19840002259 |
申请日期 |
1984.04.27 |
申请人 |
WESTINGHOUS ELECTRIC CORP. |
发明人 |
THOMAS WILBUR R.;MASCHETY JOSEPH R. |
分类号 |
C08L61/00;B32B15/08;B32B15/092;C08G59/00;C08J5/10;C08J5/24;C08L61/04;C08L63/00;C08L77/00;H05K1/03;(IPC1-7):B32B15/14 |
主分类号 |
C08L61/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|