发明名称 |
FOERFARANDE FOER HAERDNING AV FENOLHARTSER. |
摘要 |
<p>In a process for hardening phenol-formaldehyde resol resins, comprising conducting the hardening of the resins with an acidic solution of water and/or an organic solvent having dissolved therein an aromatic sulphonic acid and/or concentrated sulphuric acid, the improvement comprising the hardening in the presence of aniline added to the phenolic resin beforehand in a quantity of between about 0.5 and 2% relative to the weight of the phenolic resin whereby the pot life is extended and the cure time is satisfactory, the resultant products being especially useful as prepegs.</p> |
申请公布号 |
FI845136(A0) |
申请公布日期 |
1984.12.27 |
申请号 |
FI19840005136 |
申请日期 |
1984.12.27 |
申请人 |
SOCIETE CHIMIQUE DES CHARBONNAGES S.A. |
发明人 |
COUSIN, MICHEL;MEYER, NICOLAS |
分类号 |
C08G14/06;C08K5/18;C08L61/00;C08L61/04;C08L61/06;(IPC1-7):C08L/ |
主分类号 |
C08G14/06 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|