| 摘要 |
A method of producing phenolic moulding materials based upon orthoregular-structure phenol-aldehyde resins consists in that a polycondensation reaction occurs between the phenolic component and the anhydrous aldehyde component taken in a molar ratio of 1 to 0.3-1.5, respectively, in the presence of a filling agent, some additives and an alcohol selected from the group, consisting of mono- and dihydric alcohols which contain 2 to 8 carbon atoms and is taken in a ratio of 1 to 10 weight parts per 100 weight parts of the phenolic component, the reaction proceeding at 130 DEG to 250 DEG C for a period of time long enough to obtain a moulding material having a maximum weight percentage content of volatiles equal to 7. |
| 申请人 |
NISCHNETAGILSKIJ ZAVOD PLASTMASS, NISCHNIJ-TAGIL, SWERDLOWSKOI OBLASTI (SOWJETUNION) |
发明人 |
KRUGLIKOV, ANATOLIJ A.;ILIN, VADIM A.;OBRASZOVA, NELLI V.;STRUPINSKIJ, VLADIMIR A.;POTAPOV, VLADIMIR P. |
