17 августа, 2015 
Malyar A RF novolak is produced according to the following schematic reaction (Formula 5):
If paraformaldehyde and fillers, generally wood and nutshell flours, are added, the resin becomes capable of setting in 2 to 3h and curing in 16 to 24 h at ambient temperature.
Опубликовано в рубрике 