FIELD: chemistry.
SUBSTANCE: composition may comprise from 40 to approx. 60 wt % of lignosulfonic acid or its salt, 1 to 20 wt % of water-repellent agent and 20 to 59 wt % of liquid medium.
EFFECT: reduced water absorption and swelling along pressed wood thickness.
16 cl, 1 tbl, 2 ex
Authors
Dates
2017-05-31—Published
2013-12-19—Filed