FIELD: waterproofing treatment of asbestos sheeting with sulfur containing solution.
SUBSTANCE: asbestos sheeting is treated with aqueous sodium polysulfide. Sodium polysulfide is obtained from sulfur, pregrinded in disintegrator, and aqueous sodium hydroxide, followed by boiling up to total dissolution and subsequent introducing of polyhydric alcohol as stabilizer, cooling to the room temperature and filtration. Asbestos sheeting articles are treated by dipping and holding for 1-24 h.
EFFECT: asbestos sheeting articles of improved water resistance.
2 tbl
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