| 摘要 |
FIELD: well insulation. SUBSTANCE: resin is prepared by mixing for 2 h EPOXY resin, phenol-formaldehyde resin, polyvinyl alcohol, formalin, and diethylene glycol, followed by raising temperature to 55-60 C for 1 h, keeping mixture for 2 h at that temperature, and cooling it at room temperature for 2 h. EFFECT: increased resistance of EPOXY resin compositions against corrosive media. 1 tbl, 3 ex
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