Modification ureaformaldehyde resin PKP-52
Modification possibility ureaformaldehyde resin PKP-52 by cardanol (phenol of a natural origin) and products of its condensation with formaldehyde for manufacturing waterproof plates of mineral wool is studied. The structure of products of condensation cardanol and formaldehyde is characterised by methods of a liquid chromatography, IR, NMR 1H and 13Ñ - spectroscopy