LAMINATED SHEET OF FOAMED PHENOL RESIN AND METHOD OF THEREOF PRODUCTION Russian patent published in 2015 - IPC B32B27/42 C08J9/12 C08J9/228 

FIELD: chemistry.

SUBSTANCE: invention relates to laminated sheet of foamed phenol resin and to method of its production. Sheet contains foamed phenol resin and surface material, covering the surface of phenol resin, where foamed phenol resin contains hydrocarbon, chlorinated aliphatic hydrocarbon or their combination, density of foamed phenol resin equals from 10 kg/m³ to 100 kg/m³, the average diameter of foamed phenol resin cells constitutes 5-200 mcm, content of closed cells of foamed phenol resin constitutes 85-99%, and absolute value of degree of measurement of foamed phenol resin dimensions Δε_b, determined by test method, described in standard EN1604, constitutes 0.49% or less. Sheet is manufactured by foaming and hardening of foamed phenol resin composition on face material, with foamed phenol resin composition containing resin, catalyst of hardening, foaming agent and surface-active substance. Content of resin free phenol constitutes 1.0-4.3 wt %, content of resin water constitutes 1.0-9.2 wt %, resin viscosity at 40°C constitutes 5000-100000 mPa·s.

EFFECT: result consists in obtaining laminated sheet, which has improved stability of dimensions.

6 cl, 1 dwg, 2 tbl, 11 ex