Kimyasal yaslanmaya karsi direncli saydam poliüretan film tabakasi.

摘要

The film is made by deposition on a support of a reaction mixt. contg. an isocyanate cpd. obtained by polycondensn. of (A) a polyether-polyalcohol with mol.wt. 3000-6000 with (B) a di-isocyanate and (C) a chain-extending agent based on a polyether-polyol with mol.wt. 400-700 and viscosity 600-1200 mPa.s. Ratio between the free NCO gps. in (A) and the free OH gps. in (A) is around 2.