Light-stable solventless polyurethane coating agents and their use
作者： Lutz Dr. Schmalstieg , Harald Dr. Mertes , Gerhard Ruttmann , Ulric Dipl.-Ing. Walter , Hans-Josef Dr. Laas
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摘要: A solvent-free, two component polyurethane coating composition contains: (a) a polyisocyanate component, (b) polyol and opt. (c) known additives. The has an NCO/OH ratio of 0.7:1 to 1.5:1. viscosity 500-12,000 M Pas at 23 degrees C, isocyanate group content 13-24 wt.% monogenic diisocyanates less than 0.5 wt.%. It is mixture of: (i) 50-95 derived from 1,6 hexane diisocyanate with 100-4,000 mPa.s C 16-24 wt.%; (ii) 5-50 containing cycloaliphatic diisocyanate. Also claimed are: (A) the use for substrate; (B) terraces or roofs.
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