OPEN-PORE MOULDINGS FOR USE IN THE CONSTRUCTION INDUSTRY

摘要

PCT No. PCT/EP94/01889 Sec. 371 Date Dec. 14, 1995 Sec. 102(e) Date Dec. 14, 1995 PCT Filed Jun. 9, 1994 PCT Pub. No. WO95/00568 PCT Pub. Date Jan. 5, 1995A composition useful as a casting resin is provided. The composition comprises a polyol, a polyisocyanate, a catalyst, and a suspension aid, and said catalyst and said suspension aid are present in the casting resin in such concentrations that, within 10 minutes of mixing, it flows downwards a) by at least 15 cm at 25 DEG C. and b) by 3 to 0.3 cm at 130 DEG C. The casting resin is particularly useful as a binder for a granular material in the production of open-cell moldings which are permeable to water.