PROCESS FOR PRODUCING ELASTIC POLYURETHANE MOULDINGS WITH COMPACT SURFACES AND CELLULAR CORES

摘要

- Isocyanate prepolymers (I) with an isocyanate (NCO) content 15 wt.%, which are prepared by reacting 4,4'-diisocyanato-diphenylmethane (MDI) with polyoxypropylene and/or polyoxypropylene-polyoxyethylene polyol, are new. Also claimed is a method of preparing highly elastic polyurethane integral foam mouldings, using (I) as modified organic polyisocyanate component.