Fire-retardant composite and process for its preparation

摘要

The flame retardant material (I) that becomes intumescent at elevated temperature contains:(A) (A1) 25-45 wt.% binder (A2) 0-0.5 wt.% fungicide (A3) 0.2-1 wt.% dispersing and crosslinking agent (A4) 1-5 wt.% plasticiser (A5) 0-2 wt.% anti-freeze additive (B) (B1) 20-40 wt.% filler (B2) 0-3 wt.% pigment (C) (C1) 4-6 wt.% intumescence causing propellent (C2) 16-25 wt.% suppressant (D) 0.2-1.5, preferably 0.1-0.5 wt.% cellulose Also claimed is a process for the preparation of (I) by mixing cellulose with water and following the subsequent swelling of the cellulose adding ammonium polyphosphate.