THICK-COATING FOAMABLE FIREPROOF COMPOSITION

摘要

PURPOSE:To provide the title composition which can form a coating film of a thickness of 1mm to tens of millimeters when sprayed only once and has a high curing rate, can form a coating film of excellent rust-preventive power within a short time and can form a foamed heat-insulating layer without causing troubles such as cracking, sagging and chipping when heated. CONSTITUTION:A thick-coating foamable fireproof composition comprising a polyurethane-forming composition comprising the first pack containing a polyol and the second pack containing a polyisocyanate component, wherein at least one of the first and second packs contains expandable graphite, phosphorus or its compound, a branched polyalcohol and a nitrogeneous compound blowing agent.