FLAME-RESISTANT POLYCARBAMIDE FOAM

摘要

PCT No. PCT/EP95/01073 Sec. 371 Date Jul. 1, 1996 Sec. 102(e) Date Jul. 1, 1996 PCT Filed Mar. 22, 1995 PCT Pub. No. WO95/26322 PCT Pub. Date Oct. 5, 1995The flame-resistant polyurea foam of the invention contains calcium sulfate dihydrate as filler and ammonium polyphosphate as flame retardant. Its bulk density is from 25 to 250 kg/m3 and the number of open cells is above 80% of all its cells. The polyurea has been formed from a reaction of prepolymers of diphenylmethane 4,4'-diisocyanate with water. The polyurea foam of the invention can be used as a block foam or on-site foam for sound and/or heat insulation.