US 4,724,250 AGranted

One-component molding material and its use as construction material

AssigneeMankiewicz Gebr. & Co. GmbH & Co. KG

InventorsBernd Schubert, Klaus D. Rohardt

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Abstract

A one-component molding material based on polyisocyanato-isocyanurates and flameproofing and fireproofing agents, as well as optionally polyisocyanates, fillers and promoters is described which comprises 40 to 80% by weight of the isocyanurate of 1,6-hexamethylene diisocyanate, 0 to 20% by weight of crude MDI and/or prepolymer of polyol and crude MDI and/or isophorone diisocyanate optinally in combination with further isocyanate groups containing compounds, 5 to 20% by weight of a fireproofing mixture mainly consisting of secondary ammonium phosphate, 0 to 50% by weight filler and 0 to 5% by weight promoter. This low viscosity putty-like mass which is cold-workable and is cured under the influence of moisture, especially at increased temperatures, is useful as construction material for many applications, especially for the manufacture of molded components and plate elements for the construction of land, air and water vehicles. The products obtained after curing meet the highest requirements with regard to fire protection and possess excellent mechanical properties.

Claims10

Dependent claims

A one-component molding material based on polyisocyanato-isocyanurates and flameproofing and fireproofing agents as well as optionally polyisocyanates, fillers and promoters comprising:

(A) 40 to 80% by weight of the isocyanurate of 1,6-hexamethylene diisocyanate with a NCO content of 18 to 24% by weight,
(B) 0 to 20% by weight of crude MDI and/or prepolymer of polyol and crude MDI and/or isophorone diisocyanate optionally in combination with dimerized triazine of TDI, copolymerized triazine of TDI and HDI and/or naphthalene diisocyanate,
(C) 5 to 20% by weight of a mixture of:
(a) 50 to 100% by weight of secondary ammonium phosphate, with the proviso that the amount of secondary ammonium phosphate is 80 to 100% by weight if component C is only present in an amount of 5 to 10% by weight,
(b) 0 to 20% by weight of primary ammonium phosphate,
(c) 0 to 20% by weight of zeolite and/or crystalline alkali silicate,
(d) 0 to 20% by weight of finely divided silica,
(e) 0 to 20% by weight of Ca.sub.3 (PO.sub.4).sub.2,
(f) 0 to 20% by weight azodicarbonamide,
(g) 0 to 20% by weight calcined calcium oxide,
(D) 0 to 50% by weight of filler and
(E) 0 to 5% by weight promoter.

9 more elements

Dependencies are inferred from the claim text.