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US 2003/0148080 A1Published application
Composite elements containing polyisocyanate polyadditon products
AssigneeBASF SE
InventorsHeinz Forster, Matthias Hefner, Georg Knoblauch, J?uuml;rgen Mertes, Peter Reinerth, Thomas Sandbank, Edmund Stadler
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Abstract
The invention relates to composite elements comprising the following laminar structure: (i) 2 to 20 mm metal; (ii) 10 to 100 mm polyisocyanate polyaddition products having a density ranging from 350 to 1050 kg/m3 that can be obtained by reacting (a) isocyanates with (b) compounds, which are reactive to isocyanates, in the presence of (f) expanding agents, and; (iii) 2 to 20 mm metal.
Claims12
A composite structure exhibiting the following layered structure:
- (i) from 2 to 20 mm of metal,
- (ii) from 10 to 100 mm of a polyisocyanate polyaddition product having a density of from 350 to 1050 kg/m3 obtained by reaction of (a) an isocyanate with (b) an isocyanate-reactive compound in the presence of (f) an expanding agent,
- (iii) from 2 to 20 mm of metal.
A composite structure exhibiting the following layered structure:
- (i) from 2 to 20 mm of metal,
- (ii) from 10 to 100 mm of a polyisocyanate polyaddition product having a density of from 350 to 1050 kg/m3 and obtained by reaction of (a) an isocyanate with (b) an isocyanate-reactive compound in the presence of (f) an expanding agent, from 1 to 50 vol %, based on the volume of the polyisocyanate polyaddition product, of at least one gas (c) and, optionally, (d) a catalyst and/or (e) an auxiliary and/or additive,
- (iii) from 2 to 20 mm of metal.
Dependencies are inferred from the claim text.