Composite elements containing polyisocyanate-polyaddition...

Details Composite elements containing polyisocyanate-polyaddition... Composite elements containing polyisocyanate-polyaddition...

B - Operations, Transporting

32

B

B32B 15/08 (2006.01) C08G 18/48 (2006.01) C08G 18/66 (2006.01) C08J 9/12 (2006.01)

Patent

CA 2368697

The invention relates to composite elements that contain the following layer structure: (i) 2 to 20 mm metal; (ii) 10 to 300 mm polyisocyanate-polyaddition products which are obtained by reacting (a) isocyanates with (b) compounds that are reactive to isocyanates in the presence of 1 to 50 vol.- %, based on the volume of the polyisocyanate-polyaddition products, of at least one gas (c) and optionally (d) catalysts and/or (f) auxiliary agents or additives; (iii) 2 to 20 mm metal.

L'invention concerne des éléments composites présentant la structure stratifiée suivante : (i) entre 2 et 20 mm de métal ; (ii) entre 10 et 300 mm de produits de polyaddition de polyisocyanate obtenus par réaction (a) d'isocyanates avec (b) des composés réagissant par rapport aux isocyanates, en présence d'entre 1 et 50 % en volume, par rapport au volume des produits de polyaddition de polyisocyanate, d'au moins un gaz (c), ainsi qu'éventuellement (d) de catalyseurs et/ou (f) d'auxiliaires et/ou d'adjuvants ; (iii) entre 2 et 20 mm de métal.

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