C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 18/78 (2006.01) C08G 18/10 (2006.01) C08G 18/32 (2006.01) C08G 18/40 (2006.01) C08G 18/65 (2006.01) C08J 9/12 (2006.01)
Patent
CA 2413687
This invention relates to a process for the preparation of a flexible foam. This process comprising reacting a liquid, storage stable, allophanate- modified polyisocyanate having an NCO group content of about 20 to about 42 %, with an isocyanate-reactive component, in the presence of a blowing agent and at least one catalyst,wherein the relative amounts of the polyisocyanate and the isocyanate-reactive component are such that the NCO index is from about 70 to about 130.
La présente invention concerne un procédé de préparation de mousse souple. Ce procédé consiste à faire réagir un polyisocyanate liquide, stable au stockage, modifié par un allophanate présentant une teneur en groupe NCO comprise entre environ 20 et environ 42 %, avec un composant réactif à l'isocyanate, en présence d'un agent d'expansion et d'au moins un catalyseur, les quantités relatives de polyisocyanate et du composant réactif à l'isocyanate étant tels que l'indice de NCO est compris entre 70 et environ 130.
Haider Karl W.
Nodelman Neil H.
Slack William E.
Corporation Bayer
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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