C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 18/00 (2006.01) C08G 18/42 (2006.01) C08G 63/00 (2006.01)
Patent
CA 2742543
The invention relates to the production and use of polyester polyols, formed from at least one carboxylic acid hydride and diethylene glycol, wherein a specialized reaction control substantially suppresses the formation of 1.4-dioxan from diethylene glycol. The invention also relates to the polyesterpolyol obtainable according to this method, to a method for producing a polyurethane (PUR) or polyisocyanurate foam (PIR) material and to metal composite elements containing the PUR or PIR foam according to the invention.
L'invention concerne la production et l'utilisation de polyester-polyols composés d'au moins un anhydride d'acide carboxylique et de diéthylèneglycol, la formation de 1,4-dioxane à partir du diéthylèneglycol étant largement réduite par une mise en oeuvre spéciale de la réaction. L'invention concerne également le polyester-polyol obtenu selon ce procédé, un procédé pour produire une mousse de polyuréthane ou de polyisocyanurate, ainsi que des composites métalliques contenant la mousse de polyuréthane ou de polyisocyanurate selon l'invention.
Bauer Erika
Heinemann Thorsten
Nefzger Hartmut
Roers Rolf
Schlossmacher Juergen
Bayer Materialscience Ag
Fetherstonhaugh & Co.
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