C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 175/04 (2006.01) C08G 18/79 (2006.01) C08J 9/32 (2006.01) C08K 7/22 (2006.01) C08K 7/28 (2006.01) C09D 175/08 (2006.01) F16L 59/02 (2006.01)
Patent
CA 2296096
The invention relates to a method for producing insulating coatings for hollow bodies. Said insulating coatings have polyurethane and/or polyisocyanurate groups, and are produced by reacting a) one polyisocyanate component with b) at least two compounds with hydrogen atoms which are active towards isocyanates and c) catalysts, optionally in the presence of d) other auxiliary agents and additives. The inventive insulating coatings are characterised in that organic or mineral hollow microspheres with an average particle size of between 5 and 200 µm and a density of between 0.1 and 0.8 g/cm3 are added to at least one of the components a) to d). The invention also relates to the use of the inventive insulating coatings for pipes used in offshore applications.
L'invention concerne un procédé permettant de produire des revêtements isolants présentant des groupes polyuréthane et/ou polyisocyanurate pour des corps creux, par réaction de a) un constituant polyisocyanate avec b) au moins deux composés comportant des atomes d'hydrogène actifs à l'encontre d'isocyanates et c) des catalyseurs éventuellement en présence d) d'autres auxiliaires et adjuvants. Ce procédé se caractérise en ce qu'on ajoute à au moins un des constituants a) à d), des microsphères creuses organiques ou minérales, de grandeur particulaire moyenne de l'ordre de 5 à 200 µm et de masse volumique comprise entre 0,1 et 0,8 g/cm?3¿. L'invention concerne en outre l'utilisation de ces revêtements isolants pour des tuyaux utilisés dans des structures situées au large des côtes.
Bouvier Denis
Grimm Wolfgang
Post Udo
von Seggern Elke
Aktiengesellschaft Bayer
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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