C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 65/26 (2006.01) C08G 18/50 (2006.01) C08J 9/14 (2006.01) C08L 71/02 (2006.01)
Patent
CA 2211201
Polyol formulations, containing polyether polyols possessing 40 to 80 wt% of tertiary amino groups and having an OH number of 300 to 500, preferably 350 to 420, obtainable by addition of exclusively propylene oxide to o-toluene diamine, which contain cyclopentane and/or n- and/or i-pentane and/or hydrofluoro alkanes as blowing agent, are used for the manufacture of rigid polyurethane foams by reacting with organic polyisocyanates, optionally further compounds with at least two hydrogen atoms reactive to isocyanates, optionally in the presence of water, and further blowing agents known per se as well as conventional auxiliaries and additives.
Des formulations de polyols renfermant 40 à 80 % en poids de polyéthers-polyols présentant des groupes amino tertiaires, d'un indice OH de 300 à 500, de préférence de 350 à 420, obtenus par addition exclusivement d'oxyde de propylène sur de l'o-toluylènediamine, contenant du cyclopentane et/ou du n-pentane et/ou du i-pentane et/ou de l'hydrofluoralcane comme agent d'expansion, sont utilisées pour la production de mousses de polyuréthanne dures par réaction avec des polyisocyanates organiques, éventuellement d'autres composés ayant au moins deux atomes d'hydrogène réagissant aux isocyanates, le cas échéant en présence d'eau et d'autres agents d'expansion de type connu et de produits auxiliaires et adjuvants courants.
Dietrich Karl-Werner
Dietrich Manfred
Klan Walter
Lamberts Wilhelm
Aktiengesellschaft Bayer
Norton Rose Canada S.e.n.c.r.l.,s.r.l./llp
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