| 摘要 |
PCT No. PCT/EP96/00140 Sec. 371 Date Jul. 15, 1997 Sec. 102(e) Date Jul. 15, 1997 PCT Filed Jan. 15, 1996 PCT Pub. No. WO96/23017 PCT Pub. Date Aug. 1, 1996Polyol 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-toluylenediamine, 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.
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