COLD FLEXIBLE POLYURETHANE FORMULATION

    公开(公告)号:CA3049930A1

    公开(公告)日:2018-08-02

    申请号:CA3049930

    申请日:2018-01-22

    Applicant: BASF SE

    Abstract: The invention relates to a method for producing a cold flexible polyurethane insulation in which (a) polyisocyanates are mixed with (b) compounds with groups which are reactive towards isocyanates, (c) propellants, (d) catalysts, (e) plasticizers and optionally (f) other additives in order to form a reaction mixture, which is applied onto a surface and is cured in order to form an insulation. The compounds with groups (b) which are reactive towards isocyanates contain at least one polyetherol (b1) with a nominal functionality of 4 or more, a content of propylene oxide, based on the total weight of alkylene oxide in the polyetherol (b1), of more than 60 wt.%, and an OH number of at least 300 mg KOH/g, at least one polyetherol (b2) with a nominal functionality of 3.5 or less, a content of prim. OH groups of more than 50%, and an OH number of less than 300 mg KOH/g, at least one polyesterol (b3), and chain extenders and/or crosslinking agents (b4). The invention additionally relates to a polyurethane insulation which can be obtained using a method according to the invention.

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