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    • 4. 发明申请
    • IMPROVED POLYURETHANE FOAM COMPOSITION
    • 改进的聚氨酯泡沫组合物
    • WO2013072380A3
    • 2014-04-03
    • PCT/EP2012072642
    • 2012-11-14
    • SOUDAL
    • VERSTEGEN JOHNVERVOORT BARTGEBOES PETER
    • C08G18/12C08G18/28C08G18/32C08G18/48C08G18/80
    • C08G18/7671C08G18/12C08G18/2805C08G18/2825C08G18/32C08G18/48C08G18/8019C08G18/8029C08G18/8064C08G2101/00C08K5/01C08K5/02C08K5/06C08G18/307
    • Disclosed is a polyurethane foam composition based on polyisocyanates comprising initially at least 20 wt% mMDI and at most 24.5 wt% mTDI, a towards isocyanate polyfunctional and a towards isocyanate monofunctional compound, which composition contains a) less than 1.00 wt% residual free mMDI, b) at least 0.4 wt% total of mMDI of which at least one isocyanate group has been reacted with a monofunctional compound, c) wherein the polyurethane prepolymer composition is having an isocyanate index of at least 105 and at most 350, d) wherein the equivalents ratio of functional groups of the monofunctional compounds relative to the amount of the isocyanate functional groups initially present is at least 6.5%, and e) wherein the equivalents ratio of towards isocyanate tri- and higher functional reactive compounds relative to the isocyanate functional groups initially present is at most 6.50%. Further disclosed is a suitable prepolymer, production methods and uses.
    • 公开了一种基于多异氰酸酯的聚氨酯泡沫组合物,其包含至少20重量%mMDI和至多24.5重量%mTDI,朝向异氰酸酯多官能团和朝向异氰酸酯单官能化合物,所述组合物包含a)小于1.00重量%的残余游离mMDI, b)至少0.4wt%的其中至少一个异氰酸酯基团与单官能化合物反应的mMDI,c)其中聚氨酯预聚物组合物具有至少105和至多350的异氰酸酯指数,d)其中 单官能化合物的官能团相对于最初存在的异氰酸酯官能团的量的当量比为至少6.5%,和e)其中相对于异氰酸酯官能团的异氰酸酯三官能团和更高官能团的反应性化合物的当量比最初为 现在至多6.50%。 进一步公开了合适的预聚物,生产方法和用途。