METHOD FOR PRODUCING A HARD POLYURETHANE-POLYISOCYANURATE FOAMED MATERIAL
    5.
    发明申请
    METHOD FOR PRODUCING A HARD POLYURETHANE-POLYISOCYANURATE FOAMED MATERIAL 有权
    生产硬质聚氨酯 - 聚异氰酸酯泡沫材料的方法

    公开(公告)号:US20150051301A1

    公开(公告)日:2015-02-19

    申请号:US14377072

    申请日:2013-02-05

    摘要: The present invention relates to a process for producing a rigid polyurethane-polyisocyanurate foam C, comprising the step of reacting (i) an isocyanate-terminated prepolymer B with (ii) an activator component A comprising at least one trimerisation catalyst A1 and at least one blowing agent A3 in a reaction mixture to form a foam, characterised in that—there is used an isocyanate-terminated prepolymer B obtained from a reaction of an isocyanate B1 having a mean isocyanate functionality of from ≧2.3 to ≦2.9 with a polyol component B2, and—the activator component A comprises water as the blowing agent A3 in an amount of from ≧5 wt. % to ≦50 wt. %,—the isocyanate index in the reaction mixture is in a range of from ≧400 to ≦500, and—the isocyanate content of the prepolymer B is in a range of from ≧21 wt. % to ≦30 wt. %, based on the total mass of the prepolymer B, and—wherein in the reaction of the prepolymer B and the activator component A a conversion contribution to polyisocyanurate of ≦75% is achieved. Rigid foams C so produced have good flame retarding properties while at the same time having good insulating properties and stability properties. The present invention relates further to a rigid polyisocyanurate foam C produced by the process according to the invention, to the use of such a rigid polyisocyanurate foam C in the production of heat-insulating structural components, and to a heat-insulating structural component comprising such a rigid polyurethane-polyisocyanurate foam.

    摘要翻译: 本发明涉及一种制备刚性聚氨酯 - 聚异氰脲酸酯泡沫C的方法,其包括使(i)异氰酸酯封端的预聚物B与(ii)包含至少一种三聚催化剂A1和至少一种 在反应混合物中形成泡沫的发泡剂A3,其特征在于,使用异氰酸酯封端的预聚物B,其由平均异氰酸酯官能度为≥2.3至< lE; 2.9的异氰酸酯B1与多元醇组分 B2和 - 活化剂组分A包含作为发泡剂A3的水,其量为≥5wt。 %至≦̸ 50wt。 %, - 反应混合物中的异氰酸酯指数在≥400至< NlE; 500的范围内, - 预聚物B的异氰酸酯含量在≥21wt。 %至≦̸ 30wt。 %,基于预聚物B的总质量,其中在预聚物B和活化剂组分A的反应中,实现了对于聚异氰脲酸酯的转化率为75%。 如此制造的刚性泡沫体C具有良好的阻燃性能,同时具有良好的绝缘性能和稳定性。 本发明还涉及通过本发明的方法生产的刚性聚异氰脲酸酯泡沫C,以及在制造绝热结构组分时使用这种刚性聚异氰脲酸酯泡沫C,以及包含这些的绝热结构组分 硬质聚氨酯 - 聚异氰脲酸酯泡沫。