Production of sound-absorbing polyurethane foams having an adhesive surface
    4.
    发明授权
    Production of sound-absorbing polyurethane foams having an adhesive surface 有权
    生产具有粘合剂表面的吸声聚氨酯泡沫

    公开(公告)号:US06337356B1

    公开(公告)日:2002-01-08

    申请号:US09578179

    申请日:2000-05-24

    IPC分类号: C08G1814

    摘要: In a process for producing sound-absorbing PUR foams having an adhesive surface by reacting organic and/or modified organic polyisocyanates (a) with a polyetherol mixture (b) and, if desired, further compounds (c) bearing hydrogen atoms which are reactive toward isocyanates, in the presence of water and/or other blowing agents (d), catalysts (e) and, if desired, further auxiliaries and additives (f), the polyetherol mixture (b) comprises b1) at least one bifunctional to eight-functional polyetherol based on ethylene oxide and propylene oxide and having an OH number of from 20 to 80 mg KOH/g and a proportion of primary OH groups of >50%, b2) at least one polyetherol based on ethylene oxide and propylene oxide and/or butylene oxide and a bifunctional to eight-functional initiator and having an OH number of from 20 to 80 mg KOH/g, where the proportion of ethylene oxide in the polyetherol is >30% by weight, in amounts of from 10 to 50 parts by weight, and b3) at least one polyetherol based on propylene oxide and/or butylene oxide and, if desired, ethylene oxide and a bifunctional to eight-functional initiator and having an OH number of from 30 to 400 mg KOH/g, where the proportion of ethylene oxide in the polyetherol is

    摘要翻译: 在通过使有机和/或改性的有机多异氰酸酯(a)与聚乙烯醇混合物(b)反应生成吸附性PUR泡沫的方法中,如果需要,还需要具有氢原子的化合物(c) 异氰酸酯,在水和/或其它发泡剂(d),催化剂(e)和(如果需要的话)存在下,进一步的助剂和添加剂(f),聚醚醚混合物(b)包括b1)至少一种双官能至八官能 基于环氧乙烷和环氧丙烷的聚乙烯醇,OH数为20至80mg KOH / g,一级OH基团的比例> 50%,b2)至少一种基于环氧乙烷和环氧丙烷的聚醚酯和/或 环氧丁烷和双官能至八官能引发剂,OH值为20至80mg KOH / g,其中聚醚醚基中环氧乙烷的比例> 30重量%,其量为10至50重量份 重量,和b3)至少一种基于的聚醚 环氧丙烷和/或环氧丁烷,如果需要,环氧乙烷和双官能的八官能引发剂,OH值为30-400mg KOH / g,其中环氧乙烷在聚醚中的比例<30% 该方法生产的吸声PUR泡沫可用作阻尼材料。