Polyurethane hotmelt adhesives with reactive acrylic copolymers
    10.
    发明授权
    Polyurethane hotmelt adhesives with reactive acrylic copolymers 失效
    聚氨酯热熔胶与反应性丙烯酸共聚物

    公开(公告)号:US5866656A

    公开(公告)日:1999-02-02

    申请号:US937242

    申请日:1997-09-08

    摘要: A solvent-free one-part hot melt polyurethane adhesive or sealant composition which is solid at room temperature comprising 10 to 70% by weight of a urethane prepolymer having an isocyanate content of 0.25 to 15% and an isocyanate index greater than 1 and 30 to 90% by weight of an ethylenically unsaturated polymer having a number average molecular weight of 4,000 to 15,000 as determined by Gel Permeation Chromatography using a PL Gel,Mixed 10 micron column, a Shimadzu Model RID 6A Detector with a tetrahydrofuran carrier solvent at a flow rate of 1 milliliter per minute, the polymer containing sufficient hydroxyl functionality to provide an OH number of 5 to 15.

    摘要翻译: 无溶剂的单组分热固性聚氨酯粘合剂或密封剂组合物,其在室温下为固体,包含10至70重量%的异氰酸酯含量为0.25至15重量%,异氰酸酯指数大于1至30重量% 90重量%的数均分子量为4,000至15,000的烯键式不饱和聚合物,通过使用PL凝胶,混合10微米柱,Shimadzu Model RID 6A检测器的凝胶渗透色谱法,使用四氢呋喃载体溶剂,流速 1分钟,该聚合物含有足够的羟基官能度以提供5至15的OH值。