会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 3. 发明授权
    • Isocyanurate ring-containing crosslinked polyurethane polyurea
particulate polymer and process for producing the same
    • 含异氰脲酸酯环的交联聚氨酯聚脲颗粒聚合物及其制备方法
    • US5292829A
    • 1994-03-08
    • US838898
    • 1992-02-21
    • Hidetoshi KonnoYoichi TanimotoIchiro MuramatsuMitsuo KaseNoboru Okoshi
    • Hidetoshi KonnoYoichi TanimotoIchiro MuramatsuMitsuo KaseNoboru Okoshi
    • C08G18/00C08G18/08C08G18/10C08G18/32C08G18/42C08G18/79C08J3/03C08L75/02
    • C08G18/791C08G18/0866C08G18/10C08G18/3225C08G18/4269Y10S525/902Y10S528/902Y10T428/2982
    • A crosslinked polyurethane polyurea spherically particulate polymer having an average particle diameter of 0.1 to 500 .mu.m, wherein the polymer molecule contains an isocyanurate ring in an amount of 10 to 30% by weight is disclosed. A process for producing the crosslinked polyurethane polyurea spherically particulate polymer is also disclosed. The process comprises the steps of: reacting an isocyanurate ring-containing polyisocyanate compound with a polyhydroxy compound to form an organic phase capable of forming a three-dimensional crosslinked structure due to the reaction, wherein the amount of isocyanate groups in the polyisocyanate compound is stoichiometrically larger than that of hydroxyl groups in the polyhydroxy compound; finely dispersing the organic phase into water; and adding a polyamine to the dispersion to make interfacial polymerization between the organic phase and the polyamine and a polyurethane-forming reaction within particles, wherein the amount of the polyamine is stoichiometrically equivalent to or smaller than the stoichiometrical excess of isocyanate groups. The particulate polymer is excellent in solvent resistance and has a completely spherical shape without wrinkle on the particle surface. The particulate polymer has a good toughness and mechanical properties. Further, the particulate polymer has no reactive isocyanate group in the polymer molecule.
    • 公开了平均粒径为0.1〜500(my)m的交联聚氨酯聚脲球形聚合物,其中聚合物分子含有10〜30重量%的异氰脲酸酯环。 还公开了制备交联聚氨酯聚脲球形聚合物的方法。 该方法包括以下步骤:使含异氰脲酸酯环的多异氰酸酯化合物与多羟基化合物反应,形成能够由于反应形成三维交联结构的有机相,其中多异氰酸酯化合物中的异氰酸酯基团的化学计量 大于多羟基化合物中羟基的数目; 将有机相精细分散于水中; 并向分散体中加入多胺以在有机相和多胺之间进行界面聚合,并在颗粒内形成聚氨酯形成反应,其中多胺的化学计量等于或小于异氰酸酯基团的化学计量过量。 颗粒聚合物耐溶剂性优异,并且具有完全球形,在颗粒表面没有皱纹。 颗粒聚合物具有良好的韧性和机械性能。 另外,粒子状聚合物在聚合物分子中不具有活性异氰酸酯基。