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    • 97. 发明申请
    • A Photocurable Sealing Agent Composition, Its Preparation and Its Use
    • 光固化密封剂组合物及其制备及其应用
    • US20170058069A1
    • 2017-03-02
    • US15307879
    • 2015-04-16
    • HUNTSMAN ADVANCED MATERIALS (SWITZERLAND) GMBH
    • Riichiro MarutaNaoki Mori
    • C08F290/06
    • An active energy ray-curable sealing agent composition, comprising (A) at least one unsaturated group-containing urethane oligomer having a number average molecular weight Mn of from 1,000 to 100,000 and a degree of unsaturation of from 0.1 to 1 mol/kg obtained by reacting at least one hydrogenated diene-based oligomer diol (a) having a number average molecular weight Mn of from 500 to 3,000, at least one bifunctional epoxy (meth)acrylate (b) containing two hydroxyl groups and two ethylenically unsaturated groups in the molecule thereof, and at least one polyisocyanate (c); (B) at least one (meth)acrylic ester monomer obtained by esterification of (meth)acrylic acid or a (meth)acrylic acid derivative with an alcohol of the formula R—OH, wherein R corresponds to an organic radical containing 1 to 20 carbon atoms and having a molecular weight of 1,000 or less; and (C) at least one photopolymerization initiator; exhibits an improved curability and is suitable for the preparation of gaskets exhibiting low hardness, enhanced flexibility and elongation, enhanced durability, and very low moisture vapor transmission rate for encasing high precision electronic instruments.
    • 一种活性能量射线固化型密封剂组合物,其包含(A)至少一种数均分子量Mn为1,000〜100,000,不饱和度为0.1〜1mol / kg的不饱和基团的氨基甲酸酯低聚物,其通过 至少一种数均分子量Mn为500〜3000的氢化二烯系低聚物二醇(a),至少一种在分子中含有两个羟基和两个烯属不饱和基团的双官能环氧(甲基)丙烯酸酯(b) 和至少一种多异氰酸酯(c); (B)通过(甲基)丙烯酸或(甲基)丙烯酸衍生物与式R-OH的醇酯化得到的至少一种(甲基)丙烯酸酯单体,其中R对应于含有1〜20个 碳原子,分子量为1000以下; 和(C)至少一种光聚合引发剂; 表现出改善的固化性,并且适用于制备显示低硬度,增强的柔韧性和伸长率,增强的耐久性和用于包装高精度电子仪器的非常低的水蒸汽透过率的垫圈。