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    • 5. 发明申请
    • PHOTOCURABLE SILICONE COMPOSITION AND CURED PRODUCT THEREOF
    • 可光固化的硅氧烷组合物及其固化产物
    • WO2017155919A1
    • 2017-09-14
    • PCT/US2017/021052
    • 2017-03-07
    • DOW CORNING CORPORATIONDOW CORNING TORAY CO., LTD.
    • YOOK, Ju YoungYOSHITAKE, Makoto
    • C09D183/04C08L83/04
    • The photocurable silicone composition of the present invention comprises: (A) an organopolysiloxane represented by the average composition formula: R 1 a R 2 b SiO (4-a-b) /2 , wherein, R 1 is an alkenyl group having from 2 to 12 carbons, R 2 is an alkyl group having from 1 to 12 carbons, an aryl group having from 6 to 12 carbons, or an aralkyl group having from 7 to 12 carbons; provided that, at least 30 mol% of R 2 are the aryl groups or the aralkyl groups; and "a" and "b" are positive numbers satisfying: 1 ≤ a + b ≤ 2.5 and 0.001 ≤ a/(a + b) ≤ 0.2; (B) an organic compound having at least two ether bonds and at least one aliphatic carbon-carbon double bond in a molecule; (C) a compound having at least two thiol groups in a molecule; (D) a photoradical initiator having a phosphorus atom; and (E) a hindered phenol compound. The present composition solves a problem in that the part where the light is shielded stays uncured, suppresses reduction in transmittance due to coloring or haze at high temperatures or in high temperature/high humidity conditions, and achieves excellent coatability.
    • 本发明的可光固化的硅氧烷组合物包含:(A)由平均组成式表示的有机聚硅氧烷:R 1 1 R 1 R 2 (4-ab)/ 2,其中,R 1是一个 具有2至12个碳的烯基,R 2是具有1至12个碳的烷基,具有6至12个碳的芳基或具有7至12个碳的芳烷基; 条件是至少30mol%的R 2是芳基或芳烷基; 和“a” 和“b” 是满足以下条件的正数:1≤a+b≤2.5且0.001≤a/(a + b)≤0.2; (B)分子中具有至少两个醚键和至少一个脂肪族碳 - 碳双键的有机化合物; (C)分子中具有至少两个巯基的化合物; (D)具有磷原子的光自由基引发剂; 和(E)受阻酚化合物。 本发明的组合物解决了这样的问题,即光屏蔽部分保持未固化,抑制由于高温或高温/高湿度条件下的着色或雾度导致的透射率降低,并且实现优异的可涂布性。