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    • 4. 发明申请
    • CURABLE SILICONE RESINS FOR LED ENCAPSULATION
    • 可固化的硅胶树脂用于LED封装
    • WO2012129766A1
    • 2012-10-04
    • PCT/CN2011/072199
    • 2011-03-28
    • HENKEL (CHINA) COMPANY LIMITEDTAN, WenjuanLI, ZhimingXING, WentaoZHANG, LiweiZHANG, Yong
    • TAN, WenjuanLI, ZhimingXING, WentaoZHANG, LiweiZHANG, Yong
    • C08L83/07C08L83/05
    • C09D183/06C08G77/045C08G77/12C08G77/20C08K5/5425C08K5/56C08L83/00C08L83/04H01L23/296H01L33/56H01L2924/0002Y10T428/31663H01L2924/00
    • The present invention relates to a curable organopolysiloxane composition, which comprises: (A) an organocyclosiloxane having alkenyl groups, represented by the following formula (I), wherein n=3, 4 or 5; (B) a hydrosilicone resin of formula (II): (R 1 R 2 R 3 SiO 1/2 ) M ⋅(R 4 R 5 SiO 2/2 ) D ⋅(R 6 SiO 3/2 ) T ⋅(SiO 4/2 ) Q , wherein R 1 to R 5 are identical or different groups selected from organic groups and hydrogen atom, and at least one of R 1 to R 5 is a hydrogen atom directly bonded to a silicon atom, and on average at least two hydrogen atoms directly bonded to silicon atoms are contained in one hydrosilicone resin molecule, R 6 is an organic group identical to or different from R 1 to R 5 , as organic groups R 1 to R 6 may independently be linear/branched alkyl or alkenyl groups having 1-20 carbon atoms or halides thereof; cycloalkyl groups or cycloalkenyl groups having 5-25 carbon atoms or halides thereof; M, T and Q each represents a number ranging from 0 to less than 1, 0 0; and (C) platinum-based catalysts. The present invention also provides a process for preparing transparent silicone resins by hydrosilylation of tetramethyltetravinylcyclotetrasiloxane or trimethyltrivinylcyclotrisiloxane. The silicone resins obtained after curing according to the present invention have good hardness, transparency, UV stability and heat stability.
    • 本发明涉及一种可固化的有机聚硅氧烷组合物,其包含:(A)由下式(I)表示的具有烯基的有机环硅氧烷,其中n = 3,4或5; (B)式(II)的氢硅氧烷树脂:(R1R2R3SiO1 / 2)M·(R4R5SiO2 / 2)D·(R6SiO3 / 2)T·(SiO4 / 2)Q,其中R1〜R5为相同或不同的基团, 有机基团和氢原子,并且R 1〜R 5中的至少一个为与硅原子直接键合的氢原子,并且在一个氢硅氧烷树脂分子中含有平均至少两个与硅原子直接结合的氢原子,R6为有机基团 与R1至R5相同或不同,因为有机基团R 1至R 6可以独立地为具有1-20个碳原子的直链/支链烷基或烯基或其卤化物; 具有5-25个碳原子的环烷基或环烯基或其卤化物; M,T和Q各自表示0至小于1,0 0的数字; 和(C)铂基催化剂。 本发明还提供了通过四甲基四乙烯基环四硅氧烷或三甲基三乙烯基环三硅氧烷的氢化硅烷化制备透明硅氧烷树脂的方法。 根据本发明固化后得到的硅氧烷树脂具有良好的硬度,透明度,UV稳定性和热稳定性。