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    • 3. 发明申请
    • Optical recording material
    • 光学记录材料
    • US20060097225A1
    • 2006-05-11
    • US11315361
    • 2005-12-23
    • Yuji YamamotoYuriko KaidaMotoshi OnoHiroshi SakamotoHiromi Sakurai
    • Yuji YamamotoYuriko KaidaMotoshi OnoHiroshi SakamotoHiromi Sakurai
    • C09K19/52C09K19/32G02F1/13G11B7/24
    • C09K19/3491C09K19/3441G11B7/25
    • A novel photochromic liquid crystal comprising a diarylethene compound having both photochromic properties and liquid crystallinity. This compound is a photochromic diarylethene compound having a mesogen group in each of the two aryl groups. The photochromic liquid crystal provides a large change in birefringence by photoisomerization or phase transition, and has high durability against repeated changes in birefringence. A side-chain polymer liquid crystal containing the above photochromic liquid crystal is useful as an optical recording material. Such an optical recording material is capable of performing light modulation by irradiation with light near Tc thereof, and is applicable to photo operator devices, optical memories, and the like. Further, the optical recording material is useful as a material for a recording layer of an optical recording medium such as an optical disk or an optical memory card.
    • 一种新型的光致变色液晶,其包含具有光致变色特性和液晶性的二芳基乙烯化合物。 该化合物是在两个芳基各自具有介晶基团的光致变色二芳基烯化合物。 光致变色液晶通过光异构化或相变提供双折射的大的变化,并且对双折射的反复变化具有高的耐久性。 含有上述光致变色液晶的侧链聚合物液晶可用作光学记录材料。 这种光记录材料能够通过在其Tc附近的光照射进行光调制,并且可应用于照相操作装置,光存储器等。 此外,光记录材料可用作光记录介质如光盘或光存储卡的记录层的材料。
    • 8. 发明申请
    • Photocurable composition, process for producing fine patterned product and optical element
    • 可光固化组合物,精细图案产品和光学元件的制造方法
    • US20100259821A1
    • 2010-10-14
    • US12659934
    • 2010-03-25
    • Yuriko KaidaHiroshi SakamotoHirotsugu Yamamoto
    • Yuriko KaidaHiroshi SakamotoHirotsugu Yamamoto
    • G02B5/30C08F2/46G02B1/12B32B3/30
    • C08F2/44C08F2/48C08F290/06C08F292/00C09D4/00G02B5/3058Y10S977/887Y10T428/24479
    • To provide a photocurable composition with which a fine pattern molded product on which a fine pattern of a mold is highly precisely transferred can efficiently be produced.A photocurable composition comprising 100 parts by mass of a photocurable monomer (A), from 5 to 60 parts by mass of a colloidal silica (B) (solid content) having an average particle size of at most 200 nm, and from 0.1 to 10 parts by mass of a photopolymerization initiator (C), wherein the photocurable monomer (A) comprises a multifunctional monomer (A1) having at least 3 (meth)acryloyloxy groups in one molecule and a bifunctional monomer (A2) having two (meth)acryloyloxy groups in one molecule, at least one compound belonging to the multifunctional monomer (A1) or the bifunctional monomer (A2) has a hydroxy group, and the ratio of the total amount (mol) of hydroxy groups to the total amount (mol) of the multifunctional monomer (A1) and the bifunctional monomer (A2) is at least 10%.
    • 为了提供一种光固化性组合物,可有效地制造精细图案模制品,精细图案模具高度精确地转印到其上。 一种光固化性组合物,其包含100质量份的光固化性单体(A),5〜60质量份的平均粒径为200nm以下的胶态二氧化硅(B)(固体成分)和0.1〜10 质量份的光聚合引发剂(C),其中,光固化性单体(A)含有1分子中具有3个以上(甲基)丙烯酰氧基的多官能单体(A1)和具有两个(甲基)丙烯酰氧基的双官能单体 一个分子中的至少一种化合物,至少一种属于多官能单体(A1)或双官能单体(A2)的化合物具有羟基,羟基的总量(mol)与总量(mol)的比例 多官能单体(A1)和双官能单体(A2)为至少10%以上。