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公开(公告)号：US20170239899A1
公开(公告)日：2017-08-24
申请号：US15587778
申请日：2017-05-05
Applicant: MITSUBISHI CHEMICAL CORPORATION , NITTO DENKO CORPORATION
Inventor： Tomohiko TANAKA , Michiaki FUJI , Nao MURAKAMI , Takashi SHIMIZU
Abstract: A polycarbonate resin film of the present invention is formed from a polycarbonate resin which contains at least a constitutional unit derived from a dihydroxy compound having a bonded structure represented by the following structural formula (1) and satisfies the following expression (2) when subjected to a tensile test at a standard stretching temperature for the polycarbonate resin and at a pulling speed (strain rate) of 1,000%/min. [Chem. 1] CH2—O (1) (No hydrogen atom is bonded to the oxygen atom contained in the structural formula (1).) 0.9≦[(lower yield stress in tension)/(upper yield stress in tension)]≦1 (2)
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2.发明申请公开(公告)号：US20170031060A1
公开(公告)日：2017-02-02
申请号：US15294040
申请日：2016-10-14
Applicant: NITTO DENKO CORPORATION , Mitsubishi Chemical Corporation
Inventor： Shingo NAMIKI , Yuuichi HIRAMI , Hisatoshi UEHARA , Hiroyuki HAYASHI , Takashi SHIMIZU , Hiroshi SUMIMURA , Nao MURAKAMI
Abstract: The retardation film of the present invention contains a resin having positive refractive index anisotropy and containing at least one bonding group of a carbonate bond and an ester bond and one or more structural units selected from the group consisting of a structural unit represented by the general formula (1) and a structural unit represented by the general formula (2), in which the value of wavelength dispersion (R450/R550) as a ratio of retardation R450 at a wavelength of 450 nm to retardation R550 at a wavelength of 550 nm is more than 0.5 and less than 1.0: (in formula (1) and formula (2), definitions of R1 to R9 are the same as in the description).
Abstract translation: （式（1）和式（2）中，R 1〜R 9的定义与说明书相同）。
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3.发明申请METHOD FOR PRODUCING PHASE-DIFFERENCE FILM AND METHOD FOR PRODUCING CIRCULARLY POLARIZING PLATE 审中-公开生产相差膜的方法及生产圆形极化板的方法公开(公告)号：US20160052216A1
公开(公告)日：2016-02-25
申请号：US14780717
申请日：2014-03-12
Applicant: NITTO DENKO CORPORATION
Inventor： Takashi SHIMIZU , Satoshi HIRATA , Seiji KONDO , Nao MURAKAMI
IPC: B29D11/00
CPC classification number: B29D11/00644 , B29C55/045 , B29D11/00788 , B29K2069/00 , B29K2995/0018 , G02B5/3033 , G02B5/3083 , G02F2001/133638
Abstract: Provided is a method by which a retardation film suppressed in biaxiality, having a small Nz coefficient, and having a slow axis in an oblique direction can be produced with high production efficiency. The production method for a retardation film of the present invention includes: holding left and right end portions of a film with left and right variable pitch-type clips configured to have clip pitches changing in a longitudinal direction, respectively; preheating the film; reducing, under a state in which the clip pitch of the clips on one side out of the left and right clips is kept constant, the clip pitch of the clips on another side to obliquely stretch the film; and releasing the film from being held with the clips.
Abstract translation: 提供一种以高生产率生产双轴抑制的具有小的Nz系数并且具有沿倾斜方向的慢轴的相位差薄膜的方法。 本发明的延迟膜的制造方法包括：保持膜的左右端部，其左右可变节距型夹具被构造成分别在纵向方向上具有夹紧间距变化; 预热胶片; 在左侧和右侧夹子之间的一侧上的夹子的夹子间距保持不变的状态下，另一侧的夹子的夹子间距倾斜地拉伸; 并释放胶片不被夹子夹住。
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4.发明申请公开(公告)号：US20160052215A1
公开(公告)日：2016-02-25
申请号：US14780673
申请日：2014-03-12
Applicant: NITTO DENKO CORPORATION
Inventor： Takashi SHIMIZU , Satoshi HIRATA , Seiji KONDA , Nao MURAKAMI
CPC classification number: B29D11/00644 , B29C55/045 , B29C55/16 , B29C55/20 , B29K2069/00 , B29L2011/0066 , G02B5/30 , G02B5/3083
Abstract: The present invention provides a method capable of producing a retardation film having an elongated shape, having high uniaxiality and a high in-plane alignment property, and having a slow axis in an oblique direction with high production efficiency. The production method for a retardation film of the present invention includes: holding left and right end portions of a film with left and right variable pitch-type clips configured to have clip pitches changing in a longitudinal direction, respectively; preheating the film; increasing the clip pitch of the clips on one side and reducing the clip pitch of the clips on another side, while extending a distance between the left and right clips, to obliquely stretch the film; maintaining or reducing the clip pitch of the clips on the one side and increasing the clip pitch of the clips on the another side so that the clip pitches of the left and right clips are equal to each other, while extending the distance between the left and right clips, to obliquely stretch the film; and releasing the film from being held with the clips.
Abstract translation: 本发明提供一种能够制造具有高单轴性和高面内取向性的细长形状的延迟膜，并且具有生产效率高的倾斜方向的慢轴的方法。 本发明的延迟膜的制造方法包括：保持膜的左右端部，其左右可变节距型夹具被构造成分别在纵向方向上具有夹紧间距变化; 预热胶片; 在一侧增加夹子的夹子间距并且在另一侧减小夹子的夹子间距，同时延伸左和右夹子之间的距离，以使薄膜倾斜地拉伸; 保持或减小夹子在一侧的夹子间距，并增加另一侧的夹子的夹子间距，使得左和右夹子的夹子间距彼此相等，同时延伸左侧与 右剪，斜拉伸影片; 并释放胶片不被夹子夹住。
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公开(公告)号：US20240377576A1
公开(公告)日：2024-11-14
申请号：US18553102
申请日：2022-03-16
Applicant: NITTO DENKO CORPORATION
Inventor： Hiroshi OHMURA , Takashi SHIMIZU
Abstract: A plastic optical fiber suitable for reducing interfacial delamination between a clad and a coating layer. The plastic optical fiber includes: a core; a clad disposed on an outer circumference of the core and including a fluorine-containing resin; and a coating layer disposed on an outer circumference of the clad, the coating layer consisting of a material. The material has an elongation, as measured by a given test, of 0.05% or less.
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Patent Agency Ranking
6.发明申请公开(公告)号：US20170031062A1
公开(公告)日：2017-02-02
申请号：US15294158
申请日：2016-10-14
Applicant: NITTO DENKO CORPORATION , Mitsubishi Chemical Corporation
Inventor： Shingo NAMIKI , Yuuichi HIRAMI , Histatoshi UEHARA , Hiroyuki HAYASHI , Takashi SHIMIZU , Hiroshi SUMIMURA , Nao MURAKAMI
Abstract: The retardation film of the present invention contains a thermoplastic resin and is constituted of a single layer. A value of wavelength dispersion (R450/R550) that is a ratio of a retardation R450 at a wavelength of 450 nm and a retardation R550 at a wavelength of 550 nm is 0.70 or more and 0.85 or less; and a photoelastic coefficient is 14×10−12 Pa−1 or less.
Abstract translation: 本发明的延迟膜含有热塑性树脂，由单层构成。 波长为450nm的延迟量R450与波长550nm的延迟值R550的波长色散值（R450 / R550）为0.70以上0.85以下。 光弹性系数为14×10-12Pa-1以下。
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公开(公告)号：US20250084191A1
公开(公告)日：2025-03-13
申请号：US18726943
申请日：2023-01-10
Applicant: NITTO DENKO CORPORATION
Inventor： Yoshihide KAWAGUCHI , Takashi SHIMIZU , Takeshi SAITO , Akifumi KIDO
Abstract: One aspect of the present invention is a fluorine resin refining method. The method includes refining a fluorine resin by bringing the fluorine resin into contact with a fluorinating agent at a temperature of (Tg1−35)° C. or higher, where Tg1 is the glass transition temperature of the fluorine resin, and the fluorine resin includes a first fluorine-containing aliphatic ring structure in a molecular chain. The present invention makes it possible to produce a fluorine resin suitable for use in a plastic optical fiber. The first fluorine-containing aliphatic ring structure may have a dioxolane skeleton.
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8.发明申请RETARDATION FILM, AND CIRCULARLY POLARIZING PLATE AND IMAGE DISPLAY DEVICE EACH USING THE SAME 审中-公开延迟膜和使用其的圆形极化板和图像显示装置公开(公告)号：US20140285888A1
公开(公告)日：2014-09-25
申请号：US14211777
申请日：2014-03-14
Applicant: NITTO DENKO CORPORATION , MITSUBISHI CHEMICAL CORPORATION
Inventor： Tomohiko TANAKA , Masashi YOKOGI , Shingo NAMIKI , Yuuichi HIRAMI , Masanori YAMAMOTO , Nao MURAKAMI , Toshiyuki IIDA , Takashi SHIMIZU
CPC classification number: H05B33/22 , B29D11/00644 , C08G64/1608 , C08G64/183 , C08J5/18 , C08J2369/00 , G02B1/04 , G02B5/3083 , H01L51/5281 , C08L69/00 , C08L69/005
Abstract: A retardation film insusceptible to color dropout or color shift even under environment of severe temperature or humidity conditions and capable of being produced by a melt film-forming method. The retardation film is obtained by molding at least one polymer selected from polycarbonate and polyester carbonate each having a glass transition temperature of 110 to 180° C. and satisfies the relationships of the following formulae (A) and (B): 0.7
Abstract translation: 即使在严酷的温度或湿度条件的环境下，也能够通过熔融成膜法产生颜色偏差或颜色偏移的延迟膜。 延迟膜是通过将至少一种选自玻璃化转变温度为110〜180℃的聚碳酸酯和聚酯碳酸酯的聚合物成型而得到的，满足下述式（A）和（B）的关系：0.7
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公开(公告)号：US20240210615A1
公开(公告)日：2024-06-27
申请号：US18553090
申请日：2022-03-29
Applicant: NITTO DENKO CORPORATION
Inventor： Takashi SHIMIZU , Hiroshi OHMURA , Takeshi SAITO
CPC classification number: G02B6/02033 , B29D11/00663 , G02B6/44528
Abstract: A plastic optical fiber includes a core and a clad disposed on an outer circumference of the core. The core includes a first resin, and the clad includes a second resin. The first resin has a first glass transition temperature Tg1 of 120° C. or higher. The second resin has a second glass transition temperature Tg2 of 120° C. or higher. When the plastic optical fiber bent once 180 degrees at 25° C. has a curvature radius R and a minimum of the curvature radius R is defined as a curvature radius at which a crack does not occur in a bent portion of the plastic optical fiber, the minimum is 5 mm or less.
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10.发明申请公开(公告)号：US20170031061A1
公开(公告)日：2017-02-02
申请号：US15294055
申请日：2016-10-14
Applicant: NITTO DENKO CORPORATION , Mitsubishi Chemical Corporation
Inventor： Shingo NAMIKI , Yuuichi HIRAMI , Hisatoshi UEHARA , Hiroyuki HAYASHI , Takashi SHIMIZU , Hiroshi SUMIMURA , Nao MURAKAMI
Abstract: An object of the present invention is to provide a retardation film excellent in various properties such as optical properties, heat resistance, mechanical properties, and reliability. The present invention relates to a retardation film containing a thermoplastic resin and composed of a single layer, in which the retardation film has a value of wavelength dispersion that is a ratio of retardations at a wavelength of 450 nm and at a wavelength of 550 nm being 0.75 or more and 0.92 or less; a birefringence at a wavelength of 550 nm and the wavelength dispersion satisfy a relationship of Δn≧0.0140×(R450/R550)−0.0082; and a photoelastic coefficient is 25×10−12 Pa−1 or less.
Abstract translation: 本发明的目的在于提供光学特性，耐热性，机械性能，可靠性等各种性能优异的相位差膜。 本发明涉及含有热塑性树脂并由单层构成的相位差膜，其中相位差膜具有作为波长450nm和波长550nm的延迟率的波长色散值为 0.75以上且0.92以下; 在波长550nm处的双折射和波长色散满足Δn≥0.0140×（R450 / R550）-0.0082的关系; 光弹性系数为25×10〜12Pa-1以下。
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