Title:
光学樹脂材料の製造方法
Document Type and Number:
Japanese Patent JP6764150
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a resin material that is useful for optical applications for which orientation birefringence is extremely small or a desired value, and a technique that allows for stably and reliably producing resin products such as an optical film with reduced temperature dependence of natural birefringence that affects optical properties.SOLUTION: Disclosed is an optical resin material which contains a series of multiple components having the number of component z of 2 or more, as defined under a condition that a dimension number x (x≥1) should be included in counting the number of components, and exhibits reduced temperature dependence of birefringence with an absolute value of a natural birefringence temperature coefficient of 1.0×10(°C) or less at 15-70°C, as obtained as a variation of natural birefringence per 1°C from a measurement result obtained through a process of incrementally controlling temperature of a uniaxially stretched film made of the series of multiple components over a range of 15-70°C and measuring natural birefringence Δnat each temperature. A manufacturing method for the optical resin material, and a film-like optical resin member and polarizing plate made of the optical resin material are also disclosed.SELECTED DRAWING: Figure 1
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Inventors:
Yasuhiro Koike
Akihiro Takaya
Junhisa Oda
Akihiro Takaya
Junhisa Oda
Application Number:
JP2019168225A
Publication Date:
September 30, 2020
Filing Date:
September 17, 2019
Export Citation:
Assignee:
Yasuhiro Koike
Saiden Chemical Co., Ltd.
Saiden Chemical Co., Ltd.
International Classes:
G02B5/30; C08F220/18; G02B1/04
Domestic Patent References:
| JP4280202A | ||||
| JP2002338703A | ||||
| JP8190094A | ||||
| JP8278410A | ||||
| JP8278406A | ||||
| JP8005839A | ||||
| JP2006308682A |
Foreign References:
| WO2010007753A1 | ||||
| WO2010119730A1 | ||||
| US20090237790 |
Attorney, Agent or Firm:
Toshieko Kondo
Chongqing Sugano
Kaoru Okada
Chongqing Sugano
Kaoru Okada