Invention Grant
- Patent Title: Polymer, resin composition, light control material, optical waveguide material, athermal optical element, color display element, and optical material
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Application No.: US15921104Application Date: 2018-03-14
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Publication No.: US11274174B2Publication Date: 2022-03-15
- Inventor: Koji Iwasaki
- Applicant: Ricoh Company, Ltd.
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Grüneberg and Myers PLLC
- Priority: JP2015-181767 20150915
- Main IPC: C08F220/54
- IPC: C08F220/54 ; C08F220/56 ; C08F220/28 ; C08L101/12 ; G02B1/04 ; G02B6/12 ; C08L71/02 ; C08F220/30
Abstract:
Provided is a polymer including a temperature-responsive unit in a molecule, wherein the polymer has a refractive index difference (B−A) of 0.01 or greater but 0.2 or less between a minimum refractive index A of the polymer in a temperature range of 5 degrees C. or higher but lower than 30 degrees C. and a maximum refractive index B of the polymer in a temperature range of 30 degrees C. or higher but lower than 50 degrees C.
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