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1. WO2022004861 - METHOD FOR MANUFACTURING OPTICAL FILM CONTAINING POLYIMIDE-BASED RESIN

Publication Number WO/2022/004861
Publication Date 06.01.2022
International Application No. PCT/JP2021/025023
International Filing Date 01.07.2021
IPC
B29C 41/12 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
41Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
02for making articles of definite length, i.e. discrete articles
12Spreading-out the material on a substrate
C08G 73/10 2006.1
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
73Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen or carbon, not provided for in groups C08G12/-C08G71/238
06Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule; Polyhydrazides; Polyamide acids or similar polyimide precursors
10Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
C08J 5/18 2006.1
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H142
5Manufacture of articles or shaped materials containing macromolecular substances
18Manufacture of films or sheets
G02B 1/04 2006.1
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
1Optical elements characterised by the material of which they are made; Optical coatings for optical elements
04made of organic materials, e.g. plastics
G02B 5/30 2006.1
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5Optical elements other than lenses
30Polarising elements
Applicants
  • 住友化学株式会社 SUMITOMO CHEMICAL COMPANY, LIMITED [JP]/[JP]
  • ザイマージェン インコーポレイテッド ZYMERGEN INC. [US]/[US]
Inventors
  • 桜井 孝至 SAKURAI, Takashi
  • ズームベルト・アーリヤン ZOOMBELT, Arjan
  • カースズリス・ジャスティン KERSZULIS, Justin
Agents
  • 山尾 憲人 YAMAO, Norihito
  • 森住 憲一 MORIZUMI, Ken-Ichi
Priority Data
2020-11518302.07.2020JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) METHOD FOR MANUFACTURING OPTICAL FILM CONTAINING POLYIMIDE-BASED RESIN
(FR) MÉTHODE DE FABRICATION D'UN FILM OPTIQUE CONTENANT UNE RÉSINE À BASE DE POLYIMIDE
(JA) ポリイミド系樹脂を含む光学フィルムの製造方法
Abstract
(EN) The present invention pertains to a method for manufacturing an optical film, the method comprising: step (I) for dissolving a polyimide-based resin in a solvent to prepare a varnish; step (II) for applying the varnish onto a substrate to form a coating film; and step (III) for drying the coating film to form a film, wherein the polyimide-based resin contains a structural unit derived from an aliphatic diamine, the solvent in step (I) has a moisture absorption rate per unit area of at least 25 mass%/h·m2 as measured by the Karl Fischer method, and time T from the completion of the formation of the coating film in step (II) to the start of drying of the coating film in step (III) satisfies equation (A) [in equation (A), Vs represents the moisture absorption rate per minute (mass%/min) of the solvent as determined by the Karl Fischer method].
(FR) La présente invention concerne une méthode de fabrication d'un film optique, la méthode comprenant : une étape (I) pour dissoudre une résine à base de polyimide dans un solvant pour préparer un vernis ; une étape (II) pour appliquer le vernis sur un substrat pour former un film de revêtement ; et une étape (III) pour sécher le film de revêtement pour former un film, la résine à base de polyimide contenant une unité structurale dérivée d'une diamine aliphatique, le solvant dans l'étape (I) a un taux d'absorption d'humidité par unité de surface d'au moins 25 % en masse/h·m2 tel que mesuré par la méthode de Karl Fischer, et le temps T à partir de l'achèvement de la formation du film de revêtement dans l'étape (II) au début du séchage du film de revêtement dans l'étape (III) satisfait l'équation (A) [dans l'équation (A), Vs représente le taux d'absorption d'humidité par minute (% en masse/min) du solvant tel que déterminé par la méthode de Karl Fischer].
(JA) 本発明は、ポリイミド系樹脂を溶媒に溶解してワニスを調製する工程(I)、前記ワニスを基材に塗布して塗膜を形成する工程(II)、および該塗膜を乾燥させてフィルムを形成する工程(III)を含む光学フィルムの製造方法であって、 前記ポリイミド系樹脂は脂肪族系ジアミン由来の構成単位を含み、 前記工程(I)における溶媒の、カール・フィッシャー法により測定される単位面積当たりの吸湿速度が25質量%/h・m以上であり、 工程(II)において塗膜の形成を終えてから、工程(III)において塗膜の乾燥を開始するまでの時間Tは、下記式(A)[式(A)中、Vsはカール・フィッシャー法により求めた、溶媒の1分当たりの吸湿速度(質量%/分)を示す] を満たす光学フィルムの製造方法に関する。
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