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1. (WO2017033750) POLARIZING FILM PRODUCTION METHOD
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2017/033750 International Application No.: PCT/JP2016/073558
Publication Date: 02.03.2017 International Filing Date: 10.08.2016
IPC:
G02B 5/30 (2006.01) ,B29C 55/06 (2006.01) ,C08J 5/18 (2006.01) ,B29K 29/00 (2006.01) ,B29L 7/00 (2006.01) ,B29L 11/00 (2006.01)
[IPC code unknown for G02B 5/30][IPC code unknown for B29C 55/06][IPC code unknown for C08J 5/18][IPC code unknown for B29K 29][IPC code unknown for B29L 7][IPC code unknown for B29L 11]
Applicants:
住友化学株式会社 SUMITOMO CHEMICAL COMPANY, LIMITED [JP/JP]; 東京都中央区新川二丁目27番1号 27-1, Shinkawa 2-chome, Chuo-ku, Tokyo 1048260, JP
Inventors:
古谷 勉 FURUYA, Tsutomu; JP
武藤 清 MUTO, Kiyoshi; JP
Agent:
特許業務法人深見特許事務所 FUKAMI PATENT OFFICE, P.C.; 大阪府大阪市北区中之島二丁目2番7号 中之島セントラルタワー Nakanoshima Central Tower, 2-7, Nakanoshima 2-chome, Kita-ku, Osaka-shi, Osaka 5300005, JP
Priority Data:
2015-16402721.08.2015JP
Title (EN) POLARIZING FILM PRODUCTION METHOD
(FR) PROCÉDÉ DE PRODUCTION D'UN FILM DE POLARISATION
(JA) 偏光フィルムの製造方法
Abstract:
(EN) Provided is a method for producing a polarizing film that involves subjecting a polyvinyl alcohol resin film which is 1,000 m or greater in length to at least a stretching process, a dyeing process, and a crosslinking process, wherein the polyvinyl alcohol resin film has an index α of 0.73 or greater, the index being derived by the following expression from the infrared spectroscopic spectrum according to the ATR-IR method: index α = (A1043 - A1160)/(A1093 - A1160). (In the formula, A1043, A1160, and A1093 denote absorbance at wavenumbers 1043, 1160, and 1093 cm-1, respectively.)
(FR) L'invention concerne un procédé de production d'un film de polarisation qui consiste à soumettre un film de résine de poly(alcool vinylique) qui a une longueur de 1 000 m ou plus à au moins un procédé d'étirement, un procédé de teinture et un procédé de réticulation, le film de résine de poly(alcool vinylique) présentant un indice α de 0,73 ou plus, l'indice étant obtenu par l'expression suivante dans le spectre spectroscopique infrarouge selon le procédé de la réflexion totale atténuée infrarouge (ATR-IR) : indice α = (A1043 - A1160)/(A1093 - A1160). (Dans la formule, A1043, A1160 et A1093 représentent l'absorbance à des nombres d'ondes de 1043, 1160 et 1093 cm-1, respectivement.)
(JA) 長さ1000m以上のポリビニルアルコール系樹脂フィルムに対して少なくとも延伸処理、染色処理、及び架橋処理を施して偏光フィルムを製造する方法であって、上記ポリビニルアルコール系樹脂フィルムは、ATR-IR法による赤外分光スペクトルから次式:指標α=(A1043-A1160)/(A1093-A1160)[式中、A1043、A1160及びA1093はそれぞれ、波数1043、1160及び1093cm-1における吸光度である。]で求められる指標αが0.73以上である方法が提供される。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)