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公开(公告)号:JPWO2009084382A1
公开(公告)日:2011-05-19
申请号:JP2009547970
申请日:2008-12-09
CPC classification number: C08L45/00 , B29C45/0001 , C08L35/06 , C08L65/00 , C08L2666/04 , C08L2666/06
Abstract: [課題]透明性に優れ、レンズ、導光板、拡散板、透明プラスチック基板、マイクロレンズおよび光ディスク基板などの光学部品製造に適した射出成形体および射出成形体用重合体組成物を提供する。[解決手段]式(1)〜(4)の中から選ばれる少なくとも一種の繰り返し単位1〜50モル%と、スチレン由来の繰り返し単位50〜99モル%(ただし、全繰り返し単位の合計を100モル%とする)とを含み、かつゲルパーミエーションクロマトグラフィー(GPC)で測定したポリスチレン換算重量平均分子量(Mw)が、1,000〜50,000であるスチレン系重合体(A)と、環状オレフィン系(共)重合体(B)とを含有する重合体組成物からなる射出成形体。
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公开(公告)号:JP4032405B2
公开(公告)日:2008-01-16
申请号:JP5513299
申请日:1999-03-03
Applicant: Jsr株式会社
IPC: G02F1/1337 , C08L79/08
Abstract: PROBLEM TO BE SOLVED: To obtain a liquid crystal alignment agent having excellent transparency by incorporating a polyamic acid and/or polyimide having a specified content of aromatic rings in the polymer. SOLUTION: The liquid crystal alignment agent used contains a polyamide acid and/or polyimide having
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公开(公告)号:JP3932543B2
公开(公告)日:2007-06-20
申请号:JP23612998
申请日:1998-08-21
Applicant: Jsr株式会社
IPC: C08G73/10 , G02F1/1337 , C08G73/06
Abstract: PROBLEM TO BE SOLVED: To obtain a polyamic acid good in liquid crystal aligning when made into a liquid crystal film, and useful as a liquid crystal aligning agent with a wide pretilt angle by reaction between a specific tetracarboxylic acid dianhydride and a specific diamine compound. SOLUTION: This polyamic acid is obtained by reaction between (A) a tetracarboxylic acid dianhydride including a compound of formula I (R1 is a 5-30C alkyl, halogen, 1-30C haloalkyl or a univalent organic group having steroidal skeleton; X is a single bond or bivalent bond group; R2 and R3 are each H or a univalent organic group; (a) is 1-4; (b) is 0-3) and (B) a diamine compound of the formula H2N-R4-NH2 (R4 is a bivalent organic group). By the way, the compound of formula I is prepared by ene reaction between maleic anhydride and the reaction product formed by Diels-Alder reaction between maleic anhydride and a styrene derivative of formula II.
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