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Kawatsuki N.,University of Hyogo | Shoji H.,University of Hyogo | Yamaguchi K.,University of Hyogo | Kondo M.,University of Hyogo | Tsubaki K.,Osaka Organic Chemical Ind. Ltd.
Polymer | Year: 2011

Polymethacrylate copolymers, which have hexamethylene spacer groups terminated with 4-methoxyphenyl-4′-oxycinnamate (MPC) and 4-oxybenzoic acid (BA) in the side chain, were synthesized. Thin films underwent thermally enhanced photoinduced cooperative molecular reorientation using linearly polarized ultraviolet (LPUV) light and subsequent annealing. Moreover, low exposure energy (4-80 mJ cm-2) and annealing temperature (<140 °C) provided sufficient cooperative molecular reorientation of both side groups with a large reorientational order (S > 0.5). Tuning the copolymer composition adjusted the birefringence (n) of homogeneously reoriented films between 0.10 and 0.22 at 517 nm. Finally, a phase retarder (nd = 130 nm) using an oriented copolymer on a triacetylcellulose (TAC) film substrate, which exhibited a thermal stability up to 140 °C, was fabricated. © 2011 Elsevier Ltd. All rights reserved.


Matsuyama T.,Osaka Organic Chemical Ind. Ltd. | Kobayashi T.,Osaka Organic Chemical Ind. Ltd. | Tsubaki K.,Osaka Organic Chemical Ind. Ltd. | Watanabe T.,Osaka Organic Chemical Ind. Ltd. | Mori Y.,Osaka Organic Chemical Ind. Ltd.
48th Annual SID Symposium, Seminar, and Exhibition 2010, Display Week 2010 | Year: 2010

A patterned retarder is important in LCDs and 3D displays. As for the patterning method of retarder, developing in Alkali aqueous solution was very difficult. We have developed the patterned retarder consisting of UV-curable liquid crystal materials of the new type that developing is possible in Alkali aqueous solution.


Patent
Osaka Organic Chemical Ind. Ltd. | Date: 2016-05-04

A (meth)acrylate production system having a reactor (A1) provided with a distillation column (2) and a distillation apparatus (B3) provided with a distillation column (4). A condensing apparatus (6) is provided at the top of the distillation column (2). The condensing apparatus (6) and a switching apparatus (7) are connected via a pipe (5b), the switching apparatus (7) and the top of the distillation column (2) are connected via a pipe (5c), the switching apparatus (7) and a liquid separation apparatus (8) are connected via a pipe (5d), the top of the liquid separation apparatus (8) and the distillation column (2) are connected via pipe (5e), the bottom of the liquid separation apparatus (8) and the distillation apparatus (B3) are connected via a pipe (5f), the top of the distillation column (4) is connected with a condensing apparatus (9) via a pipe (10a), the condensing apparatus (9) and a switching apparatus (11) are connected via a pipe (10b), the switching apparatus (11) and the top of the distillation column (4) are connected via a pipe (10c), the switching apparatus (11) and a recovery unit (12) are connected via a pipe (10d), and the bottom of the distillation apparatus (B3) is connected with the pipe (5d) between the switching apparatus (7) and the liquid separation apparatus (8) via a pipe (10e).


Patent
Osaka Organic Chemical Ind. Ltd. | Date: 2016-02-17

Provided is a composition containing, as an alkane polyol, a C_(4-18) 1,2-alkane polyol in which the degradation over time of the C_(4-18) 1,2-alkane polyol, which has inferior chemical stability and degrades easily, is suppressed, the composition being suitable for use in a cosmetic, an inkjet ink, a fiber or a coating material such as a paint. A composition containing 1,2-alkane polyol that can be used in a cosmetic, an inkjet ink, a raw material for fibers or a coating material, the alkane polyol being a C_(4-18) 1,2-alkane polyol, and the composition containing a radical scavenger.


Patent
Osaka Organic Chemical Ind. Ltd. | Date: 2015-04-15

A process for preparing 4-hydroxybutyl acrylate by transesterifying an alkyl acrylate with 1,4-butanediol in the presence of a dialkyltin oxide such that each of the alkyl groups has 4 to 8 carbon atoms, characterized in that the amount of the dialkyltin oxide is adjusted to 0.00001 to 0.01 moles per one mole of the alkyl acrylate.

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