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R&D Reports

vol. 2005 - I (2005.5.31 issue)

Newly Developed LCP Film Fabricated by Solvent-Casting Method

Commercial aromatic liquid-crystalline polymers (hereafter designated as LCP), are known to be unable to dissolve in any common organic solvents except for costly fluorinated reagents. Recently, Sumitomo Chemical succeeded in the development of innovative LCP solvent casting film from its varnish. The casting film exhibits not only low water absorption characteristics, low gas permeability, low dielectric loss at high frequency and high temperature tolerance originated in using LCP as a base material, but also high tear strength because of less anisotropic property in comparison to extruded LCP films. The LCP film by this casting method has many advantages to be applied for the electro devices such as flexible print circuit board, embedded circuit board and so on.
( 4~13 by Satoshi OKAMOTO,Tomoya HOSODA,Shiro KATAGIRI,Shinji OOTOMO,Toyonari ITO )

Activities to Production Support with Visual Information -Technical Development of the Inspection, Measurement, and the Plant-Monitoring-

The image processing technology is widely used for various production fields, for example, object recognition, visual inspection, OK/NG diagnosis and so on. Although the computer technology has advanced rapidly, to make the image processing technique fit for practical use is still extremely difficult issue because the computer does not have comprehensive discretion. The authors have developed total machine vision systems, including the illumination technique, image sensing, image processing, and production improvement techniques, for various production lines. In this paper, the key technology of machine vision is described for each developmental stage. This paper also shows several actual applications involving visual inspection, measurement system, and plant monitoring system.
( 14~23 by Atsuhiko SHINODUKA,Osamu HIROSE,Takashi SUZUKI,Masaya SHIMIZU,Ichiro WASHIZAKI )

Development of Covering Film for High-Performance Horticulture

Japanese agriculture developed with the first consideration that regards on taste and convenience of consumers and met variety of their appetite. On the other hand, for the agricultural technology that has supported mass consumption, there are many problems at a point of "food safety" and "environmental conservation". Therefore new technology development for food safety assuming low resources / energy consumption is demanded recently. In this paper, we review technical thought of the covering film for high-performance horticulture, and give an outline of our action plan that survey the future market and agriculture.
( 24~32 by Taiichi SAKAYA,Jinsho NAMBU,Tomoki KOJIMA )

Research and Development of a Novel Insecticide ‘pyridalyl’

Pyridalyl was discovered and has been under worldwide development by Sumitomo Chemical Co., Ltd. It was already registered in some Asian countries in 2004, including Japan. This novel insecticide exerts excellent control against various lepidopterous and thysanopterous pests on cotton and vegetables. Many existing insecticide-resistant strains of lepidopterous pests can be adequately controlled by pyridalyl as well as susceptible strains. Since pyridalyl develops quite unique insecticidal symptoms, it is considered that pyridalyl has a different mode of action from any other existing insecticides. Its excellent safety to mammals and various beneficial arthropods would provide us with an important tool in IPM (Integrated Pest Management).
( 33~44 by Noriyasu SAKAMOTO,Nobuhito UEDA,Kimitoshi UMEDA,Sanshiro MATSUO,Toru HAGA,Takuo FUJISAWA,Yoshitaka TOMIGAHARA )

Nerve Regeneration in the Central Nervous System by a Semaphorin Inhibitor

It is well known that injured neurons in the central nervous system have only limited capability to regenerate and recover neurological function. We identified a low molecular weight compound, SM-216289, from cultured broth of a fungus isolated from the soil of the Osaka Castle Park as a new semaphorin inhibitor. SM-216289 completely inhibits semaphorin activity at less than 1 µM in vitro. The compound could accelerate neuro-regeneration in the central nervous system in vivo. Semaphorin inhibitors may become innovative drugs to enhance nerve regeneration after spinal cord or brain injury.
( 45~51 by Kazuo KUMAGAI,Kaoru KIKUCHI,Akiyoshi KISHINO,Nobuo HOSOTANI,Akira ITO,Ikutaro SAJI,Toru KIMURA )

Development and Applications of Virtual Screening System -Xsi ver. 1.0-

Virtual screening, a computational method to identify bioactive compounds among a vast number of chemicals, is in use with a great expectation of saving time and cost necessary for actual screening of bioactive compounds. Virtual screening techniques can be categorized in two, namely Ligand-based Drug Design (LBDD) and Structure-based Drug Design (SBDD). Conceptually LBDD and SBDD can be complementary with each other, but have been developed and applied independently. In order to improve the current methods, we developed 'Multiple Docking' method which utilized LBDD and SBDD complementarily. In this review we describe this new method, along with a computer software system 'Xsi' developed to realize the method.
( 52~62 by Kazuto YAMAZAKI,Masaharu KANAOKA )

Emission Gas Analysis

The importance of outgassing analysis, which is the investigation method of the chemical contamination source, has been increasing in the industrial field and the environmental field. The dynamic headspace method, which accelerates the emission rate from sample by heating, is used for the outgassing analysis. The emission rate and the decrease rate of outgassing from material depend on the experiment temperature. In this study, the relationship between the outgassing behavior and the experimental temperature was examined. The modeling formulas of outgassing behavior were proposed using these examined results.
( 63~71 by Tatsuo NONAKA,Noriko OKAWA,Kazutoshi OHASHI,Kikuo TAKEDA )

New Organization for Library Administration and Information Service Facility and Its Activities in Research Laboratories at Sumitomo Chemical Company, Osaka (Kasugade) Area

New library and information service facility were established on April 2003 to serve several research laboratories and works in Osaka, Kasugade Area of Sumitomo Chemical Company. On this occasion those activities distributed in individual laboratories were unified and their operation was entrusted to Sumika Technical Information Service Inc. We have renewed these facilities and their activities on the basis of our concept "Key station of information retrieval in the 21st Century" and "Place comfortable for researchers to bring forth new idea". In this paper we introduce our new organization and the activities.
( 72~81 by Noriko OKA,Ayako HOMMA,Ikuo YASUNAGA,Arata HASHIZUME,Fumiko NORIMUNE )

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