Unlimited possibilities with photosensitising dyes:

Since their advent in the mid-19 century, chemically synthesized dyes have had many applications. Established in 1947, the Photosensitising Dyes Institute is engaged in the R&D and production of functional dyes. It has developed more than thirty thousand types of dyes that find application in various fields. Hayashibara is an acknowledged leader in the production of complex dye compounds requiring many synthetic steps. The company has production processes that can be customer tailored to provide dyes in quantities ranging from a few grams to hundreds of kilograms. 

Nowadays, dyes are finding applications in many areas other than as standard colouring agents. Some dyes react with light, heat and electricity, offering numerous applications in cutting-edge technologies such as photography, printing, electronics, pharmaceuticals and energy conversion. 

As one of the few photosensitising dye makers, we will pursue the task of expanding the potential of functional dyes. The possibilities look unlimited.

Dyes to colour our life:

Dyes are usually associated with their colouring features. Some of them have the ability to react with light, and are used for several purposes. Recent progress in R&D made possible the reaction of dyes with other energy sources such as heat and electricity. Such abilities expand the potential applications of functional dyes.

In photography and printing, specific Hayashibara dyes are capable to increase the sensitivity of the substance by an effective transfer of light. Our functional dyes are also widely used in the fast growing industry of optical disks and liquid crystal displays. 

Furthermore, noticeable advances are made in the research on the application of dyes in organic EL displays.

Properties and applications for Hayashibara Functional Dyes:

Applications:

Dye to capture key moments in our lives: Silver halide emulsions used in photographic films and papers are sensitive to light only in a range from ultraviolet to blue. This range is significantly different from that of human visual sensitivity. Therefore silver halide emulsions are not suitable for high quality photographs. By adding photosensitising dyes to the emulsions, photographs of better colour tones are obtained. Dyes adhere to silver halide particles and react in a wider range of wavelengths.
Dyes for recording: IT industries have opted for optical disks (CD, CR-R, DVD and DVD-R) for they offer numerous advantages when it comes to recording music, data and pictures. Our acknowledged leadership is based on our expertise in manufacturing high quality dyes widely used for optical disks. We are firmly engaged in the development of disks that will revolutionize the market with their larger memory capacity and other exceptional properties.
Dyes for Displays: Dichroic dyes display different colours, depending on their angle of exposure to light. They are used in liquid crystal displays for in-vehicle devices, measuring instruments, PDAs, electronic note books, etc. As for fluorescent dyes, they are used as luminous material in organic EL displays known for their thin shape, low electricity consumption wide viewing angles and high brightness. Fluorescent dyes are gaining popularity among display makers.
Energy generating dyes: Dye-sensitised solar cells (DSSC) can be considered as next-generation solar cells. The dye converts light into electricity by electron discharge to the semiconductor. Due of their simple structure and low price, DSSC offer hope for a substantial reduction in the cost of solar energy. In cooperation with other research structures, we are committed to develop DSSC, as a future-oriented energy generating system.

Dyes for health products:

Due to their role in physiological activation effects, certain dyes are formulated into pharmaceutical products and cosmetics at Fujita Plant 2U. Our functional dyes are known for their positive effects on cell activation, immune system's stimulation, hair growth, macrophage activities and acne treatment. With our century-long experience in biotechnology, we also manufacture a wide variety of saccharides (i.e. Trehalose) and a stable vitamin C (AA2G™) which have attractive functional properties in food preservation and skincare. In combining our tremendous achievements in Life science and functional dyes, and in close cooperation with other research units of Hayashibara Biochemical Laboratories, we will keep on developing new products intended for use in cosmetics, pharmaceuticals, etc.

For further information please contact:

Hayashibara Biochemical Laboratories, Inc.

Drugs, Cosmetics & Chemicals Development Center

1-2-3 Shimoishii, Okayama 700-0907 JAPAN

Tel: +81 86 801 7721  Fax: +81 86 231 4081

Contact person: Mr. Toshiaki Kageyama: sales@hayashibara.co.jp