## Composite materials, Surface treatment, Film formation

# Application of fullerene derivatives for photo catalytic coating

Keyword: High durable photo catalytic coating, Collaborative research with industrial developer, Quick management

Organizations Involved

Dr. Yusuke Tajima, Deputy Team Leader, Integrated Materials Research Laboratory, RIKEN

Keijiro Takanishi, Research Associate, TORAY Industries, Inc., Specialty Material Research Laboratories (Team Leader, Integrated Material Research Laboratory, RIKEN)

## 【Abstract】

Our basic research and technology related to the molecular design of fullerene derivatives and dispersing or mixing technique applied to commercial valuable high performance photocatalytic coating textile. This R&D was fulfilled under the support of 'Integrated Collaborative Research Program with Industry' with TORAY Industries Inc. This unique funding system helped and efficiently worked to complete research targets quite quickly. (Start:Oct, 04. Press release:Dec, 05)

## [Summary of the technology transfer]

## Technological Impact

We developed a method to uniformly disperse and mix the fullerene derivatives with acrylic polymers containing photo catalytic material. This confirmed the durability of photo catalytic coating layer, which has been doubled by adding the fullerene derivatives compared to the existing one. This technology will open new application targets for high durable textile and film products with deodorant or antifouling function.

## Market Impact

Unwashable textile usage such as interior decoration of automobile, wall carpet, furniture etc. Combined with anti-flame technology and so on, we can expect quite big market. Market size: 0.5 – 2 billion yen / year at 2010, 5 – 10 billion yen / year at 2020.

## ●Social Impact

Improvement of Quality Of Life, Health Care and saving energy and material.

●Special Features of the Collaboration

Our unique funding system ‘Integrated Collaborative Research Program with Industry’ works parallel for basic research and technical development. Commercial collaborator set concrete targets and lead the research direction. We select appropriate vice leader from our researcher, who can give scientific contribution. This R&D model worked to completer research targets quite quickly.

## Project Background

Strong demand for the development of high durable and high performance photo catalytic coating textile using fullerene derivatives from TORAY Industries Inc.

## Funding History

The research funding is supported by ‘Integrated Collaborative Research Program with Industry’ in RIKEN.

## I ntellectual property protection

Patent Application: Domestic 1,

※ Not publication before examination

## High performance photocatalytic coating

Previous Photocatalytic Coating (Decompose binder polymer also)

New High performance coating) (Fullerene derivatives prevent decomposition of binder polymer)

## Turning point in the Project

We analyzed market requirement and braked down to technical and scientific targets. Each member from RIKEN and TORAY played important role for R&D. This research progressed at each side RIKEN and TORAY simultaneously. We can complete quickly with help from many cooperators outside of this group.