Water-bone Recycling Paint System
Sakuichi KONISHI, Kazuo UENOYAMA, Susumu HIBI, Jun-ichi SUEYOSHI and Sumio NISHIOKA
Nippon Paint Co., Ltd.
Paint & coating plays an important role in forming the film on the surface of substances,
in improving the durability by protecting the substances, in designing our comfortable life
In the case of the current spraying coating system, the environmental demerit such as emission of organic solvent, disposing the over-sprayed paint as industrial waste, and so on, was expected very much to improve.
"Recycle Water-Borne system" is composed of collecting the over-sprayed paint into booth water, separating the paint from water, concentrating it and reusing/ recycling it, and is also a system aiming the zero-emission.
The Aqueous-coated Photothermographic Film
Hirohiko TSUZUKI, Kenji NAKAJIMA, Akira HATAKLEYAMA, Toshikhiko MAEKAWA and Ichizo TOYA
Fuji Photo Film Co., Ltd.
As digitization is prevailing in the medical field, doctors strongly desire high quality photographic films for their diagnosis, which are applied for digital image. Mention environment, the photothermographic system has an advantage of no waste solution, and a disadvantage of using enormous amount of organic solvent in the production. We succeeded in the drastic reduction of organic solvent with the aqueous-coated photothermographic film using the aqueous latex.
Development of Environmentally Friendly Heterogeneous Catalysts using Unique Properties of Inorganic Crystallines
High performance heterogeneous catalysts aiming at environmentally benign chemical processes were
developed by utilizing the unique properties of inorganic crystallines, i.e. hydroxyapatite, montmorillonite,
and hydrotalcite. Representative successes in this research are as follows. 1) A highly efficient catalytic
oxidation of alcohols was accomplished using molecular oxygen as a “green” oxidant with Ruthenium and
Palladium phosphate complexes on the surface of the hydroxyapatite, the main component of bone. 2) The
novel chain-like species of Titanium and Scandium created within the expansible interlayer of the
montmorillonite displayed strong acidities capable of catalyzing aromatic alkylation and Michael addition
under solventless conditions. 3) Unusual base sites generated on the hydrotalcite surface could catalyze
highly selective aldol reaction of aldehydes in water. 4) A unique acid-base bifunctional surface of the
Magnesium-Aluminum mixed oxide derived from the hydrotalcite could attain cycloaddition of CO2 to
various epoxides to yield five-membered cyclic carbonates under atmospheric CO2 pressure.
The above methods using the sophisticated heterogeneous catalysts can replace synthetic proc esses of low atom efficiency that use hazardous stoichiometric reagents, and thus minimize wastes in manufacturing pivotal chemicals.