Harima has a long history of developing synthetic resins as organic and polymeric materials
with excellent functions, for such products as inks, paints and adhesives. In recent years,
we have developed non-aqueous dispersions (NAD) and water-based paint resins that
contribute to the reduction of volatile organic chemicals (VOCs), as well as organic-
inorganic hybrid materials for use in the fields of information equipment and
semiconductors. Also, in combination with rosin and fatty acids, core materials of our
business, we have continued to develop products that actively contribute to carbon
emission mitigation.
Non-Aqueous Dispersion Paint Resins
We have developed paint resins that apply non-aqueous dispersions (NAD) technologies,
where polymer particles are evenly dispersed in an organic solvent. Despite efforts to
replace organic solvents in paints with water, many issues remain in product performance
and application, leading to increased demand for paints that use organic solvents that are
less harmful. The use of NAD technologies allows high molecular weight and concentration
without increasing viscosity, flexible resin engineering of multiple components with varying
properties, as well as increased workability owing to their thixotropic qualities.
Thixotropic qualities in NAD paint resins
Scratch Restoration Coating Agents
There is a growing demand for products that protect surfaces such as displays and the
exterior of cars, by minimizing dust deposits as well as scratches and stains from
fingerprints, etc. Conventional coating agents form a hard and durable protective layer on
the surface, but unfortunately this emphasizes scratches. Through extensive research in
surface technology, we were able to combine shape-retaining and malleable components to
create scratch restoration coating agents. These agents can be applied on a wide range of
substrates such as metals and plastics, and development is underway to use them on cars,
to improve surface protection and weather resistance.
Scratch restoration mechanism
Water-based Transfer Release Films
Recent years have seen increased demand for transfer release films used in the
manufacturing process of electronic parts, as an essential component in precision molding
and film deposition. Harima has developed functional transfer release films that apply resin
synthesis technologies cultivated over the years, which align the surface and interface
components to improve adhesion to the film substrate, achieve a smooth surface and
increase mold releasability. In addition to the more versatile solvent-types, we are also
developing water-based types for better safety and eco-friendliness.
Nanoparticle Dispersions
Organic and inorganic materials are incompatible due to their vastly different qualities;
however, we can activate characteristics of both through nano-sized dispersions. Metal
oxides are widely used as nanoparticles to enhance such properties as high refractive index
or weather resistance. For dispersants, we have applied our resin engineering technologies
to add functions of dispersibility, binder resin curability and compatibility with other
components. Harima’s nanoparticle dispersions boast a high refractive index and
transparency, making them ideal candidates for optic films used on displays, etc.
