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One of the outstanding developments at Ube Industries in recent years
is polyimide, a super heat-resistant resin.
Polyimide with a wide variety of applications is expanding its application
into the aerospace industry. For example, "Upilex®R", a polyimide film, has been employed as heat insulation material
for satellites. In addition, newly developed polyimide foam and a new type
polyimide have been attracting considerable attention from those involved
in the aerospace industry.
Another major challenge being tackled by UBE is to develop polyimide-based
high-resolution flexible circuit boards. These include double-sided circuit
boards tape for chip-on-film (COF) devices on which 40µ fine-pitch
circuits are patterned. A number of such high-value-added products have
already come into practical use, marking our successful entry into the
circuit board business.
Ube Industries is developing a gas-separation system using hollow
polyimide fibers, with applications in hydrogen concentration for fuel
production, alcohol dehydration, and oxygen enrichment.
The utility of "U-Pore®", a micro-porous membrane made of polyethylene and polypropylene,
has been extended to the separators for lithium-ion secondary batteries.
We have also developed electrolytes for lithium-ion secondary batteries
that have been highly rated by the sector. Focusing on semiconductors,
we are developing metal organics (MOs) whose high purity received favorable
recognition for use of forming metal oxide thin films and semiconductor
wiring.
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