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Asahi Kasei Finechem develops non-sodium sulfonate monomer
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Asahi Kasei Chemicals’ wholly owned subsidiary Asahi Kasei
Finechem (H.O.: Nishiyodogawa, Osaka, President: Mr. Naoki Moriyama)
has established the world’s first technology for mass produciong
highly pure vinyl sulfuric acid, the smallest vinyl monomer within
the sulfonate group.It will be sold under the name of “VSA-H” from
June 11.
“VSA-H,” as a highly pure non-sodium sulfonate monomer,
is expected to be utilized in electronic material areas which had
been difficult with conventional sodium sulfonate monomers, and the
company is aiming at sales of 300 million yen in fiscal 2011. According
to Asahi Kasei Finechem, the sulfonate group has stronger ionicity
than the carboxylic acid group which has similar functions and its
high efficacy in ion exchange performance, dispersibility, water
solubility, hydrophilic properties and conductive properties has
been confirmed.“VSA-H” for which mass production technology
was developed this time has the following characteristics in comparison
with existing sulfonate monomers.
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VSA-H |
Existing sulfonate monomers |
Structure |
The smallest sulfonate monomer
composed of only a vinyl group and a sulfonate group. |
There are more types that have
functional groups other than the sulfonate group. |
Metal-ion entrainment |
Sodium ions are not
entrained by polymers being non-sodium types (free-type, H-type). |
They are often sodium type, and
sodium ions are entrained quantitatively. |
Performance |
It is expected that it will be
possible to control the debradation of the product because
its simple structur makes it hard for side reactions to occur.Purification
of polymer products is easy because they are highly pure. |
They require complex purification
and there would be concern for product degradation because of
other functional groups and impure substances.
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Solubility |
Having good solubility it can be
used with various organic solvents. |
They are easily dissolved in water,
but not in organic solvents. |
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