Continuous oxidation method
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United States of America Patent
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Jul 18, 1989
Grant Date -
N/A
app pub date -
Oct 13, 1987
filing date -
Oct 13, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for oxidizing a substrate which is oxidizable by singlet oxygen is discolded. The first step of the method comprises establishing a flow to and from each of a plurality of successive closed zones, each of which zones (a) contains a quantity of a polymer-bound photosensitizing catalyst that is a source for singlet oxygen when irradiated by light of a particular wavelength, and (b) is of such size and shape that a major portion of the catalyst therein can be made a source for singlet oxygen by irradiation with light of a suitable wavelength. The flow is established by charging the substrate in the liquid phase into the first zone, removing reaction product from the last zone, and transferring reaction product from the first zone and from each intermediate zone to the next succeeding zone. Oxygen is introduced into each of the zones and each is irradiated with light of a frequency which causes the catalyst to be a source for singlet oxygen.
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