Polysiloxane bound photosensitizer for producing singlet oxygen

Details Polysiloxane bound photosensitizer for producing singlet oxygen Polysiloxane bound photosensitizer for producing singlet oxygen

1988-12-20

1990-05-01

Niebling, John F.

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

522904, 20415749, 20415776, 20415821, 2041582, 20415715, 502158, 502159, 502162, 502168, 502167, 427387, 427221, 427216, 4273897, 4273936, 528 9, 528 10, B01J 1908, B01J 3100, B05D 302

Patent

active

049215892

ABSTRACT:
This invention relates to a photosensitizer which is bound to a polysiloxane polymer, a method of preparing the bound photosensitizer and a process for using the bound photosensitizer. The photosensitizers which may be used in the invention include rose bengal, rhodamine B, acridine orange, methylene blue and zinc phthalocyanine. The photosensitizer is attached to the polysiloxane by reacting a hydroxyl or vinyl group on the photosensitizer with a hydrogen on the polyhydrosiloxane, thereby binding the photosensitizer into the polymer network. Finally, the bound photosensitizer may be used to oxidize undesirable oxidizable compounds present in a hydrocarbon or aqueous fraction. One specific example is the sweetening of kerosene which involves oxidizing the mercaptans contained in the kerosene.

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