The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 10, 2002
Filed:
Jun. 26, 2001
Andrew Teh Hu, Hsin Chu, TW;
Tsai-Wie Tseng, Tao Yuan Hsein, TW;
Herng-Dar Hwu, Taoyuan Hsein, TW;
Lung-chang Liu, Hsin Chu, TW;
Chung-Chun Lee, Hsin-chu, TW;
Ming-Chia Lee, Hsin-chu, TW;
Jun-Rong Chen, Hsin-Chu, TW;
Other;
Abstract
This invention provides a novel process for preparing soluble phthalocyanines by microwave irradiation in the absence of any organic solvent. Three different starting materials, i.e. t-butylphthalic anhydride, t-butyl phthalonitrile and metal-free H Pc (tetra-t-butylphthalocyanine) have been adopted, respectively. The starting material with proper metal compound, such as chloride or acetate were irradiated in a commercial microwave oven for a period of 1 to 30 minutes at a power of 200˜900 W. This process is noted to reduce drastically reaction time of MPc formation from 8˜24 hours to 10˜30 minutes due to its unique heating by microwave irradiation. Sandwiched type MPc (such as Lu Pc ) can be produced only through metal replacement from metal-free phthalocyanine by microwave irradiation.