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Shean-Jeng Jong Patents |
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Inventor: Jong; Shean-Jeng
Address: Tao-Yuan, TW
No. of patents: 12
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 7241891 |
Method for the purification of Piribedil |
July 10, 2007 |
| A method for purifying Piribedil includes mixing Piribedil solid having a purity of 98% by weight with water, boiling the mixture, adding slowly 95% ethanol to the boiling mixture to form a clear liquid, filtering the hot clear liquid, cooling the filtrate to obtain a white crystal havin |
| 7115788 |
Method for the preparation of .alpha.,.alpha.,.alpha.',.alpha.'-tetrafluoro-p-xylene |
October 3, 2006 |
| A method for the preparation of .alpha.,.alpha.,.alpha.',.alpha.'-tetrafluoro-p-xylene is disclosed. .alpha.,.alpha.,.alpha.',.alpha.'-tetrachloro-p-xylene and KF and a small amount of phase transfer catalyst are dissolved in solvent, xylene, and undergo a recycle reaction for 48 hou |
| 7060862 |
Method for the preparation of .alpha.,.alpha.,.alpha.',.alpha.'-tetrachloro-p-xylene with high p |
June 13, 2006 |
| A method of synthesizing a high purity product of .alpha.,.alpha.,.alpha.',.alpha.'-tetrachloro-p-xylene is disclosed. The method includes carrying out a first stage reaction of terephthaldicarboxaldehyde with a mixture of SOCl.sub.2 and dimethylformamide (DMF) to obtain a product mi |
| 6992231 |
Method for the preparation of .alpha.,.alpha., .alpha.',.alpha.'-tetrachlo- ro-p-xylene |
January 31, 2006 |
| A synthesis method of .alpha.,.alpha.,.alpha.',.alpha.'-tetrachloro-p-xyle- ne is disclosed. The method includes reacting terephthaldicarboxaldehyde with a mixture of SOCl.sub.2 and dimethylformamide (DMF) to obtain a product mixture containing .alpha.,.alpha.,.alpha.',.alpha.'-tetrachlor |
| 6958412 |
Method for the preparation of pentafluorophenylacrylate polymer |
October 25, 2005 |
| A method for synthesizing a pentafluorophenyl acrylate polymer includes bulk polymerizing a pentafluorophenyl acrylate monomer in the presence of a free radical initiator. The reactant mixture was subjected to an ultrasonication treatment, so that the mixing of the initiator and the |
| 6800776 |
Method for the preparation of ferrocenyl substituted styrene |
October 5, 2004 |
| Ferrocenecarbonyl and toluene bromide are reacted in an ether solvent and in the presence of magnesium metal as a catalyst. The liquid portion of the reaction mixture is introduced into a silica gel column, wherein the weak acidity of the silica gel is able to dehydrate the reaction |
| 6740786 |
Method for the preparation of 2, 2, 3, 4, 4, 4-hexafluoro-1-butanol |
May 25, 2004 |
| The method for preparing 2,2,3,4,4,4-hexafluoro-1-butanol includes reacting methanol and hexafluoropropene in the presence of a free radical initiator such as di-isopropyl peroxydicarbonate at 25-50.degree. C. and a pressure of 100-300 psi in an autoclave. An inert gas such as nitrogen a |
| 6737502 |
Method of synthesizing polyimides |
May 18, 2004 |
| A solvent-free, catalyst-free and contamination-free method of synthesis of polyimides is disclosed. The method includes polymerizing a diamine with 2,2-bis(3,4-dicarboxyphenyl)hexafluoropropane dianhydride (6FDA) at a pressure of 0.1-760 mm Hg, preferably a reduced pressure at about 36 |
| 6710197 |
Method for the preparation of copper (meth) acryloyloxyethyl phosphate coordination complex |
March 23, 2004 |
| A compound capable of efficiently cutting off light in the near infrared region, copper (meth)acryloyloxyethyl phosphate coordination complex, is synthesized including reacting (meth)acryloyloxyethyl phosphate and copper acetate monohydrate in water. |
| 6664409 |
Method for the preparation of ferroceny1-1,3-butadiene |
December 16, 2003 |
| Ferrocenaldehyde or ferrocenyl methyl ketone and allyl bromide are reacted in an ether solvent and in the presence of magnesium metal as a catalyst. The liquid portion of the reaction mixture is introduced into a silica gel column, wherein the weak acidity of the silica gel is able to de |
| 6627716 |
Process for preparing chlorotrifluoroethylene homopolymers having a low molecular weight |
September 30, 2003 |
| A chlorotrifluoroethylene homopolymer is prepared by polymering chlorotrifluoroethylene monomers in an ester solvent and in the presence of t-butyl peroxypivalate as a radical initiator. The polymerization application can be carried at about 60.degree. C., and the resulting chlorotri |
| 6211392 |
Method of manufacturing ferrocenyl-1,3-butadiene |
April 3, 2001 |
| The present invention relates to a method of manufacturing ferrocenyl-1,3-butadiene, in which a ferrocenecarbonyl is reacted with an allyl halide in a polar aprotic solvent lacking a carbonyl group and containing a samarium diiodide in a temperature range. |
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