| Title of Invention | A PROCESS FOR OBTAINING A PURIFIED ANHYDROSUGAR ALCOHOL |
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| Abstract | A process for the formation of a anhyrosugar alcohol is disclosed, whereby the resultant purified anhydrosugar alcohol has a purity of at least 99.8% and is substantially colorless. The anhydrosugar alcohol is purified is purified by distillation, recrystallization from methanol, ethanol or ethylene glycol, melt recrystallization, or a combination thereof, preferably, the purification is by distillation followed by recrystallization from methanol, ethanol or ethylene glycol. At test for determining the purity of the anhydrosugar alcohol is disclosed, wherein the color of the anhydrosugar alcohol after annealing at a temperature of at least 260˚ C for at least four hours is examined. Alternatively, purity can be determined by examination of ultraviolet (UV) transmittance of the purified abhydrosugar alcohol at various wavelengths. The purified anhydrosugar alcohol at various wavelengths. The purified anhyrosugar alcohol may be incorporated into a polyester, which may in turn be used to form such articles of manufacturing as , optical, disk, fibers, sheets, and films. |
| Full Text | N/A |
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in-pct-2001-00610-mum-assignment(19-7-2005).pdf
in-pct-2001-00610-mum-cancelled pages(19-7-2005).pdf
in-pct-2001-00610-mum-claims(29-5-2001).pdf
in-pct-2001-00610-mum-claims(granted)-(1-11-2007).pdf
in-pct-2001-00610-mum-correspondence(14-3-2006).pdf
in-pct-2001-00610-mum-correspondence(ipo)-(21-1-2008).pdf
in-pct-2001-00610-mum-description(complete)-(29-5-2001).pdf
in-pct-2001-00610-mum-description(granted)-(1-11-2007).pdf
in-pct-2001-00610-mum-form 1(14-12-2001).pdf
in-pct-2001-00610-mum-form 1(19-7-2009).pdf
in-pct-2001-00610-mum-form 1(29-5-2001).pdf
IN-PCT-2001-00610-MUM-FORM 16(5-11-2012).pdf
in-pct-2001-00610-mum-form 19(6-5-2004).pdf
in-pct-2001-00610-mum-form 2(complete)-(29-5-2001).pdf
in-pct-2001-00610-mum-form 2(granted)-(1-11-2007).pdf
in-pct-2001-00610-mum-form 2(title page)-(29-5-2001).pdf
in-pct-2001-00610-mum-form 2(title page)-(granted)-(1-11-2007).pdf
in-pct-2001-00610-mum-form 3(19-7-2005).pdf
in-pct-2001-00610-mum-form 3(29-5-2001).pdf
in-pct-2001-00610-mum-petition under rule 137(19-7-2005).pdf
in-pct-2001-00610-mum-petition under rule 138(19-7-2005).pdf
in-pct-2001-00610-mum-power of attorney(19-7-2005).pdf
in-pct-2001-00610-mum-power of authority(30-5-2001).pdf
in-pct-2001-00610-mum-specification(amended)-(19-7-2005).pdf
in-pct-2001-00610-mum-wo international publication report(29-5-2001).pdf
| Patent Number | 211512 | ||||||||||||||||||||||||||||||
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| Indian Patent Application Number | IN/PCT/2001/00610/MUM | ||||||||||||||||||||||||||||||
| PG Journal Number | 04/2008 | ||||||||||||||||||||||||||||||
| Publication Date | 25-Jan-2008 | ||||||||||||||||||||||||||||||
| Grant Date | 01-Nov-2007 | ||||||||||||||||||||||||||||||
| Date of Filing | 29-May-2001 | ||||||||||||||||||||||||||||||
| Name of Patentee | E.I. DU PONT DE NEMOURS AND COMPANY | ||||||||||||||||||||||||||||||
| Applicant Address | 1007 MARKET STREET, WILMINGTON, DELAWARE 19898 | ||||||||||||||||||||||||||||||
Inventors:
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| PCT International Classification Number | C07B 493/04 | ||||||||||||||||||||||||||||||
| PCT International Application Number | PCT/US99/00539 | ||||||||||||||||||||||||||||||
| PCT International Filing date | 1999-01-11 | ||||||||||||||||||||||||||||||
PCT Conventions:
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