| Title of Invention | PROCESS FOR THE MANUFACTURE OF FURFURAL |
|---|---|
| Abstract | In a new process for the manufacture of furfural, a "pentosan-containing raw material acidified or not, is heated to a temperature T₁ by admitting steam through valve 2 while the valves 3 and 4 are closed. During the very short heating process, the steam condenses, thus increasing the moisture content of the charge. Then, valve 2 is closed and a leak valve 3 is opened so as to produce a steady small flow of product vapour by gradual depressurisation. This causes a slow drop in temperature. When in this fashion a suitably chosen temperature T₂ is reached, the leak valve 3 is closed to terminate the first 'gradual depressurisation'. If at the end of this period no more furfural was obtained, the digestion is completed by opening valve 4 to discharge the residue. If, however, furfural was still obtained, the reactor is reheated and submitted to another 'gradual depressurisation' period. |
| Full Text | N/A |
|---|
in-pct-2001-00977-mum-abstract(15-03-2004).doc
in-pct-2001-00977-mum-abstract(15-03-2004).pdf
in-pct-2001-00977-mum-cancelled pages(15-03-2004).pdf
in-pct-2001-00977-mum-claims(granted)-(15-03-2004).doc
in-pct-2001-00977-mum-claims(granted)-(15-03-2004).pdf
in-pct-2001-00977-mum-correspondence(02-07-2004).pdf
IN-PCT-2001-00977-MUM-CORRESPONDENCE(20-2-2009).pdf
IN-PCT-2001-00977-MUM-CORRESPONDENCE(30-12-2008).pdf
in-pct-2001-00977-mum-correspondence(ipo)-(05-05-2004).pdf
in-pct-2001-00977-mum-drawing(15-03-2004).pdf
in-pct-2001-00977-mum-form 13(02-01-2004).pdf
in-pct-2001-00977-mum-form 19(20-05-2003).pdf
in-pct-2001-00977-mum-form 1a(15-03-2004).pdf
in-pct-2001-00977-mum-form 2(granted)-(15-03-2004).doc
in-pct-2001-00977-mum-form 2(granted)-(15-03-2004).pdf
IN-PCT-2001-00977-MUM-FORM 26(18-2-2009).pdf
in-pct-2001-00977-mum-form 3(12-12-2001).pdf
in-pct-2001-00977-mum-form 6(30-12-2008).pdf
in-pct-2001-00977-mum-form-pct-ipea-409(14-08-2001).pdf
in-pct-2001-00977-mum-petition under rule 123(19-12-2001).pdf
in-pct-2001-00977-mum-petition under rule 124(19-12-2001).pdf
in-pct-2001-00977-mum-petition under rule 137(15-03-2004).pdf
in-pct-2001-00977-mum-power of attorney(27-07-2001).pdf
| Patent Number | 230762 | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Indian Patent Application Number | IN/PCT/2001/00977/MUM | ||||||||
| PG Journal Number | 13/2009 | ||||||||
| Publication Date | 27-Mar-2009 | ||||||||
| Grant Date | 27-Feb-2009 | ||||||||
| Date of Filing | 14-Aug-2001 | ||||||||
| Name of Patentee | PROSERPINE CO-OPERATIVE SUGAR MILLING ASSOCIATION LTD. | ||||||||
| Applicant Address | MILL STREET, PROSERPINE, QUEENSLAND 4800, | ||||||||
Inventors:
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| PCT International Classification Number | C07D307/50 | ||||||||
| PCT International Application Number | PCT/ZA00/00024 | ||||||||
| PCT International Filing date | 2000-02-11 | ||||||||
PCT Conventions:
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