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:
Mar. 03, 1998
Filed:
Sep. 23, 1996
Applicant:
Inventor:
Robert B Weisenfeld, Chesterfield, MO (US);
Assignee:
Monsanto Company, St. Louis, MO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F / ;
U.S. Cl.
CPC ...
210758 ; 210749 ; 210908 ; 562 17 ;
Abstract
A process is provided for selectively converting formaldehyde in an acidic organic waste aqueous stream in the most part to formose sugars rather than to alkali metal formate and methanol by reacting the stream with a strong alkali base to provide a pH of at least about 8.5 and heating the resulting basic solution to a temperature of at least about 80.degree. C. The formaldehyde is present in the waste stream in amounts between about 1000 ppm to 10,000 ppm.