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. 03, 2002
Filed:
May. 03, 2001
Mitsuhiro Kouno, Arai, JP;
Noboru Kamei, Himeji, JP;
Daicel Chemical Industries, Ltd., Osaka, JP;
Abstract
An aqueous potassium sorbate solution has a dissolved oxygen concentration of not more than 3.0 mg/l. The aqueous potassium sorbate solution can be obtained (i) by degassing an aqueous potassium sorbate solution to thereby control the dissolved oxygen concentration to 3.0 mg/l or less, or (ii) by performing a reaction in a system, in which the oxygen concentrations of the gas phase and of materials to be reacted are reduced, in the production of an aqueous potassium sorbate solution by a reaction of sorbic acid and potassium hydroxide in the presence of water. The resulting aqueous potassium sorbate solution exhibits successively stable hue.