Patent ID: 6037497
Filing Date: 2000-03-14
Classification: C07C

Abstract:
A process of producing a tertiary amine oxide, which process comprises:a) oxidizing tertiary amine with hydrogen peroxide in water in the presence of carbon dioxide and at a temperature in the range of about 50 to about 60.degree. C. until the reaction mass contains (i) unreacted free amine in the range of about 0.5 to about 6.5% of the reaction mass, (ii) carbon dioxide, and (iii) unreacted hydrogen peroxide;b) dispensing individual portions of the reaction mass into a plurality of shipping containers, or alternatively, transferring at least a portion of the reaction mass to a cooling vessel, allowing or causing the reaction mass in said vessel to cool therein, and then dispensing individual portions of the cooled reaction mass into a plurality of shipping containers; andc) thereafter allowing the reaction to slowly continue to completion at ambient temperature in a plurality of such shipping containers with venting of off-gases, as required;such that the product contains less than 100 ppb of total nitrosoamines as NNO and less than 15 ppb as volatile nitrosodimethylamines.