PURPOSE: To minimize the discoloration of the subject material such as a softening agent for fiber or the like, by oxidizing a tert-amine with hydrogen peroxide in an atmosphere composed of carbon dioxide and an amount of inert gas which is equal in volume to the amount of carbon dioxide, under specific conditions in a liquid medium.
CONSTITUTION: For example, a tert-amine represented by the formula; RR'R"N (R is methyl, ethyl; R' is a 6-20C alkyl; R" is methyl, ethyl, a 6-20C alkyl), is oxidized with hydrogen peroxide at about 20-100°C in an atmosphere composed of carbon dioxide, and an amount of inert gas which is at least equal in volume to the amount of carbon dioxide, preferably in the presence of nitrogen corresponding to 60-75% of the total amount of carbon dioxide and nitrogen in a liquid medium of less than 50% by weight of the reaction mixture, whereby the desired compound hardly discoloured, can be prepared. The water which originates from the aqueous hydrogen peroxide is used as the liquid medium, if required organic solvents such as ethyl acetate can be added thereto.
FURETSUDO JIYON INPASUTATO
KIMU RENAE SUMISU
Next Patent: MULTISTAGED BENDING DRAG STRIP