Abstract
Dimethyldistearylammonium Bromide (DODMAB) is a bentonite modifier with good performance. In this experiment, 1-Bromooctadecane is the raw material, and completes tertiary amination and quaternization successively by changing the condition of experiment. The result is that the productivity can achieve 78.94% in the synthesis of DODMAB. It has been used in the experiment of bentonite modification and achieves good results; compared with using trimethylstearylammonium bromide as the organic modifier, the synthetic organic bentonite has better performance than the common organic modifier when used in the oil base drilling fluid of oilfield operation.
Highlights
There are many kinds of bentonite modification agent, and various types of hyamine are the most common used
DODMAB is a surfactant of quaternary ammonium with double long carbon chains, it can be used for bentonite modification and as fabric softener and fungicide [1]
The critical volume VC shows the gel performance of the hyamine organic bentonite in the organic medium, it increases with the carbon chain of carbon chain lengthening; the swelling volume VE shows that the swelling performance of organic bentonite in the organic medium and the performance increases with the growth of the carbon chain of organic modifier
Summary
There are many kinds of bentonite modification agent, and various types of hyamine are the most common used. DODMAB is a surfactant of quaternary ammonium with double long carbon chains, it can be used for bentonite modification and as fabric softener and fungicide [1]. The DODMAB has perfect performance as the organic modifier and the product has the better performance when used in the oilfield operation. This experiment will synthesize DODMAB with method of fractional step and use the products as. (2014) Synthesis and Performance Evaluation of Organic Bentonite Modifier Dimethyldistearylammonium Bromide (DODMAB).
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