Dimethyl silicone oil, think about you are not unfamiliar.An inert, tasteless, non-toxic, chemical stability, electrical edge and weather resistance, and has a strong alkali resistance, widely used in industrial and agricultural production departments.But what should be paid attention to when dimethyl silicone oil is synthesized?Anhui Xinjia to give you a simple explanation.
In the synthesis of dimethyl silicone oil process, the first reaction for 4 hours, then neutralization for 1 hour, followed by removal for 4 hours, the volatile component is 1.8%, the yield is 79%, and then the process becomes, reaction for 4 hours, neutralization for 1 hour overnight, the second day removal for 4-6 hours, volatilization is 0.65%, the yield is 56%.
1 whether the catalyst is not neutralized completely, continue to balance the reaction at the time of removal, because the DMC is constantly removed, so the balanced reaction, DMC is also generated, and finally lead to the low yield of dimethyl silicone oil.
2. Whether excessive acetic acid, resulting in degradation reaction, also generate DMC.
3. In order to ensure the correct proportion of alkali and acid in synthetic silicone oil, there is a problem of low yield is that the operator takes off low, first of all, the vacuum degree is not controlled well, and the silicone oil is extracted.
Synthesis of dimethyl silicone oil.Need to pay attention to the above points, in the dimethyl storage, we should also pay attention to keep it away from acid and base items, as well as open flame.
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