6425-39-4Relevant articles and documents
Production method of DMDEE
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Paragraph 0060-0074; 0108-0110, (2019/08/01)
The invention discloses a production method of DMDEE. The production method comprises the following steps: dropwise adding TEOA to sulfuric acid to form a synthesis reaction system, heating to the temperature of 160 to 250 DEG C after dropwise adding and carrying out heat preservation for 3 to 24 h, and discharging water in the synthesis reaction process out of the synthesis reaction system to realize dehydration; adding water, a solvent and an alkali substance to carry out a neutralization reaction after cooling an obtained reaction solution and ending the neutralization reaction until the pHvalue is 8 to 14; filtering a product obtained by the neutralization reaction, and carrying out distillation separation on filtrate obtained by filtering to obtain DMDEE. DMDEE prepared by the methodhas the technical advantages of simple process, low cost and less pollution.
Amine bisulfites
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, (2008/06/13)
This invention relates to the amine bisulfites which are useful as a combination corrosion inhibitor/oxygen scavenger. This is illustrated by heterocyclic amine bisulfites such as pyridine bisulfites.