2224-15-9Relevant articles and documents
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Cohen,Haas
, p. 1733 (1953)
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Quaternary ammonium salt polymer and preparation method and application thereof
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Paragraph 0061-0062, (2020/05/29)
The invention provides a quaternary ammonium salt polymer and a preparation method and application thereof. The structure of the quaternary ammonium salt polymer contains a hydrophilic group and adjustable hydrophilic/hydrophobic groups such as PPG and PAG. With high surface tension, the quaternary ammonium salt polymer can effectively separate miscellaneous oil wrapping metal cuttings and enablesthe miscellaneous oil to float above a metal processing aqueous solution, so demulsification can be effectively realized, the surface tension of the solution is increased, and the oil floats to a liquid level; and compared with an existing sedimentation additive for a metal working fluid, the quaternary ammonium salt polymer can effectively settle particles in the metal working fluid, and has good application prospects.
Synthesis method of ethylene glycol diglycidyl ether
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Paragraph 0014; 0015; 0016; 0017; 0018; 0019, (2017/07/21)
The invention relates to a synthesis method of ethylene glycol diglycidyl ether. According to the method, ethylene glycol and epoxy chloropropane are used as raw materials; argon gas is continuously introduced; ring-opening reaction is performed under the combined action of ultrasonic waves and a ternary composite catalyst. A 5A molecular sieve and the ternary composite catalyst are combined, so that the catalyst dosage is greatly reduced; the reaction progress is accelerated; the method is suitable for industrial large-scale production. After the reaction is completed, the temperature is lowered; the mixture and liquid alkaline take ring-closure reaction under the effects of solvent methylbenzene and a 3A molecular sieve supported phase transfer catalyst; the 3A molecular sieve supported phase transfer catalyst has high reaction activity; after the reaction is completed, water washing is very smooth; after methylbenzene and water are removed from a crude product, the ethylene glycol diglycidyl ether with high epoxide value is obtained, wherein the epoxide value can reach 0.78. Compared with the prior art, the synthesis method has the advantages that the selectivity is high; side reactions are few; the reaction effect is good; the yield is high; the product quality is the best; the cost performance is high.