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Preparation method and application of double quaternary ammonium salt
Time of Update: 2022-01-04
Double quaternary ammonium salt>[Structural formula]>>[Preparation method] At present, there are mainly the following two
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Physicochemical properties and preparation method of imidazoline quaternary ammonium salt corrosion inhibitor
Time of Update: 2021-12-06
④ Zhang Guanghua prepared 2-aminoethyl heptadecenyl by reacting oleic acid (industrial product, the fraction obtained under reduced pressure 180～230℃/mmHg), diethylenetriamine and benzyl chloride in xylene solution Imidazoline quaternary ammonium salt .
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Preparation method and application of chitosan quaternary ammonium salt
Time of Update: 2021-11-04
Chitosan Quaternary Ammonium Salt>[Preparation method] In addition to directly dissolving in water, the chitosan quaternary ammonium salt can also be mixed with some organic solvents in any ratio, such as mixing 10% chitosan
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Preparation method of modified urea-formaldehyde resin quaternary ammonium salt
Time of Update: 2021-10-21
The molar ratio of formaldehyde, urea, and epichlorohydrin is 2:1 : 0.
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Preparation and properties of halogen acid, halogen acid and their salts
Time of Update: 2021-06-18
8HC1O 3 =4HCIO 4 +2Cl 2 +3O 2 +2H 2 O4HBrO 3 =2Br 2 +5O 2 +2H 2 OThe thermal stability of halogen acid salt is higher than that of the corresponding acid, but it also decomposes when heated .
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The preparation of a commonly used physiological salt solution.
Time of Update: 2020-10-25
Appendix I The preparation of a commonly used physiological salt solution in vitro or estosome organs and tissues experiments should be carried out, the specimen should be as close to the environment in the body
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The epoxy resin flame-retardant composite material with good light transmittance prepared by Qinghai Salt Lake Institute
Time of Update: 2020-10-23
materials decreased significantly, with EP/5MBH composites being the most prominent, with a 30% to 50% decrease in thermal release rate peak (pHRR), smoke release rate peak (pSPR), CO release rate peak (pCOP), CO2 release rate peak (pCO2P), and fire
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The epoxy resin flame-retardant composite material with good light transmittance prepared by Qinghai Salt Lake Institute
Time of Update: 2020-10-23
materials decreased significantly, with EP/5MBH composites being the most prominent, with a 30% to 50% decrease in thermal release rate peak (pHRR), smoke release rate peak (pSPR), CO release rate peak (pCOP), CO2 release rate peak (pCO2P), and fire
