7398-69-8Relevant articles and documents
Copolymerization of the poly(N,N-dimethyl-N,N-diallylammonium chloride) macromonomer with acrylamide
Kalyazina,Murzabekova,Lelyukh,Gritskova
, p. 535 - 539 (2007)
Copolymers of the poly(N,N-dimethyl-N,N-diallylammonium chloride) macromonomer (1′) with acrylamide (2) with a high content of cationic groups (up to 50%) were synthesized. The relative activities r 1′ and r 2 were calculated. The relative activities calculated by the Kelen-Tudos (r 1′ = 0.057±0.009, r 2 = 1.57±0.12) and Feynman-Ross (r 1′ = 0.055±0.011, r 2 = 1.58±0.14) methods are in accordance. The intrinsic viscosity and the yield of copolymers were found to decrease with an increase in the molar fraction of macromonomer 1′ in the monomer mixture.
High-yield preparation method of high-purity dimethyl diallyl ammonium chloride monomer
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Paragraph 0069-0071; 0081-0084, (2019/03/31)
The invention belongs to the technical field of organic synthesis, and specifically relates to a high-yield preparation method of a high-purity dimethyl diallyl ammonium chloride monomer. According tothe preparation method provided by the invention, a segmented type chloropropene and sodium hydroxide solution alternative and dropwise adding method is adopted, the most suitable alternative and dropwise adding amount and the most suitable reaction time of the chloropropene and the sodium hydroxide solution can be found through a large amount of small-scale tests and by adopting an acid-base indicator, the chloropropene can be prevented from being located in strong base environment, a large amount of byproducts such as allyl alcohol can be effectively prevented from being generated, the utilization rate of the chloropropene can be effectively increased, and by adopting a pressure-proof closed reaction kettle, dimethylamine is enabled not to leak and can completely take part in reaction.A dimethyl diallyl ammonium chloride monomer solution obtained through the preparation method is light in color and less in impurities, activated carbon is not used for decoloring and removing the impurities, the purity is high, the contents of amine salt and chlorine ions are extremely low, the yield is approximate to ideal value, a product is used for homopolymerization experiments, a colorless,transparent and clear polymer solution is obtained, and the viscosity and the molecular weight of the colorless, transparent and clear polymer solution are far higher than those of like products.
A cationic monomer is dimethyl diallyl ammonium chloride synthetic method
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Paragraph 0031; 0032; 0033, (2016/10/07)
The invention discloses a synthesis method of cationic monomer dimethyl diallyl ammonium chloride, belongs to the technical field of organic chemical industry, and particularly relates to synthesis of dimethyl diallyl ammonium chloride. The synthesis method comprises the following steps: firstly, performing distillation on a 30-40% dimethylamine solution at low-temperature, and absorbing by using a dimethylamine solution with the same concentration and in a low-temperature state to obtain a concentrated dimethylamine solution with the mass concentration of 55-65%; secondly, at 0-10 DEG C, slowly adding 1/8-1/ 6 of chloropropene into the concentrated aqueous dimethylamine solution, and performing early tertiary amination reaction; thirdly, adding the rest chloropropene and a sodium hydroxide solution with the mass concentration of 45-55% dropwise, and performing neutralization reaction and the early tertiary amination reaction; finally, performing quaternization reaction, and purifying to obtain the cationic monomer dimethyl diallyl ammonium chloride. According to the synthesis method, the distillation temperature is relatively low and the negative pressure environment is not required, so that the operation is safer, the reaction speed is high, few intermediate products are generated, and the production capacity of a device can be improved.