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Synthesis of Polymers in Aqueous Solutions: Synthesis of Polysulfide by Reaction of Bis(4-mercaptophenyl) Sulfide with Bis(4-chloro-3-nitrophenyl) Sulfone Using Various Bases in Aqueous Solutions - The polycondensation of bis(4-mercaptophenyl) sulfide (BMPS) with bis(4-chloro-3-nitrophenyl) sulfone (BCNPS) was examined using various organic or inorganic bases in mixed solvents of N-methyl-2-pyrrolidone (NMP) with water or in plain water. The reaction of BMPS with BCNPS proceeded smoothly to give the corresponding polysulfide in the mixed solvents of NMP with water or in plain water using appropriate organic bases such as 1,8-diazabicyclo(5.4.0)- undecene-7, tripropylamine, or quinoline/
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