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In the production manner of the copolymer of null styrene and the acrylic Acid such as production manner of the styrene acrylic Acid
In the production manner of the copolymer of null styrene and the acrylic Acid such as production manner of the styrene acrylic Acid
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机译:空苯乙烯与丙烯酸的共聚物的生产方式如苯乙烯丙烯酸的生产方式
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摘要
PROBLEM TO BE SOLVED: To obtain an aqueous solution of a salt having high transparency by neutralizing the copolymer formed in the emulsion polymerization of the styrene-acrylic acid system of a high styrene ratio. ;SOLUTION: During the emulsion polymerization, the monomers of styrene and acrylic acid are continuously fed into the polymerization system, as the amount of unreacted styrene is suppressed to ≤0.6 wt.% in the system to produce a styrene-acrylic acid copolymer comprising 40-90 wt.% of styrene and 60-10 wt.% of acrylic acid. The unreacted styrene monomer in the polymerization system is controlled to ≤ a specific amount and the styrene that is suppressed its feed rate is accelerated its dissolution rate and promptly copolymerizes with the water-soluble acrylic acid to give the polymer that substantially has no styrene to styrene linked area whereby an alkali salt aqueous solution of high transparency can be smoothly produced.;COPYRIGHT: (C)2001,JPO
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