Patent ID: 9493683
Filing Date: 2016-11-15
CPC Classification: C08F,C09J

Claim Text:
1. A method of producing a chloroprene-based polymer, comprising: adding a surfactant to an aqueous medium at a concentration of from 0.00001 wt. parts or more based on 100 wt. parts of the aqueous medium to an amount that is less than a critical micelle concentration (CMC) of the surfactant, to produce a first mixture; nitrogen bubbling the first mixture to produce a second mixture; adding chloroprene or a mixture of chloroprene and a monomer copolymerizable with chloroprene of 2,3-dichloro-1,3-butadiene to the second mixture; and polymerizing the chloroprene or the mixture of chloroprene and a monomer copolymerizable with chloroprene of 2, 3-dichloro-1,3-butadiene, without introducing a hydrophilic group in the polymer, in the presence of the surfactant in the aqueous medium.