| 摘要 |
PROBLEM TO BE SOLVED: To provide a new continuous polymerization apparatus in which polymer compositions different in quality can be produced.SOLUTION: In the continuous polymerization apparatus, at least first and second reactors (10, 20) are used. The reactor (10, 20) has a feeding port (11a, 21a) and an extraction port (11b, 21b). The feeding port (11a) of the first reactor (10) is connected to supply sources (1, 3) of a raw material monomer and a polymerization initiator, and the extraction port (11b) thereof is connected to the feeding port (21b) of the second reactor (20) by a connection line (15a). The connection line (15a) is merged with a supplement line (15b) in a mergence part via an injection valve (50). The injection valve (50), in a fully-closed state, has a space through which at least a fluid containing the raw material monomer at the least can be flowed from the replenishment line (15b) to the connection line (15a). |
