| CPC C08F 279/04 (2013.01) [B29C 45/0001 (2013.01); C08F 6/003 (2013.01); C08J 3/12 (2013.01)] | 6 Claims |
|
1. A method for producing a diene-based graft copolymer resin, the method comprising:
adding, into a reactor, a polymerization solution comprising a diene-based rubber polymer, an aromatic vinyl-based monomer, a vinyl cyan-based monomer, a polymerization initiator, and a reaction solvent, and polymerizing the polymerization solution to prepare a polymer;
recovering a solution comprising unreacted monomers and a reaction solvent from the polymerization solution, dispersing a releasing agent in a recovered solution, and then adding the solution into the front end of a volatilization tank; and
removing the unreacted monomers and the reaction solvent from the volatilization tank,
wherein the removing of the unreacted monomers and the reaction solvent from the volatilization tank is carried out at a temperature of 200° C. to 300° C. under a pressure of 10 torr to 100 torr,
wherein the diene-based rubber polymer includes a polymer of a diene-based monomer,
wherein the diene-based monomer includes at least one selected from among 1,3-butadiene, isoprene, chloroprene, and piperylene,
wherein the aromatic vinyl-based monomer includes at least one selected from among styrene, α-methyl styrene, α-ethyl styrene, and p-methyl styrene,
wherein the vinyl cyan-based monomer includes at least one selected from among acrylonitrile, methacrylonitrile, phenylacrylonitrile and α-chloroacrylonitrile, and
wherein the releasing agent includes calcium stearate.
|