Method for manufacturing vinyl chloride-acryl copolymer latex
AssigneeHanwha Solutions Corporation
InventorsEun Soo Jeong, Geun Chang Ryu, Chulwoong Lee
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Abstract
Provided is a method of preparing a vinyl chloride-acrylic copolymer latex. Specifically, in one embodiment of the present invention, provided is a method of preparing a latex including vinyl chloride-acrylic copolymer particles with a high degree of polymerization and high molecular weight by performing an emulsion polymerization of a vinyl chloride monomer and an acrylic monomer in the presence of an aqueous dispersion medium and an emulsifier while optimizing a feeding mode of the monomers and the emulsifier.
Claims14
A method of preparing a vinyl chloride-acrylic copolymer latex, the method comprising the steps of:
- preparing a polymerization reaction by feeding an aqueous dispersion medium, an emulsifier, and a vinyl chloride monomer to a reactor;
- initiating the polymerization reaction by continuously feeding an initiator to the prepared reactor;
- and
- continuously feeding an acrylic monomer to the reactor, in which the polymerization reaction is initiated,
- wherein in the step of continuously feeding the acrylic monomer to the reactor, in which the polymerization reaction is initiated, an additional feeding of vinyl chloride monomer and an additional feeding of emulsifier are also continuously performed, respectively, and
- wherein when the feeding of the acrylic monomer is performed, the feeding amount thereof per hour is decreased.
Dependencies are inferred from the claim text.