Acrylic copolymer coagulant and method of preparing graft copolymer using the same
AssigneeLG Chem, Ltd.
InventorsHee Jung Jeon, Geon Soo Kim, Moon Ja Hwang, Hyung Joon Kim, Chang Hoe Kim, Min Su Chae
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Abstract
The present invention provides an acrylic copolymer coagulant which is a copolymer of a monomer mixture comprising a carboxylic acid-based monomer and an acrylic monomer, and a method of preparing a graft copolymer using the same. According to the present invention, a graft copolymer excellent in impact strength, surface gloss characteristics, and processability can be prepared.
Claims6
An acrylic copolymer coagulant which is a copolymer of a monomer mixture comprising a carboxylic acid-based monomer and an acrylic monomer represented by Chemical Formula 1 below,
- wherein a content X of a carboxylic acid-based monomer unit in the acrylic copolymer coagulant satisfies Expression 1 below, and
- an average particle diameter Y of the acrylic copolymer coagulant satisfies Expression 2 below,
- wherein the acrylic copolymer coagulant has a weight-average molecular weight of 700,000 g/mol to 950,000 g/mol:
- in Chemical Formula 1,
- n is 0,
- 2+(n+1)2−0.5(n+1)≤X≤2+(n+1)2+0.5(n+1) <Expression 1>
- {20.817×(n+1)2−27.35×(n+1)+28.433}/X×10−1.5≤Y≤{20.817×(n+1)2−27.35×(n+1)+28.433}/X×10+1.5 <Expression 2>
- in Expressions 1 and 2,
- n is an n value of Chemical Formula 1,
- X is a content of a carboxylic acid-based monomer unit comprised in the acrylic copolymer coagulant (units:
- wt %), and
- Y is an average particle diameter of the acrylic copolymer coagulant (units:
- nm).
An acrylic copolymer coagulant which is a copolymer of a monomer mixture comprising a carboxylic acid-based monomer and an acrylic monomer represented by Chemical Formula 1 below,
- wherein a content X of a carboxylic acid-based monomer unit in the acrylic copolymer coagulant satisfies Expression 1 below, and
- an average particle diameter Y of the acrylic copolymer coagulant satisfies Expression 2 below,
- wherein the acrylic copolymer coagulant has a weight-average molecular weight of 250,000 g/mol to 350,000 g/mol:
- in Chemical Formula 1,
- n is 1,
- 2+(n+1)2−0.5(n+1)≤X≤2+(n+1)2+0.5(n+1) <Expression 1>
- {20.817×(n+1)2−27.35×(n+1)+28.433}/X×10−1.5≤Y≤{20.817×(n+1)2−27.35×(n+1)+28.433}/X×10+1.5 <Expression 2>
- in Expressions 1 and 2,
- n is an n value of Chemical Formula 1,
- X is a content of a carboxylic acid-based monomer unit comprised in the acrylic copolymer coagulant (units:
- wt %), and
- Y is an average particle diameter of the acrylic copolymer coagulant (units:
- nm).
Dependencies are inferred from the claim text.