Acrylic Emulsion Pressure-Sensitive Adhesive Composition
AssigneeLG Chem, Ltd.
InventorsSeungmo Lee, Seung Hun Yang, Yong Su Park, Yoontae Hwang, Hyo Min Kim, Sungjong Seo
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Abstract
An acrylic emulsion pressure-sensitive adhesive composition is provided. The pressure-sensitive composition includes a copolymer which is prepared by emulsion polymerization of a monomer mixture in the presence of a polymeric emulsifier. The pressure-sensitive adhesive composition exhibits an excellent adhesive force to both hydrophobic and hydrophilic base materials while leaving less residue is provided.
Claims9
An acrylic emulsion pressure-sensitive adhesive composition comprising a copolymer which is prepared by emulsion polymerization of a monomer mixture comprising a (meth)acrylic acid ester-based monomer, a vinyl-based monomer, and an unsaturated carboxylic acid-based monomer in the presence of a polymeric emulsifier, wherein the polymeric emulsifier is represented by the following Chemical Formula 1 and has a degree of hydration of 75% to 99%, represented by the following Equation 1, and a number average molecular weight of 1,000 g/mol to 8,000 g/mol:
- and
- Degree of hydration=m/(m+n)*100, and [Equation 1]
- wherein, in Chemical Formula 1 and Equation 1, m and n represent a number of moles of repeating units constituting a polymer.
A method of preparing an acrylic emulsion pressure-sensitive adhesive composition, comprising:
- preparing a pre-emulsion including a monomer mixture comprising a (meth)acrylic acid ester-based monomer, a vinyl-based monomer, and an unsaturated carboxylic acid-based monomer, and a polymeric emulsifier which is represented by Chemical Formula 1 and has a degree of hydration of 75% to 99%, represented by Equation 1, and a number average molecular weight of 1000 g/mol to 8000 g/mol;
- and
- performing emulsion polymerization by mixing the pre-emulsion with an initiator:
- and
- Degree of hydration=m/(m+n)*100, and [Equation 1]
- wherein, in Chemical Formula 1 and Equation 1, m and n represent a number of moles of repeating units constituting a polymer.
Dependencies are inferred from the claim text.