Patent ID: 11912909
Assignee: LG CHEM, LTD.
Field: Basic materials chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. An acrylic emulsion pressure sensitive adhesive composition comprising:
a first acrylic polymer, wherein the first acrylic polymer is negatively charged;
a second acrylic polymer, wherein the second acrylic polymer is positively charged;
a first external cross-linking agent; and
a second external cross-linking agent,
wherein the first external cross-linking agent is bonded to at least one of the first acrylic polymer or the second acrylic polymer,
wherein the first external cross-linking agent is a keto group-containing monomer, and the second external cross-linking agent is a dihydrazide,
wherein the second acrylic polymer comprises repeating units derived from alkyl (meth)acrylate; repeating units derived from comonomers selected from the group consisting of a vinyl-based monomer and a hydroxyl group-containing (meth)acrylate; and repeating units derived from an amino group-containing (meth)acrylate,
wherein the vinyl-based monomer is one or more selected from the group consisting of styrene, methylstyrene, ethylstyrene, butylstyrene, chlorostyrene, vinylnaphthalene, chloromethylstyrene, hydroxymethylstyrene, divinylbenzene and vinyl acetate, and
wherein the second acrylic polymer is positively charged through the repeating units derived from the amino group-containing (meth)acrylate, and the repeating units derived from the amino group-containing (meth)acrylate are included in a content of 5 to 12 mol %, based on total repeating units of the second acrylic polymer.