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US 10,882,989 B2Granted
Resin blend
AssigneeLG Chem, Ltd.
InventorsJong Won Lee, Han Na Lee, Jin Young Ryu, Woo Sung Kim, Eun Joo Choi, Hyeon Choi
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Abstract
Provided are a resin blend, a copolymer, a pellet, a method of manufacturing a resin molded article using the same, and a resin molded article. The exemplary resin blend may provide a protective film for a polarizing plate having an excellent adhesive strength to a polarizer. In addition, when the resin blend is used, additional primer coating on the protective film for a polarizing plate may be omitted, and an excellent adhesive strength to the polarizer may be exhibited, thereby reducing production time and cost and increasing productivity.
Claims4
A resin blend, comprising:
- a first resin;
- and
- a second resin of an acryl polymer having a difference in a surface energy, melt viscosity or solubility parameter from the first resin,
- wherein the first resin is a polymer of a first monomer blend consisting of 85 to 98 parts by weight of an alkyl(meth)acrylate having an alkyl group having 1 to 14 carbon atoms;
- 1 to 5 parts by weight of the monomer of Formula 1;
- and 3 to 10 parts by weight of the monomer of Formula 2, based on 100 parts by weight of the first monomer blend,
- wherein the second resin is a polymer of a second monomer blend consisting of 70 to 95 parts by weight of an alkyl(meth)acrylate having an alkyl group having 1 to 14 carbon atoms;
- and 5 to 30 parts by weight of the monomer of Formula 1, wherein the monomer of Formula 1 is a styrene substituted by at least one substituent, based on 100 parts by weight of the second monomer blend,
- wherein the second resin is hydrophobic compared to the first resin,
- wherein the second resin has a difference in melt viscosity form the first resin of 0.1 to 3000 pa*s at a shear rate of 100 to 1000 s−1 and a processing temperature of the resin blend,
- wherein the second resin is included at 0.1 to 20 parts by weight with respect to 100 parts by weight of the first resin,
- wherein the second resin has a difference in surface energy of 0.1 to 35 mN/m at 25° C. from the first resin,
- wherein the second resin has a difference in melt viscosity of 0.1 to 3,000 Pa·s from the first resin at a shear rate of 100 to 1,000 s−1 and a processing temperature of the resin blend,
- wherein the second resin has a difference in solubility parameter from the solubility parameter from the first resin of 0.001 to 10.0 (J/cm3)1/2 at 25° C., and
- wherein the second resin has a polydispersity index of 1 to 2.5 and a weight average molecular weight of 5,000 to 200,000:
- where R1 is hydrogen or an alkyl group having 1 to 4 carbon atoms,
- Ar is phenyl, and
- R2 is hydrogen or —X—R6 in which —X— is —O— or —OC(O), and R6 is an alkyl group having 1 to 4 carbon atoms,
- wherein in the second resin the styrene substituted by at least one substituent is the monomer of Formula 1 in which R2 is —X—R6,
- where Y is oxygen or NR10, and R10 is hydrogen, an alkyl group having 1 to 12 carbon atoms or a cycloalkyl group having 3 to 8 carbon atoms.
17 more elements
Dependencies are inferred from the claim text.