RESIN BLEND (As Amended)

Patent metadata

Field	Value
Publication number	US-2016376388-A1
Application number	US-201414903263-A
Country	US
Kind code	A1
Filing date	Jul 8, 2014
Priority date	Jul 8, 2013
Publication date	Dec 29, 2016
Grant date	—

Abstract

Disclosed 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 can be useful in providing a protective film for polarizing plates having excellent adhesive strength to a polarizer. Also, the resin blend can be useful in exhibiting excellent adhesive strength to the polarizer without performing an additional primer coating process on a surface(s) of the protective film for polarizing plate, thereby reducing production time and cost and improving productivity.

First claim

1 . A resin blend comprising:
a first resin; and a second resin that is an acrylic polymer having a difference in surface energy, melt viscosity or solubility parameter from the first resin, wherein the second resin is a polymer of a monomer blend comprising: 47 to 73 parts by weight of an alkyl (meth)acrylate containing an alkyl group having 1 to 14 carbon atoms; 20 to 30 parts by weight of a monomer represented by the following Formula 1; and 3 to 27 parts by weight of a monomer represented by the following Formula 2:

wherein R 1 and R 4 each independently represent hydrogen, or an alkyl group having 1 to 4 carbon atoms,
Ar represents a phenyl group,
R 2 represents hydrogen, or —X—R 6 , where —X— represents —O—, or —OC(O)—, and R 6 represents an alkyl group having 1 to 4 carbon atoms,
R 3 represents hydrogen, or is joined together with R 5 to form a heterocyclic ring, and
R 5 represents a heterocyclic ring, —COOR 7 , or —CONR 8 R 9 , where R 7 represents hydrogen, an alkyl group having 1 to 4 carbon atoms substituted with a hydroxyl group, or a heterocyclic ring, and R 8 and R 9 each independently represent hydrogen, an alkyl group having 1 to 4 carbon atoms substituted with a hydroxyl group, or a phenyl group.

2 . The resin blend of claim 1 , wherein the second resin has a difference in surface energy of 0.1 to 35 mN/m at 25° C. from the first resin.

3 . The resin blend of claim 1 , 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.

4 . The resin blend of claim 1 , wherein the second resin has a difference in solubility parameter at 25° C. of 0.001 to 10.0 (J/cm 3 ) 1/2 from the first resin.

5 . The resin blend of claim 1 , wherein the first resin comprised at least one selected from group consisting of a styrene-based resin, a polyolefin-based resin, a thermoplastic elastomer, a polyoxyalkylene-based resin, a polyester-based resin, a polyvinyl chloride-based resin, a polycarbonate-based resin, a polyphenylene sulfide-based resin, a vinyl alcohol-based resin, a polyamide-based resin, an acrylate-based resin, an engineering plastic, and a copolymer or a blend thereof.

6 . The resin blend of claim 1 , wherein the first resin is a polymer of a monomer blend comprising:
an alkyl (meth)acrylate containing an alkyl group having 1 to 14 carbon atoms; a monomer represented by the following Formula 1; and a monomer represented by the following Formula 3:

wherein R 1 represents hydrogen, or an alkyl group having 1 to 4 carbon atoms,
Ar represents a phenyl group,
R 2 represents hydrogen, or —X—R 6 , where —X— represents —O—, or —OC(O)—, and R 6 represents an alkyl group having 1 to 4 carbon atoms, and
Y represents oxygen, or NR 10 , where R 10 represents hydrogen, an alkyl group having 1 to 12 carbon atoms, or a cycloalkyl group having 3 to 8 carbon atoms.

7 . The resin blend of claim 6 , wherein the monomer blend comprises:
85 to 98 parts by weight of the alkyl (meth)acrylate containing an alkyl group having 1 to 14 carbon atoms; 1 to 5 parts by weight of the monomer represented by Formula 1; and 3 to 10 parts by weight of the monomer represented by Formula 3.

8 . The resin blend of claim 6 , wherein the monomer of Formula 1 is styrene, or α-methyl styrene, and the monomer of Formula 3 is a cyclohexyl maleimide, or a maleic anhydride.

9 . The resin blend of claim 1 , wherein R 1 and R 4 each independently represent hydrogen, or a methyl group,
Ar represents a phenyl group, R 2 represents hydrogen, or —X—R 6 , where —X— represents —O—, or —OC(O)—, and R 6 represents a methyl group, or an ethyl group, R 3 represents hydrogen, or is joined together with R 5 to form a maleic anhydride, or a maleimide unsubstituted or substituted with an alkyl group having 1 to 12 carbon atoms, or a cycloalkyl group having 3 to 8 carbon atoms, R 5 represents a pyrrolidone, phthalimide, or succinimidyl group, —COOR 7 , or —CONR 8 R 9 , where R 7 represents hydrogen, a methyl group substituted with a hydroxyl group, a lactone group, or a succinimidyl group, and R 8 and R 9 each independently represent hydrogen, a methyl group substituted with a hydroxyl group, or a phenyl group.

10 . The resin blend of claim 1 , wherein the monomer of Formula 2 comprises at least one selected from the group consisting of maleic anhydride, γ-butyrolactone (meth)acrylate, N-vinyl pyrrolidone, N-vinyl phthalimide, N-succinimidyl acrylate, norbonene lactone (meth)acrylate, (meth)acrylic acid, hydroxyethyl (meth)acrylate, acrylamide, N-methylol acrylamide, and N-phenyl acrylamide.

11 . The resin blend of claim 1 , wherein the second resin has a molecular weight distribution of 1 to 2.5.

12 . The resin blend of claim 1 , wherein the second resin has a weight-average molecular weight of 5,000 to 200,000.

13 . The resin blend of claim 1 , wherein the second resin is included at a content of 0.1 to 50 parts by weight, based on 100 parts by weight of the first resin.

14 . A copolymer of a monomer blend comprising:
47 to 73 parts by weight of an alkyl (meth)acrylate containing an alkyl group having 1 to 14 carbon atoms; 20 to 30 parts by weight of a monomer represented by the following Formula 1; and 3 to 27 parts by weight of a monomer represented by the following Formula 2:

wherein R 1 and R 4 each independently represent hydrogen, or an alkyl group having 1 to 4 carbon atoms,
Ar represents a phenyl group,
R 2 represents hydrogen, or —X—R 6 , where —X— represents —O—, or —OC(O)—, and R 6 represents an alkyl group having 1 to 4 carbon atoms,
R 3 represents hydrogen, or is joined together with R 5 to form a heterocyclic ring, and
R 5 represents a heterocyclic ring, —COOR 7 , or —CONR 8 R 9 , where R 7 represents hydrogen, an alkyl group having 1 to 4 carbon atoms substituted with a hydroxyl group, or a heterocyclic ring, and R 8 and R 9 each independently represent hydrogen, an alkyl group having 1 to 4 carbon atoms substituted with a hydroxyl group, or a phenyl group.

15 . A pellet comprising:
a core formed of a first resin; and a shell formed of a second resin having a difference in surface energy, melt viscosity or solubility parameter from the first resin, wherein the second resin is a polymer of a monomer blend comprising: 47 to 73 parts by weight of an alkyl (meth)acrylate containing an alkyl group having 1 to 14 carbon atoms; 20 to 30 parts by weight of a monomer represented by the following Formula 1; and 3 to 27 parts by weight of a monomer represented by the following Formula 2:

wherein R 1 and R 4 each independently represent hydrogen, or an alkyl group having 1 to 4 carbon atoms,
Ar represents a phenyl group,
R 2 represents hydrogen, or —X—R 6 , where —X— represents —O—, or —OC(O)—, and R 6 represents an alkyl group having 1 to 4 carbon atoms,
R 3 represents hydrogen, or is joined together with R 5 to form a heterocyclic ring, and
R 5 represents a heterocyclic ri

Assignees

• Lg Chemical Ltd

Inventors

• Choi Eun Joo
• Ryu Jin Young
• Lee Jong Won
• Kim Kyoung Hoon
• Choi Hyeon

Classifications

• B32B27/32

  comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)} · CPC title

• B32B7/10

  at least one layer having inter-reactive properties · CPC title

• B32B27/302

  comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers · CPC title

• B32B2255/10

  on synthetic resin layer or on natural or synthetic rubber layer · CPC title

• B32B2270/00

  Resin or rubber layer containing a blend of at least two different polymers · CPC title