Block copolymer composition

Patent metadata

Field	Value
Publication number	US-11414541-B2
Application number	US-201916976236-A
Country	US
Kind code	B2
Filing date	Mar 29, 2019
Priority date	Mar 30, 2018
Publication date	Aug 16, 2022
Grant date	Aug 16, 2022

Abstract

A block copolymer composition is disclosed herein. In some embodiments, the block copolymer composition includes a diblock copolymer and a triblock copolymer each including a polyolefin-based block and a polystyrene-based block. The diblock copolymer is present at less than or equal to 19% , based on total weight of the block copolymer composition, the polyolefin-based block includes a repeating unit represented by Formula 1, and the polystyrene-based block includes one or more of Formulas 2 and 3:wherein R1 is hydrogen, C3 to C20 alkyl, or C3 to C20 alkyl substituted with silyl, R2 and R3 are each independently C6 to C20 aryl, or C6 to C20 aryl substituted with halogen, C1 to C12 alkyl, or C3 to C12 cycloalkyl, n is an integer from 1 to 10,000, and l and m are each independently an integer from 10 to 1,000.

First claim

The invention claimed is:

1. A block copolymer composition, comprising:
a diblock copolymer; and
a triblock copolymer,
wherein the diblock and triblock copolymers each include a polyolefin-based block and a polystyrene-based block,
wherein a content of the diblock copolymer is less than or equal to 19% by weight, based on the total weight of the composition,
wherein the block copolymer composition has a polydispersity index (PDI) of greater than 1.1 to 1.9,
wherein the block copolymer composition has a tensile strength of 10 MPa to 30.6 MPa, as measured according to ASTM D638, and
wherein the polyolefin-based block has a repeating unit represented by the following Formula 1, and the polystyrene-based block includes one or more selected from the group consisting of the following Formulas 2 and 3:

wherein R 1 is hydrogen, an alkyl having 3 to 20 carbon atoms, or an alkyl having 3 to 20 carbon atoms, which is substituted with silyl,
R 2 and R 3 are each independently an aryl having 6 to 20 carbon atoms, or an aryl having 6 to 20 carbon atoms, which is substituted with a halogen, an alkyl having 1 to 12 carbon atoms, or a cycloalkyl having 3 to 12 carbon atoms,
n is an integer ranging from 1 to 10,000, and
l and m are each independently an integer ranging from 10 to 1,000.

2. The block copolymer composition of claim 1 , wherein R 2 and R 3 are each independently phenyl, or phenyl unsubstituted or substituted with a halogen, an alkyl having 1 to 8 carbon atoms, ora cycloalkyl having 3 to 12 carbon atoms.

3. The block copolymer composition of claim 1 , wherein R 1 is hydrogen, or an alkyl having 3 to 12 carbon atoms.

4. The block copolymer composition of claim 1 , wherein R 1 is hydrogen, or an alkyl having 4 to 12 carbon atoms, and R 2 and R 3 are phenyl.

5. The block copolymer composition of claim 1 , wherein the polyolefin-based block comprises a repeating unit represented by the following Formula 4:

wherein R 1 ′ and R 1 ″ are each independently hydrogen, an alkyl having 1 to 20 carbon atoms, an alkyl having 1 to 20 carbon atoms, which is substituted with silyl, an arylalkyl having 7 to 20 carbon atoms, or an arylalkyl having 7 to 20 carbon atoms, which is substituted with silyl, provided that R 1 ′ and R 1 ″ are different from each other,
0<p<1, and
n′ is an integer ranging from 10 to 10,000.

6. The block copolymer composition of claim 1 , wherein the diblock copolymer and the triblock copolymer each independently comprise a composite block represented by the following Formula 5, which is formed by binding of the polyolefin-based block and the polystyrene-based block:

wherein R 1 is hydrogen, an alkyl having 3 to 20 carbon atoms, or an alkyl having 3 to 20 carbon atoms, which is substituted with silyl,
R 2 is an aryl having 6 to 20 carbon atoms, or an aryl having 6 to 20 carbon atoms, which is substituted with a halogen, an alkyl having 1 to 12 carbon atoms, or a cycloalkyl having 3 to 12 carbon atoms,
l is an integer ranging from 10 to 1,000, and
n is an integer ranging from 10 to 10,000.

7. The block copolymer composition of claim 1 , wherein the diblock copolymer and the triblock copolymer each independently comprise a composite block represented by the following Formula 6, which is formed by binding of the polyolefin-based block and the polystyrene-based block:

wherein R 1 ′ and R 1 ″ are each independently hydrogen an alkyl having 1 to 20 carbon atoms an alkyl having 1 to 20 carbon atoms, which is substituted with silyl, an arylalkyl having 7 to 20 carbon atoms, or an arylalkyl having 7 to 20 carbon atoms, which is substituted with silyl, provided that R 1 ′ and R 1 ″ are different from each other,
R 2 is an aryl having 6 to 20 carbon atoms, or an aryl having 6 to 20 carbon atoms, which is substituted with a halogen, an alkyl having 1 to 12 carbon atoms, or a cycloalkyl having 3 to 12 carbon atoms.
0<p<1,
n′ is an integer ranging from 10 to 10,000, and
l is an integer ranging from 10 to 1,000.

8. The block copolymer composition of claim 1 , wherein the triblock copolymer comprises a structure represented by the following Formula 7:

wherein R 1 is hydrogen, an alkyl having 3 to 20 carbon atoms, or an alkyl having 3 to 20 carbon atoms, which is substituted with silyl,
R 2 and R 3 are each independently an aryl having 6 to 20 carbon atoms, or an aryl having 6 to 20 carbon atoms, which is substituted with a halogen, an alkyl having 1 to 12 carbon atoms, or a cycloalkyl having 3 to 12 carbon atoms,
l and m are each independently an integer ranging from 10 to 1,000,
n is an integer ranging from 10 to 10,000, and
a is an integer ranging from 1 to 50.

9. The block copolymer composition of claim 1 , wherein the triblock copolymer comprises a structure represented by the following Formula 8:

wherein R 1 ′ and R 1 ″ are each independently hydrogen, an alkyl having 1 to 20 carbon atoms, an alkyl having 1 to 20 carbon atoms, which is substituted with silyl, an arylalkyl having 7 to 20 carbon atoms, or an arylalkyl having 7 to 20 carbon atoms, which is substituted with silyl, provided that R 1 ′ and R 1 ″ are different from each other,
0<p<1,
R 2 and R 3 are each independently an aryl having 6 to 20 carbon atoms, or an aryl having 6 to 20 carbon atoms, which is substituted with a halogen, an alkyl having 1 to 12 carbon atoms, or a cycloalkyl having 3 to 12 carbon atoms
l and m are each independently an integer ranging from 10 to 1,000,
n′ is an integer ranging from 10 to 10,000, and
a is an integer ranging from 1 to 50.

10. The block copolymer composition of claim 1 , wherein the block copolymer composition comprises 10% by weight to 99% by weight of the polyolefin-based block, and comprises 20% by weight to 40% by weight of the polystyrene-based block.

11. The block copolymer composition of claim 1 , wherein the block copolymer composition has a weight average molecular weight of 58,000 g/mol to 500,000 g/mol.

12. The block copolymer composition of claim 1 , wherein the block copolymer composition has a tensile strength of 21.2 MPa to 30.6 , as measured according to ASTM D638.

13. The block copolymer composition of claim 1 , wherein the block copolymer composition has a modulus at 300% strain of 2 MPa to 15 MPa.

14. The block copolymer composition of claim 1 , wherein the block copolymer composition has an elongation at break of 800% to 2,000%.

Assignees

• Lg Chemical Ltd

Inventors

• Shin Eun Ji
• Lee Ki Soo
• Sa Seok Pil
• Hong Yoon Ki
• Lee Bun Yeoul

Classifications

• C08L53/00 Primary

  Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers · CPC title

• C08L53/02

  of vinyl-aromatic monomers and conjugated dienes · CPC title

• C08F293/00 Primary

  Macromolecular compounds obtained by polymerisation on to a macromolecule having groups capable of inducing the formation of new polymer chains bound exclusively at one or both ends of the starting macromolecule (on to polymers modified by introduction of unsaturated end groups C08F290/02) · CPC title

• C08L25/06

  Polystyrene · CPC title

• C08F2410/01

  Additive used together with the catalyst, excluding compounds containing Al or B · CPC title