Block copolymer composition

Patent metadata

Field	Value
Publication number	US-11312856-B2
Application number	US-201916977321-A
Country	US
Kind code	B2
Filing date	Mar 29, 2019
Priority date	Mar 30, 2018
Publication date	Apr 26, 2022
Grant date	Apr 26, 2022

Abstract

A block copolymer composition is disclosed herein. In some embodiments, a block copolymer composition includes a diblock copolymer and a triblock copolymer, each including a polyolefin-based block and a polystyrene-based block, wherein the polyolefin-based blocks are present between 45 wt % to 90 wt %, wherein the polystyrene-based blocks are present between 10 wt % to 55 wt %, wherein the difference (ΔT) between a thermal decomposition initiation temperature and a thermal decomposition termination temperature (ΔT) measured by Thermo-Gravimetric Analysis (TGA) is 55° C. or greater, and the diblock copolymer and the triblock copolymer do not have a residual unsaturated bond.

First claim

The invention claimed is:

1. A block copolymer composition, comprising:
a diblock copolymer and a triblock copolymer, wherein each include a polyolefin-based block and a polystyrene-based block,
wherein the polyolefin-based blocks of the diblock and the triblock copolymers are present between 45 wt % to 90 wt %, and the polystyrene-based blocks of the diblock and the triblock copolymers are present between 10 wt % to 55 wt %, based on the total weight of the block copolymer composition,
wherein a difference (ΔT) between a thermal decomposition initiation temperature and a thermal decomposition termination temperature, measured by Thermo-Gravimetric Analysis (TGA), is 55° C. or greater,
wherein the diblock copolymer and the triblock copolymer do not have a residual unsaturated bond therein, and
wherein the block copolymer composition has weight average molecular weight (Mw) of 60,000 g/mol to 120,000 g/mol.

2. The block copolymer composition of claim 1 , wherein the polyolefin-based block comprises a repeating unit derived from ethylene and a repeating unit derived from alpha-olefin, and the polyolefin-based block comprises the repeating unit derived from ethylene in an amount of 40 wt % to 60 wt % and the repeating unit derived from alpha-olefin in an amount of 10 wt % to 35 wt % based on the total weight of block copolymer composition.

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

in Formula 1 above,
R 1 is hydrogen, alkyl having 1 to 20 carbon atoms, alkyl having 1 to 20 carbon atoms substituted with silyl, arylalkyl having 7 to 20 carbon atoms, or arylalkyl having 7 to 20 carbon atoms substituted with silyl, and
n is an integer of 10 to 10,000.

4. The block copolymer composition of claim 2 , wherein the polyolefin-based block comprises a repeating unit represented by Formula 2 below:

in Formula 2 above,
R 1 ′ and R 1 ″ are each independently hydrogen, alkyl having 1 to 20 carbon atoms, alkyl having 1 to 20 carbon atoms substituted with silyl, arylalkyl having 7 to 20 carbon atoms, or arylalkyl having 7 to 20 carbon atoms substituted with silyl, wherein R 1 ′ and R 1 ″ are different from each other,
0<p<1, and
n′ is an integer of 10 to 10,000.

5. The block copolymer composition of claim 1 , wherein the polystyrene-based block comprises a repeating unit represented by Formula 6 below and a repeating unit represented by Formula 9 below:

in the formulas above,
R 2 and R 3 are aryl having 6 to 20 carbon atoms, or aryl having 6 to 20 carbon atoms substituted with halogen, alkyl having 1 to 12 carbon atoms, cycloalkyl having 3 to 12 carbon atoms, alkoxy having 1 to 8 carbon atoms or aryl having 6 to 12 carbon atoms, and
1 and m are each independently an integer of 10 to 1,000.

6. The block copolymer composition of claim 5 , wherein R 2 and R 3 are each independently phenyl, or phenyl substituted or unsubstituted with halogen, alkyl having 1 to 8 carbon atoms, cycloalkyl having 3 to 12 carbon atoms, alkoxy having 1 to 8 carbon atoms or aryl having 6 to 12 carbon atoms.

7. The block copolymer composition of claim 1 , wherein the triblock copolymer comprises a first block including one or more kinds of repeating units represented by Formula 1 below, a second block including a repeating unit represented by Formula 6 below, and a third block including a repeating unit represented by Formula 9 below:

in the formulas above,
R 1 is hydrogen, alkyl having 1 to 20 carbon atoms, alkyl having 1 to 20 carbon atoms substituted with silyl, arylalkyl having 7 to 20 carbon atoms, or arylalkyl having 7 to 20 carbon atoms substituted with silyl,
R 2 and R 3 are aryl having 6 to 20 carbon atoms, or aryl having 6 to 20 carbon atoms substituted with halogen, alkyl having 1 to 12 carbon atoms, cycloalkyl having 3 to 12 carbon atoms, alkoxy having 1 to 8 carbon atoms or aryl having 6 to 12 carbon atoms,
n is an integer of 10 to 10,000, and
1 and m are each independently an integer of 10 to 1,000.

8. The block copolymer composition of claim 7 , comprising a composite block represented by Formula 8 below, the composite block formed by coupling the first block including a repeating unit of Formula 1 above and the second block including a repeating unit of Formula 6:

in Formula 8 above,
R 1 ′ and R 1 ″ are each independently hydrogen, alkyl having 1 to 20 carbon atoms, alkyl having 1 to 20 carbon atoms substituted with silyl, arylalkyl having 7 to 20 carbon atoms, or arylalkyl having 7 to 20 carbon atoms substituted with silyl, wherein R 1 ′ and R 1 ″ are different from each other,
R 2 is aryl having 6 to 20 carbon atoms, or aryl having 6 to 20 carbon atoms substituted with halogen, alkyl having 1 to 12 carbon atoms, cycloalkyl having 3 to 12 carbon atoms, alkoxy having 1 to 8 carbon atoms or aryl having 6 to 12 carbon atoms,
0<p<1,
n′ is an integer of 10 to 10,000, and
1 is an integer of 10 to 1,000.

9. The block copolymer composition of claim 7 , comprising a structure represented by Formula 13 below:

in Formula 13 above,
R 1 ′ and R 1 ″ are each independently hydrogen, alkyl having 1 to 20 carbon atoms, alkyl having 1 to 20 carbon atoms substituted with silyl, arylalkyl having 7 to 20 carbon atoms, or arylalkyl having 7 to 20 carbon atoms substituted with silyl, wherein R 1 ′ and R 1 ″ are different from each other,
R 2 and R 3 are each independently aryl having 6 to 20 carbon atoms, or aryl having 6 to 20 carbon atoms substituted with halogen, alkyl having 1 to 12 carbon atoms, cycloalkyl having 3 to 12 carbon atoms, alkoxy having 1 to 8 carbon atoms or aryl having 6 to 12 carbon atoms,
0<p<1,
n′ is an integer of 10 to 10,000, and
1 and m are each independently an integer of 10 to 1,000, and
a is an integer of 1 to 50.

10. The block copolymer composition of claim 1 , comprising 19 wt % or less of the diblock copolymer.

11. The block copolymer composition of claim 1 , wherein a polydispersity index (PDI) of 1.4 to 2.0.

12. The block copolymer composition of claim 1 , wherein the block copolymer composition has a weight average molecular weight (Mw) thereof of 60,000 g/mol to 100,000 g/mol.

13. The block copolymer composition of claim 1 , wherein ΔT is 55° C. to 70° C.

14. The block copolymer composition of claim 1 , wherein ΔT is 57° C. to 65° C.

15. The block copolymer composition of claim 1 , wherein the thermal decomposition termination temperature is 440° C. to 470° C. and the thermal decomposition initiation temperature is 385° C. to 405° C.

Assignees

• Lg Chemical Ltd

Inventors

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

Classifications

• C08F297/08

  polymerising mono-olefins · CPC title

• C08F210/14

  Monomers containing five or more carbon atoms · CPC title

• C08F297/083 Primary

  the monomers being ethylene or propylene · CPC title

• C08F2410/01

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