Block copolymer composition

Patent metadata

Field	Value
Publication number	US-11535741-B2
Application number	US-201916977347-A
Country	US
Kind code	B2
Filing date	Mar 29, 2019
Priority date	Mar 30, 2018
Publication date	Dec 27, 2022
Grant date	Dec 27, 2022

Abstract

A block copolymer composition is disclosed herein. In some embodiments, a block copolymer composition has a weight average molecular weight (M w ) of 70,000 g/mol to 120,000 g/mol, a polydispersity index (PDI) of 1.0 to 2.0, a glass transition temperature (T g ) of −55° C. to −30° C., and a melt index (MI), measured at 230° C. and a loading condition of 5 kg, of 0.2 g/10 minutes to 3.0 g/10 minutes. The block copolymer composition has excellent processability.

First claim

The invention claimed is:

1. A block copolymer composition, comprising:
a triblock copolymer and a diblock copolymer, wherein the block copolymer composition having:
(1) a weight average molecular weight (M w ) of 70,000 g/mol to 120,000 g/mol;
(2) a polydispersity index (PDI) of 1.0 to 2.0;
(3) a glass transition temperature (T g ) of −55° C. to −30° C.; and
(4) a melt index (MI), measured at 230° C. and a loading condition of 5 kg, of 0.2 g/10 minutes to 3.0 g/10 minutes,
wherein the triblock copolymer comprises:
a first block comprising one or more repeating units represented by the following Formula 1;
a second block comprising a repeating unit represented by the following Formula 6; and
a third block comprising a repeating unit represented by the following Formula 9:

and
wherein the block copolymer composition comprises a composite block represented by the following Formula 8, which is formed by binding of the first block comprising the repeating unit of Formula 1 and the second block comprising the repeating unit of Formula 6:

wherein R 1 is 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,
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 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, a cycloalkyl having 3 to 12 carbon atoms, an alkoxy having 1 to 8 carbon atoms, or an aryl having 6 to 12 carbon atoms,
0<p<1,
n is an integer ranging from 10 to 10,000,
n′ is an integer ranging from 10 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 the weight average molecular weight (M w ) ranges from 74,000 g/mol to 103,000 g/mol.

3. The block copolymer composition of claim 1 , wherein the polydispersity index (PDI) ranges from 1.4 to 1.7.

4. The block copolymer composition of claim 1 , wherein the glass transition temperature (T g ) ranges from −52° C. to −39° C.

5. The block copolymer composition of claim 1 , wherein the melt index ranges from 0.3 g/10 minutes to 2.1 g/10 minutes.

6. The block copolymer composition of claim 1 , wherein the triblock copolymer comprises a polystyrene-polyolefin-polystyrene triblock copolymer and wherein the diblock copolymer comprises a polyolefin-polystyrene diblock copolymer.

7. The block copolymer composition of claim 6 , wherein the block copolymer composition comprises the diblock copolymer at a content of 19% by weight or less.

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

9. 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.

10. A block copolymer composition, comprising:
a triblock copolymer and a diblock copolymer, wherein the block copolymer composition having:
(1) a weight average molecular weight (M w ) of 70,000 g/mol to 120,000 g/mol;
(2) a polydispersity index (PDI) of 1.0 to 2.0;
(3) a glass transition temperature (T g ) of −55° C. to −30° C.; and
(4) a melt index (MI), measured at 230° C. and a loading condition of 5 kg, of 0.2 g/10 minutes to 3.0 g/10 minutes,
wherein the triblock copolymer comprises:
a first block comprising one or more repeating units represented by the following Formula 1;
a second block comprising a repeating unit represented by the following Formula 6; and
a third block comprising a repeating unit represented by the following Formula 9:

and
wherein the block copolymer composition comprises a structure represented by the following Formula 13:

wherein R 1 is 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,
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, and
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, a cycloalkyl having 3 to 12 carbon atoms, an alkoxy having 1 to 8 carbon atoms, or an aryl having 6 to 12 carbon atoms,
0<p<1,
n is an integer ranging from 10 to 10,000,
n′ is an integer ranging from 10 to 10,000,
l and m are each independently an integer ranging from 10 to 1,000, and
a is an integer ranging from 1 to 50.

11. The block copolymer composition of claim 1 , wherein the first block is present in an amount of 10% by weight to 99% by weight, and wherein the second and third blocks are present in a total amount of 1% by weight to 90% by weight, based on the total weight of the block copolymer composition.

12. The block copolymer composition of claim 10 , wherein the weight average molecular weight (M w ) ranges from 74,000 g/mol to 103,000 g/mol.

13. The block copolymer composition of claim 10 , wherein the polydispersity index (PDI) ranges from 1.4 to 1.7.

14. The block copolymer composition of claim 10 , wherein the glass transition temperature (T g ) ranges from −52° C. to −39° C.

15. The block copolymer composition of claim 10 , wherein the melt index ranges from 0.3 g/10 minutes to 2.1 g/10 minutes.

16. The block copolymer composition of claim 10 , wherein the triblock copolymer comprises a polystyrene-polyolefin-polystyrene triblock copolymer and wherein the diblock copolymer comprises a polyolefin-polystyrene diblock copolymer.

17. The block copolymer composition of claim 16 , wherein the block copolymer composition comprises the diblock copolymer at a content of 19% by weight or less.

18. The block copolymer composition of claim 10 , wherein the first block is present in an amount of 10% by weight to 99% by weight, and wherein the second and third blocks are present in a total amount of 1% by weight to 90% by weight, based on the total weight of the block copolymer composition.

Assignees

• Lg Chemical Ltd

Inventors

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

Classifications

• C07F3/06

  Zinc compounds · CPC title

• C08F10/14

  Monomers containing five or more carbon atoms · 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

• C08F210/16

  Copolymers of ethene with alpha-alkenes, e.g. EP rubbers · CPC title

• C08F4/44

  selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides · CPC title