Block copolymer and method for preparing the same

Patent metadata

Field	Value
Publication number	US-11279776-B2
Application number	US-201916574885-A
Country	US
Kind code	B2
Filing date	Sep 18, 2019
Priority date	Sep 20, 2018
Publication date	Mar 22, 2022
Grant date	Mar 22, 2022

Abstract

A block copolymer and a method for preparing the same are disclosed. The method comprises the following steps: (A) mixing a compound of formula (I), a catalyst of formula (II), and a first solvent to obtain a first mixture; (B) adding a first monomer into the first mixture for reaction to obtain a second mixture; and (C) adding a second monomer into the second mixture for reaction to obtain a third mixture; wherein the compound of formula (I) and the catalyst of formula (II) are as defined in the specification.

First claim

What is claimed is:

1. A method for preparing a block copolymer, comprising:
(A) mixing a compound of formula (I), a catalyst of formula (II), and a first solvent to obtain a first mixture:

wherein A 1 is a bond, O, or S;
R 1 , R 2 , and R 3 are each independently H, a C 1-6 alkyl, —COOR 4 , or —CH 2 P(═O)R 5 R 6 ; or R 1 and R 2 are bonded to each other to form a C 4-8 cycloalkyl group or a C 3-7 heterocycloalkyl group; or R 2 and R 3 are bonded to each other to form a C 5-8 cycloalkyl group; and
OTMS is OSiMe 3 ;
wherein R 4 , R 5 , and R 6 are each independently a C 1-6 alkyl, a C 1-6 alkoxyl, -OTMS, or an amino group substituted by a C 1-6 alkyl;
[M(O) a ] m+ X b n−   (II)

wherein M(O) a is VO, VO 3 , ZrO, HfO, WO 2 , MoO 2 , CrO 2 , or ReO 3 ;
X is Cl, Br, I, OAc, OC(O)Ar, OC(O)(CF 2 ) c CF 3 , OC(O)C 12 H 25 , OTf, OTs, SO 4 , SO 3 C 12 H 25 , acetylacetonate (acac), or a mixture thereof;
b is an integer from 1 to 4;
m is an integer from 2 to 4;
n is an integer from 1 to 2;
c is an integer from 1 to 6;
Ar is a C 6-20 aryl;
Ac is C(O)CH 3 ;
Tf is trifluoromethylsulfonyl, and
Ts is toluenesulfonyl;
(B) adding a first monomer into the first mixture to obtain a second mixture; and
(C) adding a second monomer into the second mixture to obtain a third mixture.

2. The method according to claim 1 , further comprising a step of (D) adding the third mixture into a second solvent.

3. The method according to claim 2 , wherein the second solvent is water, an alcohol, a C 5-10 alkane, or a mixture thereof.

4. The method according to claim 1 , wherein the first monomer and the second monomer are each independently an acrylate compound.

5. The method according to claim 1 , wherein the first monomer and the second monomer are each independently a compound of formula (III) below:

wherein A 2 is O or S;
R 7 is H, or a C 1-6 alkyl; and
R 8 is a C 1-12 alkyl, (CH 2 ) q N(R 11 ) 2 , CH 2 (CH 2 OCH 2 ) r CH 2 N(R 12 ) 2 , or CH 2 (CH 2 OCH 2 ) s CH 2 OR 13 ;
wherein R 11 , R 12 , and R 13 are each independently a C 1-6 alkyl; and q, r, and s are each independently an integer from 1 to 10.

6. The method according to claim 1 , wherein the first monomer and the second monomer are each independently a compound of formula (IV) below:

wherein Y is O, NH, or S;
R 9 is H or a C 1-6 alkyl;
R 10 is a C 1-6 alkyl or a C 6-20 aryl; and
p is an integer from 1 to 12.

7. The method according to claim 1 , further comprising adding a third monomer into the third mixture to obtain a fourth mixture after obtaining the third mixture in step (C).

8. The method according to claim 7 , further comprising a step of (E) adding the fourth mixture into a second solvent.

9. The method according to claim 8 , wherein the second solvent is water, an alcohol, a C 5-10 alkane, or a mixture thereof.

10. The method according to claim 7 , wherein the first monomer, the second monomer, and the third monomer are each independently an acrylate compound.

11. The method according to claim 1 , wherein the first solvent is an ether solvent.

12. The method according to claim 1 , wherein the catalyst is present in an amount of 0.1 wt % to 20 wt %, based on a total weight of the first mixture.

Assignees

• Univ Nat Tsing Hua

Inventors

• Chen Chien-Tien
• Liao Yi-Ya

Classifications

• C08F220/38

  Esters containing sulfur · CPC title

• C08F4/70

  Iron group metals, platinum group metals or compounds thereof · CPC title

• C08F4/7098

  Nickel or compounds thereof · CPC title

• C08F4/7095

  Cobalt, nickel or compounds thereof (C08F4/7001 - C08F4/7093 take precedence) · CPC title

• C08F4/60

  together with refractory metals, iron group metals, platinum group metals, manganese, rhenium {technetium} or compounds thereof · CPC title