IP Library Granted Patent US 11,780,946
Granted Patent B2
US 11,780,946 · App. 17/152,131 · Granted Oct 10, 2023

Alternating copolymer, method of producing alternating copolymer, method of producing polymeric compound, and method of forming resist pattern

Inventors: Akiyoshi Yamazaki (Kawasaki, JP); Daisuke Kawana (Kawasaki, JP); Yoshitaka Komuro (Kawasaki, JP); Masatoshi Arai (Kawasaki, JP); Nobuhiro Michibayashi (Kawasaki, JP); Takatoshi Inari (Kawasaki, JP)
Assignee: TOKYO OHKA KOGYO CO., LTD.
C08F220/58C08F220/12G03F7/038G03F7/039
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Quick Facts
Patent No.
US 11,780,946
App. No.
17/152,131
Granted
Oct 10, 2023
Kind
B2
Abstract

An alternating copolymer including a structural unit (a0-1) represented by general formula (a0-1) and a structural unit (a0-2) represented by general formula (a0-2) in which Rp 01 represents a hydrogen atom or the like; Vp 01 represents a single bond or a divalent linking group; Rp 02 and Rp 03 each independently represents a hydrocarbon group which may have a substituent, or Rp 02 and Rp 03 are mutually bonded to form a ring; Rp 04 represents a hydrogen atom, a C1-C5 alkyl group or a C1-C5 halogenated alkyl group; Rp 05 represents an alkyl group, an alkoxy group, a halogen atom, a halogenated alkyl group, a cyano group or a hydroxy group; Rp 06 represents a linear or branched aliphatic hydrocarbon group; and m represents an integer of 0 to 4

Claims (59)

1. An alternating copolymer comprising:

a structural unit (a0-1) represented by general formula (a0-1) shown below, and

a structural unit (a0-2) represented by general formula (a0-2) shown below:

 wherein Rp 01 represents a hydrogen atom, an alkyl group of 1 to 5 carbon atoms or a halogenated alkyl group of 1 to 5 carbon atoms; Vp 01 represents a single bond or a divalent linking group; Rp 02 and Rp 03 each independently represents a hydrocarbon group which may have a substituent; Rp 02 and Rp 03 may be mutually bonded to form a ring; Rp 04 represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms or a halogenated alkyl group having 1 to 5 carbon atoms; Rp 05 represents an alkyl group, an alkoxy group, a halogen atom, a halogenated alkyl group, a cyano group or a hydroxy group; Rp 06 represents a linear or branched aliphatic hydrocarbon group; and n 1 represents an integer of 0 to 4.

2. A method of producing an alternating copolymer, comprising:

copolymerizing a compound represented by general formula (m0-1) shown below with a compound represented by general formula (m0-2) shown below by living radical polymerization to obtain an alternating copolymer represented by general formula (p0) shown below:

 wherein Rp 01 represents a hydrogen atom, an alkyl group of 1 to 5 carbon atoms or a halogenated alkyl group of 1 to 5 carbon atoms; Vp 01 represents a single bond or a divalent linking group; Rp 02 and Rp 03 each independently represents a hydrocarbon group which may have a substituent; Rp 02 and Rp 03 may be mutually bonded to form a ring; Rp 04 represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms or a halogenated alkyl group having 1 to 5 carbon atoms; Rp 05 represents an alkyl group, an alkoxy group, a halogen atom, a halogenated alkyl group, a cyano group or a hydroxy group; Rp 06 represents a linear or branched aliphatic hydrocarbon group; and n 1 represents an integer of 0 to 4.

3. A method of producing a polymeric compound, comprising:

copolymerizing a compound represented by general formula (m0-1) shown below with a compound represented by general formula (m0-2) shown below by living radical polymerization to obtain an alternating copolymer represented by general formula (p0) shown below;

subjecting the alternating copolymer to hydrolysis to obtain a first polymeric compound precursor represented by general formula (Pre-1a) shown below;

reacting the first polymeric compound precursor with a compound represented by general formula (Add-1) shown below to obtain a second polymeric compound precursor represented by general formula (Pre-1b-1) shown below; and

subjecting the second polymeric compound precursor to hydrolysis to obtain a polymeric compound represented by general formula (p1) shown below:

 wherein Rp 01 represents a hydrogen atom, an alkyl group of 1 to 5 carbon atoms or a halogenated alkyl group of 1 to 5 carbon atoms; Vp 01 represents a single bond or a divalent linking group; Rp 02 and Rp 03 each independently represents a hydrocarbon group which may have a substituent; Rp 02 and Rp 03 may be mutually bonded to form a ring; Rp 04 represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms or a halogenated alkyl group having 1 to 5 carbon atoms; Rp 05 represents an alkyl group, an alkoxy group, a halogen atom, a halogenated alkyl group, a cyano group or a hydroxy group; Rp 06 represents a linear or branched aliphatic hydrocarbon group; and n 1 represents an integer of 0 to 4;

 wherein Rp 01 represents a hydrogen atom, an alkyl group of 1 to 5 carbon atoms or a halogenated alkyl group of 1 to 5 carbon atoms; Vp 01 represents a single bond or a divalent linking group; Rp 04 represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms or a halogenated alkyl group having 1 to 5 carbon atoms; Rp 05 represents an alkyl group, an alkoxy group, a halogen atom, a halogenated alkyl group, a cyano group or a hydroxy group; Rp 06 represents a linear or branched aliphatic hydrocarbon group; n 1 represents an integer of 0 to 4; Ra 001 , Ra 002 and Ra 003 each independently represents a hydrocarbon group which may have a substituent; Ra 002 and Ra 003 may be mutually bonded to form a ring;

 wherein Rp 01 and Rp 04 each independently represents a hydrogen atom, an alkyl group of 1 to 5 carbon atoms or a halogenated alkyl group of 1 to 5 carbon atoms; Vp 01 represents a single bond or a divalent linking group; Ra 001 , Ra 002 and Ra 003 each independently represents a hydrocarbon group which may have a substituent; Ra 002 and Ra 003 may be mutually bonded to form a ring; Rp 05 represents an alkyl group, an alkoxy group, a halogen atom, a halogenated alkyl group, a cyano group or a hydroxy group; and n 1 represents an integer of 0 to 4.

4. A method of forming a resist pattern, comprising:

obtaining a polymeric compound (A01) represented by general formula (p1) by the method of producing a polymeric compound according to claim 3 ;

mixing the polymeric compound (A01) with an organic solvent to prepare a resist composition;

forming a resist film on a substrate using the resist composition;

exposing the resist film; and

developing the exposed resist film to form a resist pattern.

5. A method of producing a polymeric compound, comprising:

copolymerizing a compound represented by general formula (m0-1) shown below with a compound represented by general formula (m0-2) shown below by living radical polymerization to obtain an alternating copolymer represented by general formula (p0) shown below;

subjecting the alternating copolymer to hydrolysis to obtain a polymeric compound precursor represented by general formula (Pre-2a) shown below; and

reacting the polymeric compound precursor with a compound represented by general formula (Add-1) shown below to obtain a polymeric compound represented by general formula (p 1) shown below:

 wherein Rp 01 represents a hydrogen atom, an alkyl group of 1 to 5 carbon atoms or a halogenated alkyl group of 1 to 5 carbon atoms; Vp 01 represents a single bond or a divalent linking group; Rp 02 and Rp 03 each independently represents a hydrocarbon group which may have a substituent; Rp 02 and Rp 03 may be mutually bonded to form a ring; Rp 04 represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms or a halogenated alkyl group having 1 to 5 carbon atoms; Rp 05 represents an alkyl group, an alkoxy group, a halogen atom, a halogenated alkyl group, a cyano group or a hydroxy group; Rp 06 represents a linear or branched aliphatic hydrocarbon group; and n 1 represents an integer of 0 to 4;

 wherein Rp 01 represents a hydrogen atom, an alkyl group of 1 to 5 carbon atoms or a halogenated alkyl group of 1 to 5 carbon atoms; Vp 01 represents a single bond or a divalent linking group; Rp 04 represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms or a halogenated alkyl group having 1 to 5 carbon atoms; Rp 05 represents an alkyl group, an alkoxy group, a halogen atom, a halogenated alkyl group, a cyano group or a hydroxy group; n 1 represents an integer of 0 to 4; Ra 001 , Ra 002 and Ra 003 each independently represents a hydrocarbon group which may have a substituent; Ra 002 and Ra 003 may be mutually bonded to form a ring.

6. A method of forming a resist pattern, comprising:

obtaining a polymeric compound (A01) represented by general formula (p1) by the method of producing a polymeric compound according to claim 5 ;

mixing the polymeric compound (A01) with an organic solvent to prepare a resist composition;

forming a resist film on a substrate using the resist composition;

exposing the resist film; and

developing the exposed resist film to form a resist pattern.

7. A method of producing a polymeric compound, comprising:

copolymerizing a compound represented by general formula (m0-1) shown below with a compound represented by general Formula (m0-2) shown below by living radical polymerization to obtain an alternating copolymer represented by general formula (p0) shown below;

subjecting the alternating copolymer to hydrolysis to obtain a first polymeric compound precursor represented by general formula (Pre-1a) shown below:

reacting the first polymeric compound with a compound represented by general formula (Add-2) shown below to obtain a second polymeric compound precursor represented by general formula (Pre-1b-2) shown below; and

subjecting the second polymeric compound precursor to hydrolysis to obtain a polymeric compound represented by general formula (p2) shown below:

 wherein Rp 01 represents a hydrogen atom, an alkyl group of 1 to 5 carbon atoms or a halogenated alkyl group of 1 to 5 carbon atoms; Vp 01 represents a single bond or a divalent linking group; Rp 02 and Rp 03 each independently represents a hydrocarbon group which may have a substituent; Rp 02 and Rp 03 may be mutually bonded to form a ring; Rp 04 represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms or a halogenated alkyl group having 1 to 5 carbon atoms; Rp 05 represents an alkyl group, an alkoxy group, a halogen atom, a halogenated alkyl group, a cyano group or a hydroxy group; Rp 06 represents a linear or branched aliphatic hydrocarbon group; and n 1 represents an integer of 0 to 4;

 wherein Rp 01 represents a hydrogen atom, an alkyl group of 1 to 5 carbon atoms or a halogenated alkyl group of 1 to 5 carbon atoms; Vp 01 represents a single bond or a divalent linking group; Rp 04 represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms or a halogenated alkyl group having 1 to 5 carbon atoms; Rp 05 represents an alkyl group, an alkoxy group, a halogen atom, a halogenated alkyl group, a cyano group or a hydroxy group; Rp 06 represents a linear or branched aliphatic hydrocarbon group; n 1 represents an integer of 0 to 4; Ra 04 and Ra 05 each independently represents a hydrogen atom or an alkyl group; Ra 006 represents a hydrocarbon group, provided that Ra 006 may be bonded to Ra 004 or Ra 005 to form a ring; and X represents a halogen atom;

 wherein Rp 01 and Rp 04 each independently represents a hydrogen atom, an alkyl group of 1 to 5 carbon atoms or a halogenated alkyl group of 1 to 5 carbon atoms; Vp 01 represents a single bond or a divalent linking group; Ra 004 and Ra 005 each independently represents a hydrogen atom or an alkyl group; Ram6 represents a hydrocarbon group, provided that Ra 006 may be bonded to Ra 004 or Ra 005 to form a ring; Rp 05 represents an alkyl group, an alkoxy group, a halogen atom, a halogenated alkyl group, a cyano group or a hydroxy group; and n 1 represents an integer of 0 to 4.

8. A method of forming a resist pattern, comprising:

obtaining a polymeric compound (A02) represented by general formula (p2) by the method of producing a polymeric compound according to claim 7 ;

mixing the polymeric compound (A02) with an organic solvent to prepare a resist composition;

forming a resist film on a substrate using the resist composition;

exposing the resist film; and

developing the exposed resist film to form a resist pattern.

9. A method of producing a polymeric compound, comprising:

copolymerizing a compound represented by general formula (m0-1) shown below with a compound represented by general formula (m0-2) shown below by living radical polymerization to obtain an alternating copolymer represented by general formula (p0) shown below;

subjecting the alternating copolymer to hydrolysis to obtain a polymeric compound precursor represented by general formula (Pre-2a) shown below; and

reacting the polymeric compound precursor with a compound represented by general formula (Add-2) shown below to obtain a polymeric compound represented by general formula (p2) shown below:

 wherein Rp 01 represents a hydrogen atom, an alkyl group of 1 to 5 carbon atoms or a halogenated alkyl group of 1 to 5 carbon atoms; Vp 01 represents a single bond or a divalent linking group; Rp 02 and Rp 03 each independently represents a hydrocarbon group which may have a substituent; Rp 02 and Rp 03 may be mutually bonded to form a ring; Rp 04 represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms or a halogenated alkyl group having 1 to 5 carbon atoms; Rp 05 represents an alkyl group, an alkoxy group, a halogen atom, a halogenated alkyl group, a cyano group or a hydroxy group; Rp 06 represents a linear or branched aliphatic hydrocarbon group; and n 1 represents an integer of 0 to 4;

 wherein Rp 01 represents a hydrogen atom, an alkyl group of 1 to 5 carbon atoms or a halogenated alkyl group of 1 to 5 carbon atoms; Vp 01 represents a single bond or a divalent linking group; Rp 04 represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms or a halogenated alkyl group having 1 to 5 carbon atoms; Rp 05 represents an alkyl group, an alkoxy group, a halogen atom, a halogenated alkyl group, a cyano group or a hydroxy group; n 1 represents an integer of 0 to 4; Ra 004 and Ra 005 each independently represents a hydrogen atom or an alkyl group; Ra 006 represents a hydrocarbon group, provided that Ra 006 may be bonded to Ra 004 or Ra 005 to form a ring; and X represents a halogen atom.

10. A method of forming a resist pattern, comprising:

obtaining a polymeric compound (A02) represented by general formula (p2) by the method of producing a polymeric compound according to claim 9 ;

mixing the polymeric compound (A02) with an organic solvent to prepare a resist composition;

forming a resist film on a substrate using the resist composition;

exposing the resist film; and

developing the exposed resist film to form a resist pattern.

Assignments (2)
CONFIRMATORY LICENSE Recorded Nov 2, 2023
From: CLEVELAND CLINIC FOUNDATION
To: NATIONAL INSTITUTES OF HEALTH (NIH), U.S. DEPT. OF HEALTH AND HUMAN SERVICES (DHHS), U.S. GOVERNMENT
Reel/Frame 065431/0056 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 2, 2021
From: YAMAZAKI, AKIYOSHI; KAWANA, DAISUKE; KOMURO, YOSHITAKA; ARAI, MASATOSHI; MICHIBAYASHI, NOBUHIRO; INARI, TAKATOSHI
To: TOKYO OHKA KOGYO CO., LTD.
Reel/Frame 055116/0835 →
Priority Claims (2)
JP 2020-008739 · Jan 22, 2020 · national
JP 2020-008755 · Jan 22, 2020 · national
Continuity (1)
Related Publication 20210230332A1 · Jul 29, 2021