Photosensitive resin composition, lithographic printing plate precursor, and method for producing lithographic printing plate

Patent metadata

Field	Value
Publication number	US-10564545-B2
Application number	US-201615278715-A
Country	US
Kind code	B2
Filing date	Sep 28, 2016
Priority date	Mar 31, 2014
Publication date	Feb 18, 2020
Grant date	Feb 18, 2020

Abstract

A photosensitive resin composition contains a polymer compound having a linking group represented by Formula A-1 in the main chain; and an infrared absorbing material. In Formula A-1, R 1 and R 2 each independently represent a hydrogen atom or a monovalent organic group, and X 1 is a specific linking group.

First claim

What is claimed is:

1. A lithographic printing plate precursor, comprising:
an image recording layer including a photosensitive resin composition on a support having a hydrophilic surface,
wherein the photosensitive resin composition comprises:
a polymer compound having a weight average molecular weight of from 5,000 to 300,000 and having a linking group represented by Formula A-1 in a main chain; and
an infrared absorbing material,

wherein in Formula A-1, R 1 and R 2 each independently represent a hydrogen atom or a monovalent organic group, and X 1 represents a linking group represented by any one of the following Formulas A-2 to A-6, and

in Formulas A-2 to A-6, R 3 represents a halogen atom or a monovalent organic group, a2i represents an integer of 1 to 4, a2j represents an integer of 0 to 3, a2i+a2j is 1 to 4, R 4 and R 5 each independently represent a halogen atom or a monovalent organic group, a3i and a3j each independently represent an integer of 0 to 2, a3k and a3l each independently represent an integer of 0 to 4, a3i+a3k is 1 to 6, a3j+a3l is 0 to 6−(a3i+a3k), R 6 and R 7 each independently represent a halogen atom or a monovalent organic group, a4i and a4k each independently represent an integer of 0 to 2, a4i+a4k is 1 to 4, a4j and a4l each independently represent an integer of 0 to 2, a4j+a4l is 0 to 4−(a4i+a4k), Y A1 represents an aromatic hydrocarbon ring or an aliphatic hydrocarbon ring, R 8 and R 9 each independently represent a halogen atom or a monovalent organic group, a5i and a5k each independently represent an integer of 0 to 3, a5i+a5k is 1 to 6, a5j and a5l each independently represent an integer of 0 to 3, a5j+a5l is 0 to 6−(a5i+a5k), R 10 and R 11 each independently represent a halogen atom or a monovalent organic group, a6k represents an integer of 0 to 2, a6i represents an integer of 0 to 3, a6i+a6k is 1 to 5, a6l represents an integer of 0 to 2, a6j represents an integer of 0 to 3, a6l+a6j is 0 to 5−(a6i+a6k), and Y A2 represents an aromatic hydrocarbon ring or an aliphatic hydrocarbon ring.

2. The lithographic printing plate precursor according to claim 1 which is a positive type.

3. The lithographic printing plate precursor according to claim 1 which is a positive type lithographic printing plate precursor having an image recording layer formed of an underlayer and an upper layer on a support,
wherein the photosensitive resin composition is contained in the underlayer and/or the upper layer.

4. The lithographic printing plate precursor according to claim 3 ,
wherein the photosensitive resin composition is contained in the underlayer.

5. A method for producing a lithographic printing plate, comprising in the following order:
image-exposing the lithographic printing plate precursor according to claim 1 ; and
developing using an alkali aqueous solution with a pH of 8.5 to 13.5.

6. The lithographic printing plate precursor according to claim 1 ,
wherein the polymer compound includes a linking group represented by the following Formula A-7 in the main chain, and

in Formula A-7, R 12 represents a single bond or a divalent linking group, R 13 and R 14 each independently represent a hydrogen atom or a monovalent organic group, and X 2 and X 3 each independently represent a linking group represented by any one of Formulas A-2 to A-6.

7. The lithographic printing plate precursor according to claim 6 ,
wherein the linking group represented by Formula A-7 is a linking group represented by the following Formula A-8, and

in Formula A-8, R 15 represents a single bond or a divalent linking group, R 16 and R 17 each independently represent a halogen atom or a monovalent organic group, R 18 and R 19 each independently represent a hydrogen atom or a monovalent organic group, a, b, c and d each independently represent an integer of 0 to 4, a+b is 1 to 8, and c+d is 0 to 8−(a+b).

8. The lithographic printing plate precursor according to claim 1 ,
wherein the polymer compound further has a linking group represented by the following Formula A-9 in the main chain, and

in Formula A-9, R A9 represents a hydrogen atom or a monovalent organic group.

9. The lithographic printing plate precursor according to claim 6 ,
wherein the polymer compound further has a linking group represented by the following Formula A-9 in the main chain, and

in Formula A-9, R A9 represents a hydrogen atom or a monovalent organic group.

10. The lithographic printing plate precursor according to claim 7 ,
wherein the polymer compound further has a linking group represented by the following Formula A-9 in the main chain, and

in Formula A-9, R A9 represents a hydrogen atom or a monovalent organic group.

11. The lithographic printing plate precursor according to claim 1 ,
wherein the polymer compound has a linking group represented by the following Formula B-1 or B-2 in the main chain, and

in Formula B-1 and B-2, L 1 represents a single bond or a divalent linking group, and R B21 represents a hydrogen atom or a monovalent organic group.

12. The lithographic printing plate precursor according to claim 8 ,
wherein the polymer compound has a linking group represented by the following Formula B-1 or B-2 in the main chain, and

in Formula B-1 and B-2, L 1 represents a single bond or a divalent linking group, and R B21 represents a hydrogen atom or a monovalent organic group.

13. The lithographic printing plate precursor according to claim 9 ,
wherein the polymer compound has a linking group represented by the following Formula B-1 or B-2 in the main chain, and

in Formula B-1 and B-2, L 1 represents a single bond or a divalent linking group, and R B21 represents a hydrogen atom or a monovalent organic group.

14. The lithographic printing plate precursor according to claim 10 ,
wherein the polymer compound has a linking group represented by the following Formula B-1 or B-2 in the main chain, and

in Formula B-1 and B-2, L 1 represents a single bond or a divalent linking group, and R B21 represents a hydrogen atom or a monovalent organic group.

15. The lithographic printing plate precursor according to claim 1 ,
wherein the polymer compound further has at least one selected from the group consisting of linking groups represented by each of the following Formulas B-3 to B-

Assignees

• Fujifilm Corp

Inventors

• MUKAIYAMA Rena
• Nozaki Atsuyasu
• Sato Takashi
• Asano Kotaro

Classifications

• C08G18/3814

  Polyamines · CPC title

• C08G18/329

  containing aromatic groups · CPC title

• C08G18/1816

  having carbocyclic groups · CPC title

• B41C1/1008

  by removal or destruction of lithographic material on the lithographic support, e.g. by laser or spark ablation; by the use of materials rendered soluble or insoluble by heat exposure, e.g. by heat produced from a light to heat transforming system; by on-the-press exposure or on-the-press development, e.g. by the fountain of photolithographic materials · CPC title

• C08G18/8016

  Masked aliphatic or cycloaliphatic polyisocyanates · CPC title