Claims
- 1. A water-developable photosensitive resin composition comprising:
- (1) granular copolymer particles produced by polymerizing a monomer mixture ((i)+(ii)+(iii)+(iv)=100 mol %) comprising:
- (i) 10 to 95 mol % of an aliphatic conjugated diene monomer,
- (ii) 0.1 to 30 mol % of a monomer represented by the following general formula (I): ##STR5## in which R.sup.1 represents a hydrogen atom or a methyl group, R.sup.2 represents an alkylene group having a carbon number of 3 to 20, and l represents an integer of 1 to 20,
- (iii) 0.1 to 20 mol % of a monomer having at least two addition-polymerizable groups, and
- (iv) 0 to 70 mol % of an addition-polymerizable monomer other than (i), (ii) and (iii);
- (2) a photo-polymerizable unsaturated monomer;
- (3) an amino group-containing compound, and
- (4) a photo-polymerization initiator.
- 2. A water-developable photosensitive resin composition of claim 1, in which the aliphatic conjugated diene monomer (i) is selected from the group consisting of 1,3-butadiene and isoprene.
- 3. A water-developable photosensitive resin composition of claim 1, in which the monomer represented by the formula (I) is a (meth)acrylic acid modified with .epsilon.-caprolactone of l being 1-4.
- 4. A water-developable photosensitive resin composition of claim 1, in which the monomer having at least two addition-polymerizable groups is selected from the group consisting of divinyl benzene and ethylene glycol (meth)acrylate.
- 5. A water-developable photosensitive resin composition of claim 1, in which the copolymer (1) is in particle form having a particle size of 10-300 nm prepared by an emulsion polymerization.
- 6. A water-developable photosensitive resin composition of claim 1, in which the photo-polymerizable unsaturated monomer is selected from the group consisting of alkyl (meth)acrylate and alkylene glycol (meth)acrylate.
- 7. A water-developable photosensitive resin composition of claim 1, in which the amino group-containing compound is a tertiary amino group-containing .alpha.,.beta.-ethylenically unsaturated group.
- 8. A water-developable photosensitive resin composition of claim 1 which comprises:
- (1) granular copolymer particles of 100 parts by weight,
- (2) a photo-polymerizable unsaturated monomer of 10-500 parts by weight,
- (3) an amino group-containing compound of 2-50 parts by weight, and
- (4) a photo-polymerization initiator of 0.1-20 parts by weight.
- 9. A water-developable photosensitive resin composition of any one of claims 1 to 8, which additionally comprises a block copolymer composed of a hard segment of non-elastic polymer having a glass transition point of not lower than 20.degree. C. and a soft segment of an elastic polymer having a glass transition point of not higher than 10.degree. C. in the amount of less than 100 parts by weight relative to 100 parts by weight of the copolymer (1).
- 10. A water-developable photosensitive resin composition of claim 9, in which the thermoplastic polymer of the hard segment is a homo- or copolymer of monomers selected from the group consisting of styrene, t-butyl styrene, .alpha.-methyl styrene, p-methyl styrene, divinyl benzene, 1,1-diphenyl styrene, N,N-dimethyl-p-aminoethyl styrene, N,N-diethyl-p-aminoethyl styrene and vinyl pyridine.
- 11. A water-developable photosensitive resin composition of claim 9, in which the elastic polymer of the soft segment is a homo- or copolymer of monomers selected from the group consisting of 1,3-butadiene, isoprene, 2,3-dimethyl-1,3-butadiene, 1,3-pentadiene, 2-methyl-1,3-pentadiene, 1,3-hexadiene, 4,5-diethyl-1,3-octadiene, 3-butyl-1,3-octadiene and chloroprene.
- 12. A flexographic printing plate having a photographic layer formed of a water-developable photosensitive resin composition, the composition comprising:
- (1) granular copolymer particles produced by polymerizing a monomer mixture ((i)+(ii)+(iii)+(iv)100 mol %) comprising:
- (i) 10 to 95 mol % of an aliphatic conjugated diene monomer,
- (ii) 0.1 to 30 mol % of a monomer represented by the following general formula (I): ##STR6## in which R.sup.1 represents a hydrogen atom or a methyl group, R.sup.2 represents an alkylene group having a carbon number of 3 to 20, and l represents an integer of 1 to 20,
- (iii) 0.1 to 20 mol % of a monomer having at least two addition-polymerizable groups, and
- (iv) 0 to 70 mol % of an addition-polymerizable monomer other than (i), (ii) and (iii);
- (2) a photo-polymerizable unsaturated monomer;
- (3) an amino group-containing compound, and
- (4) a photo-polymerization initiator.
- 13. A flexographic printing plate of claim 12, in which the aliphatic conjugated diene monomer (i) is selected from the group consisting of 1,3-butadiene and isoprene.
- 14. A flexographic printing plate of claim 12, in which the monomer represented by the formula (I) is a (meth)acrylic acid modified with .epsilon.-caprolactone of l being 1-4.
- 15. A flexographic printing plate of claim 12, in which the monomer having at least two addition-polymerizable groups is selected from the group consisting of divinyl benzene and ethylene glycol (meth)acrylate.
- 16. A flexographic printing plate of claim 12, in which the copolymer (1) is particle form having a particle size of 10-300 nm prepared by an emulsion polymerization.
- 17. A flexographic printing plate of claim 12, in which the photo-polymerizable unsaturated monomer is selected from the group consisting of alkyl (meth)acrylate and alkylene glycol (meth)acrylate.
- 18. A flexographic printing plate of claim 12, in which the amino group-containing compound is a tertiary amino group-containing .alpha.,.beta.-ethylenically unsaturated group.
- 19. A flexographic printing plate of claim 12, which comprises:
- (1) granular copolymer particles of 100 parts by weight,
- (2) a photo-polymerizable unsaturated monomer of 10-500 parts by weight,
- (3) an amino group-containing compound of 2-50 parts by weight, and
- (4) a photo-polymerization initiator of 0.1-20 parts by weight.
- 20. A flexographic printing plate of any one of claims 12 to 18, in which the water-developable photosensitive resin composition additionally comprises a block copolymer composed of a hard segment of thermoplastic, non-elastic polymer having a glass transition point of not lower than 20.degree. C. and a soft segment of an elastic polymer having a glass transition point of not higher than 10.degree. C. in the amount of less than 100 parts by weight relative to 100 parts by weight of the copolymer (1).
- 21. A flexographic printing plate of claim 20, in which the thermoplastic polymer of the hard segment is a homo- or copolymer of monomers selected from the group consisting of styrene, t-butyl styrene, .alpha.-methyl styrene, p-methyl styrene, divinyl benzene, 1,1-diphenyl styrene, N,N-dimethyl-p-aminoethyl styrene, N,N-diethyl-p-aminoethyl styrene and vinyl pyridine.
- 22. A flexographic printing plate of claim 20, in which the elastic polymer of the soft segment is a homo- or copolymer from monomers selected from the group consisting of 1,3-butadiene, isoprene, 2,3-dimethyl-1,3-butadiene, 1,3-pentadiene, 2-methyl-1,3-pentadiene, 1,3-hexadiene, 4,5-diethyl-1,3-octadiene, 3-butyl-1,3-octadiene and chloroprene.
Priority Claims (1)
Number |
Date |
Country |
Kind |
6-306212 |
Dec 1994 |
JPX |
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Parent Case Info
This application is a continuation of Ser. No. 08/570,632, filed Dec. 11, 1995 now abandoned.
US Referenced Citations (5)
Foreign Referenced Citations (6)
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EPX |
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Continuations (1)
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Number |
Date |
Country |
Parent |
570632 |
Dec 1995 |
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