Claims
- 1. A photosensitive flexographic resin plate comprising a base plate and a photosensitive resin layer formed by applying thereon a resin composition which consists essentially of:
- (a) 20 to 95% by weight of a resin having rubber elasticity selected from a group consisting of butadiene polymer, isoprene polymer, chloroprene polymer, butadiene-styrene copolymer, polystyrene-polybutadiene-polystyrene block copolymer, polystyrene-polyisoprene-polystyrene block copolymer, butadiene-(meth)acrylic acid-acrylic ester copolymer, butadiene-(meth)acrylic acid-styrene copolymer and butadiene-(meth)acrylic acid-acrylonitrile copolymer,
- (b) 1 to 80% by weight of an unsaturated monomer,
- (c) 0.01 to 10% by weight of a photopolymerization initiator and
- (d) 0.1 to 50% by weight of resin particles having an average particle size of about 0.01 to 6 micron which are prepared by suspension or emulsion polymerization of an ethylenically unsaturated monomer and a monomer having at least two radical-polymerizable unsaturated groups, % being based on the amount of said resin composition;
- and said resin composition, when cured by exposure to ultraviolet beams, exhibiting a JIS A hardness of 30.degree. to 80.degree. and an impact resilience of at least 20%.
- 2. The photosensitive flexographic resin plate according to claim 1 wherein the resin particles have an average particle size of 0.05 to 0.50 micron.
- 3. The photosensitive flexographic resin plate according to claim 1 wherein the resin particles are present in an amount of 0.5 to 20% by weight based on the photosensitive resin composition.
- 4. The photosensitive flexographic resin plate according to claim 1 wherein the resin particles are made from a homopolymer or copolymer of a polymerizable ethylenically unsaturated monomer.
- 5. The photosensitive flexographic resin plate according to claim 1 wherein the resin particles are prepared by emulsion polymerization using as a dispersant an amphoteric compound.
- 6. The photosensitive flexographic resin plate according to claim 1 wherein the resin having rubber elasticity has a glass transition temperature (Tg) of not more than -10.degree. C.
- 7. The photosensitive flexographic printing plate according to claim 6 wherein the resin having rubber elasticity has a glass transition temperature of not more than -30.degree. C.
- 8. The photosensitive flexographic resin plate according to claim 1 wherein the base plate is a metal plate or a plastic plate.
Priority Claims (1)
Number |
Date |
Country |
Kind |
61-152009 |
Jun 1986 |
JPX |
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Parent Case Info
This application is a continuation of now abandoned application, Ser. No. 07/344,504 filed on Apr. 27, 1989 which is a continuation of now abandoned application Ser. No. 07/067,121 filed June 29, 1987.
US Referenced Citations (11)
Foreign Referenced Citations (3)
Number |
Date |
Country |
0041643A2 |
Dec 1981 |
EPX |
0092783A3 |
Nov 1983 |
EPX |
0188232A3 |
Jul 1986 |
EPX |
Continuations (2)
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Number |
Date |
Country |
Parent |
344504 |
Apr 1989 |
|
Parent |
67121 |
Jun 1987 |
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