SU1062190A1 - Photopolymerizing composition for making photopolymeric printing forms - Google Patents

Abstract

PHOTOGRAPHY it contains a compound of the formula a –snz; - ong-sng, oosn, С-о-СНг-о-о-с-в. I CHz 1de to -s11z; -cn2 cng-sns, i (L with the following ratio of components, wt.h .; cellulose acetosuccinate 100 Triethylenglycoldimethacrylate 10-20 Glycidylmetha- .. I ... krilat10-20 Hydroxyethyl heptyl alcohol 10-20 Formula 1 or 2 0.1-2 340-360. Acetone

Description

The invention relates to photopolymerizable compositions that can be used in polypropylene for the manufacture of photopolymer printing plates, as well as in radio and electronic prog.

Known photopolymerizable composition, including cellulose acetosuccinate, triatylene glycol dimethacrylate, ethoxylated heptyl alcohol, photoinitiator-1-chloroanthraquinone, and solvent. C carrying out the printing process.

Known photopolymer: (1-composition with a composition including cellulose acetosuccinate, triethylene glycol dimethacrylate, glycidyltelacry / 1at, ethoxylated heptyl alcohol, solvent and photoinitiator — st, biline iminoxyl radicals 2.

The disadvantage of this composition is to obtain high-quality printing forms with a deep relief of 0.7 mm or less, as a result of which it is not possible to obtain printing elements with a diameter of less than 20 microns with a stable trapezoidal profile — 65-75.

Closest to that proposed is composting photopolymerizing agent, including cello-lulose acetosuccinate, trinethyleneglycol dimethacryl glycidyl methacrylate, ethoxylated heptyl alcohol, photoinitiator orthooxidine peroxide derivative substituted with amino-anthraquinone moiety. lot and solvent 3.

The disadvantage of this composition is the impossibility of obtaining an optimal profile of printing elements for points with a diameter of less than 200 km.

The aim of the invention is the profile of small printing elements of a photopolymer printed form.

This goal is achieved by the fact that the photopolymerisation with the compound for the manufacture of photopolymer trans. in the form of cellulose acetosuccinate, triethylene glycol dimechacrylate, glycidyl methacrylate, hydroxy. leaded heptyl alcohol, photo initiator and acetone, as a photoinitiator contains a compound compound

Turn shape jffil

I f

e-o-q-c-fi

(I) c%

where ONG CH CHZ

 R - OYZ; -CHg-CHg -pH,;,

with the following ratio of components, ma.ch,:

Cellulose Acetosuccinate 100 Triethylengli. cold-methacrylate 10-20 Glycidyl methacrylate 10-20 Hydroxyethyl heptyl alcohol 10-20 Photo-Initiator

1 or 2

0.1-2 340-360 Acetone

The invention is illustrated by the following examples.

Example 1. 100 g (wt.h. Cellulose acetosuccinate is dissolved in 350 g (parts by weight of acetone, 20 g of Gmas. Parts is added) of triethylene glycol-methacrylate, 10 g (parts by weight of glididyl) methacrylate; 10 g (by weight) of hydroxyethyl alcohol of heptyl alcohol and 0.1 g (. of oil) of tert-butyl peroxymethyl ester of anthraquinone-2-carboxylic acid, dissolved in 10 g (parts by weight)

5 acetone. The composition is thoroughly mixed until complete dissolution of the components, filtered, de-aerated at 40 ° C for 24 hours and poured onto the glass to obtain after drying the layer with a thickness of 0.7 mm. Dry for 72 hours. The photopolymerizable layer obtained is glued to the metal substrate with glues Kap-311.

GIPK-311 glue is a photopolymerizable adhesive composition comprising SKS-8A hydroxyl-containing urethane rubber in the form of a 30% aqueous solution in acetone, nitrocellulose, triethylene glycol dimethacrylate, 1-chloroanthraquinone. The hardener is polyisocyanate. Glue GIPK-311 produced in accordance with TU-6-05251-14-78.

As a metal substrate, a tin thickness of 0.25 mm, coated with EP-527 lacquer, which is produced by industry according to Specification 14-1-2771-79, is used. The thickness of the jsyxoro LS coating lies within 5-7 µm.

In accordance with MRTU 6-10-758-68, EP-527 lacquer is a solution of a bottled solution. The phenol paraze of a polybenol formaldehyde resin I FPF-1 is a high molecular weight resin. E-ZO-T or E-ZO-K in ethyl cellosolve with an orthophosphoric acid dosage as a curing catalyst. At the same time, the composition and the layer according to the known composition are prepared in a similar way, using 1.0 g as the photoinidator (parts of the colored peroxide derivative of the substituted anthraquinonic acids. Both plates obtained are irradiated for 15 minutes through a model negative containing separately standing buds as large as 200 µm, as well as test forts to limit resolution, optimal exposure time and specific resistance of the printing elements of photopolymer printing plates to shear Exposure wire LUF 60 lamps located at a distance of 6 from the plate surface, then wash the resulting photopolymer mines with a 0.15% -HbiM aqueous solution of sodium hydroxide for 8 minutes to remove unexposed areas, then dry the resulting photopolymer printing form in the conditions are natural and examine the profile of the obtained printing elements (points with a diameter of 200 µm) using the CH-1 clock projector. On a plate made using a known composition, an angle was obtained at the base of the printing element (Elément 85®, which does not correspond to wholesale The maximum value (b5-75 ° n times deciding ability composition definiteness of the corresponding least 100 cm is the optimum exposure time, determined. Lennoe on the test form - 28 min, the resistivity of the printing element shift 16 MPa. On the plate made on the basis of the proposed composition, the printing elements have an angle at the base of 75 °. The resolution of this composition is 100; the optimal exposure time is 15 minutes; the specific resistance of the printing elements is a shift of 21 MPa. Example 2. 100 g (parts by weight) of cellulose acetosuccinate are dissolved in 340 g (parts by weight) of acetone, 15 g (parts by weight) of triethylene glycol dimethacrylate, 15 g (parts by weight) of ethoxylated heptyl alcohol are added, 15 g (wt.h.) glycidyl methacrylate and 0.6 g (mac.h.) tert-hexylperoxymethyl ester of anthraquinone-2-carboxylic acid, dissolved: in 10 g (wt.h.) acetone. Prepared, as described in example 1, a photopolymerization plate with a layer of 0.7 ual is exposed and washed as described in example 1. The angle at the base of the printing elements of the resulting photopolymer printing plate is 72 °, the resolution is 100, the optimum time -exposure of 15 min., the specific resistance of printed elements to a shift of 22 MPa. Example 3. 100 g (parts by weight of cellulose acetosuccinate are dissolved in 330 g (parts by weight) of acetone, 10 g (parts by weight) of triethylene glycol dimethacrylate, 20 g (parts by weight / glycidyl methacrylate, 20 g ( mac./eke ethetilirovanny heptyl alcohol and 2.0 g of Li wt.h.) tert-hexylperoxymethyl ester of anthraquinone-2-carboxylic acid, dissolved in 10 g (wt.h.) of acetone. Prepared as described in extension 1 , a plate with a layer of 0.7 mm is exposed and washed out as described in Example 1. The angle at the base of the printing elements of the obtained photopolymer printing plate is 66 °, allowing Leverage 100, optimal exposure time 15 min. Specific resistance of the printing elements to 29 MPa. Example 4. Prepare a photopolymerizable composition as in Example 2, using 1 g (parts by weight of tert-hexyperoxymethyl anthraquinone-2-carboxylic acid ester as photoinitiator. Angle at the base of the printing element of the resulting photopolymer printing plate is 71 °, the resolution is 100 and the optimum exposure time is 15 minutes; the specific resistance of the printing elements is a shift of 23 MPa. Example 5. A photopolymerizable composition was prepared as described in Example 2, using 1.2 g (parts by weight) of tert-butyl peroxymethyl anthrah ether Uon-2-carboxylic acid as photoinitiator. The angle at the base of the printing element of the resulting photopolymer printing plate was 67, allowing cnocbd-i noe 100 em., an optimal exposure time of 15 minutes, the resistivity of the printing elements to a shear of 27 ° C. Example 6. A photopolymerizable composition is prepared as in Example 1, using 0.1 g as the photoinitiator .I tert-butyl ether anthraquinone-2-carboxylic acid. The angle at the base of the printing elements of the obtained photopolymer printing plate is 74, the resolution is 100 cm, the optimal exposure time is 15 min, the specific resistance of the printing elements is 21 MPa. Example 7. Prepare as described in Example 2, a photopolymerizable composition using 0.6 g (parts by weight of anthraquinone-2-carboxylic ester tert-hexyl ester as photoinitiator). The angle at the base of the print elements

A photopolymer printed plate is 72 °, a resolution of 100 cm, an optimum exposure time of 15 minutes, a specific resistance of printed elements to a shift of 22 MPa.

PRI me R. 8. The photopolymerizable composition is prepared as described in Example 3, using 2.0 g (parts by weight of anthraquinone-2-carboxylic peracid terthexyl ester as photoinitiator. The angle at the base of the printing elements. The resulting photopolymer printing plate is 65%). resolution 100, optimum exposure time 15 min, specific resistance versus j, and a minimum of 30 MPa.

l

Example 9. A photopolymerization composition is prepared as described in Example 2, using 1/0 g (parts by weight) anthraquinone-2-carbO terthexyl ester as photoinitiator.

new peracid. The angle at the base of the printing elements of the obtained photo polymer printing plate is 69 °, the resolution is 100, the optimum exposure time

15 min, the resistivity of melting electrons (a shift of 28 MPa.

Example ..10. Ready t, as described in example 2, a photopolymer with a composition, using as photoinitiator1, 2 g (wt. Of .. anthraquinone-2-carbo carbohydrate ester) Composition, wt.h.

201010

15 1515

102020

151515

151515

201010

151515

10.2020

151515

151515

composition

201010

24

sixteen

18

100

0.1

0.6 2.0 1.0

1.2

0.8

412 new peracidic. The angle at the base of the printing elements of the resulting photopolymer printed forg / and is 68 ,. resolution 100, optimal exposure time 15 min, the resistivity of the printing elements to a shift of 28 MPa. The basic object of the invention is a photopolymerizing composition according to Specifications 6-17-1841-81. It includes cellulose acetosuccinate, triethylene glycol dimethacrylate, glycidylmeta,; Crylate, polyexy telene PEG-115 glycerin, 1-hlorantrahinonon. The basic | Quality characteristics of the base photo | topolymerizable composition, determined as described in Example 1, are: the angle at the base of the printing elements 83, the resolution is 100 cm, the optimal exposure time is 25 minutes, the relative resistance of the printing elements to a shift of 18 MPa. The test results of the photopolymerizable composition of examples 1-10, the known composition and the base object are shown in the table. The data obtained show that the introduction of photoinitiators of the formula (I) .. or (c) into the photopolymerization composition improves the quality of the photopolymer printing forms by obtaining an optimal profile of small printing elements.

Claims (1)

A PHOTOPOLYMERIZING COMPOSITION FOR THE PRODUCTION OF PHOTOPOLYMERIC PRINTING FORMS, including cellulose acetate succinate, triethylene glycol dimethacrylate, glycidyl methacrylate, an oxyethylated heptyl alcohol, which has a printing compound that has formulas & = - sn ₃ ; -sn ₂ -sn _g -sn ₃ , о о sn ₃ ζχ ^ 0-ο-ο-οΗ ₂ -ο - ο- | --κ. ^cn where R = -CH ₃ ; -0H ₂ ~ CH _g -CH ₃ , § in the following ratio of components, parts by weight: ⁵ Acetosuccinate SU „, .1062190 pulp 100 Trietylengli to oldimetric acry- lat 10-20 Glycidylmeth. krill 10-20 Hydroxyethyl heptane bath tin alcohol 10-20 Photo initiator formula 1 or 2 0.1-2 Acetone 340-360 . 1062190 I